Review HP Elitebook 2570p-B6Q10EA Notebook

HP calls their series of laptops designed for professionals "Elitebook". Superb build quality and upscale materials do not come cheap, however - the price of admission starts at 1000 Euro. The range encompasses systems from 11.6-inch (2170p) to 12.5-inch (2560p and 2570p), and 14-inch (8460p and 8470p ) to 15.6-inch (8560p and 8570p). HP MT06 We should also include the Elitebook 2760p in this list - a 12.1-inch tablet PC.

Most Elitebooks now feature Intel's Ivy Bridge hardware. Our review system, the 12.1-inch 2570p, is the successor to the (already reviewed) 2560p. This time around, we check out a top-of-the-line configuration featuring mobile broadband, Core i7-3520M dual core CPU, integrated Graphics 4000 graphics card, 4 GB RAM, and 256 GB SSD.

Case

As far as the chassis is concerned, HP stayed with the tried and true. The Elitebook 2570p looks like its predecessor - and sports the same substantial weight of 2 kilogram (4.41 pounds), as well as chassis thickness. HP MTO3

The hefty construction has its benefits: the chassis is very sturdy, does not deform when pressure is applied, and resists twisting forces extremely well. HP outfitted the notebook with a very rigid bottom cover, which can be removed in its entirety without unscrewing a single screw. The display resists pressure well, is torsionally very rigid, and does not deform when the notebook is lifted at a corner. We have no issues with the overall sturdiness of this notebook. HP MTO6

In addition, all materials are of very high quality. The aluminum surfaces (both brushed and painted) feel cool to the touch and resist scratching. The keys of the keyboard, for example, are made from matte, slightly rough plastic and feel pleasant under the fingertips.

The hinges are metal and hold the display securely with minimal back-and-forth movement after an adjustment of the display angle. Because of the weight of the base unit, the display lid can be opened with one hand without issues. HP TPN-Q101

HP decided to forgo the massive display lock featured on the predecessor. The hinges of the 2570p, even though quite stiff, don't manage to hold the display lid securely closed when the notebook is turned upside down and held by just the base unit. It might be advisable to use a sleeve for transport to prevent items from wedging themselves between the lid and the base.

Performance

HP TPN-Q102 The Elitebook 2570p is based on Intel's QM77 (Panther Point) chipset. Our version features the fast Intel Core i7-3520M dual-core processor. For this particular Elitebook, this is the top CPU. System RAM is four Gigabyte - part of which is shared with the integrated Graphics 4000.

Our test system is the top-of-the-line configuration. Other models come equipped with a slower Core i5 Ivy Bridge CPU and (in some cases) only two Gigabyte of RAM. We consider four Gigabyte to be the current standard. For simple office tasks and Internet browsing, the less expensive model with he Core i5 processor should be sufficient. More complex applications like databases or virtual machines will take advantage of the more powerful Core i7 processor. HP 2000-350US

Processor
The Intel Core i7-3520M is manufactured using the 22 nanometer process with 3D transistors and has a core frequency of 2.9 GHz. If cooling permits, Turbo Boost allows the Ivy Bridge CPU to overclock to 3.6 Ghz (one core) or 3.4 GHz (two cores). Since the processor features hyperthreading, the two physical cores can execute four threads simultaneously. For a detailed look at the processor, please check here. Our mobile processor benchmark list allows a comparison of the CPU performance. HP HSTNN-IB2P

To determine processor performance, we conduct a series of CPU-specific benchmarks. SuperPi only tasks one core. The calculation of 32 million digits took 612 seconds - last place in our comparison of laptops with the same CPU. Lenovos 14-inch ThinkPad T430 is a bit quicker with 608 second. Two direct competitors - the FujitsuLifebook P772 (Core i5 3320M, Graphics 4000) and the Lenovo ThinkPad X230 (Core i5 3320M, Graphics 4000) achieve the same result or are only marginally slower. HP VH08

The results of the Cinebench tests show our model to perform at the same level as other notebooks equipped with the same CPU. Single-Core rendering resulted in 1.47, Multi-Core rendering in 3.38 points. The ThinkPad T430 is slightly slower. Fujitsu's Lifebook P772 (Core i5 3320M, Graphics 4000) and Lenovo's ThinkPad X230 (Core i5 3320M, Graphics 4000) received 3.10 and 3.06 points, respectively (during the same Multi-Core test). The P772 achieved 1.32 points during the Single-Core test; we don't have any data for the X230 here. HP VH08XL

Unfortunately, CPU performance decreases significantly while the notebook is running on battery. Cinebench R10 64-Bit Single-Rendering now resulted in only 5.164 points (6.203 points while on external power). That means that the laptop is about 20% faster while it's plugged in. The Multi-Rendering test shows an even larger difference of 22%.

We never experienced any significant latency even when the wireless modules were turned on.

System Performance
HP QK641AA To evaluate overall system performance, we normally use the two PCMark benchmark tests. Unfortunately, PCMark 7 did not finish, so we don't have any results. Let's take a look at PCMark Vantage instead. The Elitebook 2570p achieved an overall score of 13123 points - an excellent result, owing mostly to the speedy storage drive (SSD). The Vaio SV-S13A1Z9E/S (GeForce GT 640M LE, 3520M CPU, and RAID 0 with two Samsung MZRPC512HAFU-000SO SSDs) scores 10% better (14496 points). Lenovo's ThinkPad T430 (NVS 5400M, 3520M, Hitachi Travelstar Z7K500 HTS725050A7E630) is quite a bit slower since it features a conventional hard drive (8385 points - our review system is 57% faster). HP HSTNN-LB2P Fujitsu's Lifebook P772 (3320M, Graphics 4000) also features a standard hard drive (7200 RPM) and isn't able to keep up (only scores about half the points). Lenovo's ThinkPad X230 (3320M, Graphics 4000) also has a 7200 RPM conventional hard drive and achieves 8503 points - better than the 6747 points the P722 could muster, but still a far cry from the performance of the 2570p with SSD.

Programs and data load speedily and the daily workload is a breeze. System boot and wake-up are significantly faster than those posted by systems equipped with a regular hard disk drive. HP HSTNN-IB2Q

Storage Devices
Our review system comes equipped with a Micron RealSSD C400 (MTFDDAK256MAM-1K12) SSD. The drive features a nominal capacity of 256 Gigabyte and comes partitioned: 20.98 Gigabyte are reserved for system recovery, while a partition called "HP_TOOLS" takes up 2 Gigabyte. The advantages of a SSD compared to a conventional hard drive with mechanical platters are the very low access times and the silent operation. For a detailed comparison of SSDs and regular HDDs, please take a look at this dedicated page. HP HSTNN-I93C

In order to compare performance of the SSD to other SSD models, we use CrystalDiskMark. Intel's SSD 520 Series as well as the OCZ Vertex 3 are a bit faster. The Micron RealSSD is able to outperform Intel's SSD 320 series by a fair margin, however. For a detailed comparison please check here.

Considering this is only a 12.5-inch system, we appreciate the integrated optical drive on the left side. The HP CDDVDW TS-U633J writes and reads all current CD and DVD formats. HP HSTNN-F10C

Graphics Card
Even though this is the top model of the 2570p, the customer still has to make due with the integrated Intel Graphics 4000. Depending on the processor, the clock speed of the Intel HD Graphics 4000 changes and the available cache amount varies. In addition, Turbo Boost is able to overclock the graphics card. Fast CPU versions, like our Core i7-3520M start with a core frequency of 650 MHz and are supposed to overclock to 1.1 to 1.25 GHz. Our review model behaves as we expected - see the section on temperature (stress test). HP 632425-001

To evaluate graphics performance, we run a series of 3DMark benchmarks. The 2570p reached 4949 points running 3DMark06, 2995 points running 3DMarkVantage, and 612 points running 3DMark11. Considering this is a speedy Core i7 dual-core CPU, the results are all a little below what we would have expected. The difference to the only system with identical hardware that we have evaluated before (One M73-2O) is between 20 and 30%, depending on the test. HP 632114-141 Some laptops with Graphics 3000 outperform the HP here - for example the Asus N53SV (15.6-inch, 2720QM, HD Graphics 3000, +7%). Same is true for systems with ULV processors: the Samsung 900X4C-A04DE (15-inch, 3317U, HD Graphics 4000, +7%). The Elitebook 2570p doesn't stand a chance when we compare it to the systems with dedicated graphics card we mentioned in our section about the processor: Lenovo's ThinkPad T430 features a NVS 5400M and Sony's Vaio SV-S13A1Z9E/S comes equipped with a GeForce GT 640M LE. Let's look at the direct competition: Fujitsu's P722 does better in all 3DMark tests; Lenovo's Thinkpad X230 offers the same performance. HP 632113-151

We couldn't detect any changes in frequency when we ran the stress test. That means that throttling due to excessive heat does not occur.

Battery Life

Our review system uses a 55 Wh battery, which protrudes in the back. A 9-cell (100 Wh) and a 6-cell (62 Wh) battery are also available.

We determine the maximum battery life with the display on its lowest setting, energy saving profile enabled, and turned off WiFi modules. The BatteryEater Readers Test simulates reading text. The 2570p lasted almost 11.25 hours before we needed to plug it in. HP 628369-421

With the display set to a brightness of 150 cd/m² and energy savings profile enabled, the user can expect about 6 hours while surfing the Internet. For this WLAN test, we run a script which simulates surfing the web and hitting pages with different content. With the energy saving profile enabled and the display turned up to maximum brightness (only one step above the setting for the WLAN test), the system was able to play DVDs for 4.5 hours. HP 630919-421

The minimum battery life is fairly short (2 hours).

Sony's 13-inch Vaio SV-S13A1Z9E/S (equipped with a 49 Wh battery, the same CPU and a GeForce GT 640M) fares a bit worse. Lenovo's 14-inch ThinkPad T430 (much larger capacity 94 Wh battery, 3520M, NVS 5400M) doesn't do much better than the Elitebook. The Lenovo Thinkpad X230 (which has a much brighter display) also features a larger battery (63 Wh), but lasts about an hour less during the WLAN test. Same is also true for the Fujitsu Lifebook P722. HP HSTNN-F08C

Verdict

HP's Elitebook 2570p has the same strengths and weaknesses as the predecessor. Our main point of criticism remains the display - even though it is now slightly brighter, it is still too dark and consequently mobility (outdoor use) suffers.

Plus points are the very comfortable keyboard and the touchpad / point stick combination. Build quality, sturdiness, port selection, and security features all support the status of the little Elitebook as a serious business laptop. We especially appreciate the inclusion of an optical drive in this small 12.5-inch subnotebook. HP HSTNN-OB2G

Equipped with a speedy SSD, the notebook is capable of convincing performance. The hardware components (Core i7 3520M CPU, Graphics 4000, and 4 GB RAM) are certainly sufficient for the typical office and Internet tasks. Even the top model of the 2570p is not suited for graphics intensive applications.

The Elitebook 2570p appeals to business travelers who have high demands as far as sturdiness and connectivity options are concerned. Many potential buyers are not going to like the dark display with its low contrast. Those who travel a lot, might consider the Thinkpad X230 with its much brighter IPS display instead. HP HSTNN-F11C

HP Envy 15-3040nr Laptop Review

The Envy series is HP's most revered lineup of notebooks, and for good reason. Every model thus far has left us good impressions here on Notebookcheck due to the Envy's combination of high-end looks, build quality, features and of course, the occasional high resolution IPS screen that HP has appropriately dubbed "Radiance".

While the Envy family now comes in a range of sizes starting from 14-inches all the way up to 17-inches, the last Envy 15 we reviewed was over two years ago when the premium lineup was still in its infancy. HP HSTNN-OB2H The new 2012 Envy 15 under review starts at $1099 USD and has been given the much-needed spec update with Sandy Bridge CPU configuration options (base 2.5GHz i5-2450M up to a 2.5GHz i7-2860QM), a Radeon 7690M GPU and a much sleeker design. The Beats Audio integration first found in the 2010 Envy 14 makes its return and will likely append itself to most if not all upcoming Envy notebooks down the pipeline.

HP HSTNN-I90C As impressive as the Envy models have become, we've always found certain issues and drawbacks that have thorned an otherwise solid series. Our reviews on previous models have noted the occasional high noise, ultra-glossy display and even the sudden exclusion of the IPS panel on particular models. Has HP patched up these leaks with the 2012 Envy 15? Or have they opened the door to even more unfortunate design choices? In this full review, we investigate the ins and outs of the early $1299 2012 Envy 15-3040nr.

HP HSTNN-W81C The 2012 Envy introduces to the series a brand new chassis design similar to the one used for the recently reviewed 2012 Envy 17 3D. We hate to be drawing comparisons to the MacBook Pro so early, but the redesigned Envy 15 practically parallels the Apple in many areas from the flat surfaces, leveled thickness from front-to-back (28.2mm) and even the gray coloring scheme used for the shiny but matte aluminum alloy base. Fortunately, HP has thrown enough curve balls on the overall design to prevent it from being a 1:1 replica of a MacBook. HP HSTNN-I91C For example, the unique orange lining around the perimeter of the keyboard and the volume control knob are both new to the Envy series and can definitely stand out if seen from afar.

When compared to the 2009 Envy 15 or even the 2010 Envy 14, the 2012 refresh sports less stubby edges and corners with a more minimalistic design. Gone is the long monitor hinge from the original Envy in favor of two smaller hinges nearer each end, but they thankfully still perform solidly in holding the monitor portion in place. The oddly textured case and surfaces of previous models have also been tossed in favor of a more uniform and smoother design. HP QK639AA

In terms of stability, the Envy 15 is first class. The palm and keyboard areas are very resistant to finger depressions and both the dense base and light monitor mean users can safely open the notebook with just one hand. Even the outer center of the lid, which is a usual weak point in most notebooks, is quite resistant to depressions. The base is difficult to flex from side to side as well, but the monitor portion is predictably less resistant to this sort of twisting. HP HSTNN-LB2F Edge-to-edge glass covering would have likely increased monitor stiffness and construction quality (the 17.3-inch Acer Aspire Ethos AS8951G and HP Spectre come to mind), but probably at the cost of increased weight.

Speaking of the display, the plastic protecting the flush screen is so glossy and vibrant that any sort of dust, fingerprints, blemishes or scratches (gasp!) would easily and clearly show up. In fact, the monitor portion in its entirety is quite the fingerprint magnet in contrast to the rest of the notebook. Get ready to clean the lid and display often if you plan on keeping the Envy 15 looking good as new. HP QK640AA

When taken as a whole, the chassis redesign is a surefire improvement over previous models both superficially and internally. It's most definitely a design that we can see HP utilizing for future Envy notebooks to come, at least throughout 2012.

Performance

HP CC06 The model under review has been pre-configured with the high-end and relatively new Core i7-2670QM rated at a base clock rate of 2.2GHz. This quad-core Sandy Bridge CPU is normally found in gaming or high-performance notebooks (e.g., MSI GT780DX or Acer Aspire 5755G) and is quite similar to the i7-2630QM that it supplants, down to the substantial 45 Watt TDP, 32nm lithology and 6MB cache size. The take home difference between the two is that the newer i7-2670QM can support Turbo Boost up to 200MHz faster than the i7-2630QM for a theoretical maximum of 3.1GHz. HP CC09 The powerful processor is guaranteed to run everyday applications and even modern high-end games flawlessly. In this case, any sort of slowdown would more likely be the fault of a bottleneck elsewhere in the system.

For RAM, the system is equipped with two Samsung 800MHz DDR3 modules for a combined 8GB. Two RAM slots total are available (and easily accessible) to the user for a maximum of 16GB. According to the DPC Latency Checker, the notebook suffers from no recurring high latency peaks even with WLAN and Bluetooth active. HP CC06XL

Processor

In the synthetic CPU-oriented benchmarks, the Envy 15 places itself alongside some of the top notebook performers. Results weren't as high compared to the higher-end i7-2760QM, of course, but the CPU scores from the HP are directly in line with other i7-2670QM notebooks we have tested. For example, CPU scores from 3DMark 06, SiSoft and Cinebench R10/R11 between the Envy 15, HP Pavilion dv7 and Acer Aspire 5755G are literally percentage points away from one another, suggesting very consistent performance of the Intel CPU between a variety of notebooks. HP HSTNN-CB2F

Raw single-core and multi-core performances of the CPU were also tested with Super Pi and wPrime (set to 8 threads), respectively. In theory, the slightly higher-clocked Turbo Boost of the i7-2670QM means either scores here should be marginally stronger or at least the same as the i7-2630QM when running those same tests. Indeed, this is exactly what we see with the Envy 15. The HP scored 11m15s and 5m28s in Super Pi 32M and wPrime 1024M during our tests, respectively, which are about the same or better than the average i7-2630QM according to our database. HP HSTNN-LB2G

System Performance

We turned to PCMark Vantage and PCMark 7 for gauging general system performance where the Envy 15 was able to score 10164 and 2612 points, respectively. For a notebook without a built-in SSD, these results are very impressive. The Acer Aspire 5755G and Pavilion dv7-6c07eg with the same Core i7 CPU, for example, scored thousands of points lower in PCMark Vantage with 7569 and 8488 points, respectively. HP QK642AA Even though both benchmarks have been known to heavily favor SSD-based systems, the Envy 15 still generally outscores less powerful systems with SSDs, such as the Asus UX31 and Toshiba Z830 Ultrabooks. An Envy 15 equipped with an SSD would potentially boost its PCMark Vantage score by thousands of points, putting it in the same ball field as the MSI GT780DX.

Mass storage

HP HSTNN-DB2H For internal storage, the Envy 15 can be pre-configured with up to a 1TB 5400RPM HDD or up to a 300GB SSD, but expect to pay a pretty penny ($580) for a solid-state drive that size. The review unit under our belt runs on a Hitachi 750GB 7200RPM HDD and delivers an average data transfer rate of 92.7MB/s on HD Tune, which is pretty much on par with the 7200RPM Seagate found in the Envy 17 3D. For a single 7200RPM HDD not in RAID formation or assisted by any SSD cache, this is practically as good as it gets without cashing out for a dedicated SSD. HP HSTNN-LB2H Other 7200RPM drives usually produce average transfer rates of around 80MB/s on HD Tune or even less when considering 5400RPM drives.

Out of the 750GB of space, 20.39GB is reserved for system recovery and 677.95GB is immediately available for the OS and end-user.

Gaming Performance

In terms of graphical prowess, the Envy 15 is powered by a moderately fast Radeon 7690M GPU (no other discrete cards are available for preconfiguring). Lying somewhere between the more common GeForce GT 555M and Radeon HD 6850M in terms of general performance, the discrete AMD GPU in the Envy shouldn't be taken too lightly. It's certainly no speed demon, but the 7690M was able to play everything we threw at it on at least medium settings. HP QK643AA This is especially important considering the 1080p display that the graphics card must render on. When the GPU is idle, GPU-Z reports a core clock speed of just 100MHz. See our dedicated page on the Radeon 7690M here for more technical information on the AMD graphics processor.

Unfortunately, it is worth noting that the 7690M in the Envy 15 is not the more powerful 7690M XT. As a result, only 1GB of GDDR5 VRAM is provided with core/memory clock speeds of just 600MHz/800MHz. HP HSTNN-E04C This is compared to the Pavilion dv7-6c07eg, which includes the fully-featured 7690M XT with 2GB of GDDR5 VRAM and core/memory speeds of 725MHz/900MHz. In other words, the GPU in the Envy 15 has the same 480 unified shaders and 128-bit memory bus width as its faster brothers, but with slower fillrates, slower memory bandwidth and reduced core and memory clock rates. Users who were expecting to get the definitive 7690M may be disappointed at this fact.

HP HSTNN-LB2I Subsequently in the synthetic GPU-benchmarks, the 7690M of the Envy 15 performs a bit below our 7690M database average in every single graphics benchmark. Results from 3DMark 05 all the way up to 3DMark 11 and OpenGL CineBench renders were at least several hundred points lower than the 7690M in the 2012 Envy 17 3D and HP dv7-6c07eg.

The synthetic results are bound to disappoint at least some gamers, but at least the GPU can handle most modern games on medium to high settings at respectable frame rates hovering above 30FPS. Fujitsu LIFEBOOK T580 Battery However, we do recommend turning down certain taxing features like FSAA and ambient occlusion if playing more demanding games at the full 1080p display resolution.

Temperature

So, how did HP manage to cool both a quad-core CPU and a Radeon GPU inside a relatively thin notebook base? By having a total of seven vents, of course. The rather copious number of exhaust outlets ensures that air circulation is at its optimum for maintaining internal temperatures. Fujitsu LIFEBOOK UH572 Battery

If left idle for hours and with no running tasks, all four cores eventually settle at 800MHz according to HWiNFO. This allows the notebook to stay close to room temperature throughout the chassis, at least when under ambient temperatures of 18 degrees C.

To test maximum potential temperatures, we stressed both the CPU and GPU with Prime95 and FurMark simultaneously for over an hour. Surface temperatures on all 18 quadrants predictably skyrocketed with the more intense changes nearest the processors. Fujitsu LIFEBOOK UH552 Battery Perhaps surprisingly, the left palm rest area can remain relatively cool, although users will definitely feel a temperature difference between their left and right hands while typing. The temperature gradient is more extreme on the underside, especially from the rear where it can feel uncomfortable to use unless if the notebooks is on a solid surface. Still, this torture test is more of a hardware analysis than a representation of real-world conditions – most users won't reach these temperatures under everyday browsing, word processing or video playback. Fujitsu LIFEBOOK A552/EW Battery

To investigate any hints of throttling, we again turn to Prime95 and FurMark. We first ran FurMark only to stress the GPU and confirmed with both GPU-Z and HWiNFO that the Radeon core tops off and maintains 600MHz instead of the typical 725MHz for a 7690M. We even checked our settings and some games to see if any changes could be made to reach the target 725MHz, but alas, 600MHz was all the GPU would offer.

Fujitsu LIFEBOOK A572/EW Battery With only Prime95 active, all four CPU cores were able to maintain clock rates between 2.4GHz and 2.5GHz, well above the base 2.2GHz. The promised 3.1GHz Turbo Boost can only be reached with a single core and for brief periods of time. Such a maximum is simply unattainable when all cores are under heavy load.

When both Prime95 and FurMark were active simultaneously, the CPU and GPU cores continued to hold up very well. During our tests, the GPU maintained its 600MHz ceiling while the CPU cores shifted by 100MHz to a stable 2.3GHz to 2.4GHz. CPU temperatures, however, reached unnervingly high ranges above 95 degrees C while the GPU core leveled at around 76 degrees C. FUJITSU LifeBook T901 Battery

3DMark 06 was initiated again immediately after stress testing was completed. Final CPU and GPU scores (5312 and 9627 points, respectively) were similar to pre-stress scores, confirming no throttling issues.

HP proudly displays the Beats Audio logo not just once or even twice, but thrice on the Envy 15 on three different locations. With such a strong focus on the Dr. Dre-approved brand, it wouldn't be so irrational for users to have high expectations from the notebook speakers. FUJITSU LifeBook T901/D Battery

All in all, the built-in 6 speakers and 2 subwoofers (or as HP calls it, the "Triple Bass Reflex Subwoofer") can produce balanced sounds during both music and movie playback. Bass and treble reproductions are acceptable enough that cheap external speakers wouldn't be necessary, at least in the short run. Overall sound quality is actually quite good given the diminutive size of the audio system. Distortions do not become noticeable until very high volumes, but even then the effects are much less discernible compared to speakers found in smaller notebooks. FUJITSU LifeBook T901 Tablet PC Battery

The analog volume knob on the right edge proves to be a much better and accurate controller compared to discrete +/- buttons because of the sensitivity gains. Pressing on the knob will also launch the pre-installed Beats Audio control panel, which will give users access to various sound settings such as noise cancellation, beam forming and the all-important equalizer.

FUJITSU Lifebook BH531 Battery The three audio jacks on the left edge allow for a microphone and two separate 3.5mm headphones or external speakers to connect to the Envy simultaneously. From the looks and sounds of the Envy 15, it's obvious that HP has put in a lot of effort in emphasizing and optimizing the notebook's audio quality and related features.

To power the thirsty quad-core CPU, discrete graphics and bright display, the Envy 15 includes an 8-cell li-ion battery capable of providing up to 72WHr. Although the battery is user-replaceable, no other sizes exist. Nonetheless, 72 watt-hours of power is substantially more than what many other 15.6-inch notebooks with discrete GPUs provide, such as the Packard Bell EasyNote TS13HR. FUJITSU Lifebook LH531 Battery

For maximum battery life, the Envy was tested with the Battery Eater Reader's Test under the Power Saver profile at the minimum brightness setting and with disabled WiFi/GPU/CoolSense. The notebook clocked in at 6 hours 46 minutes.

For minimum battery life, the Performance profile and the7690M GPU were enabled with full brightness and WiFi active. The Envy 15 clocked in at just 55 minutes under the Battery Eater Classic Test. FUJITSU Lifebook SH531 Battery

For a more reality-based test, we browsed the web at 150cd/cm3 screen brightness (about 60 percent brightness level) with only the integrated GPU. The backlight and proximity sensor were both switched off as well. Results will vary broadly between users, but we were able squeeze out 4 hours before the 5 percent battery warning popped up.

FUJITSU Lifebook LH532 Battery In general, the battery life of the HP isn't all that remarkable, but we weren't expecting it to be in the first place. The specs of the Envy 15 are essentially at the level of gaming notebooks – otherwise known as some of the most energy-demanding portables around. Compared to other notebooks with the same i7 CPU like the 15.6-inch Acer Aspire 5755G, 17.3-inch Pavilion dv7-6c07eg or even the Envy 17 3D, the Envy 15 is indeed quite similar in overall runtimes. We can only assume that the full HD IPS display here is at least partly to blame for drawing more power than what is normally required for standard and sub 1080p TN displays. FUJITSU Lifebook NH751 Battery

Verdict

The Envy 15 hits the mark in numerous areas and falters in only a few. Unfortunately, those few areas may be important enough to dissuade customers from the new 2012 refresh.

When considering the desktop replacement or multimedia notebook categories, the performance to weight ratio of the Envy 15 is one of the best. It is powerful without being too bulky, flashy without looking eccentric and stuffed with features without losing its multimedia focus. If you've ever wanted a jack of all trades notebook made to function as a primary indoor computer and for infrequent trips, then the Envy 15 should be more than fitting. FUJITSU Lifebook NH751 NH532 Battery

But as HP's premier consumer-oriented notebook, it is still far from perfect. The overly glossy screen is impossible to ignore, easy to smudge and is essentially the sole reason why the notebook can be so difficult to use outdoors. Clicking with the touchpad can be a pain if the user dislikes single-tap clicking and connected cables can easily accumulate and become a nuisance due to tight port placement. The stunted 7690M GPU could be a big concern as well, especially for hardcore gamers looking to get the most out of their systems. FUJITSU Lifebook N532 Battery

Perhaps our most significant criticism, however, would be the IPS display. As beautiful as it is, its highly inaccurate colors are downright unacceptable when the user has to put down well over one grand for the notebook. How HP managed to blunder on one of the key aspects of the Envy is really a mystery, especially when they've done almost everything else right in terms of hardware quality. FUJITSU Lifebook N532/E Battery

If it were not for the IPS display flaws, we would have easily recommended the 2012 Envy 15 as a multimedia home notebook. Of course, if you don't mind the imprecise colors or are satisfied with HP's TN panel option, then the Envy 15 would make for a slick-looking and exceptional performing notebook for all kinds of tasks and games.

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Review Fujitsu Lifebook E781 Notebook

The Lifebook E781 is available in a variety of configurations ranging between 900 to 1400 Euros ($1100 to $1800 USD). The test model on hand for this review retails for 1100 Euros ($1400 USD) and is one of the more popular configuration (E781MPCN2DE) options available for the Lifebook E781. In the following review, we will take a close look at the hardware and construction of the unit. Asus a32-u31

The base configuration of the Lifebook E781 is fitting for a business notebook: anti-glare 15.6 inch display, extensive connectivity, a modular slot and a UMTS module. The laptop uses a dual-core CPU: the 2.4GHz Core i5-2430M commonly found in many other business notebooks. Hyperthreading allows the CPU to work on up to 4 threads simultaneously.

The previously reviewed "sister model" (Fujitsu E751) passed with a great score. Can Fujitsu strike it twice with the E781? Asus a42-u31

Case

The Lifebook E781 has a plain design, which is perfect for its business-oriented target group. The notebook has a good combination of matte black and silver-grey. The matte display cover is made of magnesium and with a high-quality feel. The sturdy hinges work in concert with the display cover to hold the panel securely in place and we are pleased to note that the screen neither wobbles nor does it open and close while being carried. The hinges provide an ideal opening angle of 180 degrees. Asus U41JF-A1 Battery

The workmanship is near perfect, although the loosely seated optical drive can clatter slightly. Fortunately, this minor issue is all but overshadowed by its ability to be swapped in and out. The modular slot gives the user freedom to insert additional modules such as hard disks or a second battery.

The notebook has ports on all sides and only a single interface is covered with a flap. Asus n82j Battery

At 2.5 kg (5.5 pounds), the Lifebook E781 is certainly a mobile business notebook and the power adapter only adds an extra ~300 grams (0.66 pounds) to the total weight. The test model measures 372x245x35 mm - perfectly normal for a 15.6 inch laptop, but it could have been slimmer.

Connectivity

Asus U31SD-A1 Battery The Fujitsu Lifebook E781 has extensive connectivity options. In fact, our test model has a few interfaces that have disappeared from the notebook world altogether. Fujitsu has placed the power outlet, a 56k modem interface and two USB 2.0 ports on the back and on the right. The 2 USB ports are placed over one another which may cause some problems: for example, a thick USB stick could block the neighboring USB interface. The left side has another USB 2.0 port and a USB 3.0 port. The combination of the USB 2.0 and eSATA interfaces is a welcomed feature. ASUS U36S Battery

External monitors can be connected via the digital or analogue interface of the Fujtsu Lifebook E781. The classic VGA interface is placed further towards the back while the digital port is a DisplayPort interface, which is positioned on the left side. An adapter must be used to connect monitors with a DVI or HDMI interface and must be bought separately.

The obligatory Gigabit LAN interface is placed at the level of the left display hinge on the back of the test model.

The useful SmartCard reader and ExpressCard slot are not a common sight in laptops. Thankfully, the E781 has both. Both ExpressCard 34 and 54 are supported. The slot is ideal for useful modules such as a TV card or for additional ports. ASUS U36SD Battery

The card reader is placed on the front and can read SD/XC cards and MemoryStick/MemoryStick Pro cards. Two 3.5 mm audio jacks (for headphones and microphone, respectively) are also placed on the front. The slider, placed next to the audio jacks, allows the user to easily switch on or off the communication modules.

Asus P52F Battery Last but not least, the docking interface lies on the bottom of the laptop which allows the user to connect a docking station if available. The docking station makes life easier: the notebook can be used as a stationary PC at the office without creating a spaghetti of cables. The appropriate docking station can be found at the Fujitsu store, and we round off this section by noting that the laptop has great connectivity that business users can absolutely appreciate.

Performance

Asus F8Sa Battery Fujitsu offers 8 different CPUs for the Lifebook E781 from the Intel Core i series. These processors are all dual-core CPUs. Our test model is in the lower third of the E781 series as it is equipped with a standard Intel Core i5-2430M. The dual-core CPU runs at 2.4 GHz and represents the middle-class of mobile processors from Intel. Turbo Boost allows both cores to speed up to 2.7 GHz and a single core can be overclocked to 3.0 GHz.

ASUS U35JC battery In our test model, we have 4 GB DDR3-1333 RAM and the model supports a maximum 8 GB. The test model has a single 4 GB module installed which makes upgrading easy.

Processor
The Intel Core i5-2430M provides no surprises - positive or negative. The performance of the Fujitsu Lifebook E781 is exactly at the level expected and is close to other laptops with similar specifications. The results may not be stunning, but this was clear from the specifications.

Asus U3S Battery The Turbo Boost function works flawlessly and delivers full performance. Even after multiple hours of stress testing, the cores did not throttle down. Another worthy note is that the full performance is possible even while running on battery.

System Performance
The system performance of the Fujitsu Lifebook E781 notebook is average as expected of the middle-class internal hardware. Windows gives the laptop a low performance index of 4.7 points due to the graphics card, but the laptop can still hold its own compared the competition. In fact, it can even compete with laptops with stronger processors as the system performance is not determined by the CPU alone. Asus G70sg Battery

Gaming Performance
We would not describe the Intel HD Graphics HD 3000 as a gaming graphics card - at least not for the latest, demanding 3D games. Still, neither the Lifebook E781 nor the IGP is designed to make gamers happy. The IGP provides sufficient performance for older and less demanding 3D games, but even modern games like Anno 2070 can run fluidly at low settings. Simulation games such as Fifa 2012 can be playable of medium settings. Asus K43SJ Battery

Battery Life

The Lifebook E781 is quite conservative when it comes to power consumption. The 15.6 inch model consumes no more than 15.6 watts at maximum brightness. Overall, the power consumption hovers around 13 watts. At full load, the power consumption can rise up to 68.8 W, but this is only achievable while the battery is charging simultaneously. While the notebook is off, it consumes only 0.2 watts and in Standby mode use up to 0.7 watts. Asus G51V Battery

The moderate power consumption means that the Fujitsu Lifebook E781 has a good battery life, which is especially important for a business notebook. Although the laptop cannot last an entire workday even under ideal conditions, it has a good run time of more than 7 hours. In everyday use, the laptop lasts between 4 to 5 hours. The laptop is great for DVD playback as it can last up to 4 hours while playing a movie at maximum brightness. Even long movies, such as "Dances with the Wolves", will not be a problem on this model. At full load, the laptop goes into Standby mode after one and a half hours. ASUS ZenBook UX31 battery

Verdict

The Fujitsu Lifebook E781 is a full-blooded business notebook and it has our recommendation. The biggest strength of the well-configured model is the display and its size and resolution are perfect for business users. In addition, the matte display is bright and offers a lovely contrast and great viewing angles. The good keyboard, reliable touchpad and fast mouse buttons all make the laptop very ergonomic. Let us not forget: the multitude of interfaces offered on the model are absolutely necessary for business users. Laptop maintenance is very easy and the modular slot will help users customize their notebook. ASUS UL50VT battery

The Lifebook E781 has great mobility thanks to its low weight, UMTS module, and long battery life.

The review model lands at an expected level in terms of performance: all office tasks are accomplished with ease. However, gamers and video editors will find this laptop too slow for their needs as the E781 lacks a discrete graphics card. Of course, not installing a discrete graphics card, drops the price of the laptop considerably and increases the battery life. Asus W3J battery

We have to mention the flaws of the Fujitsu Lifebook E781 as well: the high temperatures on the bottom of the laptop and the audible hard disk noise emissions. The HDD emits an annoying high-frequency buzzing noise at full load and the speakers are poor. ASUS G73SW-TZ083V Battery

Overall, we found the Fujitsu Lifebook E781 notebook to be a satisfying business laptop. The model has weaknesses in areas which, most importantly, do not affect the business use. We believe the laptop offers a good price-to-performance ratio for a price starting at 900 Euros (about $1100 USD). This means that business users can get a reliable work laptop with extensive connectivity options for relatively little money.

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Review Asus U44SG Notebook

With the U44SG, Taiwanese manufacturer ASUS offers a slim, lightweight, premium 14 inch laptop that promises high performance and low emissions. The U44SG features a 14 inch display squeezed into a stylish 13.3 inch case. Asus L0790C6 Currently, ASUS offers 4 different versions of the U44SG in Germany, all of which use a large 256 GB Solid State Drive (SSD) for storage. The hardware delivers high performance but comes with a comparably high price as the laptop starts at 1200 Euros ($1500 USD). At press time, our test model featured the highest-end options in nearly every category in the series. For the above 1200 Euros ($1500 USD), the buyer receives an Intel Core i7-2640M CPU, 4 GB of RAM, a 256 GB SSD, the NVIDIA GeForce 610M discrete graphics card, and a matte 14 inch display. Asus C22-UX31 Other configurations of the U44SG have more RAM and/or a weaker CPU.

Case

We have classified the ASUS U44SG as a subnotebook, as we did with the previous generation's U36JC and U36SD, due to its compact 13.3 inch build, low weight, and product orientation. Our test model is nearly identical to its 13 inch predecessors with the main exception being the larger 14 inch screen. In some ways, the ASUS U44SG promises more than it can deliver, as was the case with the U36JC and U36SD. Asus A31-1015 Advertisements claim a weight of 1.5 kg (3.3 pounds) and the claimed measurements which are only possible with a small 4-cell battery that was not available for either the previous U36 models or our U44SG test model. We could not confirm the promised 19 mm (0.75 inches) thickness as this seems only possible when the rubber feet are removed. Otherwise, the laptop measures 24 mm (0.94 inches) thick. With the 8-cell battery, the laptop thickness increases to 30 mm (1.18 inches) in the back. Asus AL31-1015 Despite this, the U44SG remains a slim notebook which can compete with laptops like the 13 inch MacBook Air or the Samsung 900X3A. The laptop has found a nice niche as a 14 inch notebook and undersells many competitors like the ThinkPad T420 or HP Elitebook 8460p and is particularly appealing when considering its weight.

ASUS constructed the case of our test model using a high-quality aluminum-magnesium alloy that proved surprisingly strong. There are no flaws in the workmanship and ASUS has done a great job down to the smallest detail. Asus A32-1015 Critical areas such as the wrist-rest region and the region above the battery are sturdy and do not yield to specific pressure. Even the display border, which usually bends easily, remains impervious to typical pressures. The hinges hold the display securely and fit into the overall scheme well.

The display has a restricted opening angle due to the design of the hinges and this may negatively affect users depending on specific use. One obvious example of this drawback revolves around a potential inability to maintain vertical stability of the display when using the notebook on one's lap. Asus PL32-1015 Another drawback related to the display involves the space between the display and the notebook's base unit. The spacing is too large even when the notebook is closed, allowing dust and potentially larger, harmful objects to enter.

The underside of the notebook is clearly partitioned by a large flap and the battery. The battery sits well and can be secured with a separate mechanism. In the event that the battery is removed during stationary use, four rubber feet on the underside secure the notebook and prevent sliding or rocking. We found no flaws in workmanship on the notebook's underside. Asus A32-K53

Performance

The test model featured a 2nd generation Sandy Bridge processor paired with the well-known Intel HM65 Express chipset. Intel's Core i7-2640M, the fastest dual-core Sandy Bridge CPU in the mobile market, serves as the processor. The graphics system utilizes NVIDIA Optimus which allows the user to switch between the integrated Intel HD Graphics 3000 and the dedicated entry-class NVIDIA GeForce 610M. Asus A42-K54 For storage, the U44 series uses a 256 GB SSD to provide fast seek times, high speeds, and low emissions. The RAM of our test model is a single 4 GB module and can be upgraded to a maximum of 8 GB in two slots.
Processor

The Intel Core i7-2640M is a powerful dual-core processor that can simultaneously execute two threads per core thanks to Intel's Hyper-Threading technology, allowing the CPU to handle up to 4 threads simultaneously. The combined Hyper-Threading and Turbo Boost technology, Intel's dynamic CPU speed boost that accelerates the processor from 2.8 GHz to a maximum of 3.5 GHz based on CPU load, ensures that the user always receives an optimal level of performance for the task or tasks at hand. Asus a32-u31

As expected, the benchmark results are good. In the Cinebench R10 Single CPU (32-bit) benchmark, the i7-2640M scored 4,443 points, outperforming even some quad-core processors. The Intel Core i7-2760QM is the first quad-core CPU to reach this score and demonstrates the significant role that the i7-2640M's maximum clock speed of 3.5 GHz under Turbo Boost plays in system performance. Asus a42-u31 This is also shown in the benchmark list where the test processor places 7th in the Cinebench R10 32-bit Single CPU benchmark amongst current notebook CPUs. Clearly, these results disprove the commonly held belief that all recent quad-core processors outperform all dual-core processors.

The roles are somewhat reversed in the Cinebench R10 Multiple CPU (32-bit) benchmark where our i7 CPU falls a few ranks with a score of 10,000 points. This places our test model behind the older Core 2 Quad Q9100 which scored slightly over 10,000 points and the Core i7-2720QM which scored 14,000 points. Asus A42-G73 Nonetheless, the i7-2640M still performs respectably and finishes 18th in the above benchmark list amongst current notebook CPUs in the multiple CPU Cinebench R10 test.

In practical single-threaded programs and applications which support dual-core processors, our CPU delivers excellent performance. The relative performance of our i7-2640M only declines significantly in programs which offer support for more than two cores. It should be noted that such programs are still far from the norm. Asus 07G016DH1875 As a result, it should be no surprise that the ASUS U44SG placed ahead of all previously tested mobile processors in the iTunes conversion test, a single-threaded clock-dependent process.

The test methodology used in the video conversion test in CyberLink Media Espresso was changed from that used in the Video Conversion section to allow the use of up to four threads during pure CPU conversion and the subsequent result was quite good. This result is even competitive with the performance of stronger GPU alternatives which usually perform better. Asus 70-NY81B1000Z

Throttling was not found in our test model. The clock speeds in multi-core tests, even with simultaneous load on the NVIDIA GPU, remained constant at 2.8 GHz. The removal of the battery did not have any effect on performance. On battery, we ran Cinebench R10 32-bit and achieved 4,492 points in the Single CPU test, 9,719 points in the Multiple CPU test, and 6,008 points in the OpenGL test, results similar to those obtained while on AC power. Asus 90-NY81B1000Y The system completed the wPrime 1024M test in 494 seconds on AC power and 491 seconds on battery power confirming no significant performance differences on battery power.
System Performance
The ASUS U44SG accomplishes all tasks quickly. The system performance is subjectively very high and should have sufficient power for some degree of future-proofing. An additional RAM module can be added to make the performance even better. Only demanding 3D tasks such as computer-assisted design (CAD) and games will yield entry-level performance (see "Gaming Performance" for more information). ASUS 07G016DH1875 The PC Mark Vantage benchmark shows a very good score of 12,471 points and PC Mark 11 scores 3,419 points.

We checked the latency with DPC Latency Checker to see if problems might arise while using an external device that requires precise synchronization with the notebook for data transfer. Our test model did not perform well in this test. While WiFi was on, we noticed numerous critical values. ASUS 70-NY81B1000Z The performance barely improved after the module was turned off. The source of this latency is indeterminate and users may have to find different drivers to improve performance.

Gaming Performance
The gaming performance of the NVIDIA GPU on a single 4 GB RAM module was much better than that of the Intel HD 3000 IGP. However, this gap in performance would be decreased if a second RAM module were added and the laptop set to dual-channel mode.

StarCraft 2 was tested using both GPU options and there was a significant difference in performance under the current configuration. Intel's IGP delivered 77 fps whereas the NVIDIA GPU managed 132 fps at low settings. At medium settings, the game became unplayable as the Intel HD Graphics 3000 delivered a mere 8 fps and the NVIDIA GPU did little better at 23 fps. In summary, StarCraft 2 is only playable at low settings but could be run with either the Intel HD Graphics 3000 or the NVIDIA GeForce 610M. The NVIDIA GPU is clearly the better choice and one or two settings could be raised at the native resolution of 1366x768.

World of Warcraft was playable at 77 fps at medium settings and even maintained 46 fps when the resolution was raised to 1366x768 pixels using the NVIDIA GeForce 610M. These settings made the game enjoyable and the GPU had enough overhead to increase one or two settings even more.

Anno 2070 could only be run at low settings. At medium settings, the game stuttered occasionally and playing for a long time would not be fun. Even at low settings, the game slowed down when there were a lot of units on the screen and when the game had been running for some time. Anno 2070 is the limit for the ASUS U44SG.

Deus Ex Human Revolution ran surprisingly well at low settings and looked good. At higher details, small stutters began to appear and the game slowed down. For long periods of playing, we recommend the use of the low settings.
Temperature Emissions
Temperature emissions are one of the few areas that have gotten worse in comparison to the older 13 inch models. Under load, the rear right side and surrounding region maintained temperatures between 44.0 °C and 51.6 °C (111.2 °F to 124.9 °F). That is almost 10 °C (18 °F) more than the ASUS U36JC and 4 °C (7 °F) more than the U36SD. The heat was tangible on the underside and also in the keyboard region due to the materials used. These materials seemed to dissipate heat well and helped with cooling.

We measured 45.1 °C (113.2 °F) in the center of the keyboard. While this temperature is not critical, it was certainly tangible. The cooling vents managed better temperatures between 38.0 °C and 44.0 °C (100.4 °F and 111.2 °F) but as they are directed towards the hand, this could become uncomfortably hot after a while. Thankfully, we were unable to detect any heat or power adapter throttling and the performance stayed constant in all our tests. In normal use without constant strain of the main components, CPU and GPU, the case remained cool at 30.0 °C (86 °F).

Graphics Card

The ASUS U44SG uses both the Intel HD Graphics 3000 integrated in the Core i7 CPU and the dedicated NVIDIA GeForce 610M GPU with 1 GB DDR3 VRAM. This pairing benefits from NVIDIA's Optimus technology which allows the system to deactivate one graphics card in favor of the other depending on the application. Optimus activates the GeForce 610M when 3D performance is required in games and other 3D applications. In virtually all other scenarios, Optimus activates the Intel HD Graphics 3000 Integrated Graphics Processor (IGP) to conserve power and extend battery-powered runtimes. The GeForce GPU has a 64-bit memory interface and a 900 MHz memory clock. The GPU has 48 shaders and a variable core clock that peaks at 900 MHz. These specifications confirm that the NVIDIA GeForce 610M is the direct successor to the GeForce GT520 and can be classified as an entry-level GPU.

The benchmark results show what was already expected from the technical specifications of both GPUs. NVIDIA's solution is more power than the Intel IGP but only performs slightly better. NVIDIA's GeForce 610M scores 15.5 points whereas the Intel IGP scores 9.01 points in the Cinebench R11.5 benchmark. In 3D Mark Vantage, the NVIDIA GPU scores 2,428 points and the Intel IGP manages 1,736 points. In the Heaven 2.1 benchmark, we recorded 8.0 frames per second (fps) for the NVIDIA GPU whereas the Intel IGP scores 7.4 fps. This gap in performance can be reduced by adding a second RAM module (up to the maximum system memory of 8 GB) and activating dual-channel mode which will greatly benefit the Intel HD Graphics 3000.

We could not quantify this performance gain as the second RAM slot of our test model had a bent pin. In the test of the Lenovo ThinkPad X220, adding a second RAM module led to a significant increase in performance in graphics-intensive tasks. These results are discussed in depth in the "Performance" section of the Lenovo X220 (IPS) Review.

Video Conversion

We used two different Full HD video files - one WMV and one QuickTime - to test the video conversion capabilities of our test model. The files were converted into an iPhone-compatible 640x320 resolution H.264 format and the results were then compared. We used CyberLink's Media Espresso 6.5 for this test due to its support for all 4 of our test methods - pure CPU conversion, Intel Quick Sync, NVIDIA CUDA, and ATI Stream. NVIDIA Optimus allowed our test model to use three of the four methods with the ATI Stream method being unsupported due to the absence of an AMD GPU. As expected, pure CPU conversion was barely capable of competing with the other methods and took up to three times as long as the other methods. GPU conversions (Quick Sync and CUDA) were performed faster and placed less load on the system. Intel's Quick Sync led to a 28% to 58% CPU load whereas CUDA required 7% to 42% of total processor power. Pure CPU conversion created a CPU load greater than 90%. Quick Sync was the fastest for converting QuickTime movies whereas NVIDIA CUDA was slightly faster for converting WMV video.

Battery Life

Power Consumption
Despite its slim build, the laptop has a removable battery. This is advantageous for the user as this allows one to choose between battery life and mobility by purchasing the corresponding battery. If the battery fails, the user could simply swap it out instead of needing to send it for repair. According to the cover sheet, the ASUS U44SG is available with a 44 Wh 4-cell battery (90-N181B1000Y) which costs 100 Euros ($125 USD) and a 83 Wh 8-cell battery (90-N181B4000Y) which costs 160 Euros ($200 USD). Unfortunately the 4-cell battery, as in the case of the U36, is not currently available here. This restricts possible use scenarios slightly as the user cannot choose between the portability of the 44-Wh battery and the longer runtimes of the 83-Wh battery.

We measured power consumption from the adapter ranging from 8.5 Watts to 71.4 Watts. This demonstrates that ASUS has good control over power consumption despite power hungry components, thanks in part to NVIDIA Optimus. As the Intel HD Graphics 3000 chip takes care of most tasks, the power consumption only rose moderately from 10.8 Watts to 12.1 Watts with adjusted brightness, changed profiles, and wireless modules switched on. When the NVIDIA GPU was set as the standard graphics chip in NVIDIA's control panel, the power consumption rose to 11.5 Watts idle at minimal settings, 14.4 Watts idle at medium settings, and 16.3 Watts idle at maximum settings. With the NVIDIA GPU under medium to full load and the CPU at maximum load, the power consumption jumped to 66.7 Watts. As mentioned before, the laptop can consume a maximum of 71.4 Watts. The power adapter provides sufficient power with its 75 Watt rating.

Battery Life

The possible battery runtimes were measured with our standard testing methods and the Power4Gear profile, provided by ASUS in addition to the standard Windows power plans, was also taken into consideration. Compared to the standard profiles, the Power4Gear profile only increased runtime by approximately 10 minutes. The main differences in this profile are reduced Desktop quality, colors optimized for use, and shorter periods before the system went into standby mode. We recommend that the user play around with the settings of the profiles a bit as some profiles had maximum processor performance set as standard. This led to the CPU running at the highest clock speed even while idle and increasing power consumption and noise emission for no real purpose.

In the Battery Eater Readers Test, we obtained an amazingly long run time of 654 minutes (almost 11 hours) using the "Power Saver" mode with Intel HD Graphics 3000 as standard, minimum display brightness, and all wireless radios switched off. This result tops the runtimes of both the ASUS U36JC and the ASUS U36SD. While surfing with WiFi turned on and an adjusted display brightness of around 150 cd/m² (level 7), we recorded a runtime of 512 minutes. Increasing the brightness to maximum reduced the runtime to 447 minutes.

As the ASUS U44SG lacks an integrated optical drive, the DVD test was performed with a video file stored locally on the SSD. With the laptop in "Power Saver" mode, wireless modules off, Intel HD 3000 as the GPU, 4% CPU load, and maximum brightness, we achieved a runtime of 382 minutes. Playback of Full HD material (H.264) consumed a little more power and reduced runtime to 344 minutes.

In the Battery Eater Classic test, we used the "High Performance" power profile with everything turned on, and maximum display brightness. A full load scenario was simulated and this test should reflect a real-world minimum runtime. While less demanding than the combined Prime95/FurMark stress test which consumed 71 Watts, the Battery Eater Classic test consumed approximately 44 Watts and our U44SG lasted 111 minutes.

Verdict

The ASUS U44SG is a solid, stylish, fast, well-equipped subnotebook. In comparison to its 13 inch brethren, its performance is higher and the laptop has a brighter, larger, matte 14 inch display. The Solid State Drive delivers good size at 256 GB and excellent performance. Despite more powerful hardware, the battery life has improved significantly indicating well-designed energy management. At low loads, noise and temperature emissions are good

When under constant load, however, the fan can become quite loud and heat emissions can rise to fairly high levels. The left touchpad key did not respond well and the second RAM slot could not be used due to a bent pin. These flaws could be considered unique to our test model, but we believe that ASUS still has room for improvement in the display's contrast ratio and viewing angles, the lack of important ports such as 3G, and the seeming unavailability of the 4-cell battery.

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Review Sony Vaio SV-Z1311Z9EX Notebook

Our SV-Z1311Z9EX test model comes with a Quad-Core-CPU of the Ivy Bridge generation, 8 GB Ram, and a fast RAID-0 mass storage solution. Sony PCGA-BP2T battery With the respective configuration, the provided Power Media Dock can improve the graphics performance with its AMD Radeon HD 7670M. Can the configuration deliver what it promises?
Case

For the elegant and timeless black casing Sony uses carbon fiber and aluminum. Since the materials are so light, the laptop weighs less than 1.2 kg. Fortunately, the matte surfaces are less sensitive to dust than high-gloss surfaces and feel fantastic. Sony PCGA-BP3T battery Fingerprints are only easily visible on the shiny touchpad buttons, which have a little bit of a sticky haptic.

While there is nothing wrong with the processing, the stability could be better. The casing creaks no matter if it is being held on one corner of the main unit or the screen. The area above the fan unit gives in considerably under pressure and the torsional stiffness of the screen case ought to be better as well. The weight reduction definitely comes at the expense of stability. Sony PCGA-BP2V battery

The hinges at the underside of the main unit do a good job. When opened the display lid pushes itself underneath the main unit and raises it at an opening angle of more than 90 degrees, which slightly tilts the keyboard.

Connectivity

Sony PCGA-BP4V battery In comparison to the predecessor, there have only been slight changes to the interface equipment (Review Sony Vaio VPC Z23N9E-B). Unlike other slim subnotebooks, HDMI and VGA are available on the Notebook and useable without any adapters. The RJ-45-Port (LAN) is located behind a flap on the left side edge. The front edge not only accommodates a SD-card slot but also a Memory Stick PRO-HG compatible slot with Sony´s MagicGate function.

Sony PCGA-BP2R battery Unlike the predecessor, the notebook has two USB-3.0 interfaces now. The rear interface is simultaneously the plug for the provided Power Media Dock. The Media Dock offers a Blu-Ray burner and an AMD Radeon HD 7670M as external video card. Furthermore, the manufacturer expands the interface by two more USB-ports (1x USB-2.0, 1x USB-3.0), RJ-45 (LAN), HDMI and VGA. The VGA-signal is good via the docking station as well as when connected directly.

Sony PCGA-BPZ51 battery The array of the interfaces on the notebook works for left- as well as right-handers because Sony has consequently placed its ports towards the rear on both sides.

Communication
The communication equipment is excellent. Ethernet-connections can be done via Realtek RTL8168/8111 Gigabit-LAN (10/100/1000MBit) in gigabit speed. Due to Intel Centrino Advanced-N 6235 (abgn), internet surfing with standard-n via Wi-Fi Hotspot is possible. Sony PCGA-BPZ51A battery A broadband modem, which supports LTE, is also on board. The accompanying SIM-card slot is on the underside. Unlike the predecessor, the laptop has Bluetooth 4.0 + HS now.

Accessories
The scope of delivery is extensive. Besides necessary accessories such as the power supply unit and the battery, it comes with a few information brochures, a cleaning cloth, and the Power Media dock with tripod and a bigger power supply unit. Sony PCGA-BPZ52 battery Furthermore Sony offers various accessories at extra charge. For example, a docking-station for the independent docking-port at the bottom costs between 400 to 500 Euros. A bigger battery costs 130 Euros.

Maintenance
On the underside, the battery can be changed after unscrewing 8 screws. Maintenance openings are not available.

Warranty
Sony PCGA-BP51 battery Ex works the warranty contains a 24 months bring-in service. Warranty extensions are possible against a surcharge. For a 3 year standard-warranty you have to shell out 149.90 Euros and for a 4 year full coverage even 349.90 Euros
Performance

The SV-Z1311Z9EX is based on the HM77 chipset of the Ivy Bridge platform and was equipped with a Core i7-3612QM four core processor from Intel with 2.1 GHz base clock. Eight Gigabyte main memory is provided for the processor. Sony PCGA-BP51A battery The notebook itself only uses the integrated Graphics 4000 chip for the video display, which causes parts of the memory to be put aside for the graphics memory. To enhance the graphics performance, our test device additionally has Sony's Power Media Dock (PMD) with external AMD Radeon HD 7670M and Blu-Ray drive. For mass storage Sony uses a RAID 0 system with two Samsung MZRPC256HADR-000SO SSDs. Sony PCGA-BP51A/L battery

If the SV-Z is configured freely in Sony's online-shop, an up to date Intel Core i5-3210M two core processor is available, as well. Data is always saved on a SSD. The options range from 128GB, over 256GB, up to 512GB. Concerning the main memory, 4GB or 8GB can be chosen. Finally, the Power Media Dock is also optional for this model. The PMD of our test device would cost over 450 Euros for the freely configured model. Sony PCGA-BP52 battery
Processor
Due to hyper threading, which provides one virtual core for every physical one, the Core i7 3612QM can work eight threads simultaneously. The Turbo-Technology allows a maximal overclocking of 2.8 GHz for four cores, 3.0 GHz for two cores, and 3.1 GHz for one core. We refer to our data bank for a more detailed description of the processor. Our benchmark list of mobile processors allows a performance based classification. Sony PCGA-BP52A battery

In the following, we test the performance of the Core i7 3612QM in our Sony test device with a few CPU-oriented benchmarks. In the tests with the Cinebench R10 64-Bit the CPU scores 2843 points in single rendering and 10031 points in multi rendering. In the Cinebench R11 it only reaches 1.87 points. These values are distinctly below average for the Core i7 3612QM CPU. Sony PCGA-BP52A/L battery A glance at the clock rates confirms that the CPU only clocks with a maximum of 1.6 GHz, which is noticeably lower than usual. Concerning the pure CPU performance our test device even falls behind the Z23N9E-B equipped with the Intel Core i7 2640M Sandy-Bridge processor.

If this problem only comes up on our test device or is series specific, cannot be found out with just one test device, though.
System Performance
For evaluating the overall performance and the interaction between all components we will use the usual two PCMark tests. Our test device scores 8545 points in the PC Mark Vantage, while the PC Mark 7 does not complete its run. Sony PCGA-BP52AUC battery With the Power Media Dock plugged in it is the other way around. The PC Vantage crashes and our SV-Z1311Z9EX gets 3161 points in the PCMark 7. In this case the fast mass memory solution comes in handy. Owing to the reduced processor performance due to the low tact rate (see chapter processor), our test device can obviously not use the full potential of its hardware equipment.
Storage Devices
Sony VGP-BPL4 battery Our test sample uses as mass memory a RAID-0 system of two Flash SSDs. This is called "striping", which means acceleration without redundancy by splitting the data on two memories. If one memory crashes, the saved data cannot be reconstructed.

The advantage of this solution is, as proven by the hard drive tools, a performance growth, which goes beyond the level of a single Samsung MZRPC256HADR-000SO. For example, our test sample reaches high 865 MB/s in the sequential reading test from AS SSD. Sony VGP-BPL4A battery The RAID solution gets 20.12 MB/s at reading and 62.94 MB/s at writing in the CrystalDiskMark 4K test. In comparison: the Vertex 4 scores 26.7 and 83 MB/s, the Samsung 830 14.5 and 53.1 MB/s and the Intel 520 29.7 and 91.2 MB. Subjectively, the loading time of programs is short as well. We refer to our HDD-SSD-Comparison for further performance comparisons.

Sony VGP-BPS4 battery In total the gross capacity of the RAID-0-system (and also the individual hard drive) is 256GB. 16.22 GB are reserved for the recovery partition. 213.90 GB are available for the operating system and user data.

The SV-Z1311Z9EX does not have an internal optical drive but the Power Media Dock does. The drive is the Optiarc BD RW BD-5850H SCSI CDROM Device, which can read and write Blu-Rays and DVDs. Sony VGP-BPS4A battery
Video Card
The graphic chip Graphics 4000 is integrated in the 3612QM processor. The chip is responsible for the graphics output when the Power Media Dock (PMD) is not used. When the PMD is connected, the graphics performance can be enhanced through the external AMD Radeon 7670M. You can find out more details about the video card on the respective sites of the Graphics 4000 and the Radeon 7670M. Sony VGP-BPL2A/S battery

Let´s take a look at the graphics performance of the system without PMD first: Due to the reduced CPU clock rates, the graphics performance of the integrated graphics processor comes in below average as well. However, it needs to be mentioned that one test sample is not enough to test if this problem is specific for the test sample or series immanent. Sony VGP-BPL2C/S battery

According to its configuration the graphics performance rises with plugged in PMD. The results of the 3DMark tests with HD 7670M fortunately rank at the expected level in the middle of all tested systems with AMD Radeon HD 7670M video card. The performance also ranges at the middle class level and is comparable to the Geforce GT 630M and GT 550M video cards from Nvidia. Sony VGP-BPS2A/S battery
Gaming Performance
Even though the Graphics 4000 would reach the common level concerning graphics performance, it is way more attractive to play with an independent middle-class video card. We have tested the gaming performance with three games. With plugged in Power Media Dock (PMD) the external AMD Radeon HD 7670M positions itself in comparison to other test samples with the same video card in the lower section on all three games. Sony VGP-BPS2C/S battery

Anno 2070 stays playable with PMD up to medium graphics settings. Comparable samples with the same graphics equipment are between 1% (Dell Vostro 3560, 15.6") and 14% (HP Pavilion g7-2007sg, 17.3") faster.
The integrated video card is able to display the little demanding Fifa 12 on medium settings. Our test sample with PMD still achieves playable 37.7 fps even on maximum settings. Sony VGP-BPS2C/S/E battery Here our test device performs especially badly in comparison to other samples with the same CPU and video card. Dell's 15.6-inch Vostro 3560 is nearly one and a half times faster with the same settings.
Temperature

Due to the slim design, the surfaces of the SV-Z1311Z9EX get warm very easily even under load. In this scenario the body temperature is partially exceeded as well. Sony VGP-BPS2 battery Under load (stress test) the temperature rises on the underside as well as on the top. At the bottom the temperature even crosses the 50 degree Celsius mark. Fortunately the palm rest and touchpad stay cool.

We observe the core temperature for two hours with the help of the stress test (without PMD). Fortunately the cores only reach a maximum of close above 70 degree Celsius. Sony VGP-BPS2A battery In return the system starts to clock with 1.2 GHz shortly after the beginning of the stress test. The GPU clocks with 650 MHz (core) and 800 MHz (memory) during the stress test. The 3DMark06 run, immediately following the stress test, even delivers a slightly better result than the below-average cold start run with 3482 points.

Temperature
Stress test

Sony VGP-BPS2B battery Due to the slim design, the surfaces of the SV-Z1311Z9EX get warm very easily even under load. In this scenario the body temperature is partially exceeded as well. Under load (stress test) the temperature rises on the underside as well as on the top. At the bottom the temperature even crosses the 50 degree Celsius mark. Fortunately the palm rest and touchpad stay cool. Sony VGP-BPS2C battery

We observe the core temperature for two hours with the help of the stress test (without PMD). Fortunately the cores only reach a maximum of close above 70 degree Celsius. In return the system starts to clock with 1.2 GHz shortly after the beginning of the stress test. The GPU clocks with 650 MHz (core) and 800 MHz (memory) during the stress test. The 3DMark06 run, immediately following the stress test, even delivers a slightly better result than the below-average cold start run with 3482 points. Sony VGP-BPL2 battery
Battery Runtime

Our SV-Z1311Z9EX is equipped with a 45Wh lithium-ion battery, which allows up to 7 hours battery runtime according to manufacturer. A bigger battery that can increase the battery runtime up to 14 hours, according to manufacturer, can be purchased in the online-shop. Sony VGP-BPL2C battery

Our ascertained maximum battery run time, tested with the Battery Eater Readers Test with minimum brightness, energy-saving profile and turned off Wi-Fi modules, is nearly 6 hours. This is noticeably underneath the manufacturer's information we read off the configurable model. However, this information could apply for the equipment with Core i5 CPU. Sony VGP-BPS3 battery

The Classic Test of the Battery Eater Tools records a minimum runtime of 2.75 hours with maximum brightness, high-performance profile and turned on Wi-Fi modules. The practical oriented WLAN test with the energy-saving profile and a brightness of 150 cd/m² simulates 3.25 hours of web surfing with our standard script.
Verdict Sony VGP-BPS3A battery

Light, high-quality materials, extensive communication equipment, broad band modem included, Full-HD resolution, and sheer unbelievable specifications: A Quad-Core processor, 8 GB main memory and even two SSDs in the RAID-0 system in a small 13 inch casing sounds quite amazing. Owing to the mass memory solution, the device achieves excellent values in the hard drive tests and good values in usage performance. Sony VGP-BPL5 battery Sadly, we also had to experience that the Quad-Core CPU of the Ivy-Bridge generation in our device stays permanently underclocked even in the high-performance profile.

Another point of criticism is that the screen is less bright than the predecessor's one. Nevertheless, the high-resolution Full-HD display excels with its wide color space and good contrast.

Sony VGP-BPL5A battery The Power Media Dock is also part of the scope of delivery, which not only expands the offer of interfaces and adds a Blu-Ray burner but also improves the graphics performance with the external Radeon HD 7670M. However, the video card cannot fully keep up with other HD 7670M systems.

The overall design of Sony is, despite its weaknesses, quite appealing and should interest business clients, also because of its integrated safety features. Due to its weight and size, it can be transported quite easily and the Power Media Dock is a welcome supplement. Sony VGP-BPS5 battery

However it is uncertain, if the mentioned underclocking of the processor only appears in this test model, is series specific, or even was intended to improve the battery runtime and lower emissions. We will try to get our hands on another test device for control measurements. The evaluation stays reserved until clearance.

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Review Update Lenovo ThinkPad X121e (AMD E-300) Notebook
In September 2011, we reviewed the Lenovo ThinkPad X121e featuring an AMD E-350 CPU. In this review, we consider a variant of the X121e that features the AMD E-300 APU, 4 GB RAM, a 320 GB hard drive, and the FreeDOS operating system. Lenovo IdeaPad G575L Charger This particular variant is in most aspects similar to the X121e already reviewed and, as a result, we will limit our review to highlighting the differences of this variant. Information regarding the features and input devices can be found in the original review.

Both the AMD E-450 APU and an Intel CPU are available for slightly more than our test system with its entry model configuration and the optional Windows 7 that we selected. Lenovo IdeaPad G575M Charger As a result, we will consider both the performance-to-price ratio and feasibility of this notebook in the course of our review.
Case

As with the previous X121e, the case shows weaknesses in several keys areas such as the touchpad and battery. Users have reported that the casing lifts slightly around the upper part of the display frame and around the wrist rest. While the middle of the display lid has rubber standoffs on the display frame that allow for a good fit, those for the edges of the display are not thick enough to fill the gap when the unit is closed. Lenovo G470 Charger This does not cause any real issues but can lead to dirt and grime on the display during frequent use. This defect is unlikely to cause serious harm to the display in regular use, but the display is more susceptible to damage if pressure is applied to the display lid directly. This is something that should be avoided in all notebooks, however.

Display

Lenovo G470A Charger The display in our sample unit is identical to that of the previously reviewed X121e – an 11.6-inch LED-backlit 1366x768 (WXGA) display. Lenovo's datasheet confirms that the specifications remain unchanged.

The WXGA resolution provides a good balance between available work space and the size of icons and text. This balance is perhaps the only good aspect of the display. Our measurements demonstrated that the display brightness has significantly dropped. Lenovo G470AH Charger The previously reviewed model featured an average brightness of 192 cd/m2 whereas the sample in this review was only capable of an average brightness of 137 cd/m2, reflecting a reduction of 50 cd/m2. This brightness is barely enough for indoor use despite its matte screen. This low brightness may make the unit unusable even under bright interior lighting and represents a clear step backward. This display does not meet the versatility requirements of modern notebooks. Lenovo G470G Charger The primary benefit of the display – being able to use maximum brightness without a significant increase in battery consumption – is entirely offset by the lack of screen visibility. Contrast, colors, and viewing angles show no discernible improvements over the previous variant. This allows us to conclude that this is one of the worst displays we have reviewed in the past several years. Lenovo IdeaPad G470 Charger

Performance

Compared to the AMD E-350 APU from the previously reviewed X121e, this variant uses the AMD E-300 APU, lacks dual-channel memory support, and has a CPU clock of 1.3 GHz, 300 MHz less than the E-350. The Radeon HD 6310 still serves as the graphics card and maintains its 500 MHz clock speed. The 18 Watt Thermal Design Power (TDP) also remains unchanged. Lenovo IdeaPad G470A Charger
Processor
It should go without saying that the slower AMD E-300 underperforms the AMD E-350 used in the previous ThinkPad X121e. In our CPU benchmarks, we observed a performance reduction of about 20 percent due to the reduction in CPU clock speed. The E-300 achieved 941 points and 1809 points in Cinebench R10 64-bit Single- and Multi-CPU benchmark tests respectively. By comparison, the E-350 achieved 1158 points and 2196 points in the same tests respectively. The SuperPi 32m test took 2920 seconds instead of 2427 seconds as well. Lenovo IdeaPad G470AH Charger

We observed no throttling due to overheating or power constraints. The included 65 Watt power supply was adequate and the cooling was sufficient to keep the system temperatures quite low.

On battery power, we observed a CPU clock speed reduction. In the Cinebench R10 64-bit tests, the CPU scored 921 points (down from 941 points) and 1794 points (down from 1809 points) for Single- and Multi-CPU tests respectively. Lenovo IdeaPad G470G Charger
System Performance
In practical use, there is barely any noticeable difference in speed compared to the AMD E-350 model. Productivity programs and light photo editing were both smooth and one could work without interruption. Heavier tasks such as audio and video conversion highlighted the decreased clock speed. For example, converting MP3s using iTunes was done at a 9.2 speed instead of the 11.1 speed achieved by the E-350. Lenovo B570 Charger By comparison, the Intel Core i7-3610QM CPU achieved a speed of over 50 in iTunes. One might easily experience an increased conversion time of several minutes going from the E-350 to the E-300, depending on the number of MP3s that need to be converted.
Storage Devices

The test ThinkPad was equipped with a slim 7 mm (0.28 in) 7200 RPM Seagate hard drive. This drive proved to be relatively fast but also relatively noisy.

Lenovo B570A Charger A solid state drive (SSD) would definitely improve the performance but would far exceed the total cost of the system. As well, the weaker CPU could potentially throttle the SSD. Our sample did not support any mSATA SSDs. We attempted to use a 64 GB Crucial M4 in this slot and our test notebook was unable to detect it. From this, we conclude that the slot is reserved for 3G modules with integrated antennae. Lenovo B570G Charger
Graphics Card
The ThinkPad X121e's graphics card is the CPU-integrated AMD Radeon HD 6310 and features identical technical specifications as in the AMD E-350 APU. We expected worse results considering the weaker CPU. However, we achieved a 3DMark06 score of 2211 points reflecting a 200 point gain over the previous ThinkPad x121e with the E-350 APU. We attribute this performance gain to improved drivers that optimize performance. Lenovo IdeaPad B570 Charger In 3DMark Vantage, we observed almost identical results with the AMD E-300 scoring 707 points and the E-350 scoring 720 points. The E-350 also came out ahead in the Cinebench R10 64-bit OpenGL shading test with 1881 points compared to the E-300's 1707 points. These differences are measurable but perhaps not significantly noticeable. In the real world gaming performance of StarCraft 2, the difference corresponds to a reduction of only 2 fps. Lenovo IdeaPad B570A Charger

On battery power, the Cinebench 64-bit shading test result dropped from 1707 points to 1590 points. This difference was amplified in 3DMark06, dropping the score from 2211 points to 1627 points. It is clear that one should expect graphical performance losses when running on battery power.
Battery Life

Lenovo IdeaPad B570G Charger The previously reviewed sample had a very good life and our current sample is almost on the same level. The lower CPU clock speed and brightness yield better results in Wi-Fi surfing and the BatteryEater Classic Test. In typical usage with maximum brightness, one should expect five to seven hours of battery life.
Verdict

Lenovo V370 Charger Despite its low price, we do not recommend this configuration of the Lenovo ThinkPad X121e. The dimly lit display, and its corresponding low contrast, is not on par with modern notebooks and limits its usefulness. While battery life, weight, and size are suitable for portability, the impractical display makes no sense.

Lenovo V370A Charger The reduced CPU clock speed of the AMD E-300 APU is barely noticeable but this speed loss yields no real benefits. The price difference between the E-300 and E-350 is marginal and the battery life difference is negligible.

Lenovo V370G Charger The case's build quality and the reaction time of the touchpad remain irritating. The remaining qualities of the system are the low entry price for the Windows-less version, 3G-readiness, and high mobility in terms of battery life, weight, and size. These positive aspects, however, will only appeal to those who are unaware of the rather large drawbacks.

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Quick Review Acer Aspire 7739Z-P624650MNKK Notebook

The Aspire family offers a variety of differently equipped models in various sizes. The 7739z is a 17.3-inch laptop at the lower-end of the performance spectrum. Acer Aspire Timeline Ultra M3 battery The system, which features an Intel P6200 processor and integrated Intel HD Graphics, has enough performance to tackle everyday tasks like internet browsing, office work, and videos - but unlike the Aspire members featuring a "G" in their name, it's not really suitable for more demanding 3D tasks (think modern computer games).

Case

The exterior of the Aspire 7739Z is, except for the form factor, nearly identical to the 15-inch Acer-TravelMate-5744Z-P624G50Mikk. The black / charcoal gray chassis is made entirely out of plastic which is partially textured. Acer Aspire M5 battery

The main unit appears to be solidly built, is resistant to deformation and torsionally rigid. Because of the size and weight (3.3 kg), the display doesn't really lend itself to being opened from the corner but it resists twisting surprisingly well. The screen handles pressure reasonably well; only a fair amount of force will cause a change in the picture.

ACER Aspire S Series battery When we examined the Aspire closely, we discovered the same minor flaws that we noted when testing the TravelMate-5744Z: a few sharp edges and inconsistent gaps, especially around the display frame.

Considering the size of the LCD panel, the display hinges are stiff and comparatively small which causes the lid to rock back and forth after it's been opened. Opening the lid one-handed causes the base of the laptop to lift up a bit. ACER Aspire S7 Series battery

Power Consumption
During idle, the notebook consumes between 11.3 and 20.4 watts which is in the same range as other systems like the HP 630-LH384EA or the Acer TravelMate 5744Z-P624G50Mikk. During maximum load, the 7739Z is the most power hungry out of the three systems - we need to consider though that the screen brightness is superior; the Travelmate also only features a smaller 15" monitor. Acer Aspire S Series battery The higher power consumption seems to be justified; and overall it doesn't seem to be too excessive. Compared to the more modern and significantly more powerful Sandy Bridge or Ivy Bridge architecture, this Arrandale-based systems seems downright archaic though.
Battery Life
The 7739Z comes equipped with a 48WH lithium-ion battery - a similar capacity battery is included with the HP 630-LH384EA and the Acer TravelMate 5744Z-P624G50Mikk. Since our test model consumes more power, it's not surprising that battery runtime is the lowest of the bunch. Acer Aspire S3 battery

For our BatteryEater Reader's Test, we turned down screen brightness to the lowest level, turned of WLAN, and chose the "energy saving" power profile. The laptop lasted for 270 min before shutting down wth 5% capacity left. During the more realistic WLAN test, the laptop reached the 5% threshold after 92 min. We wanted to change the 5%-capacity setting to 3% but where unable to do so. ACER Aspire V3 battery

Connectivity

For a 17.3-inch laptop the connectivity options are fairly limited - something one should expect in this price range. On the plus side, both VGA and HDMI ports are included, allowing for analog and digital display connections. The built-in 2-in-1 card reader supports SD and MMC. Unfortunately the 7739Z only offers 3 USB 2.0 ports but no faster options like eSATA or USB 3.0 for transmitting data from and to external storage devices. ACER Aspire 8943G battery

The placement of the ports towards the front of the laptop is less than ideal if they are utilized heavily because cables can get in the way. In addition, some ports (for example the USB ports on the right hand side) are placed very closely together. On the other hand all ports are within easy reach.

Communication
ACER Aspire Ethos 8943G battery The cabled ethernet connection via the Atheros AR8152 PCI-E Fast Ethernet Controller operates at 10/100MBit but not GigaBit speeds. Wireless connectivity to WiFi-Hotspots is provided by the Atheros AR5B125 Wireless Network Adapter (bgn) which also supports standard N. Bluetooth or an integrated broadband modem are not available.

ACER Aspire One E100 battery The low-resolution Acer Crystal Eye Webcam (640x480 Pixel; 0.3 MP) is adequate for video conferencing but not for more demanding applications.

What's in the box
Included are only the most basic necessities like the power adapter, battery, and informational material like quick-start guide and warranty information. The user is responsible for creating a system recovery DVD as one isn't included. This task can be easily accomplished using Acer's eRecovery Manager.

Maintenance
Acer Iconia 6120 battery The covers on the underside of the laptop only allow access to the hard disk drive, the RAM module, and the WLAN module. The battery is user replaceable but the laptop can be used sans battery without any issues.

Warranty
According to the Homepage, Acer offers a 2 year standard warranty for all Aspire models in Germany; the first year is ITW (International Travelers Warranty).

Performance

Acer Iconia 6886 battery As far as the internal components are concerned, our laptop mirrors the 15-inch TravelMate-5744Z. Here is a quick synopsis:

The Pentium P6200 is based on the (now two year-old) Arrandale architecture. Potential buyers have to do without Turbo Boost or Hyperthreading.

Acer TravelMate 8372 battery The P6200 integrates a DDR3 memory controller and the DirectX 10 capable Intel GMA HD Graphics, which runs at 500 MHz (Turbo up to 667 MHz). The 2.13 GHz dual-core processor has, according to Intel, a TDP of 35 Watts. Thanks to the 4GB of available RAM (1 slot) and the 500GB hard disk, the laptop handles normal office tasks well; for much more the hardware configuration just isn't sufficient.

Processor
Acer TravelMate 8372G battery Subjected to the Cinebench R11.5 64-bit test, the 7739Z was only able to eke out a fairly mediocre 0.71 points during single-core rendering and 1.4 points during multi-core rendering. The results are in line with other P6200-equipped laptops though. Newer Core i3 entry-level processors offer quite a bit more performance. For additional information, check out our processor page; to compare other processors, take a look at our CPU benchmark comparison.
System Performance
Acer TravelMate 8372T battery PCMark Vantage evaluates the overall system performance and its core components. Our test system reached a score of 4357 here - since the laptop uses the same components as the TravelMate-5744Z, it shouldn't come as a surprise that the performance of the two laptops is nearly identical. Considering the hardware being used, this is pretty much exactly what we expected performance-wise.
Storage Devices

Acer TravelMate 8372TG battery The hard drive the system ships with is a Western Digital-sourced Scorpio Blue WD5000BPVT-22A1YT0 spinning at 5400 rpm and offering a capacity of 500GB. The hard drive is partitioned: 13.5GB are assigned to the Recovery Partition; 452.16GB are available as the C: - drive for system- and user data. The benchmark results mirror what we've come to expect from 5400 rpm hard disk drives.
GPU Performance
Acer Iconia Tab W500 battery Intels HD Graphics offer the manufacturers of notebook systems an inexpensive graphics solutions since the card is packaged with the CPU. The video decoder is capable of smooth playback of movies and trailer at 1080p; 3D-performance is extremely low though. The Acer reached 1567 points during 3DMark 06 - a fairly typical result for this kind of hardware. The graphics card can't handle 3DMark Vantage and errors out with a "std::exception Device removed".
Gaming Performance
Acer Iconia Tab W501 battery Considering the hardware specs, there is no doubt that the 7739Z is not a gaming system. Games with low demands on the hardware are playable though. We tested the (slightly more) taxing Diablo 3, and managed a not-so-smooth 20 fps at the lowest setting. We performed additional tests of various games during our review of the TravelMate-5744Z, which uses the same hardware. Our list of games shows the performance of various games using different graphics solutions.
Emissions

Noise Level
Acer Iconia Tab A100 battery The fan rarely kicks in during system idle and is almost inaudible at 31.5 dB(A). Hard drive access noise increases the level to 33.2 dB(A). The high-frequency humming of the power adapter gets annoying after a while. Under load, noise levels increase to a value of 38.3 dB(A) which is still fairly quiet. When playing movies, the DVD drive is very audible at 40.2 dB(A).
Temperature

Acer Aspire 4250 battery Our test candidate stayed cool during idle. As one would expect, the temperature increases under load - we measured 38 degrees Celsius (100.4 Fahrenheit) on the bottom, and 43 degrees Celsius (109.4 Fahrenheit) on the top, respectively. The hand rest remains cool to the touch.

Acer Aspire 4251 battery During full load, internal temperatures can reach 70 degrees Celsius (158 Fahrenheit) - still an OK number. The CPU does not get throttled - which is something 3DMark06 confirmed: the values after our load test are identical to ones we got during the "cold" system performance test.
Speakers

Acer Aspire 4252 battery The speakers are located above the keyboard. The maximum volume could be a bit higher but the sound remains distortion-free. We found the bass to be lacking - a pretty common scenario with built-in speakers. The 3.5mm audio jack functions without any issues. HDMI allows for digital transmission of audio signals.
Verdict

Acer Aspire 4253 battery You just can't expect too much from this value-priced 17-inch system. It doesn't have a lot of interface options and no fast ports for connecting external storage. The display is a glare-type and unsuitable for extended (professional) use. The hardware dates back to 2010 and is not sufficient to run demanding 3D games.

On the other hand, performance is more than adequate for running office applications or internet use. Considering the price point, the quality of the input devices and the chassis is not bad at all and the display is at least bright enough. Acer Aspire 4253G battery

Target audience for the Aspire 7739Z is the value-conscious home user who doesn't intend to play games. This price bracket offers a never-ending supply of constantly updated systems - some utilizing more current hardware. Shopping around pays off - if 500 Euros is your upper limit, take a look at the (AMD based) HPs Pavilion g7 or Packard-Bell EasyNote LK11.

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Review Acer Aspire 5250-E304G50Mnkk Notebook

In March 2011, we tested the Acer Aspire 5253. This system featured the then brand new AMD Fusion platform, the AMD E-350 (2 x 1.6 GHz). AMD later released the E-450, a fairly minor update to the E-series, which didn't really have any impact on performance and features. Acer Aspire Timeline Ultra M3 battery

This time around, Acer installs a new E-series processor into a chassis that remains 95% unchanged from the last model. Not a very exciting prospect, since the new CPU E-300 has a lower core frequency (2 x 1.30GHz) and uses the same GPU as the E-350/450 (Radeon HD 6310). Why a downgrade? Do we really need a "new" CPU that is slower than the models from over a year ago? We can at least hope that the lower core frequency will allow for longer battery life. Acer Aspire M5 battery

We had to look very hard to find any differences to its predecessor, the Aspire 5253. The Acer logo, which was comprised of single letters in the middle of the lid, is now embedded as a label in a corner. The old model had status LEDs for the HDD and the WLAN next to the power button. These status lights were completely eliminated on the new laptop. Guess we have to listen to the hard drive to figure out if the system is busy or not. ACER Aspire S Series battery

The chassis is now less rigid. It's easy to twist the base unit and the display lid. At least the lid is sufficiently solid. We like the feel of the textured matte surfaces which resist smudges and finger prints very well.

The hinges hold the display well without allowing it to rock back and forth. They are a bit tight though, so both hands are needed to open the display. The maximum angle of 160º is more than adequate while using the notebook on the lap. ACER Aspire S7 Series battery
The photos show the port selection to be pretty meager. There is an empty spot where the previous model had an HDMI port. The number of USB ports hasn't been increased though, with only three. Reason for the missing HDMI port might be pointed to the manufacturer who had to pay a license fee when integrating such a port. The position of the USB ports on the left and right side is not the best, as cables plugged into them and the VGA port can interfere when using a mouse. Acer Aspire S3 battery At the very least, having the cables stick out looks untidy.
Communication

Internet connections are available via Ethernet and WLAN. Both modules are the same ones found in the Aspire 5253. The Atheros AR5B97 WLAN card lost the Bluetooth 3.0 module. The Atheros AR8151 Ethernet Adapter supports Gigabit-Ethernet.

Accessories ACER Aspire V3 battery

There are no recovery discs included in the box - a common trend we've seen for a few years now. The user has to create his/her own recovery disc set using the Acer Recovery Manager. The number of pre-installed software titles is fortunately not too overwhelming. Acer GameZone, Accessory Shop, Registration, Updater, and Office 2010 Starter are of course part of the package. ACER Aspire 8943G battery The biggest pre-installed program is NTI Media Maker 9 which is used to convert video files and to burn optical discs. The inclusion of said software is actually not very generous on Acer's part, since Media Maker 9 can be downloaded for free.
Power Consumption
ACER Aspire Ethos 8943G battery Does the low performance translate into equally low power requirements? With all energy-saving options enabled and the display brightness turned down all the way, idle power consumption is only 7.6W (Aspire 5253: 9.7W). A more realistic scenario is the maximum idle power consumption of 12.6W. All things considered, the Aspire 5250 is not that energy efficient. Even a well-equipped multimedia notebook like the Samsung 550P5C-T02DE with an i5-3210M and GeForce GT630M, only requires 8.3/11W (minimum/maximum) during idle (5250: 9.7 to 13.6W). ACER Aspire One E100 battery

During 3DMarks 2006, power consumption rose to 26W. Maximum power requirement during the stress test (Prime95 & Furmark) was 28W. The power adapter is rated for 65W and hence more than adequately sized.

Battery Life
Acer Iconia 6120 battery The AMD Fusion system with the longest run time (WLAN-test) is the Samsung 305U1A-A01DE. This 11.6-inch system lasted for almost 9 hours. The HP Pavilion dm1-3180eg kept running for about 7 hours, while the Lenovo ThinkPad X121e NWS5QGE lasted for about 5 hours (both are 11.6-inch systems). Our test system lags a bit behind with only 4 hours. The older Aspire 5253 managed almost 5 hours in the same test. Acer Iconia 6886 battery

The 48Wh battery can't be the culprit because the Aspire 5253 came with a battery offering the same exact capacity. It takes 1 hour 35 minutes to recharge a completely depleted battery. When we were playing a DVD movie, the laptop ran out of charge after 3 hours 25 minutes.

Performance

Acer TravelMate 8372 battery Acer equips this 15.6-inch notebook with the dual-core APU AMD E-300 (2 x 1.3 GHz). This particular processor is in the same family as the E-450, which is used in some versions of the Aspire 5250. The APU (Accelerated Processing Unit) has a TDP of a miserly 18W and is particularly well-suited for small notebooks. The Integrated Graphics Unit, a Radeon HD 6310, has DirectX-11 support and a UVD3 Video Decoder. It is marginally slower than the HD 6320 in the APU E-450. The APU has access to 2 x 2048 MB of DDR3 RAM. Acer TravelMate 8372G battery The hard disc drive is a Western Digital (WD3200BPVT-22JJ5T0) with 320GB storage space. The OS supplied is Microsoft Window 7 Home Premium (64 Bit).

Processor
Acer TravelMate 8372T battery Looking at the scores of the E-300, we can only come to one conclusion: this processor ranks at the bottom of the pile. It almost seems ludicrous to pair up a CPU offering basically netbook-like performance with a 15.6-inch laptop when Intel's low-cost Pentiums offer so much more performance. There has to be demand, however, since there is even a 17-inch notebook with the APU E-450 (Packard Bell EasyNote LK11-BZ-080GE). Acer TravelMate 8372TG battery

Subjected to Cinebench R11.5, the E-300 was only able to reach 0.46 points. Other processors, like the Pentium P6100 (+185%), Core i3-350M (+224%), i3-2310M (+340%), or the AMD A4-3300 (+146%) are substantially faster. The only CPU that manages to be even slower is the netbook processor Atom N450 (-43%). CPU performance remains the same whether the laptop is on battery power or on external power. Acer Iconia Tab W500 battery Other notebooks with the same performance are the Aspire One 722-C62kk (C-60) and the ThinkPad X121e NWS62GE (both have 11.6-inch screens).
System Performance
More important than the processor benchmark is the evaluation of overall system performance. Our test system reached a score of 834 points after we ran PCMark 7 on it. This test takes the speed of the HDD, RAM, and the graphics card into consideration. Acer Iconia Tab W501 battery The HP 630-LH384EA with a Pentium CPU managed to be only about 36% faster here - courtesy of the rather weak Intel GMA IGP. AMD-based A6-systems are, depending on the clock speed and the GPU, 75% to 100% faster. Towards the top we find the Core i3-2350M (+90%). A better GPU can improve performance further like in the Sony Vaio SV-E14A1M6EW, with the Radeon HD7670M (+120%). An Atom (N2800) based netbook, like the Asus Eee PC R052C-WHI002S, is only about 11% slower, despite the weaker GMA 3650.Acer Iconia Tab A100 battery

Storage Devices
HD Tune showed a sequential read speed of 64 MB/s for the 320GB Western Digital HDD. Small and dispersed data reads cause the fairly slow read-write heads to lag behind and the speed drops to 0.4 to 1.0 MB/s. 7200 rpm models do better here. Notebooks with SSDs are significantly faster, as even the slowest ones start at around 120 MB/s and go up to about 376 MB/s. Acer Aspire 4250 battery The hard drive in the Aspire 5250 ended up with a below average HDD score of 2296 points in PCMark Vantage. SSD equipped laptops manage 300% to 2800% better results here.

Graphics Card

Acer Aspire 4251 battery In 3DMark2006, our test system scored 1943 points. This result means that the Radeon HD 6310 has 24% less performance than the HD 6320 in the E-450. Of course the 6310 can't compete with any (even low-end) dedicated GPUs like the GT 630M (+312%) or the Radeon HD 7610M (+221%). Intel's HD3000 was 30% to 150% faster; the current HD4000 tops these results.

Acer Aspire 4252 battery The three game tests that follow show extremely low FPS values even with older games. Playing games should not be on the agenda, period. The main purpose of the Radeon graphics is to relieve the weak APU of HD-decoding duties. This decoding doesn't just happen in the conversion tools like Media Espresso or the (pre-installed) NTI Media Maker 9, but even when using the Media Player.

Acer Aspire 4253 battery Acer's clear.fi player manages to play 1080p clips with CPU utilization below 20% CPU. We were able to start another movie clip in Media Player (CPU <45%) without encountering any stuttering. We recommend not starting too many programs, since the mouse pointer is apt to show significant lag and installations will take forever.
System Noise

Acer Aspire 4253G battery Overall noise level is pleasant. The fan never turns off but doesn't exceed 31dB (A) during idle. During activities like surfing, listening to music, or typing, the fan noise stays constant and discreet in the background. Since the range between idle and load is very small, we could only measure an rpm difference but not hear it. The HDD is now less audible during read/write access than the one in the Aspire 5253. Acer Aspire 4333 battery While the HDD in the predecessor emitted a high-pitched hum of 33.9dB (A), the new HDD remains under the noise level of the system fan.

The game tests we conducted didn't push the cooling system much either, as the noise level remained at 31.9dB (A). Even during the stress test (Furmark & Prime95), we only measured a maximum of 32.9dB (A). As before, the rpm remained constant. Overall the fan control is very well executed. Acer decided to let the fan spin constantly during idle to avoid having it turn on and off all the time. Acer Aspire 4339 battery

Temperature

We measured an average of only 30ºC (86ºF) at the bottom of the notebook during word processing tasks and surfing the Internet (lots of idle time). The palm rest tops out at 27-30ºC (80.6 - 86ºF). The temperatures are slightly higher than the ones we recorded for its predecessor, but we also conducted the tests at a room temperature of 23ºC instead of 19ºC (73.4ºF instead of 66.2ºF). Acer Aspire 4349 battery We can assume that temperatures would have been a bit lower otherwise. Under load, we measured up to 46ºC (114.8ºF) on the bottom. At this temperature, having the machine sitting on the lap is pretty uncomfortable. The APU does not have any sort of turbo mode, so throttling is not an issue. Cinebench R11.5 Multi showed that the cores of the E-300 remain at 1.3 GHz at all times.

Verdict

Acer Aspire 4352 battery Is the never-ending supply of new notebooks offering more features and better performance just too confusing? Acer tries a different approach and downgrades the already low-cost Aspire 5253. Who needs HDMI, after all?

The Aspire 5250 is a notebook on a feature diet. The fact that the CPU (E-300) is even less powerful is something we could overlook, since the E-450 model (2 x 1.65) is also available. But trying to cut features (no HDMI) on what was a low-end model to begin with - that's almost audacious. Acer Aspire 4551 battery

The price difference is only a few euros. Those who don't care much if they pay EUR 369 or EUR 374 should opt for the E-450. The sister model featuring the E-350 also had a longer battery life on our test.

Acer Aspire 4551G battery We honestly can't recommend the Aspire 5250. The Asus Pro P53E-SO136D, X54C and the Lenovo B570 (no OS) are systems in the EUR 375 to EUR 400 price bracket featuring the Core i3-2350. For about EUR 300 you can get yourself a Pentium-equipped TravelMate 5742Z (with Linux OS). Even though that system features obsolete hardware, it offers faster performance and probably about the same battery life. Acer Aspire 4551G-P322G32Mn battery

AMD's E2-1800 (2 x 1.70GHz) with Radeon HD 7340M is truly new. Stay tuned for reviews of the HP 655 (starting at EUR 330) and the Lenovo G585.

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Laptop Battery Care

Battery is what works as powerhouse for all electronic gadgets including laptops, camcorders and IPods. Dell Vostro 1014 battery These batteries supply electrical energy which makes laptops work for you. This battery is manufactured keeping in mind the facets of portability just like watch battery and somewhat like car battery so that it can withstand the operating conditions properly. Dell Vostro 1015 battery

Sound laptop batteries generally last for more than 5 years and that too depending upon the factors like programs you are running and power needs of your system. But many times it happens that you forget to charge your laptop battery and resultantly, you cannot work upon laptop unless you substitute it with replacement toshiba battery. Dell Vostro A840 battery

When you are contemplating to buy laptop battery, you will be normally having perhaps not more than two acer laptop battery options. But before buying it, you must consider about the technology used and make sure it is absolutely efficient for your laptop.

Kinds of dell laptop batteries Dell Vostro A860 battery

There are different kinds of laptop batteries available that can be used in your computer. Some of these kinds are listed below:

The NiCad battery or nickel cadmium battery is generally used in virtually every laptop. This battery can be charged for limited number of times and can work for longer hours in comparison with other batteries like nickel hydride among others. Dell Vostro A860n battery But you have to be cautious every time as you have to charge it before it goes dead. This is because once it goes dead; you will be crippled as it has no back up option available with this.
Nickel hydride battery: this is another battery option available with you. This is an extension of technology in batteries as it can hold more power back up in comparison with the previous alternative. It has better memory effect as you can reoperate it after it becomes used up. Dell XPS M2010 battery
Nickel ion battery: this is far more superior battery and can hold greater power back up than rest of the available options. The best part about these batteries is that it supports multiple kinds of batteries in the laptop system.

Ways to improve battery life

Dell Latitude D420 battery You can opt for any of these options for your laptop, but it is imperative to learn about techniques using which you can improve the performance as well as life of your battery system. Following are listed some of these top rated techniques: ü Conditioning: this technique simply means first of all, completely discharging the battery and thereafter, fully charging it. Dell Latitude D430 battery This practice has to be undertaken around at least twice a week in order to retain full capacity of laptop battery for longer span of time.

ü You should refrain from the habit of storing your laptop battery below 50 ºF or above the levels of 95ºF. In other words, you should avoid leaving your laptop battery either in car of storage room where you do not have stable climate control. ü In order to extend the usability, you must discharge the battery by about 50% capacity in around 3 years. Dell Inspiron 9100 battery These top most valuable techniques can certainly help you in getting better accessibility with the same laptop battery for longer time period.

laptop battery useful tips

Please Pay close attention to the following useful information for your laptops

(A) Reason of damaging battery

After Using the laptop batteries for a long time, you may be dissatisfied with electricity charge, what is worse! Dell Inspiron XPS battery The battery is damaged; the specific laptop battery performance is larger resistance, the voltage changes faster. This easy to charge control circuit judge to have full capacity also falls. As the larger battery internal resistance, discharge voltage drop, high speed, so the system is easy to mistakenly believe that voltage is not enough power is low. ASUS G51XJ battery Comparison of the discovery of short Acer Laptop batteries life, should take corresponding measures.

(B) Refresh program to restore the battery's discharge time

Big brand laptop has a laptop batteries refresh program, we can use it to repair the laptop battery. Asus G51XV battery For example: a IBMThinkpad390/262650 based laptop, the distribution for the nickel-metal hydride battery (Ni-Mh) batteries, as usual discharge properly, leading to the Asus Laptop batteries discharge time is short, only less than 5 minutes, if carrying a laptop to work, then it is very inconvenient, what methods can restore the Acer Laptop batteries's discharge time? Asus N61 battery

In response to these circumstances, we can use the IBM has launched a battery refresh program to refresh the batteries, discharge time to recovery, specific methods are as follows.

(1) The use of AC power to the laptop, the first to ftp://fip. pc. ibm. com / pub / pccbbs / mobiles / isbr01ww. exe download the IBM provided TP390/390e/390x series Acer Laptop batteries refresh program. Asus N61J battery

(2) Restart your computer, press F8 to enter boot menu and select safe DOS mode.

(3) just download the files into the directory, the implementation of the laptop battery refresh program isbr0lww, exe, reading the warning message, insert the floppy disk as required, and then press the Enter key to the implementation of the self-extracting operation. Asus N61Ja battery

(4) Boot floppy disk with this computer, the screen appears StartingPC-DOS. . . Message.

(5) prompted unplug the AC power, the program will automatically be on the Ni-Mh Asus Laptop batteries discharge, discharge is completed, the system will automatically shut down. Asus N61jq battery

(6) The Fujitsu Laptop batteries temperature is high at this time, should not immediately start, after the battery cool for a while, plug the AC power.

(7) boot the computer with a floppy disk, the Autoexec. Bat file will automatically run the refresh program, and ask the user whether to proceed. Select yes, press the Enter key. Asus N61Jv battery

( At this point, refresh process began to refresh the Fujitsu Laptop batteries, the process soon, when the return to DOS prompt A:> when that refresh is complete.

(9) Shut down the computer, and charge the battery until the light turns green so far. Asus N61Vg battery

(10) The above procedure is repeated three times to get the best results.

In the end , many lithium laptop battery pack failure is the result of a failure of energy-saving core, this phenomenon can not be avoided. Because each cell batteries can not be completely consistent with the nature, quality and use for a long time some little worse after the beginning of aging, and damaged the whole (in series) if the discharge curve. Asus N61Vn battery Interest and ability of the reader can try to open the battery pack, the multimeter's help, you can quickly find the damaged laptop batteries (abnormal voltage). If conditions allow, according to the corresponding parameters of batteries can replace the qualified product.

Charge a New Laptop Battery

Laptop batteries are notorious for dying out and losing charge quickly. Asus N61w battery If you treat your battery with the utmost care, you'll have success in getting the most out of it. Know what type of battery you have and understand how it needs to be treated in order to perform. But first make sure you charge your laptop battery properly when using it for the first time. ASUS K40 battery

Your new laptop battery comes in a discharged condition and must be charged before use (refer to your computer manual for charging instructions). Upon initial use (or after a prolonged storage period) the battery may require two to three charge/discharge cycles before achieving maximum capacity. ASUS K40A battery

When charging the laptop battery for the first time your computer may indicate that charging is complete after just 10 or 15 minutes. This is a normal phenomenon with rechargeable batteries. Simply remove the battery from the computer and repeat the charging procedure.

It is important to condition (fully discharge and then fully charge) the toshiba laptop battery every two to three weeks. ASUS K40C battery Failure to do so may significantly shorten the battery's life (this does not apply to Li-ion batteries, which do not require conditioning). To discharge, simply run your device under the battery's power until it shuts down or until you get a low battery warning. Then recharge the battery as instructed in your user's manual.

First Time Charging
ASUS K40E battery The amount of time it takes for your toshiba PA3534U-1BRS battery to fully charge depends on many factors, like your battery type and operating system. Many newer laptops will charge in 15 to 20 minutes, while others can take a few hours.

When you're charging your battery for the first time, charge it fully before using your laptop. ASUS K40N battery You may have to go through a battery cycle a couple times before your battery begins performing at its maximum capability. To do this, charge your battery fully, let it discharge to about five percent, and then fully charge it again.

Battery Maintenance
Charging your battery for the first time is just the beginning. ASUS K40I battery You must give your battery the utmost attention if you want to get the best out of it.

Never let your battery stay connected to a power source once it's fully charged. This leaves the battery in a constant state of charging up, ultimately reducing its life cycle. Once your battery is charged, unplug your laptop AC adapter, or remove the battery. ASUS K40IB battery

When you're storing a battery, expect it to naturally discharge itself about 10 to 15 percent over a four-month period. It's best to fully charge your battery before storage. When you are storing your battery, you should plug it into your laptop every month or so and let it discharge and charge back up a little. Make sure you fully discharge and charge your battery every three or four months. ASUS K40ID battery

Maximizing Battery Performance
There are several tips to preserving your battery life and achieving its maximum performance. One simple thing users can do is turn down the brightness of their screen as low as possible. Another option is to check your battery performance tool installed on your computer. ASUS K40IE battery This will allow you to control exactly how you want your battery's power to be used.

Preventing the Memory Effect – Keep your battery healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-ion batteries which do not suffer from the memory effect. ASUS K40IJ battery

Keep Your Batteries Clean – It's a good idea to clean dirty battery contacts with a cotton swab and alcohol. This helps maintain a good connection between the battery and your portable device. ASUS K40IL battery

Exercise Your Battery – Do not leave your battery dormant for long periods of time. We recommend using the battery at least once every two to three weeks. If a battery has not been used for a long period of time, perform the new battery break in procedure described above.

When you're using your laptop, try not to run many programs at once. ASUS K40IN battery This will kill your battery life quickly, and also try to close down any programs that you aren't using at the moment. Go into your computer's settings and adjust features like screen savers, sleep/hibernate mode and auto-save functions to suit your desire.

If you don't plan on using the battery for a month or more, we recommend storing it in a clean, dry, cool place away from heat and metal objects. Ni-Cd, NiMH and Li-ion batteries will self-discharge during storage; remember to break them in before use. ASUS K40IP battery Sealed Lead Acid (SLA) batteries must be kept at full charge during storage. This is usually achieved by using special trickle chargers. If you do not have a trickle charger, do not attempt to store SLA batteries for more than three months.

ASUS K40S battery For Notebook Users – To get maximum performance from your battery, fully optimize the notebook's power management features prior to use. Power management is a trade off: better power conservation in exchange for lesser computer performance. The power management system conserves battery power by setting the processor to run at a slower speed, dimming the screen, spinning down the hard drive when it's not in use and causing the machine to go into sleep mode when inactive. Asus f52 battery Your notebook user's guide will provide information relating to specific power management features.

Battery Life Controls Your Laptop Battery

Newhope-United States-Aug-4-2010-The average maximum life of a Laptop Battery is considered to be somewhere about 4 hours. However, this may not hold true for each and every laptop because there are various factors that contribute to the run-life of a laptop battery. SAMSUNG NT-N145 battery Irrespective to your laptop brand, a poor quality battery is sure to kill the productivity of your equipment.

The laptop batteries manufacturers today concentrate extensively on the advantages of using Lithium ion in the making of batteries. The superior quality of lithium ions over nickel based and other lead based batteries makes it a number one choice and their applications in various products are increasing by leaps and bounds. Samsung NC10-14GB battery Lithium-ion based batteries generally provide about 300-500 discharge/ charge cycles and these batteries are recommended to be partially discharge rather than fully. Therefore, avoid frequent full discharges instead follow a regime of charging at regular time frame.

Samsung NC10-14GW battery Dell laptop battery manufacturers advices their customers to refrain from the myth that frequent discharging and charging increases the life of a Lithium ion technology battery. Another most widely asked questions by laptop users are over the life of the battery if it is left overcharged. According to Dell laptop battery manufacturers, the life of a laptop battery is unaffected by charge and discharge, they are designed in such a way that the battery automatically shut its charger use once it is fully charged. Samsung NC10-14GBK battery

Moving on further, the most important 'must-knows' behind every battery-supported equipment is that if you are not going to use the product for a long time then the battery should be removed from it. Storage can make a lot of difference to the run-life of the battery, so the best method is to store it in shady place away from the direct exposure of sunlight, cool and dry place, metal objects and heat. Samsung NC10-11GP battery

If you are looking to obtain discount laptop battery, make sure you complete your ground checks on all aspects of the replacement battery maker and product features, compatibility with your laptop, components of the battery, quality certification and the warranty period. Samsung NC10-11PBK battery Electronics based equipments are generally prone to 'wear and tear' therefore frequent change and repair can leave a hole in your pocket. Brand name like Dell offer their laptop battery with a one year warranty during which Dell technical support ensure the optimum safety and performance of the product. Samsung NC10-KA03 battery Laptop Battery One is a leading provider of high quality and capacity laptop battery at affordable costs. The webstore caters to all your laptop battery replacement needs and it has amazing offer on branded, non branded batteries of high capacity, it offer customer satisfaction scheme like the 60 Day Money Guarantee. Like Dell laptop battery, the company also offers a one year warranty on all its laptop batteries. Samsung NC10-KA04 battery

How To Test The Capacity Of Laptop Battery AC Adapter?

Mobile computing is analogous to laptops, notebooks and net books. Without a good laptop battery charger a laptop is lifeless and limp. Laptop AC adapters vary according to the make and model in terms of designs, input tip, voltage, watt output etc. Irrespective of which laptop brand you own most of the internationally well-known brands provide the minutest details of a battery charger on the back of the adapter. Samsung NC10-KA05 battery The hieroglyphic symbols on the power back apparently are technical representations of the authenticity and legitimacy of the product. As a laptop user it is very important to ascertain if the laptop giving the right amount of power supply as indicated in the power back sticker.

No matter if it is a Toshiba laptop battery or a Dell laptop battery the rule of the game is practically the same. Samsung NC10-KA06 battery The main function of laptop adapters or power bricks is to convert Alternating Current (AC) into Direct Current (DC) which the laptop can then use as a power source. If poor flow of power or disruption in its flow exists then the computer is bound to exhibit minimal charge or not at all. How to keep a tab on the performance of the AC adapters plays a crucial in determining the performance of the laptop, notebook or netbooks. Samsung NC10-KA06DE battery Testing AC adapters for the power capacity it promised on the product sticker is easy and simple.

1. When you buy laptop battery charger always check out the power pack sticker for details on the adapter and its compatibility with different brands and models. Samsung NC10-KA07 battery The purpose of the LED light in most laptop adapters is to indicate the charging status, when it illuminates it indicate that power s being supplied to the laptop. Unfortunately, 100% accuracy may not be delivered by the LED light and some point of variation exists.

2. Ensure that the adapter is plugged in properly to the power outlet and it is well-secured. Samsung NC10-KA08DE battery

3. Find out the voltage ratings generally given on the bottom of the laptop adapter.

4. First, you may need to get a Volt/Multi Meter and in it insert the wirings into the right places— red wire to the positive slot and black wire to the negative slot. Ensure that the ends are plugged in without the plastic handles. Samsung NC10-KA01US battery

5. Even if you have bought a cheap laptop battery the test applies to any laptop battery. Now, set the Multi/Volt Meter to DCV (Direct Current Voltage). After that set the voltage higher than the voltage mentioned on the adapter. Usually, the number on the Volt/Multi Meter is left to the number 50.

6. You may then put the tip of the red conductor inside the adapter and the tip of the black on the metallic edge of the adapter. Samsung NC10 Mini battery

7. Refer the needle reading for the correct amount of power supply. The reading should show the needle landing on the voltage marking near the voltage listed on the back of the adapter. If the result doesn't show any of the above then your laptop battery may require replacement.

Your laptop battery life is typically determined by the condition and performance of your battery AC adapter. Buy Laptop Battery or Buy Laptop Charger, regularly testing its power capacity can boost your battery's usability tremendously. Samsung N110-12PBK battery

How to maintain a small laptop battery proposal

What laptop battery maintenance mode? What is the use of laptop battery maintenance to be bad news? Notebook battery maintenance in the end or not to pull out the books, pull out the If the power is how to do? Notebook battery maintenance of good to be able to use the longest words long? See below, it will know.

Samsung NC20 battery Laptop battery long time, it is often sufficient dissatisfaction, or even show damage, if coupled with maintenance of normal laptop battery is not good enough to do anything, even accelerated aging of the battery to the speed! Therefore, attention must be used in a small number of maintenance skills. Whether you're in laptop use in a lithium battery or nickel metal hydride hp pavilion dv4 battery , as far as possible to the basic battery charge after the exhaustion (power less than 5%), which is to avoid battery memory effect in the best way. In fact, the lithium-ion battery has some way memory effect, but much smaller than the nickel-metal hydride batteries Bale. Samsung N120 Mini battery But it needs attention to is charging the battery, try to avoid too long, the general control within 12 hours. With the use of laptop battery maintenance bogey with the full!

Laptop battery in life not by the length of the total use of time, but by deciding to charge and discharge times. Samsung N270 Mini battery This is the laptop battery maintenance to the importance of – life lithium-ion laptop batteries to be determined by the charge and discharge times! If you're using laptop in when the battery has been fitted to the laptop instead of taking off, even if shut down the machine and remove the After AC power supply, the battery will not like you imagine it has to land when fully charged state. Because the laptop hp pavilion dv5 battery is used to integrated control circuit, even when turned off the computer to also power. Samsung ND10 Mini battery One connected to AC power, the battery is not the time to full power, and thus will soon start charging. Thus, when turned on or off the power, you will repeatedly to laptop battery charge and discharge, reducing the battery to life, this is laptop battery maintenance of a bogey ground.the right to set power management. You can accept the way in the context of the hard disk and screen into standby or hibernation to set too short as possible. SAMSUNG RF712 battery

Many of my friends would ask, is it choose to enter "standby" status is good? Or "sleep" state is good? Which of the two more hp pavilion dv6 battery power? The answer is to use as the case may be. SAMSUNG NP-RF712 battery In fact, the difference between the two places: when the system standby to save the data into memory, this advantage is the machine to wake up in a short time, wake-up process is also less power consumption, but in standby process, machine memory in order to maintain the data, will slow battery to power consumption; sleep in time, the system sucked the data saved to disk, do not consume after, but to sleep and wake up to a lot of time in the consumption of electricity. SAMSUNG NT-RF712 battery Individuals to leave the computer experience is that if within an hour of sleep than Standby power, if left to long, then more power is the way of sleep. Of course, by way of saving can also be "off", huh, huh!

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Changing Laptop Batteries

Changing aToshiba laptop battery is a relatively simple process. Lenovo ThinkPad X60 Tablet PC battery Typically, a new lithium Ion laptop battery will give satisfactory performance through approximately 500 charge-use-recharge cycles. This translates to approximately three years of working life with light-duty use.

Early laptops were run on standard AA size batteries. However, they consumed so much power that they could run on one set of HP notebook batteries for only a few hours. Lenovo ThinkPad X61 Tablet PC battery The first commercial IBM-compatible laptops were small and light enough to be carried in a backpack, and could be run on lead acid batteries, the type used in cars.

The latest generations of batteries used in laptops are called 'smart batteries'. This is due to the ability of the battery to communicate with the laptop user. Unfortunately, the definition of a 'smart battery' is not universal, but varies among different manufacturers and regulatory authorities. Lenovo Thinkpad R400 battery Some manufacturers call their Dell laptop batteries 'smart' because their batteries incorporate a pre-programmed chip that sets the charger as per standard requirements.

Most 'smart' battery chargers are controlled by the parameters of the chemical cells. Lenovo Thinkpad R61 battery Once the chemical cell has degraded, the laptop battery has to be changed. In some cases, the chemical part of the battery can be fully restored but the fuel gauge may become inaccurate or other data may get corrupted. In such cases, even though the digital readout becomes inaccurate due to malfunction, the battery will still fully charge and function normally for some time. Lenovo Thinkpad R61i battery

At the end of its working life, the reversible chemical processes inside a laptop battery degrades substantially. This leads to a state where the battery is unable to provide power to the laptop unless it is connected to the main 110 Volts supply through an adopter. This means that the laptop effectively becomes a desktop. Lenovo Thinkpad T400 battery

When the time comes to change the laptop battery, it is better to buy a replacement battery from the agency, which sold the laptop. It is also advisable to request the battery suppliers to replace the battery, as they would be more familiar with the procedure.

Top-15 Laptop Battery Usage Tips Lenovo Thinkpad T400 battery

Top-15 Laptop Battery Usage Tips:

1. New Laptop battery pack must be fully charged and discharged before use.
2. New Laptop battery pack needs to be fully charged and discharged (cycled) 2-3 times before it can condition to full capacity.
3. Laptop batteries undergo self-discharging when left unused. Always store a laptop battery pack in a fully charged stage for storage.
4. Fully drain and fully recharge your laptop battery pack every 1 or 2 months. Lenovo Thinkpad T61 battery
5. Turn down the LCD brightness of your Laptop notebook.
6. Use built-in power management on your Laptop notebook.
7. Turn off LCD or other unnecessary accessories when not in use.
8. Add more RAM if you have extra RAM expansion slot, it will reduce the usage of hard drive and it is power exhaustive.
9. Close unused software in your Laptop notebook.
10. Remove unused PC cards or usb devices from your laptop notebook.
11. It is better not watch films or play graphics intensive video games. Lenovo Thinkpad T61p battery
12. Don't short circuit terminal or store your laptop battery pack with metal parts.
13. Don't drop or mutilate the laptop battery pack.
14. Don't expose to moisture or water.
15. It is normal to get warm when charging or normal use. If it is getting too hot, there may be a problem with your laptop notebook and qualified personnel should check it.

Some other useful informaiton for laptop batteries: Lenovo Thinkpad T61u battery

How long does a laptop battery last?
The life span of a Notebook battery is about 1.5 to 3 years operating under normal conditions. As rechargeable laptop battery begins to die, the user will notice a decline in the running time of the battery. Lenovo 3000 C100 battery

The Rating for laptop Battery
V(olts): The voltage of the new laptop battery should always match the voltage of the original.
mAh: It standards for milli-Amp hours (1 mAh=0.001Ah), High amp-hour ratings means a longer run-time and will not cause incompatibilities.

How to take advantage of your laptop battery? Lenovo ThinkPad X300 battery

A majority of laptop users are hardly acquainted with how to protect and take advantage of batteries. Each time they complain about the short life of battery, seldom self-criticizing in light of usage of battery. Though, the quality of battery existing, factitious misunderstanding and misusage rest one of the components.

1.The first time we receive a laptop battery, we are supposed to charge it for 12 hours. Lenovo ThinkPad X301 battery

Not necessarily at all. Nowadays laptops are set up with perfect electrics circuit and charging management systems. Once the battery is charged in saturation, the control circuit will automatically shift to turnoff. As a result, no more charging will happen.

To avoid memory effect, should we discharge the battery before charging it? Lenovo ThinkPad X200 battery

It is not necessarily to use up the battery before charging, which proves to be deleterious to the battery in that deep discharging will shorten the life of battery. It is suggested that when the resting electricity reaches 10%, the battery should be charged. On the other hand, up to 30% capacity does not require charging in view of memory effect.

When plugging in the alternating current, do we need to take the battery out to prevent repeating charging? Lenovo ThinkPad X200s battery

What we suggest you is "No". You might take the automatic discharging of Li-ion battery for example, that once plugged into the power, repeating charging and discharging will shorten the life of batteries. What I want to emphasize it that:

1.Most electrics recruits are designed in light that only when the battery electricity reaches 90% or even 95%, it will get charged. With the same capacity, it will take two weeks to one month to discharge. Lenovo ThinkPad X201 battery As a result, when in store for less than one month, the battery should be fully charged and discharged to maintain the capacity. What you are concerned should be the exercising rather than the recharging of the battery.

2. Even the battery is unfortunately charged, the loss it brings will not exceed that after long-term storage. HP HSTNN-Q78C-3

3. You data is much more important than you battery even your laptop, so think about the impact of sudden interception of electricity on your laptop and data.

How to prolong the working time of laptop batteries?

Obviously, to keep a battery in long period, you should place it in low and dry environment and set the rest electricity of battery in the condition of 40%. HP HSTNN-Q78C-4 The battery should be taken out for at least two months to ensure the good condition of the battery and prevent the damage on battery from huge loss of electricity.

How to prolong the usage of laptop batteries as long as possible?

1.Dim the laptop screen. LCD screen consumes electricity a lot. If possible, lightening the screen darkness can prolong the working time of the battery. HP HSTNN-Q81C

2.Turn on Speed Step and Power Play and other functions. Laptop processors and video chip can decrease working frequency and voltage to prolong the working time.

3.Use the hard disk and relevant software to reduce the speed. For example, NERO DriveSpeed , PowerBooster and other software can reduce the speed of CD-ROM and hard disk as well as deplete the consumption of laptops.

4. Take advantage of standby of machines, dormancy and other functions. When you are to leave the laptop for long time or dormant, you can let it standby or go to sleep to save the electricity and prolong the longevity of your laptop. HP HSTNN-UB1A

More Than What You Think Of A Laptop Battery

How laptop batteries interrelate with the computer to function properly absolutely is a lengthy process as well as manufacturing alone a laptop battery is even worst long indeed. Laptop companies are also working continuously to improve and develop such functions of laptop battery technology. HP HSTNN-W79C-5

The procedures used to bring in about laptop batteries involves a system of tests and re-tests to guarantee safety and consistency. There are an amount of components besides the battery that makes it work. There are safety fuses, breakers, thermistor, and charge electronics which all aids and gives support in the functionality of laptop batteries which you can magnificently seen inside the casing. HP F3172-60901 The battery pack casing is welded together in a detailed method and is then sent on for final check up. Different tests are documented for form, fit and function during final inspection. Once the battery passes the test, it is now labeled with a lot and date code.

The thermistor controls the resistance of the battery and informs the computer to stop charging when the battery heats up as it completes charging. Moreover, the circuit breaker facilitates and helps protect against danger and hazards caused by over charging and short circuits. HP F3172-60902

Laptop batteries are built with the finest quality battery components that can be found for suitability. Battery cells are ensured to yield the highest capacity and safety qualifications, whether the battery cell is NiHM, or Li-Ion. HP F3172A Some batteries are even equipped with their own microprocessor that communicates important charge information to the computer. Sequential knowledge about laptop batteries certainly helps you a lot for a more effective, efficient, and comfortable usage of your laptop. Now you won't just see simple and non-refundable box-shaped thing when choosing a laptop battery, but rather a "tiny-tony" that helps your laptop to run reliably and effectively. Asus S6F battery

Absolutely laptop batteries are the most complicated and regulated of all rechargeable batteries, but one thing's for sure, they are the most important battery in the field of rechargeable batteries!

How to Save Your Laptop Battery Life Asus S6 battery

I know how the life of your ibm thinkpad t23 laptop battery can be an important factor when considering a new laptop. Unfortunately, after a year of using the laptop regularly you will begin to notice the battery slowly having less and less life. This is inevitable and eventually you will have to replace the battery, but this can get expensive. So here are a few things you can do to try and save battery life on your laptop. Asus S6Fm battery

Use your battery. If you're like me and leave your laptop on the charger all the time while in use, your basically not allowing your ibm thinkad t43 battery to exercise its functions, allowing it to become lazy. After a while you may start to realize, when you need to actually use your battery, that it seems to have less and less life. Asus U6E battery Even if you have an outlet available, I recommend, once every few weeks, unplugging your laptop and allowing it to drain before plugging it back in.

Charging your laptop. This seems obvious, but you want to leave your laptop on its charger until you are leaving with it. If you take your laptop off it charger a few hours before you leave, it may not have a completely full charge, leaving you with less battery life. Asus U6Ep battery You can test this by charging your laptop completely before going to bed, take it off the charger and the next morning see if you have less battery life.

Adjust the power options. On PC's you can change the power settings to save some of your battery life. There are 3 options: High Performance, Power Saver and Balance. You can access these settings my going to your start menu and clicking on control panel. Here, you will click the Power Options icon; here you will be able to change these settings.Asus N20 battery

Your screen. The screen display takes up more than 40% of your batteries lifespan, so dim your laptops screen to a reasonable and still viewable setting, you might be surprised how much more battery life you gain. This is an easy setting to change. Asus N20A battery On your keyboard there are secondary keys that appear blue, you will want to find the keys that show a sun with an up and down arrow. Hold down the blue Fn key and tap the sun down key to dim your screen.

Remove any unused devices, such as CD/DVD or USB drives. Asus U6S battery Even if you are not using these, your laptop is taking power just knowing they are there, so by removing them, it no longer has to waste useful power.

WiFi. Your laptop is constantly sending out signals to connect or to try and connect to an Internet source. If you are not using the Internet, disable your connection until you need it, doing this can possibly save up to 30 minutes of ibm 40Y6799 battery life. Asus U6Sg battery You can test this with your laptop by turning off your WiFi settings with your laptop off the charger, check to see if your battery life changes. I did this and my time jumped from a remainder of 2 hours and 12 minutes to 2 hours and 38 minutes, gaining almost 30 minutes of battery life.

Go to sleep. If you are not using your laptop but need a quick startup let it go into sleep mode. The battery will still be used but it will save so much more then if you just let it run, but don't start it up again until you are ready to use it. Asus U6Vcm battery

5 Tips to Extend Your Laptop Battery's Life

There's been a lot of talk recently about toshiba satellite a60 battery life — we told you, for example, about how some folks thought Windows 7 was misreporting laptop battery levels, but in reality it appears that the OS is simply accurately indicating battery wear, so you can be better informed about when to replace the battery. Asus U6V battery

Your laptop battery, you see, starts losing capacity as soon as you drive it off the lot, and after a year or two you might need to get a new battery just to get an hour or two away from an outlet.

So what steps can you take to make the battery last as long as possible? Asus U6C battery Mind you, I'm not talking about optimizing the runtime on a single charge. I am talking about getting as much mileage as possible from a battery before you have to replace it just to get a reasonable runtime out of each charge. Here are a few ways you can get the most out of your laptop battery:

1. Keep your laptop battery cool. Batteries degrade more quickly when they're hot. Asus M6 battery That means you should keep vents clear — don't put your laptop on a fluffy pillow or a cushioned surface that will cover vents and trap heat.

2. Don't pack your laptop away in a backpack or other enclosed space when the battery is still warm, trapping the heat. A battery that's frequently hot to the touch will lose life a lot faster than a battery that isn't constantly being stressed. Asus M6000 battery Worst of all: If your laptop crashes or refuses to shut off properly, the battery can get extremely hot when packed away in your bag. Check it to make sure it hasn't gotten dangerously hot while stowed away over the weekend.

3. Don't charge your laptop constantly. Asus M6000A battery If you only occasionally take your laptop away from a power outlet, but leave it plugged in to charge 24/7, you're leaving your laptop in a state of perpetual charge at the 100% point — and that is bad for the battery's long-time health.

4. If you tend to use your laptop mainly at your desk, exercise your laptop battery by running it down and recharging it once or (even better) twice a month. Asus M6000C battery

5. Alternately, you might want to physically remove the laptop battery if you're using the laptop at your desk for long stretches of time. If you do remove it, don't store it in a fully charged or depleted state. It's best to store it in the middle — between 40 and 50 percent of full charge.

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Laptop Batteries Tips and Advice

Everyone remembers when desktop pcs primary grew to become a home item and nearly everybody was astonished in the totally different issues which they could do ideal from home. Acer Aspire 4736Z battery This was all so exhilarating. Then Toshiba gave us the laptop computer which was the subsequent evolution in computing. This meant that businessmen and women, students, teachers, vacationers as nicely as other casual travelers could consider their function with them without necessarily becoming limited.

Laptops revolutionized the way in which people work. ASUS U50A battery Millions have flocked to electronics shops equally offline and on-line to purchase a personal laptop computer owing for the ease of workflow and e the convenience that it offers. There are handful of elements to look for when selecting a laptop computer because there are now various brands. the extremely best manufacturers are usually Dells, Toshibas, HP, Acer and Sony. ASUS U50 battery There are away training course others including Lenovo which are coming up fast. one other point may be the storage capacity. this can be crucial for those who are a single to carry out various chores for the laptop. Another awesome element to look at may be the laptop battery. allow us examine a few of factors to complete with laptop computer batteries. Fujitsu FPCBP234 battery

When selecting a laptop computer battery, the extremely best method to know which can be the extremely best is merely to verify the energy capacity and how prolonged the energy lasts right after it has bee completely charged. ASUS Eee PC T91 battery This guarantees that you just may have highest unlimited capacity to function with at least interruptions. Most fine batteries will provide you with in between 2-4 several hours of continuous energy though all this is dependent for the specific chores becoming performed. The far more the chores the far more the energy requirements is going to be and hence the much less the battery time. selecting by manufacturer can also be important. HP 576833-001 battery It is usually suggested that you just go using the same organization that produced your laptop computer to stay obvious of compatibility problems.

It is extremely simple to recharge a laptop computer battery. when the energy gets drained, you can merely re-plug the laptop computer to some wall electric outlet making use of the laptop computer ac adapter cord that arrived using the laptop computer and also the electric latest quickly starts to recharge the battery. HP COMPAQ Notebook 6720t battery It could possibly consider as prolonged since it took for that battery to turn out to be drained for it to turn out to be completely charged. It is suggested nevertheless that for those who are traveling to some spot that could possibly not have electric outlets, you could require to purchase an additional battery just for safety.

Fujitsu FPCBP48 CP052605-01 battery So where can a single purchase a laptop computer battery(such as hp dv6000 battery)? many people merely go back again to where they purchased their laptop. normally these digital shops do not store the batteries and will refer you back again for the specific laptop computer manufacturer which indicates you could possibly require to dispatch the old a single back again after which wait around for them to dispatch the brand new a single based on regardless of whether you possess the guarantee nonetheless in effect. SAMSUNG N150 Plus battery

The most beneficial spot to purchase a laptop computer battery hassle-free is online. this can be both from EBay or from third celebration battery websites. There are exceptional web-sites around which market laptop computer components at very affordable prices plus they will also dispatch the battery straight for your address. Lenovo IdeaPad G560G battery

How to Buy a Dell Laptop Battery

Finding a Dell inspiron 1520 laptop battery may seem like an overwhelming task, especially if you have an older laptop model. You can easily find the Dell laptop battery you need, and get indispensable safety information as well.

Search the Dell website. Fill out the search box on the website.Lenovo IdeaPad G560L battery If you know the battery name and type that you need, enter that information in the search box. Navigate the search results and add your selection to the shopping cart. If you do not know the exact battery you need for your laptop model, then locate your laptop on the website and add this to your shopping cart, even though you do not want to buy the entire laptop. LENOVO G570 battery This will start the customized building of your laptop system, so you can navigate the battery options available for your model. Decide which battery you want to buy. Perform another search in the search box for the battery you want. Select this item from the results page and add this to your shopping cart. Proceed to checkout.

Check with third party sellers before purchasing your battery. LENOVO G570A battery Computer stores sell various new and refurbished computer parts at deep discounts. Check online and retail stores that sell Dell products. Do not buy a Dell laptop compatible battery. Although battery manufacturers may suggest the laptop battery is Dell compatible, it may harm your laptop. Be sure that the third party seller offers only Dell laptop batteries. LENOVO G570E battery

Confirm the appropriate battery you need with a Dell customer service representative. Many third party sellers offer Dell laptop compatible batteries, but the sellers may unknowingly sell recalled laptop batteries. A recent recall on a Dell laptop battery was necessary when several laptops burst into flames. If you buy through a third party, confirm with Dell GB761 battery has not been issued a recall. LENOVO G570AH battery

Longer Dell Laptop Battery Life

When you purchase a new laptop, it comes with a battery for you. These have varying life spans, but most hover around the same amount of available power. You have the option of buying a separate battery if you want to have more laptop battery life, or you can do a few things to conserve what you have. LENOVO G570G battery Running out of battery life is a problem when you are on the road and have important things to do, so make sure you are familiar with your laptop, how it charges the battery, and what you can do to make the most of the battery life with which you have to work.

Many laptop batteries have about two hours of useful Dell laptop battery life in them. LENOVO IdeaPad G570 battery They are getting better, so you may get more time out of yours if you have a new one, or if you have gotten your computer or new battery in the last few months. Two hours is not a lot, but it is enough to get some things done when you can not find any power source to plug into. Thus, it could possibly be thought-about to be in the Realtor Toronto finest interest to advise his shopper to buy the property at the next price. LENOVO IdeaPad G570A battery One of the first things you can do to prolong your laptop battery life is to turn down the brightness on your monitor. This is something you can usually find under power settings on your computer. There may be different settings for when using a battery, so go there and see what you can change.

Another thing you can do to prolong your Dell laptop battery life is to be careful with the programs you use when you are using your battery power. LENOVO IdeaPad G570E battery Different applications and programs on your computer are going to use various amounts of power. You may want to shut off some things that run in the background to save power, and you may want to avoid viewing pictures and video, as they can use up a lot of memory and a lot of power all at the same time. Your word processor may be an essential, but it may suck up power. Keep this in mind as you may have less time to type than you thought. LENOVO IdeaPad G570AH battery

If you have some time, use your Dell laptop battery power while you are at home to see how long you can use certain applications. If you love to listen to music while you work, see if there is a difference when playing or not playing it while working on something else. LENOVO IdeaPad G570G battery You may save a few minutes by turning it off, but that is not much of a difference. On some programs, it may suck up more power than you thought. This is something that is good to know when away, so you can turn off the music when you must get every minute out of your laptop battery life that you can.

Lastly, know that use over time can diminish your Dell laptop battery life. The respective Toronto realtor might include their brokerages on the contract as the brokers for every principal. LENOVO B470 battery When you drain and refill any battery time and time again, you eventually lose some of that battery. One that once lasted two and a half hours may be down to just one and a half hours after time has gone by. Also make sure your battery is fully charged before you leave. At times, you may be unplugged without realizing it, and then when you go out, you only have half of a battery left. If that happens, it won't matter how new or good your battery is, you won't have a lot with which to work. LENOVO B470A battery

How to Charge a Laptop Battery Outside the Computer

HP Laptop battery have become smaller and more powerful, but they still don't supply enough power for long projects–particularly if you are doing processor-intensive work. LENOVO B470G battery Whether you are traveling on a long plane trip or are just paranoid about power outages, it is always good to know you will be able to finish what you are working on. Charging an extra laptop battery to take with you ahead of time will let you work twice as long without a power supply.

Consider buying an external laptop battery and charger. LENOVO IdeaPad B470 battery External laptop batteries can be plugged directly into the power supply, which means you don't have to open up the laptop and remove the old battery to use them.

Get an external battery charger designed for your particular laptop model; you can order one from a website like the one in Resources. Different batteries have different voltage and amperage requirements, and some require pulse chargers or other methods. LENOVO IdeaPad B470A battery If you can't find a charger designed for your laptop, you can use one with the same voltage and output as your battery.

Remove the laptop battery if you are planning to externally charge the battery inside your computer. Usually, you will have to pull open a latch or two on the bottom of your laptop. In rare cases, you may have to undo a few screws. LENOVO IdeaPad B470G battery

Plug in the battery for the specified period. Most laptop batteries require about 2 hours to charge completely, but the time can vary somewhat between battery models.

Keep an eye on the battery the first time you use it. If it becomes extremely hot, unplug the charger. LENOVO IdeaPad Z370 battery Do not leave the battery plugged in for longer than it takes to charge, unless the instructions that come with the battery charger specify that this is OK to do. Many laptop battery chargers have intelligent circuitry that senses when the charge is complete, but not all do. If your charger does not, overcharging can cause the battery to overheat.

Battery conditioning and laptop recycling laptop batteries LENOVO IdeaPad Z370A battery

New laptop battery tips: This document explains how we recommend you should fully condition your new laptop battery, using a simple battery charge. This will ensure a long battery life and greater durability. It is very common for customers to believe that there is a failure of the battery when in reality they have a battery in perfect condition, which simply requires proper conditioning. LENOVO IdeaPad Z370G battery

When you receive your battery new laptop, it will be fully paid and unconditional. Please do not turn on your computer when the laptop battery does not work right away. Your Apple macbook pro 17 inch battery will normally 8 to 10 cells and releases from reaching its full capacity. However, your battery will not reach their full potential until it has been conditioned for at least fifty times. Until then, you may experience lower performance. ASUS W90V battery

Another common situation you may encounter is the LED indicator on your computer laptop does not give specific information that the Dell Inspiron 1501 Battery is fully air conditioned – it is very common for consumers to believe that their battery is defective. Please do not blame the battery! Just follow the instructions below cycle. ASUS W90VN battery

During the first charge, your computer may indicate that the mobile charge is complete after a short period (about 15 minutes). It must be expected and considered normal if this happens, remove the battery from your computer laptop and repeat the charging procedure. ASUS W90VP battery You must use your computer laptop as usual (without AC adapter plugged in), until the Dell Vostro 1500 battery is completely down.

Repeat the above procedure for a minimum of eight times in the coming days. Always make sure you allow time for your battery is sufficient to obtain a full charge overnight.

What do these terms mean ?

Cycle – One full load during the night and a full discharge and without the adapter plugged in. ASUS W90vp-a1 battery

Charge – Night of charge with an AC adapter plugged into the mains.

Discharge – have exhausted the power of your Dell latitude d830 battery (operating thecomputer with your battery is fully charged in thecomputer laptop and AC adapter unplugged).

Condition – This is the process of charge / discharge you must complete. This will increase both the performance and life of your battery. ASUS W90vp-a2 battery

Duration – The time the ThinkPad t61 battery will last.

About 577 million household primary batteries (non rechargeable) batteries have been sold in the United Kingdom in 1998. They are used in a wide range of everyday devices like flashlights, radios and electric toys. Nickel Cadmium (NiCd) batteries are also common in households, in equipment such as power tools, camcorders, computers phones and mobile phones (there is a separate fact sheet on mobile phones). ASUS W90vp-x1 battery A dry battery requires fifty times more energy than it overlooks.

There have always been difficulties with recycling technology for general (non-rechargeable), as efficient separation and collection of many different types of batteries is difficult. The area of Compaq presario cq50 battery UK has now eliminated mercury from their own products, although a small number of batteries containing mercury are still imported from abroad.ASUS W90vp-x2 battery Check with the battery manufacturer to see if they are operating a system of recycling or recovery. This is particularly needed for battery NiCd s because they are the most dangerous type of battery in the house.

Why laptop battery can not charge and out of work

Generally, we said our laptop battery dead means that : the battery out of charge or discharge. ASUS SW7 battery The laptop battery can not work after used for some months most caused by the problem. Also sometimes the battery suddenly can not be recognized by laptop. This is the adapter or mohterboard problem (espacially in dell laptop battery).

To second problem we only can change the adapter or motherboard.

Why Laptop battery can not discharge
(1.)The laptop battery after the storage using and the life decay;

(2.) Lacking charge or not be charged; ASUS W7F battery

(3.) Ambient temperature is too low;

(4.) Discharge efficient less, such as the large current discharge cause voltage sharp drop to 0, then electricity can not be released

(5.) The laptop battery has been in over-discharge protection.

The Solution for Laptop battery can not dischage ASUS W7J battery

(1.) The Apple A1185 Battery during storage should take a monthly charge and discharge;

(2.)Charging the battery at 10% state;

(3.)Using in a normal environment;

(4.)Using proper adapter of the machine.

(5.)To place it in icebox for about 10 hours and cool place 2-4 days to unlock the protection

Why laptop battery out of charge

(1.)The battery in zero voltage; ASUS W7S battery

(2.)Charging failure, no output current;

(3.)External factors have led to the charging efficiency is too low

(such as low or high temperature).

The solution for laptop battery can not charge

(1.)Check your charger output voltage and current;

(2.)Check the laptop battery charger output connection is good or not ASUS W7SG battery

(3.)Charge the battery with 1.5 times the maximum voltage of the battery, 1.5C high current charging, active the battery . (Only when the battery can not charge, use this method).

10 Tips To Preserve Your Laptop Battery

One of the biggest issues with laptop computers is ibm thinkpad R51 battery life. Asus M9 battery Ever have your laptop go dead, at the worst possible moment? You are not alone. This is a common occurrence with laptop batteries, and of course, they fail us at the worst times. Also, there is the cost of battery replacement, which can run high. But, all hope is not lost and there are some concrete steps that will prolong the life of laptop batteries and make sure that it's ready to go when you need. Asus M9A battery

Use the A/C adapter via wall plug whenever possible. This many seem very obvious, however many times laptop users become so used to mobile computing, that even when at home they do not take advantage of a close by plug.
Battery Charging: It is better to charge your sony vgp-bps9a/s battery 100% and then use up all that juice and recharge it again.
Program Overload: Run only the programs you are using at the time of use. Programs that run in the background use more system resources and drain laptop battery life. Asus M9F battery
Laptop Temperature: Make sure to read your laptops temperature ranges and not let it go beyond what is recommended. When your laptop is hot then turn it off and let it cool down. You can also use cooling devices, like laptop cooling trays and pads that will make sure your laptop is cool and not sucking extra battery juice. Asus M9J battery
Disable unnecessary programs from start up: Many programs that we do not even use, start automatically on computer boot, such as Microsoft Office Suites. Even anti virus can be disabled if you are not logging onto the Internet during that work session and do not have an open Internet connection.
Plan ahead: If you are going to be mobile and need to use your laptop for email checking, word processing and other work tasks then make sure you have a full battery and do not drain it by hanging out online, or watching a DVD. Those activities will deplete your battery and leave you stranded when you really need your laptop. Asus M9V battery
Work with peripherals when you can use a wall plug: Tasks such as uploading music to iPods or any devices that require the use of a USB for example that use a lot of power. So it is best to perform these tasks, when you can draw power from the AC adapter instead of using laptop battery juice.
Adjust screen brightness: Adjust the screen brightness as low as your eyes can take and you will see a big improvement in toshiba pa3356u-1bas battery life.
De-fragment your hard disk: Your laptop will use less resources when pulling up files and therefore use less power. Asus W7 battery
Power Saving Features: Stand by mode uses power. If your laptop has the hibernate feature, then use it. If not, turn it off whenever possible or feasible. Taking steps such as those above will secure more battery life and a better mobile computing experience.

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Acer Notebook Battery

The number of laptop computers that are being sold all over the world in increasing rapidly because of the great advantages that they offer. HP COMPAQ Notebook 8710p battery With the help of these small computers, people can do to their work even when they are traveling. They are small, lightweight and powerful so it is the perfect companion for numerous people. When buying such a device, we must know the things we will do with it. Knowing its purpose is a must in order to buy the device that is perfect for you. HP COMPAQ Notebook 6720t battery In stores, buyers have the possibility to choose one of the many laptop computers. There we can find a large number of devices that have different characteristics and that are made by numerous manufacturers. Acer is a laptop computer manufacturer that is extremely popular because of its high quality products. Acer manages to satisfy the needs of numerous people with its devices and that's why, their laptops are one of the most bought in the world. HP COMPAQ Notebook 7400 battery

Their devices can be purchased from many stores that can be found in every city and they can also be purchased from the Internet too.

The Internet is the best place where people can find all the things that they want and it is also a place where people can buy different products like mobile phones and laptop computers. HP COMPAQ Notebook 8200 battery Nowadays, laptops are becoming more and more popular among many people and the number of the devices that are being bought every day is increasing. When buying such a device, people pay attention at many important things like built quality, specifications and battery such as Acer Aspire 1680 Battery, Acer Aspire 2200 battery and Acer BATBL50L6 battery. The battery is very important because many laptops have different types of batteries and buying one that has a low battery life isn't recommended. HP COMPAQ Notebook 8400 battery

The Acer notebook battery is a good quality and long lasting one. Most of the batteries from Acer notebooks are 6-cell ones. Having a 6-cell battery means that the battery life is high. Most of Acer notebooks have a life battery of 3 or 4 hours but we can find some that can even last 5 hours without recharging depending on the device. HP COMPAQ Notebook 8500 battery As I said above, the Acer notebook battery is a good and reliable one that many people choose because of its high life time.

Besides the battery, when buying a laptop computer, people pay attention at its specifications and features. The specifications are very important because it must be powerful in order to work in different applications that demand a high memory. HP COMPAQ Notebook 8510w Mobile Workstation battery Having a fast and long lasting laptop computer is a must for many people throw out the world because only with its help you are able to do your work in a fast and efficient way.

All in all, besides the Acer notebook battery, people look at the laptops specifications, features and built quality because these are extremely important for them and buying the device that is has the desired characteristics is a must in order to do your work fast and efficient not mattering where you are. HP COMPAQ Notebook 8700 battery

How to store and maintain Laptop Battery

Nowadays, more and more people use the laptop, and how to store and maintain the Laptop Battery is concemed by most laptop users, today we will talk about the ways that store and maintain .

1. You need not use up the power before charge the it. Now, all the laptop batteries are all lithium, to lithium batteries, use up the power before charge is useless, or even harm. Because lithium batteries have no the so called "memory effect", only the early Nickel has. HP COMPAQ NoteBook 8710w battery In generally speaking, laptop battery's life is effected by the human damage and its nature life, its life is stationary, 300 – 600 charge and discharge times, can use about two years.

2. When plug in the external power, you can remove or do not remove the batteryRemove the battery or not depends on the actual usage, when plug in the external power, you do not remove the battery has no harm to it, HP COMPAQ Notebook 8710w Mobile Workstation battery Because the battery will not accept any power when is is fully charged, power will be directly turned to the notebook's power supply system, but when the laptop is high-speed operation, the internal overheating, it is best to remove the battery, otherwise it is harmful.

3. How to properly charge the laptop batteryYou should be avoid using up the power before charging it, because this will give the battery a lot of pressure and resulting in damage. A more feasible approach is to charge it when the battery remain about 20-30% of power. HP COMPAQ Notebook 9400 battery In fact, the notebook lithium battery in the number of "use up / charge" times is limited, all used up and then charge will greatly shorten the battery life. At the same time, the battery should be charged in a dry place, and you should also pay attention to the heart problem.

4. How to store your long time no use laptop batteryUse up the battery power or full charged the battery ? Store the battery with full discharged will make the batteries lose activity, even lead to the control circuit protection self-locking and no longer available. HP COMPAQ Notebook nc8200 battery Store it with full charged will bring the safety risks, the best preservation method is store it in a cool and dry place with about 40% power, about 20 temperature is the best store temperature, of course you had better use the battery once a month, this can guarantee the battery a good state of preservation, and will not let the power completely loss and damage to the battery. HP COMPAQ Notebook nc8230 battery

Achieve Maximum Laptop Battery Performance on the Road
Achieve Maximum Laptop Battery Performance on the RoadLaptop Chargers are crucial when working on the road. To get maximum performance from your laptop battery, fully optimize the laptop's power management features prior to use. However, there is a trade off when setting your laptop power management. You will achieve better power conservation in exchange for lesser computing performance. HP COMPAQ Notebook nc8430 battery v The power management system conserves the laptop battery power by setting the processor to run at a slower speed,Toshiba Satellite 2100 Battery dimming the laptop screen, slowing down the hard drive when it's not in use and causing the machine to go into sleep or suspend mode when it is inactive. Your laptop user's guide will provide information relating to specific power management features. HP COMPAQ Notebook nw8200 battery

Increase your Laptop Battery LifeDid you know that detaching your main laptop battery from your laptop would increase your laptop's battery life up to 75%? Our experience and testing have shown that even when you are plugged in with your laptop ac adapter and your battery is fully charged, the laptop will still use the laptop battery resources in small increments. This will put unnecessary charge cycles to your battery. HP COMPAQ Notebook nw8240 battery Since typical li-ion laptop Chargers have 375 charge cycles, having a fully charged battery inserted will put unnecessary charge cycles. The downside to Toshiba Satellite A65 Series Battery removing your laptop battery maybe a loss of power when the ac adapter is accidentally unplugged or when there is a power outage.

Laptop Chargers: OEM vs. 3rd PartyThird party laptop Chargers supplied by AtBatt.com are usually lower in price and usually exceed the specifications of OEM Laptop Chargers. Many of AtBatt's laptop Chargers use the exact same battery cells as OEM Chargers.HP COMPAQ Notebook nw8240 Mobile Workstation battery In addition, AtBatt offers a superior warranty over OEM manufacturer's warranty. Finally, we make warranty replacement on our 3rd party laptop battery easier by dealing with you, the consumer, directly."

Are there restrictions when taking lithium-ion batteries on planes?Effective January 1, 2008, the Department of Transportation (DOT) will no longer allow loose lithium batteries in checked baggage. These batteries may continue to be packed in carry-on baggage. HP COMPAQ Notebook nw8440 battery

Universal Notebook Battery

Universal Notebook Battery is available in two models: the 65Wh ($ 149.99 direct), which supplies up to 6 hours of power, and the 80Wh ($ 199.99 direct), which maxes out at eight. A bit safer than their Lithium-ion ancestors, these Lithium-polymer batteries weigh in at two pounds and feature extras like multiple output voltages and LEDs that show you how much juice you've got left. HP COMPAQ Notebook nw8440 Mobile Workstation battery Like Battery-Biz, APC also offers its own online tool to help users determine which battery pack will meet their needs.
battery company Director of its consumer network division, Ron Catanzaro, couldn't guarantee that its battery packs wouldn't contain Sony cells. But so-called "Japanese" cells (made by Japanese companies like Sanyo, Sony, and others) have typically been considered the most reliable, which is why companies like Dell and APC do their shopping there.
battery company also sells nickel-metal-hydride (NiMH) batteries such as HP COMPAQ Notebook nw9440 battery , dell Inspiron 8500 battery, dell 8N544 battery, dell Inspiron 8600 battery, Dell Precision M60 battery, dell Inspiron 6400 battery, dell Inspiron E1505 battery and dell Inspiron 1501 battery, which are typically designed for older laptops, and not the Dell models that were affected.
Valence Technology N-Charge Power System I
This universal, portable power source ($ 199 or $ 299 direct) is compatible with just about any laptop on the marketincluding almost all of the Dell models affected by the recalland offers up to 10 hours of plug-free power. HP COMPAQ Notebook nw9440 Mobile Workstation battery And unlike Lithium-ion-based power sources, the N-Charge isn't pyrotechnic prone, thanks to Valence's Saphion technology, which relies on a stable, phosphate-based cathode material that won't burn.
M-Fuel's Notebook Power Bank
M-Fuel's claim to fame is a tiny chip the company designed that resides within its lithium-ion cellspurchased from Panasonic, not Sony. The chip identifies the power being drawn by the device being chargedwhether it be a cellular phone, PDA, or laptopand controls the voltage and other charging parameters accordingly. HP COMPAQ Notebook nx7300 battery
M-Fuel's site includes a direct link to online retailer BuyShipDirect, where customers can buy the Notebook Power Bank for $ 299.99 direct. The external battery pack provides up to ten additional hours of additional battery life. Not only does the battery pack include a set of universal plug connectors for charging the unit, but the box includes a set of power "tips", providing the right connection for your laptop. HP COMPAQ Notebook nx7400 battery
One question that occurred to us was whether these external batteries would be confiscated in the constantly evolving world of terrorism and anti-terrorist measures. The good news is that, to date, company executives report that they haven't had any problems. The bad news is that there's no guarantee that that will remain the case. As of press time, laptops and portable electronic devices are allowed by both the American and British transportation departments, and we assume that means laptop batteries are as well. HP COMPAQ Notebook nx8200 battery
"I've been flying around the country, domestically and even internationally, with a suitcase full of these things," said Sasha Barausky, a product manager with M-Fuel. "Some are sales samples, some are for retailers, some are out of the package, in the packageI've never ever been stopped. There's been no issue with planes."

Hp Compaq Nc6400 Notebook Battery Pack Maintenance Techniques To Laptop Clients HP COMPAQ Notebook nx8220 battery

If buyers are purchasing Li-ion rechargeable battery the sellers will say to them how many hours that Notebook Battery pack may end, there are more causes that are promote to the damage of the Li-ion rechargeable battery. Most notebook users don't have thought of the technical stuff merged on obtaining utmost life out of their {a target="_new" rel="nofollow" . Like all other Notebook Battery packs; you need to provide great care when those are not use. HP COMPAQ Notebook nx8420 battery Don't store yours Notebook power pack near chemicals or in the blunt area that will shorten your Notebook battery ability.

One more simple technique to increasing the Li-ion notebook battery lifespan by defragmenting disc and take out surplus files. By using this simple process will enable yours notebook to Boot up more faster, this will consumes lower power. HP COMPAQ Notebook nx9420 battery Modify your notebook power settings with that it use the least quantity of power necessary to get your laptop functioning. Too much brighter display consume more battery. change brightness when ever running the laptop on the battery.

Shut total needless programs when yours laptop based over HP Compaq NC6400 Li-ion rechargeable battery as primary power resource. HP Compaq Business Notebook 6510b battery Don't allow virus scan when your notebook relaying on Li-ion rechargeable battery, since the scan especially enhance processor & hard disk utilization while it is working on Notebook power pack. Try to keep away from connect by the internet unless it is really needed, if we are depending on yours HP Compaq NC6400 Notebook power pack as the main power resource. Run virus scan if you are connected to main power resource. HP Compaq Business Notebook 6515b battery Do not perform antivirus scan when you are working on Li-ion battery. It will reserve power.

When ever it's feasible try to lessen the usage of usb devices such as optical DVD/CD drivers or players, lead to consume the extra energy to control. Detach these devices and USB tools have the highest Priority to drain the battery power. HP Compaq Business Notebook 6710b battery Detach entire extra devices suchlike an external mouse, Fire wire, PC Cards, Wi-Fi box, Outer speakers, pen drives bluetooth and even the attached iPod.

Hibernate & Standby techniques are used in favor of saving the power of the notebook Battery although, commonly notebooks takes a lot of Battery Power when in STAND BY method. We don't know the reasons but "instant-on" obtain around 60 second's extra time to go off of Hibernation method. HP Compaq Business Notebook 6710s battery This least amount of time represents a considerable impact on the complete laptop battery lifetime. In the hibernate method sign in & sign out are really convenient & efficacious than a usual start & shutdown activity. While in hibernate mode the system shutdown operation provides a possibility to hold current process right away with the power-off and when in start up operation this will continue with in a few seconds absolutely, HP Compaq Business Notebook 6715b battery Thus hibernate mode saves power. But suspend method diminish the power use of yours computer through cutting the power to hardware components those we are not utilizing. Hence by applying Hibernate mode we can preserve the TOSHIBA Satellite A200 Series Battery pack power. You may create a shortcut icon for hibernate in its place of the lengthy activity (for first time carrying out this work in control panel afterward use the created shortcut icon by Press "Win button" pursue by U pursue by H).HP Compaq Business Notebook 6715s battery If we have some particular urgent work at outer for long time, in that state use the hibernate method as an alternative to suspend form.

Any Laptop customer desire to make a HP Compaq NC6400 Li-ion rechargeable battery ending as long as possible. Nevertheless any Li-ion notebook battery has the Specific life time. Thus in case you can go through the above listed beneficent notebook battery tips that may work to increase the Li-ion rechargeable battery existence. HP Compaq Business Notebook 6910p battery

Laptop Battery Troubleshooting

FAQ 1: Without the external power, Install the battery for many times, but fail to turn on the laptop.

Possible Reasons:
1. Incorrect battery installation
2. The battery is not used for a long time.
3. Deep discharge protection
4. other reasons

Solution:
1. Check out carefully whether the interface connection between the laptop and battery is correct.

2. Put on the battery and charge it using the AC Adapter for a moment to active the battery. HP Compaq Business Notebook nc6100 battery In the status of off, turn on the laptop again without connecting the AC Adapter.
3. Get a laptop battery replacement.

4. Contact the after-sale service or local dealers.

FAQ 2: The laptop battery is not used for a period of time, it leaves less or even no electric quantity when to use it again.

Possible Reasons:
1.

Leave the battery with little power less than 50% at the previous time to use it.
2. Natural loss caused by the battery quality or storage environment HP Compaq Business Notebook nc6105 battery
3. Natural damping caused by long time idle or lack of regular charge-discharge

Solution:
1. Just charge the battery to 100% and then the battery runs normally.
2. It is a normal phenomenon, and the battery can be normally used after charging.
3. Get a laptop battery replacement.

FAQ 3: The laptop shows that the battery has been charged completely (100%). But after switching off the AC power, the battery can not work and the system is freeze.

Possible Reasons:
1. The excess temperature in the operation environment results in the over-temperature protection in the laptop battery.

2. The battery has some problems in charging, which leads to false electric quantity status showed. HP Compaq Business Notebook nc6110 battery

Solution:
1. It'll be all right just to turn off the laptop and remove the battery to cool it down, and then use the battery in normal indoor environment, because the battery over-temperature protection can get recovery automatically.

2. In the same conditions, using the original battery to check whether this issue still exists. If there is no problem with the original battery, contact the after-sale service or local dealers to handle it.

FAQ 4: With the battery, the laptop runs well and the battery can charge as well as discharge, but there are only a part of the battery information on the laptop instead of full details. HP Compaq Business Notebook nc6115 battery

Possible Reasons:
1. Bad contact in the interface between laptop and battery, or the swap data interface can not work.

Solution: Change to the original battery. If the same problem occurs, maybe some contacts in the interface is broken which need to repair. If not, the output interface is damaged. Please contact the after-sale service or local dealers to change the battery.

FAQ 5: The battery indicator light keep on blinking and the laptop prompts that the battery is not compatible. HP Compaq Business Notebook nc6120 battery

Possible Reasons: 1.This is the compatible issue between the laptop and battery.

Solution: Please contact the after-sale service and local dealers.

FAQ 6: With the AC Adapter connects to the external power, the laptop turns off once the battery is put on.

Possible Reasons: 1.The battery is at fault, maybe it is caused by the short circuit in the battery interface part.

Solution: Remove the battery at once, and never try to put on the battery again. Contact the local dealers to change the battery.

Without the external power, Install the battery for many times, but fail to turn on the laptop; HP Compaq Business Notebook nc6140 battery The laptop battery is not used for a period of time, it leaves less or even no electric quantity when to use it again; The laptop shows that the battery has been charged completely (100%). But after switching off the AC power, the battery can not work and the system is freeze; With the battery, the laptop runs well and the battery can charge as well as discharge, but there are only a part of the battery information on the laptop instead of full details; HP Compaq Business Notebook nc6200 battery The battery indicator light keep on blinking and the laptop prompts that the battery is not compatible; With the AC Adapter connects to the external power, the laptop turns off once the battery is put on.

Universal Notebook Battery

Universal Notebook Battery is available in two models: the 65Wh ($ 149.99 direct), which supplies up to 6 hours of power, and the 80Wh ($ 199.99 direct), which maxes out at eight. A bit safer than their Lithium-ion ancestors, these Lithium-polymer batteries weigh in at two pounds and feature extras like multiple output voltages and LEDs that show you how much juice you've got left. Like Battery-Biz, APC also offers its own online tool to help users determine which battery pack will meet their needs. HP Compaq Business Notebook nc6220 battery

battery company Director of its consumer network division, Ron Catanzaro, couldn't guarantee that its battery packs wouldn't contain Sony cells. But so-called "Japanese" cells (made by Japanese companies like Sanyo, Sony, and others) have typically been considered the most reliable, which is why companies like Dell and APC do their shopping there.

battery company also sells nickel-metal-hydride (NiMH) batteries such as dell Latitude D800 battery, dell 8N544 battery and dell Inspiron E1505 battery , which are typically designed for older laptops, and not the Dell models that were affected. HP Compaq Business Notebook nc6230 battery

Valence Technology N-Charge Power System I

This universal, portable power source ($ 199 or $ 299 direct) is compatible with just about any laptop on the market—including almost all of the Dell models affected by the recall—and offers up to 10 hours of plug-free power.

And unlike Lithium-ion-based power sources, the N-Charge isn't pyrotechnic prone, thanks to Valence's Saphion technology, which relies on a stable, phosphate-based cathode material that won't burn. HP Compaq Business Notebook nc6300 battery

M-Fuel's Notebook Power Bank

M-Fuel's claim to fame is a tiny chip the company designed that resides within its lithium-ion cells—purchased from Panasonic, not Sony. The chip identifies the power being drawn by the device being charged—whether it be a cellular phone, PDA, or laptop—and controls the voltage and other charging parameters accordingly. HP Compaq Business Notebook nc6320 battery

M-Fuel's site includes a direct link to online retailer BuyShipDirect, where customers can buy the Notebook Power Bank for $ 299.99 direct. The external battery pack provides up to ten additional hours of additional battery life. Not only does the battery pack include a set of universal plug connectors for charging the unit, but the box includes a set of power "tips", providing the right connection for your laptop. HP Compaq Business Notebook nc6400 battery

One question that occurred to us was whether these external batteries would be confiscated in the constantly evolving world of terrorism and anti-terrorist measures. The good news is that, to date, company executives report that they haven't had any problems. The bad news is that there's no guarantee that that will remain the case. HP Compaq Business Notebook nx5100 battery As of press time, laptops and portable electronic devices are allowed by both the American and British transportation departments, and we assume that means laptop batteries are as well.

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Laptop Battery Proper Make Use Of As Well As Maintenance
The battery is a single of a cover attention of usual regard to a keywords by everybody, we've listened battery explosion, laptop, dungeon phone battery blast etc, I hold you have headlines for dell batteries laptop battery had listened of a series of glow as well as blast thing, so to deliver a laptop batteries make use of ability is really important. Compaq 375974-001 battery SONY battery gave a opinion for a year, scarcely half a enlarge for those who have an blast or not blast cover batteries all onto us. Though people for laptop battery or combined a brand brand new understanding: "dangerous". Compaq APBT01A battery As well as in a golden pig usually starting soon, ThinkPad as well as sanyo batteries corner removed action, let laptop batteries in a spotlight again appear, turn a pass media as well as consumer focus, some-more let all make use of sanyo batteries battery laptop users, in to brand brand new be scared among. Compaq APBT01B battery So, because cover batteries will be an explosion, how you should scold make use of of laptop batteries, how to equivocate a blast accidents? You will demeanour initial laptop battery is stoical by what.

The inner combination laptop batteries A laptop batteries by carry out circuit is put a couple of lithium-ion batteries. Compaq APBT01C battery These lithium battery demeanour really similar to you customarily make use of AA battery, of course, they have been essentially not, inside of a containing alkali components as well as volume have been not a same, genius is a opening exists orders of magnitude.

Although a coming in a normal AA battery has a vast gap, though in a essence, is still a lithium ion (Li – IO battery, you initial see lithium ion (Li – IO, as well as make use of a characteristics of battery to notices. Compaq HSTNN-A10C battery A lithium ion battery (Li – IO tall section of physical phenomenon as well as a lighter weight, whilst a mental recall outcome is additionally distant prior to a than NiMH (NiMH) fashion, so a battery with low moment, a can contend is comprehensive mainstream.

Six degrees centigrade below, lithium ion (Li – IO) battery will own liberate each month, a many preferred 5%, is recorded in 40% charging ways, can save recorded chill 10 years. Compaq M62044L battery A lithium ion battery (Li – IO for feverishness additionally have been really sensitive, in a tall feverishness circumstance, it will be significantly condensed hold up spans, there competence even be a explosion; As well as for 0 degrees or a following low temperature, a again really might strike, even finish finish their life. Compaq W62144L battery To illustrate for lithium ion (Li – IO) battery, tall as well as low feverishness can move a lot of problems, light, complicated will change a battery hold up is expected to explode, approach hazard user's hold up safety. So, how to say laptop batteries as well as use?

1. Equivocate regulating cover battery underneath tall feverishness conditions As pronounced above, a tall feverishness commercial operation laptop battery hold up will exceedingly digest as well as even blast danger, so you should try to equivocate laptop batteries used in tall temperature, try to urge a thermal sourroundings cover computer, not usually can lengthen a hold up of laptop for laptop batteries, not a small help, Compaq hstnn-cb25 battery

2. Try not to make use of quick charging In fact, right away has a quick charging technology, have been general giant. This a single directed during a bieing born of commercial operation affairs personage, a outcome is viewable technology, try to save a commercial operation affairs somebody of changed time. Compaq 407672-001 battery Though in fact, this is a elemental element of increasing record of voltage as well as stream charging, will move some-more feverishness as well as to illustrate quick revoke battery life, as well as will almost enlarge battery explosion. Compaq 405231-001 battery Nonetheless a general companies have been written countless insurance technology, though from a series of cover for final year, it is easy to see these battery blast insurance technologies as well as is not everything. There's mastercard, quick charging can still equivocate is free!

3. Try to revoke battery assign as well as liberate Constant charging as well as discharging operations, will accelerate dungeon damage, though will a battery dismantling a off-site way, a writer does not advocate, after all, than a cost of cover mechanism batteries is utterly slim. HSTNN-DB36 battery

4.Never in slightly soppy or soppy conditions of make use of batteries In slightly soppy or soppy environment, easily, this short-circuited batteries repairs is really large, light is repairs to a battery as well as notebook, complicated is without delay occur extemporaneous blast as well as explosion.HSTNN-DB35 battery

5. If found a laptop batteries overheating or enlargement degeneration, now neglect Actually, nonetheless during benefaction already there were mixed laptop battery explosion, though with laptop battery millions of annual shipments speaking, a luck is not improved than in blast upon a travel in by, or was it a meteor strike a lottery in how most bigger millions of, so everyone additionally it is not required for a battery blast have as well most fear. RB775AA battery

Lenovo Notebook Battery Knowledge

The composition of laptop battery

Laptop battery is from batteries cells, control circuits, such as charging and discharging circuit components, while the quality of batteries for notebook battery the overall effect is the greatest. HP 595669-721 battery

At present the majority of notebook computer batteries are based on industry-standard batteries, generally divided into two kinds of cylindrical and square. Cylindrical-shaped batteries batteries bigger than 5 size, while the square of the size of the batteries is roughly equivalent to the size of a Zippo lighter. HP 595669-741 battery

How to determine the number of battery cells?

The current capacity of the mainstream of batteries: cylindrical for the 3.6 ~ 3.7V/2000 ~ 2200mAh, square for the 3.6 ~ 3.7V/1800 ~ 2000mAh, so the battery in the end use of the number of batteries, can be inferred according to the above figures, such as the IBM battery ThinkPad T60 battery and thinkpad T61 battery 10.8V/4400mAh, then it is the number of batteries 6, using a three-string, and two ways, namely: the three energy-saving core series to be 3 X 3.6V = 10.8V, the two sets of series after the batteries in parallel and then get 2 x 2200mAh = 4400mAh. HP BQ349AA battery

The IBM battery ThinkPad T40 battery and thinkpad T42 battery to increase battery 10.8/6600mAh, then the number 9 on batteries, using a three-string, and three ways, namely: the three energy-saving core series to be 3 X 3.6V = 10.8V, the two groups after the batteries in series and then parallel to be 3 x 2200mAh = 6600mAh.

Generally speaking, the greater expansion of the difference between battery and standard battery is that an increase of the number of batteries connected in parallel to increase capacity. HP BQ351AA battery

Overall, the laptop battery theory should be used in digital cameras and rechargeable batteries(thinkpad t60 battery,thinkpad t61 battery) almost. The number of batteries in a single volume the greater the more its long battery life.

Laptop battery Certification: HP FE04 battery

1, CCC Certification: CCC certification, which means "China Compulsory Certification", the English name "China Compulsory Certification", abbreviated as CCC. CCC certification mark of "CCC", the National Certification and Accreditation Administration Committee in accordance with "Administrative Regulations for Compulsory Product Certification" (The People's Republic of China State Administration of Quality Supervision, Inspection and Quarantine Order No. 5) developed. HP BQ902AA battery

2, CE certification. "CE" mark is a safety certification mark is regarded as the manufacturer to open and entered the European market passport. CE on behalf of European unification (CONFORMITE EUROPEENNE). Any affixed with "CE" mark of the product can be sold in the EU member countries, not required to meet the requirements of each member, thus achieving the commodity in the EU member states within the scope of free circulation. HP FE06 battery

In the EU market, "CE" mark is a compulsory certification mark, whether within the EU production of products, or products of other countries, in order to free circulation in the EU market, must be affixed on the "CE" mark to indicate product in line with the EU "technical coordination and standardization of the new approach" directive basic requirements. HP HSTNN-CB1P battery This is a product made by EU law a mandatory requirement. EU member states must be based certification bodies can issue certificates.

3, other (environmental class certification) Summary: In the notebook authentication options above, if the words behind the CE certification preferred option may, after all, Europe's stringent testing of electronic products in China stronger than some (personal view), of course, and if not, CCC certification is required. HP HSTNN-CB1Q battery

Essential Tech – How to Choose an External Notebook Battery

This is the era of the road warrior, and the ever trustworthy side-kick he must have – the external notebook battery. If you're one of the millions who do their work on the go, logging the miles on the road or in the air with your notebook, cell phone and various other electronic gadgets, a source of extra power that travels along with you is absolutely essential. HP HSTNN-Q85C battery This article lays out the facts you should have in mind when you go shopping for this crucial piece of technology.

Increasingly, the four walls of the traditional office are giving way for the mobile kind, and professionals are doing a large percentage of their business while on the road. Even cubicle-dwellers often have to move out for meetings, conferences and client calls while still bringing essentially the entire office with them. HP WM06 battery The average acer laptop battery life of today's notebooks range anywhere from less than an hour to around three hours in real-world use, and even the newer models that boast battery times of up to nine hours or more between charges are probably not going to last anywhere near that long in actual office use that usually includes accessing the internet, heavy multimedia and graphics programs and the like. HP 626869-851 battery

A good external notebook battery will add that critical extra power, and some models will even connect to your phone, portable printer, digital camera, and other devices, making an all-in-one power source.

When shopping for your very own external battery, consider the following specifications:

Adjustable output voltage – while the primary voltage should match your notebook requirement, an easily settable adjustable voltage will make the unit easier to use for your phone and any other battery powered device. HP 628419-001 battery

These "universal" external batteries usually come with an assortment of connectors to plug into different devices. Check that connectors are included or available for your devices.

International wall-plugs – For international travel, make sure that your unit has an input voltage that matches the grid voltage (110 or 220v/AC) and socket arrangement of the country you are visiting. HP GB06 battery Many units either have an automatic or manually switchable input voltage and several adaptors that will fit any wall socket standard throughout the world. Note however that the more "universal" a battery is, the harder to manage it will probably be because of all the different adaptor and connector pieces it comes with.

Exact voltage measurement – Do check that the notebook battery">fujitsu notebook battery you are getting has an output voltage and amperage that matches your notebook's requirements, assuming that your notebook is the primary device you will use the battery for. HP HSTNN-YB2D battery Modern notebooks usually have a small margin for error as to the electricity it receives from the power source and can be damaged if your battery supplies a vastly different voltage and amperage than what is needed.

Finally, a piece of tech as essential as an external notebook battery should be picked with care. HP 582215-241 battery Narrow down your choices and read the industry reviews and user experiences that are easily found on the internet and in the trade magazines. This should not be an impulse buy, and with care in your selection, your unit should serve you well for many years to come.

Find the facts, read the reviews, know everything there is to know about choosing your external laptop battery! HP HSTNN-DB0Q battery

Lithium-Ion Chemistry could possibly be the energy at the rear of Today's laptop computer Batteries

If you non-public a laptop computer computer, probabilities are extremely very good that it is possibly powered with a lithium-ion (Li-ion) battery. This battery type has found ask for within of a broad wide variety of customer electronics, which include PDAs and cellular phones. They have gained widespread acceptance as a final result of financial and specialized reasons, especially their significant demand to pounds ratio. HP WD547AA battery

Lithium-ion batteries have transformed the nickel-cadmium (NiCd) batteries that experienced been very first employed to energy laptop computer personal computers furthermore to the nickel-metal hydride (NiMH) batteries that superseded the NiCd laptop computer battery technology. HP HSTNN-XB0Q battery They have dominated today's rechargeable battery present market for laptop computer personal computers as a final result of the reality they are very much lighter compared to other types of laptop computer batteries, they retain their demand lengthier compared to other modern advances and as a final result of the reality they do not endure away from your storage effect phenomenon. HP HSTNN-LB2R battery A standard lithium-ion battery has two occasions the vitality density of the traditional nickel cadmium battery. Additionally, lithium-ion batteries possess just one cellular voltage of 3.6 volts as in comparison to 1.2 volts every cellular of nickel-cadmium batteries.

However, the drawbacks associated to lithium-ion batteries include: the chance that the failed battery pack can ignite below adverse conditions, they really are a complete great offer more delicate to significant temperatures environments compared to other battery modern advances within their ability to retain their charge, they may possibly fail if they are completely discharged, furthermore to the inherit chemistry belonging toward battery prospects to degradation with age as opposed toward more powerful correlation in between battery failures and charge/discharge cycles belonging toward more mature battery chemistries. HP PR06 battery Lithium-ion non-public computer batteries also need that safety circuitry be incorporated in to the battery pack to keep track of the battery demand and also to provide safe and appear voltage and present levels, furthermore to ensuring how the temperatures belonging toward battery persists to be within of a safe and appear working range.

HP 633734-151 battery Cylindrical lithium-ion battery tissue are usually tubular in shape, very much such as the issue of traditional alkaline batteries. several tissue are enclosed within of a plastic material real estate furthermore to the man or females tissue are attached within of a method to provide the exact output voltage and also to maximize safe-keeping ability (rated in milliamp-hours). HP QK646AA battery Prismatic shaped lithium-ion tissue are also available, but they are very much more compact and so are generally employed in products just like cellular mobile phones in which pounds and space is acknowledged like a prime consideration.

There are several components that effect the existence of the lithium-ion laptop computer battery. Battery degradation is hastened by heat, so storing the battery within of a awesome atmosphere will prolong its life. producers generally suggest a safe-keeping temperatures of around 60F for that long-term safe-keeping of lithium-ion batteries. HP 633807-001 battery These batteries, as stated previously, do not retain a storage from partial discharge cycles, so complete discharge cycles are not required. In fact, partial cycling belonging toward battery will help extend its life. Lithium-ion batteries do possess a limited lifetime such as the more mature battery technologies, but that is pretty impartial of the charging cycles and is also chiefly associated to their age. HP HSTNN-I98C battery A standard battery will last only two to three years. that is a fact even once the battery persists to be unused so it is basic to not purchase a substitute laptop computer battery right up until it is ready for getting arranged into service.

Types of mobile computer Batteries

Laptops abound with various sorts of laptop batteries. Lithium-ion, probably the most popular, is favored for exceptional performance. HP HSTNN-I98C-7 battery Other batteries utilized in laptops consist of nickel-metal hydride (NiMH), nickel-cadmium (NiCad) and different inner batteries that operate temporarily for particular applications.

Some laptops characteristic two secondary alkaline batteries to energy the inner clock. HP HSTNN-IB25 battery There also may perhaps be considered a 3rd battery to maintain the method operating whilst the primary battery is eliminated and replaced. mobile computer managers worried with battery overall performance have to verify the battery ingredients label to confirm battery type.
Lithium-ion
Lithium-ion batteries, also referred to as Li-ion, characteristic quick charging possibilities and exceptional overall performance more than nickel-cadmium or nickel-metal hydride models. HP HSTNN-IB2S battery

though they rarely catch on fire, Li-ion batteries are thought to be flammable. Li-ion batteries, susceptible to harm from overcharging, ought to be charged only using the laptop's authentic battery charger.

Because the batteries have large vitality density, harm for example crushing, puncture or disassembly can trigger actual physical injury from toxic resources distribute by fire or explosion. HP PR08 battery
Nickel-Cadmium
Nickel-cadmium (NiCad) batteries characteristic economical price, large discharge prices and lengthy life. producers suggest a slow 24-hour demand prior to initial use. This slow demand revives electrolyte redistribution. throughout lengthy storage space periods, electrolytes sink for the bottom within the cells. first demand prior to use also assists supply all of the battery tissues an identical demand level. NiCad batteries supply large latest output and final via 500 demand cycles. HP QK647AA battery

NiCad batteries shed recognition for intolerance to overcharging and environmental issues. perfect Buy, airwaves Shack and various mobile computer producers supply pc battery recycling services.
Nickel-Metal Hydride
The complete holding potential of all mobile computer batteries decreases with age. HP 609881-321 battery Nickel-metal hydride (NiMH) batteries characteristic 30 % extra potential than a usual NiCad of comparable dimension and consist of fewer toxic metals. NiMH, though environmentally extra desirable, has decreased cycle existence in comparison with NiCad. Discharging and recharging a NiMH extends the existence within the battery, but in contrast to NiCad, is not important for optimal performance. HP 609881-351 battery
Nanotechnology
Li-ion battery(dv6000 battery) configuration centered on nanotechnology produces ten occasions the electrical power of current Li-on batteries. Yi Cui, Stanford college assistant professor of resources science and engineering, heads a analysis set building software programs for silicon nanotechnology. HP 611708-001 battery Cui's experimental high-performance mobile computer batteries characteristic silicon nanowires that absorb extra vitality and supply higher battery life. The tiny silicon nanowires possess a diameter one-thousandth the thickness of a single sheet of cardstock and resist fracture. based on Cui, "It's not only a little improvement, it's a revolutionary development." HP HSTNN-XXXX battery
Better Notebook batteries Battery Life
It is an established fact for most electronic devices which boast of offering to get the job done with minimum effort at the least amount of time that this so called efficiency does not stay true if the battery is dead or empty. The advantages of technology work more effectively when the battery is up and at to support its functions. HP WM06 battery A weak battery for your laptop could be the thin line between failure and success in delivering that advertising presentation on that business meeting so be sure to take good care of your battery least you would want to be a soldier in battle who did not go through proper military training, now that would be disaster.

One way to minimize consumption of power and extending the life of your battery is to lower the brightness of your screen display. HP FN04 battery It is said that every level of brightness that is lowered is equal to almost ten minutes of battery life. The use of extra features such as ClearType fonts and other effects will also reduce the using up of power so you may want to opt out of these features when you want your battery to last longer. Cutting down on battery usage is simply a click away on the setting you have on your electronic notebook's control panel. HP QK648AA battery

Speaking of disabling features, you may want to do the same for unused devices. You may want to forego of the following or perhaps make sure that they are disabled when you are not using them; these are the Wi-Fi radio, the Ethernet adapter, the Bluetooth radio and the infrared transceiver to name a few. HP 614564-751 battery It may surprise you to know that turning one on could make a great deal of difference to your power use.

The lesser activity you have on your hard drive, the lesser the power consumption. A good way to minimize the frequency of the spins your hard drive makes to access data is make sure to make it a habit to defragment your hard drive on a regular basis. The process supports the drive in finding data as quickly as possible. HP 614565-721 battery

Also check on your Window's paging file. The advice is to optimize this setting to the recommended 1.5 times of the capacity of the installed memory for both the initial and the maximum paging file size as this serves as the virtual memory if your RAM is already full.

Another consideration is your startup items. Each time Windows boots up, the startup items loads up the memory and as a result other applications that have been left open are then forwarded to the virtual memory. HP ED03 battery It follows then that the load of the CPU increases as well.

It is to be remembered that at the get go, your laptop's battery should have been charged to 100 percent after the purchase; after which, the battery should have been discharged completely and charged fully to 100 percent again. This process is done to establish and set up the amount of electrical charge that your notebook's battery can hold. HP ED06 battery A good advice is also to keep your batteries on a cool, dry place when not in use as high temperatures can damage them.

Exterior Laptop Battery

The majority of us believe that the exterior electric battery becoming large not really handy to transport close to within our new laptop bag. Electric battery technologies offers can come towards the contemporary period. HP ED06066 battery Many of these electric batteries tend to be pounds not as much as 2 pounds usually through 1. 5 in order to 3. 5 pounds. Despite the fact that when you compare the actual laptop computer battery electric batteries, you receive just that which you compensated, importance these types of reduced pounds energy options could be pricey. HP ED06DF battery The cost runs from the laptop computer battery electric batteries begins through reduced 100 bucks in order to a lot more than 500 bucks; prepare yourself in order to shell out a great deal for the comfort. Ideally, the actual pricey battery packs are likely to provide you with additional electric battery existence compared to much less inexpensive electric batteries. HP HSTNN-CB1Y battery

Although the electric batteries tend to be high-priced, consider just how much it might set you back if it's unable to finish a substantial function product whenever you wish this given that a person go out associated with laptop computer battery energy.

The actual finished strategy associated with utilizing a laptop computer battery may be the advantage it offers associated with range of motion. HP HSTNN-CB1Z battery Everybody that functions the laptop computer battery offers suffered the actual discomfort associated with operating from energy. Last but not least, all of us discover that all of us call for energy probably the most correct in the center of essential function or even probably the most hard period. HP HSTNN-F05C battery Getting all of this in your mind, there are many various option selections for outdoors laptop computer battery energy besides the actual within the laptop computer battery electric battery or even the ability provide which delivered together with your laptop computer battery.

The actual gains of those various option options deliver a few such things as lengthy electric battery existence, lighter in weight pounds, back-up energy choices.

ninety (90) a matter of minutes may be the regular existence of the laptop computer battery electric battery, that is regularly not really acceptable time for you to total high of your projects.HP HSTNN-IB1X battery Another range of energy may be the outdoors electric battery (alternative). Almost all these types of outdoors electric batteries (exterior) as a result which their own wattage as well as link kind isn't correct with regard to the kind of laptop computer battery; empowering you to definitely rely on them of all typical laptop computer batterys. Common laptop computer battery manufacturers available for sale Acer battery, Sony, Dell, IBM battery, HEWLETT PACKARD, Lenovo, Entrance. These types of outdoors (exterior) electric batteries could quite often expand the life span of the laptop computer battery around 10 several hours; you can now definitely acquire some severe function carried out within 10 several hours instead of the typical ninety (90) min's. HP HSTNN-LB1X battery

Whenever you will search some other (exterior) electric battery, make sure that it's well-suited together with your laptop computer battery. Because such as corded energy materials, most of the common energy suppliers have a large amount of adapter directions that enable these phones link up almost all main companies. HP HSTNN-LB1Z battery You need to become aware of that's it is important a person appearance with regard to whenever you buying; how the product has got the particular guideline in order to connect in to your own laptop computer battery.

Those would be the Pros associated with outdoors (exterior) laptop computer battery electric batteries.

Brief notebook battery battery Tips

Universal laptop battery life is shorter than the main books, if used in normal circumstances would like to always maintain a good life time, then at least have to replace the battery. HP HSTNN-XA18 battery In addition, sony vgp-bps2b battery different habits can also cause short and long battery life, books, and some people are used to remove the battery to directly use the power supply, while others used long the battery inserted in the books, hot-swappable power supplies, so the life of the battery can cause tremendous damage.

Before introducing the price books, I first introduce some small knowledge about the battery. HP HSTNN-XB1X battery Start with appearance, the more genuine attention to the battery packaging, kraft paper box, anti-static sealing tape, foam lined, these measures can be well protected packaging cells, preventing cell damage during transport as well as scratch; and fake battery in order to save costs, will try to simplify the packaging, this battery did not use before a potential safety hazard. HP HSTNN-XB1Y battery Genuine battery in addition to the regular packaging, labeling is also very particular, specify the parameters of the battery, performance, application models, etc.; and counterfeit battery is more rough in the labeling.Finally we introduce the use of laptop battery tips sony vgp-bps2c battery can help extend laptop battery life.

1, a new battery for the first time use, make sure to run out over power, then turn off the charger about 12 hours to fully activate the lithium ion to achieve maximum capacity, cycle three times you can. HP HSTNN-XB1Z battery

2 each, of the number of lithium battery charge is about 500 times, such as prolonged use of an external power supply, remove the battery, which will not only help notebook battery cooling, which adds to the durability of the battery. Do not the case with the battery power plug again, this is the most likely damage the battery move. HP HSTNN-XB2C WY164AA battery

3, as long without the battery, please pay attention to maintenance. Pay attention to environmental temperature and humidity, do not put wet areas, to maintain ventilation, the battery must maintain more than electricity, charge up once every month or so, electricity, electricity consumption is best kept at around 50 percent. HP 538693-271 battery

4, battery and notebook battery CPU processor speed, dell d620 battery applications, screen brightness, wireless devices, external ports, and related factors such as battery life itself, so the actual battery use time may be different with the same type of battery. HP 580956-001 battery

5, as determined by the physical properties of the battery, the battery itself is a consumable, it will be the number of batteries used, the user habits, use of environmental temperature and other factors gradually reduce their use of time.

6, Please has failed to properly deal with the old battery, do not be thrown away.

Posted by: luckystar at 04:41 AM | No Comments | Add Comment
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Acer Emachines Laptop Battery Maintenance
Laptop Battery Maintenance
1, activate the new battery. You want your notebook battery longevity, there must be a good start, which was to buy a notebook from the start. Acer Aspire 7750G battery New laptop batteries at the first boot with 3% of electricity should be (this is common practice firms. If you buy the notebook first opened, found that the battery is fully charged, is certainly used by others), this time, you should first do not use external power, the battery inside the power exhausted, until the shutdown, then use the external power supply charge. Acer Aspire 7750Z battery After returning home, even after the exhaustion of the battery charge, charging time must be more than 12 hours, repeated three times to activate the battery, in order to lay a good foundation for future use.
2, to minimize the number of EMACHINES D440 Battery. This method seems to be some people feel stingy, but it is also the most effective. Acer Aspire 7750ZG battery You know, the battery charge and discharge directly to the life of each battery charge, battery on a step forward to retirement. Recommend you use an external power supply, use an external power supply when the battery removed. Some friends of convenience, often several times a day the power plug, and the laptop is equipped with batteries, do more damage to the battery. Because each time access is equivalent to an external power supply battery charge time, battery life shortened by a natural. Acer Aspire AS4250-C52G25Mikk battery
3, after the exhaustion of battery charge and avoid charging time is too long. Regardless of your notebook to use nickel-metal hydride or lithium electricity, to power must be exhausted after the full (capacity less than 1%), which is the best way to avoid the memory effect. No memory effect on lithium argument, I note in front of businesses irresponsible misled. Lithium also have memory effect, but its memory effect than Ni-MH small number of Bale. Acer Aspire AS5250-C52G25Mikk battery And battery charging in the same way, when you charge the battery to the laptop, try to avoid too long, the general control within 12 hours. As for the prevention of exposure to prevent damp to prevent erosion chemical liquids, avoid contact with the battery contact with metal objects such as notes, much to mention here also.
The first charge, you should continuously charge the battery to 12 hours, and cycle to fully charge and discharge times (see the battery maintenance section) in order to wake up completely new battery, if this is not the battery is stored for a few months use, it is also recommended for three complete charge and discharge.Acer Aspire AS5250-C53G25Mikk battery If a battery by 12 consecutive hours after charge and discharge cycles, or three times still can not charge this battery can not be used needs to be replaced.
Laptop computers are used in the current lithium-ion battery as its power source, not equipped with the battery for a notebook, the notebook has completely lost its own meaning, and a mobile PC is no different samples, so that the notebook computer notebook computer battery is the very important qualitative components. Acer Aspire AS5250-E352G32Mikk battery
Avoid the use of lithium batteries under high temperature, expert studies, high temperature conditions will accelerate the aging process of lithium batteries, and not to the same extreme low temperature environments. Low temperatures will reduce the activity of lithium EMACHINES D442 Battery to reduce laptop battery life. Activate regular lithium treatment is fully charged and discharged, so that the maximum capacity lithium recovery. Acer Aspire AS5253-C52G32Mnkk battery Approach is to turn off all power management, so that slowly discharge until the laptop is fully discharged and then fully charged, can be repeated two or three. Hot weather, as far as possible safeguard their own laptop batteries, notebook computers also allow better play their role. Want to maintain your laptop battery will not become part the trouble.
Laptop battery notebook computer can be said that the most important source of inspiration. Acer Aspire AS5253-C54G50Mnkk battery No batteries to provide energy, you can not complete the special requirements of mobile office. Then we can only laptop in the hands of a mobile PC Bale. The laptop battery maintenance and use of skills has become the most difficult thing for most consumers. Acer Aspire AS5253-E353G32Mnrr battery Now in use and maintenance of laptop batteries have been different opinions on this issue, I now combine their own experience and advice of a Taiwan-based notebook brand customer service center engineer the battery after use and maintenance of this situation, and so a brief introduction, and will be in-depth discussion of my friends in the laptop battery maintenance and daily use in the presence of some errors to do some corrections, hoping to help our friends. Acer Aspire AS5253-E354G32Mnkk battery However limited, the article if oversight is also beg the indulgence of our friends look!
There is also a need to pay attention to the question: if long-term battery-powered and not powered with AC adapter (such as students), put the battery in a cool dry place such as cabinets. This approach is to avoid humid environment, while if the machine not the best place to separate the battery and the books, do not believe we bought a time when attention to cell phones and books to see, business is not separated from the battery and the machine's? Acer Aspire AS5741 battery
hang up, but there is no way to pull the battery
I have seen some friends before the machine can not properly shut down the phenomenon, even illegal shutdown are not effective, Blame the great "fainted dead" system now! Finally her brother directly to one-third to pull the battery with eyes closed two stamping feet, and heard books scream would stop. Acer Aspire AS5741-H32C/S battery In fact, this approach is very harmful, because in the standby state, the memory is powered and working, if hasty to take down the battery directly, data loss is inevitable, not in the plug when the AC adapter to take the EMACHINES D640G Battery This approach can only be a hundred harm

ASUS K53SK K53SM Notebook Battery Review Acer Aspire AS5741-H32C/SF battery
From the test results can be seen, which hard disk write speed almost the height of the read speed, which require a higher speed in accessing the user is indeed a good news. The test from the write speed of 154.6MB / S.
As the main target of this evaluation is the card with the ASUS Array SAS hard disk transfer speed test, since it is for speed, then we will need to explore its fastest, the best place in the end where they are. Acer Aspire AS5741-H54D/LS battery We all know that a few hard drive RAID0 works in parallel processing, accessing the data, respectively, by the simultaneous operation of several drives, read and write their own parts, so the speed is the fastest. Sorry is the way I only have two hard drives, we can only explore two hard disk drives is the speed of a ASUS K53SK Battery .
The following two sets of test data are derived from RAID0 data read and write speed, the speed reached a 295.6MB / S and 286MB / S, compared to a single hard disk read and write capabilities, almost doubled in real times, which can be regarded as a consistent theory and practical special case, RAID0 read and write performance really extraordinary. Acer Aspire AS5741-H54D/S battery
The following test replacement PIKE 1068E card, the protagonist of this evaluation, the official debut-PIKE 2008 card. The main test here two cases, first, PIKE 2008 SAS I drive card with read and write performance tests to verify the card downward compatibility PIKE 2008; Furthermore, the test card with PIKE 2008 SAS II hard drives, and explore its highest reading write performance. Acer Aspire AS5741-H54D/SF battery
Similar to the above test procedure, first to test drive their single SAS I read and write speed. Read and write speeds tested were 150.3MB / S and 140.6MB / S. And PIKE 1068E test scores compared to the results a little behind. Backward compatibility in the performance was not very good, because after all, is an array PIKE 2008 card should be used to measure its performance mainly depends on their doing a variety of arrays and other hardware matches shown, so this data does not describes its performance as PIKE 1068E card, we only can be used as a reference. Acer Aspire AS5741-N32C/KF battery
Throughout the RAID 0 is the transmission speed, PIKE 2008 card the same down to leeward, but not much. Here, further evidence, SAS I drive with PIKE 1068E PIKE 2008 card performance than to play better. The array as a second-generation card PIKE 2008 in the use of generation hard disk, there is no generation with generation of hard disk array card play. Look forward with a second generation SAS hard disk, PIKE 2008 card to maximize its performance. Acer Aspire AS5741-N32D/K battery
Usually you can charge and discharge lithium-ion battery 300-500 times. More suitable for lithium-ion battery is not fully charged, and not suitable for rechargeable battery completely exhausted, so frequent a full charge and discharge should be avoided. Although the lithium-ion batteries have no memory effect, but some lithium-ion batteries have been engineers called the existence of a number of memory problems, because the frequent short battery charging does not take full, the battery's own power detector (usually laptop computer batteries have the device) will not completely filled according to the capacity to adjust. Acer Aspire AS5741-N54E/K battery However, if after charging and discharging every 30 times, to conduct a full charge and discharge, we can solve this problem. The best way is to let the battery has been used when the mobile device can not start to conduct a full charge. If you ignore this, then the same lithium-ion battery capacity will be gradually reduced. Acer Aspire AS5741-N54E/KF battery
Aging of lithium-ion battery is easy to overlook the problem of a user. Lithium-ion battery life is usually 2-3 years, and computing time is from lithium-ion ASUS K53SM Battery production line out from the moment the date. With the oxidation of the battery, the battery's capacity will be gradually reduced. When the battery capacity reduced to a certain point, the battery can no longer continue to be used, although this is still the battery can store a certain amount of power. Acer TravelMate 4370 battery Part of the laptop and cell phone batteries by adding a certain amount of cobalt to solve this problem.
1. Carefully check the computer interface and battery interface connection is correct.
2. Replace the battery, charging adapter for a power to activate the battery, in the off state then disconnect the adapter, re-boot. Acer TravelMate 4740 battery
3. Please contact for a new battery.
4. Contact your local dealer or service.
Second problem: the battery is not used for some time, re-use when less power or no power
Possible reasons: 1. No charge 50% of the storage capacity itself rarely 2. By battery quality or storage environment, the natural loss of battery 3. Shelved for too long, not regularly causing the battery charging and discharging of the natural attenuation . Acer TravelMate 4740-352G32Mn battery
Solution:
1.100% charge normal use on it.
2. Normal, normal use after charging.
3. Please replace a new battery.
Problem Three: The battery shows charging has been completed (100%), but disconnect the AC power, battery power supply can not normally cause the computer to crash.
Possible reasons: 1. Operating temperature is too high, causing the battery over-temperature protection 2. The process of charging the battery there is a problem, resulting in power display distortion. Acer TravelMate 4740-432G50Mna battery

4400mah TOSHIBA Qosmio F750 3D F755 3D Battery Tips
Some notebook will adjust the BIOS, CPU and other parts of the state of energy-saving technology to check the feature is turned on. In use to save the usual long as we pay attention to the use of TOSHIBA Qosmio F750 3D Battery power consumption can be reduced. Acer TravelMate 4740-5261 battery
Here we summarize it so that you can use the attention.
â‘ . Peripherals connected to the expansion port removed immediately after use, such as printers, scanners, digital cameras, mobile hard drives, USB floppy drive and so on. As long as these peripherals connected to the laptop computer, even if does not work will consume battery power;
â‘¡. If the PCMCIA slot expansion card no need to use, should be immediately removed; Acer TravelMate 4740-5452G50Mnssb battery
â‘¢. A large notebook drive power consumption, no need to use the CD to be taken out, otherwise it will break to read, increased energy consumption. Smooth performance notebook cooling heat and power very close relationship between the two, which is the way the heat from the laptop TOSHIBA Qosmio F755 3D Battery to the decision. Laptop computers generally use a thermostatically controlled fan with heat pipe cooling technology, will only reach a certain temperature, enable the built-in cooling fan.Acer TravelMate 4740-5462G50Mnss02 battery Once the notebook computer's internal air circulation, heat pipe heat can not spread out in time, will cause the fan stop running. Since only the laptop internal temperature reaches a certain temperature, the fan will run, we note the following points can reduce fan energy consumption. Acer TravelMate 4740-7552 battery (1). As far as better ventilation or air-conditioned rooms. (2). Do not let debris and dust blocking the vents of the laptop, cooling ducts, the heat sink internal parts can not be dirty, I had a thick gray split into a notebook everywhere, that would lead to heat a lot of trouble. (3). In the home or office use, the best cooling effect for a good cushion pad at the bottom through the water cooling pad for laptop better. Acer TravelMate 4740-7787 battery

Notebook battery refresh program Lesson
Using the battery refresh program to restore the battery's discharge time
Big brand laptop has a battery refresh programmer, we can use it to repair the battery. For example: a IBMThinkpad390/262650 based laptop, the distribution for the nickel-metal hydride battery(Ni-Mh) batteries, as usual discharge properly, leading to the battery discharge time is short, only less than 5 minutes, if carrying a laptop to work, then it is very inconvenient, what methods can restore the battery's discharge time? for the above, we can use the IBM has launched a ACER Aspire One 753 Battery refresh program to refresh the batteries, discharge time to recovery, specific methods are as follows . Acer TravelMate 4740G battery (1) the use of AC power to the laptop, the first to ftp://fip. pc. ibm. com / pub / pccbbs / mobiles / isbr01ww. exe download the IBM provided TP390/390e/390x series laptop battery refresh program. (2) Restart your computer, press F8 to enter boot menu and select safe DOS mode. You may give them such questions, I am also P4 machines, why feel so slowly? Acer TravelMate 4740Z battery The reason is that the hard disk, and now the mainstream notebook hard drive speed is 4200 rev / min, 5400 gradually into the mainstream, and although the hard disk has been around 7200, but the application is minimal. The current minimum is also a desktop computer 7200, and the overall performance hard drive is a very critical constraint of a hardware, so slow to slow in the hard disk. Acer TravelMate 4750 battery
(3) just download the files into the directory, the implementation of the battery refresh program isbr0lww, exe, reading the warning message, insert the floppy disk as required, and then press the Enter key to the implementation of the self-extracting operation. (4) boot floppy disk with this computer, the screen appears StartingPC-DOS. . . Message. (5) prompted unplug the AC power, the program will automatically be on the Ni-Mh battery discharge, discharge is completed, the system will automatically shut down. Acer TravelMate 5335 battery (6) The ACER Aspire One 753 Battery temperature is high at this time, should not immediately start, after the battery cool for a while, plug the AC power. (7) boot the computer with a floppy disk, the Autoexec. bat file will automatically run the refresh program, and ask the user whether to proceed. Select yes, press the Enter key. ( At this point, refresh process began to refresh the battery, the process soon, when the return to DOS prompt A:> when that refresh is complete. (9) Shut down the computer, and charge the battery until the light turns green so far. (10) The above procedure is repeated three times to get the best results. Acer TravelMate 5335G battery
Battery life not by the length of the total use of time, but by the charge and discharge times to decide. If you always to the notebook without the battery installed to take down, even if turned off the machine and remove the AC power after the batteries are not like the thought kept as fully charged state. Acer TravelMate 5335Z battery Notebook batteries because the battery in the integrated control circuit, so even when the power is also shut down the computer power. As an AC power source connected, the battery will start charging, when turned on or off the power when the battery is repeatedly charged and discharged, affecting battery life.
In addition, many lithium battery pack failure is the result of a failure of energy-saving core, this phenomenon can not be avoided. Acer TravelMate 5340 battery Because each cell batteries can not be completely consistent with the nature, quality and use for a long time some little worse after the beginning of aging, and damaged the whole (in series) if the discharge curve. Interest and ability of the reader can try to open the DELL Inspiron N4120 Battery pack, the multimeter's help, you can quickly find the damaged batteries (abnormal voltage). If conditions allow, according to the corresponding parameters of batteries can replace the qualified product. Acer TravelMate 5340G battery

Method of repair laptop battery
Most Laptop manufacturers in the product when leaving the plant are said to buy a new laptop should be in full discharge of the case, repeated three times on the battery fully charge / discharge, charge, preferably more than 14 hours. Acer TravelMate 5542 battery It is so short, so that the notebook computer users had a wrong view. In fact, the laptop products at the factory before the battery will activate, in order to avoid wear and tear affect battery performance, with only a small amount of electrical energy. Since the completion of a laptop battery is fully charged ACER Aspire 1830T Battery, it will automatically stop working, there is no need to maintain the charge time to 12 hours. In general, buy a new laptop just follow the normal charge / discharge method can be activated. Acer TravelMate 5542G battery
At present, most brand laptop recovery disk will only cover the system partition C, even if the partition will be restored to factory default state of a partition will be prompted to give the corresponding options. The Compaq laptop I've seen the recovery disk will be handed does not give any tips in the case resume into a partition. Acer TravelMate 5735 battery So get a new laptop and then be sure to use after the resumption of what the system restore disk to avoid future data storage and more time be thrown off balance.

the notebook ACER Aspire 1830Z Battery can be converted the other system?
Can say that this really is a problem of food at home, do not know why so many users will ask the new laptop. Acer TravelMate 5735Z battery Notebook computer is, it, like desktop computers, the drive can be installed under the premise of supporting any PC operating system.

The Reason of damage battery
When using Laptop battery long time, I am often dissatisfied with electricity charge, and even the battery is damaged, the specific performance is larger resistance, the voltage across the charging up faster. Acer TravelMate 5735ZG battery This easy to charge control circuit judge to have full capacity will naturally decline. As the larger battery internal resistance, discharge voltage drop, high speed, so the system is easy to mistakenly believe that voltage is not enough power is low. Comparison of the discovery of short battery life, should take corresponding measures.
You may give them such questions, I am also P4 machines, why feel so slowly? Acer TravelMate 5740 battery The reason is that the hard disk, and now the mainstream notebook hard drive speed is 4200 rev / min, 5400 gradually into the mainstream, and although the hard disk has been around 7200, but the application is minimal. The current minimum is also a desktop computer 7200, ACER Aspire 1830TZ Battery and the overall performance hard drive is a very critical constraint of a hardware, so slow to slow in the hard disk.
XI, and why some functions with a super-rabbits are ineffective? Acer TravelMate 5740-332G16Mn battery
Super rabbit lot of people will optimize the Masters this desktop optimization of weapons used in conventional laptop on, used, found that many features with the good about failure, such as the brightness of the sound adjustment. The reason is the super rabbit will be the drivers of these features as unnecessary since the launch of the process to the disabled, such as the Hotkey drivers and so on. Acer TravelMate 5740-332G25Mn battery So this kind of optimization procedure used in the notebook even, if you have to optimize as far as possible, after determining which does not require manual optimization.
How to extend laptop battery life?
Laptop battery long time to charge less often, or even show damage, and therefore must use attention to some tips: No matter what your laptop to use nickel-metal hydride or lithium electricity, to power the basic exhaustion as much as possible and then charge (charge less than 5%), which is the best way to avoid the memory effect. Acer TravelMate 5740-333G25Mn battery In fact, the lithium-ion battery has some memory effect, but much smaller than the nickel-metal hydride batteries Bale. But note that charging the battery, try to avoid too long, the general control within 12 hours.

laptop and battery information review
Lenovo was founded in 1984 by the Institute of Computing investment of 20 million yuan, 11 scientists founded, and today has grown into a diversified development in the information industry within the large enterprise groups. Acer TravelMate 5740-333G32Mn battery Fiscal year 2002 turnover of 20.2 billion Hong Kong dollars, currently employs more than 12,000 people in 1994, listed in Hong Kong (stock code 992), the Hong Kong Hang Seng Index constituent stocks. During 2002, Lenovo's market share of 27.3% (source: IDC), PACKARD BELL EasyNote SB85 Battery from seven consecutive years since 1996 among the domestic market sales of the first, to end of March 2003, Lenovo Group has 12 consecutive quarters of the Asia Pacific market ( excluding Japan) first (source: IDC); 2002 second quarter, Lenovo's Desktop shipments for the first time to enter the global top five, which ranked third in the consumer PC world. In the past ten years, Lenovo has always been adhering to the "let users better" philosophy has always been dedicated to the Chinese users with the latest best technology products, and promote China's information industry development. Acer TravelMate 5740-352G25Mn battery
Haier Haier
Haier Group is the world's fourth largest white goods manufacturer, China's most valuable brands, Chinese brand buyers satisfaction. Haier set up more than 30 countries around the world design center localization, manufacturing bases and trading companies, employs more than 50,000 people worldwide, has developed into a large multinational corporation, Haier 2007 global turnover of 118 billion yuan. Acer TravelMate 5740-372G25Mnss battery The current president of Haier Group, Haier Group Yang Mian Mian. In the Haier Group CEO Zhang established under the guidance of brand strategy, has the implementation of brand strategy, diversification strategy and internationalization strategy, the end of 2005, Haier's strategy to enter the fourth phase - the phase of global brand strategy. Acer TravelMate 5740-434G32Mn battery Business for 24 years of hard work to make Haier brand in the world-wide reputation has increased significantly. In 2007, Haier brand value up to 78.6 billion yuan, since 2002, Haier brand value for six consecutive years ranked China's most valuable brands list. Haier brand refrigerators, air conditioners, washing machines, televisions, water heaters, computers,PACKARD BELL EasyNote SB87 Battery, mobile phones, home integration products have been awarded 19 Chinese brands, including Haier refrigerators, washing machines was also named the first batch of China State Administration of Quality Supervision world famous. Acer TravelMate 5740-5092 battery In August 2005, Haier was the British "Financial Times" as "China Top Ten world-class brands," the first. In 2006, "Asian Wall Street Journal" organization named the "top 200 enterprises in Asia", the Haier Group, the fourth consecutive year topped the "Mainland China enterprise integrated leadership" topped the list. In 2008, the World Brand Lab value selected for the preparation of the "Chinese buyers of brand satisfaction," ranked fourth. Haier has been among the ranks of world-class brand, its influence is expanding as the global market grew rapidly. Acer TravelMate 5740-524G32Mn battery
Charge and discharge: As you complete release after the completion by the principle of full charge and discharge the battery back and forth two or three times to offset the curve of the battery can be repaired over. Note: When charging the battery is full to make sure the best way is to shut down filling several hours or overnight and then unplug the power discharge, until the computer shut off automatically. This back and forth at least two cycles Acer TravelMate 5740-5896 battery
Method Two:
And charging the battery in use will cause instability in the capacity of the PACKARD BELL EasyNote SB86 Battery down, but the decline was not caused due to aging, so the calibration is appropriate to make this part of the recovery of the lost capacity. Therefore, regular battery calibration is very necessary thing, such as 1-2 months time. Acer TravelMate 5740-5952 battery
To get the battery recovery, apart from replacing the batteries, but also through the SMB bus (remember that the content in front of it!), Into the control circuit setting the parameters, the parameters re-set the battery This return to normal. Not only can charge and discharge, and to accept the management of laptop and software shows battery status. Acer TravelMate 5740-6070 battery
Cause of the malfunction is found, and can repair the time, merchants will inform the maintenance costs (eliminating the haggling process among several.) Disassemble it, remove the old battery cell and put a new one. Note, the battery cells are completely replaced in general, not only for part of the argument. Acer TravelMate 5740-6291 battery
capacity? Power? Who is concerned with the use of time in the end?
The manufacturers of notebook batteries have a more detailed description, we can often see the "6-cell 4400mAh", "4-cell 2200mAh" nominal value such as batteries, over time, we believe that directly determines the capacity of 4400mAh or 2200mAh laptop working hours. Acer TravelMate 5740-6529 battery
Let's take a look at the composition of a laptop battery. Remove intelligent control circuit, notebook battery is actually a battery pack, batteries usually 3-12 pieces (that is independent of the lithium batteries), with their way through the series and parallel combinations together to form large-capacity high-voltage MSI Wind L1350D Battery group. The principle is to parallel the increase in current, in series to increase voltage, these are junior high school knowledge of physics to relate to. Acer TravelMate 5740G battery
The common 2200mAh, 3.6V batteries, for example, a number of small series may be composed by four batteries, the voltage is 14.4V, Capacity 2200mAh.

Laptop Battery Maintenance Tips
Laptop Battery Maintenance - 3, after the exhaustion of battery charge and avoid charging time is too long regardless of your notebook to use nickel-metal hydride or lithium electricity, to power after the exhaustion of a certain charge (charge less than 1%), which is The best way to avoid the memory effect. Acer TravelMate 5740G-334G32Mn battery No memory effect on lithium to say, I had in front of businesses that are irresponsible and misleading. Lithium also has memory effect, but its memory effect smaller than nickel-metal hydride Bale. And battery charging as same as you charge the battery to the laptop, try to avoid too long, the general control within 12 hours. As for the prevention of exposure to prevent damp to prevent the erosion of chemical liquids, avoid contact with metal objects touch the battery and other precautions mentioned here are limited.
Acer TravelMate 5740G-434G32Mn battery The new battery can improve the deep charge-discharge lithium-ion battery's actual capacity? See related information in the information which can not, I also asked an expert for this, experts say this is meaningless. The first three could not think of all the so-called charge-discharge using the "activate" what is necessary. But after we marked in the deep charge-discharge capacity of why change it? Acer TravelMate 5740G-524G50Mn battery
Compatible original SAMSUNG NP-M730 Battery Code:
AA-PB9NC5B AA-PB9NC6B AA-PB9NC6W
AA-PB9NC6W/E AA-PB9NS6B AA-PB9NS6W
AA-PL9NC2B AA-PL9NC6B AA-PL9NC6W
Fit machine:
SAMSUNG E251 Series SAMSUNG NP-E251 Series SAMSUNG NT-E251 Series SAMSUNG E252 Series SAMSUNG
NP-E252 Series SAMSUNG NT-E252 Series Acer TravelMate 5740G-528G64Mn battery
Notebook computer lithium-ion batteries are generally with management chip and charge control chips. The "management chip" in a series of registers, there is capacity, temperature, ID, charge status, and discharge times and other values. These values are in use will gradually change. "Charge control chips" mainly control the battery charging process. Acer TravelMate 5740G-5452G32Mnss battery Lithium-ion battery charging process is divided into two phases, fast charge constant current phase (the battery indicator light yellow) and constant current decline phase (the battery indicator light flashes green. Constant current fast charge phase, the battery voltage is gradually increased The standard voltage to the SAMSUNG NT-R719 Battery , then under the control of the chip into the constant voltage, the voltage will not rise to ensure that no over-charge, current is increased gradually as the battery level reduced to 0, and the ultimate completion of charging. inside the battery have a statistical power chips, will discharge curve by recording impulse (voltage, current, time) can calculate the sample battery power, this is what we read about in the Battery Information wh. value. Acer TravelMate 5740G-6765 battery The lithium-ion batteries in the repeated use , the discharge curve may change, if the chip has been no opportunity to once again read out a complete discharge curve, the calculated power is not accurate. so it is necessary to calibrate the battery charge-discharge depth of the chip.

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Top Quality ASUS K55VD K55VS Laptop Battery
The keyboard design is also ASUS's ultra-pole compared the characteristics of a keyboard operating area of ​​the depression designed to keep the same minimalist style with ASUS K55VDseries, followed by the keyboard keys design a reasonable sense of the intensity of keystrokes. Asus K53E-SX058V battery
The touchpad design looks fine, brushed metal panel is also very light contrasting fashion sense, touchpad with integrated design, the middle of a line to separate the area of ​​the touchpad and buttons. However, the buttons of the touchpad experience is not good use when you press down more demanding, long the touchpad fingers easily fatigue. Asus K53E-SX069V battery
The ASUS K55VD. Interface edge D surface of the fuselage with the design of red spray paint, red and black classic colors from the side, so that the ASUS K55VD overall look three-dimensional, color patchwork ASUS K55VD Battery. Interfaces, ASUS K55VD is equipped with a laptop most of the required interface. Including three USB ports, HDMI video output, card reader, audio interface, and network cable port. Asus K53E-SX104V battery
It is worth mentioning is that ASUS K55VD cable interface design is very clever, and tested in our previous HP the Folio 13 is somewhat similar, but further improvement and optimization. The bottom of the cable port is a flexible baffle force Bankai can be plugged the network cable which the tailgate when not in use, to withdraw. Can be said that this design not only take into account the thickness and appearance of the body to also take care of the user experience. Asus K53E-SX111V battery
It is worth mentioning is that ASUS K55VD cable interface design is very clever, and tested in our previous HP the Folio 13 is somewhat similar, but further improvement and optimization. The bottom of the cable port is a flexible baffle force Bankai can be plugged the network cable which the tailgate when not in use, to withdraw. Can be said that this design not only take into account the thickness and appearance of the body to also take care of the user experience. Asus K53E-SX123V battery
Through simple trial, I feel that the ASUS K55VD is a design took the products of the mind, as a super-pole of this, ASUS K55VD design slim, stylish design and attention to detail in the interface area by clever design space on the contradiction. And this ultra-pole of this highly respected by the domestic users in the configuration, equipped with high-performance discrete graphics. Asus K53F battery It can be said that the ASUS this super pole this is not only done on a portable pole "in terms of performance to be compared with the current mainstream games this ASUS K55VS Battery . On the performance of this product, we will make a detailed analysis in the future evaluation of the article, so stay tuned!

ASUS K55DE K55DR K55N Battery Review
More mature super pole this must still high-resolution, but perhaps then our software and operating systems, and web standards should have occurred to change, our products will be more like a duck. Asus K53J battery
11-inch MacBook Air with 1366 * 768 resolution, Apple's MacBook is normally the default TN screen, the first generation Asus ZENBOOK UX21 TN screen, the S3 upgrade to the IPS screen.
Windows 7 operating system, than on what we found ASUS S3 biggest advantage in this one is the viewing angle, the total of about 178 ° viewing angle basically realized no dead ends without distortion, while the MacBook with the MacBook Air Installation the viewing angle changes, the picture darken, color distortion, particularly obvious. Asus K53J-D1B battery
Of The the new the iPad 2048 × 1536 resolution, ppi to 253, the same small size on the screen using high-resolution, the resolution of the "steak" than ASUS K55DE Battery.
Both have the IPS screen with wide viewing angle display are relatively good, just slightly different display styles, S3, more vibrant color saturation greater, the color of the "steak" relative saturation of the low, but the contrast larger. Asus K53J-SX216 battery
ASUS S3 ultra-pole the UX21 difference in appearance is very small, the same use of CNC machining technology, the use of aluminum body, it is understood, Asus UX series each set of shell kit produced took about four hours, a CNC lathe The day can only do three sets of metal casing.
ASUS S3's screen fastening tight circle rubber strip with the edge of the screen box can greatly reduce the impact brought about by the opening and closing time, and can effectively prevent dust intrusion. Asus K53JA battery The machine shaft damping force is really excellent, accurate positioning of the screen viewing angle, with one hand can be easily moved back and forth, the screen open a maximum angle of 130 °, basically meet the requirements of most users to observe the screen perspective
Top cover for the small curved design, received the treatment of side effects round and smooth and the surface use of hand-polishing, aluminum wire drawing process of the concentric circles of light refraction, the user no matter from which angle of observation, his eyes are locked to the center of ASUS LOGO up. Asus K53JC battery
ASUS UX21 body shape like a wedge-shaped, very sharp leading edge polished, only after the actual test front-end thinnest 3mm, then the Ministry of the thickest place is 16.67mm, it should be able to control in such a thickness range of models and rare.
ASUS S3 chocolate-style full-size keyboard, the keys polished surface is quite delicate, keyboard, 3.6 mm thick, the actual percussion test, while pressing the soft touch, but the key key with a shorter duration, and long typing wrist will be a slight sense of fatigue, but for super pole this in order to effectively control the body thickness for this reason, the key way or within an acceptable range. Asus K53JE battery
The ASUS S3 touchpad uses tempered glass steel, thickness 2.75mm, the palpable larger, compared with the traditional laptop touchpad, ASUS K55DR Battery innovative induction point is more scientific, while the Asus UX21 also supports up to 20 touch operation. Asus K53JF battery
About five or six years ago, I have a Fuji digital camera, and when the seller told me that this camera has 6 million pixels, to buy back only to find the actual pixels of 3 million, 6 million pixels is through the promotion of "interpolation" to achieve. This interpolation does not understand the so-called "interpolation" the camera via the built-in, the actual pixel one become two, two variants of the four, and then generate a new pixel is inserted into the otherwise close to the gap This total number of pixels and the density increased, the quality looked even more fine. ASUS U36 battery
Later, Apple New the iPad will increase the resolution to 2 056 × 1536 size of its nearest super pole this Asus of S3 (11.6 inches) and resolutions up to a full HD, but two, even though there improved resolution display principle are quite different.
ASUS S3 1920 × 1080 resolution, the absolute count of the high score screen of the notebook, called the high score screen, that is, the smaller physical size to accommodate the same pixel and the general size of the display shows the original size, so with the general display content, the high score screen smaller than the average monitor display. ASUS U36J battery Such benefits are obvious for office users, you can control more content on the same screen at the same time.
Apple's New iPad Retina and gaofenping, different places is to enhance the number of pixels, not in order to show more, but at the same time display the original size, the same number of looks more sophisticated.
We know that to the iPad the New iPad2, the length and width of the number of pixels to enhance the 2 times (1024 × 768 upgrade to 2048 × 1536), so that the overall number of pixels to enhance fourfold, while the iPad physical dimensions unchanged, which also means that New iPad new screen one pixel corresponds to the old screen four pixels, then the display image of the old screen design can be amplified through the interpolation method to enhance the display, and if it is redesigned for a new screen image. or had a very large picture, the accuracy increases doubled, the image will add more details. ASUS U36JC battery
Many people think that the pixels more than a small screen, makes eye fatigue, in fact, for each person, the brain has a strong gestalt orientation, we see that the incomplete incomplete, or display the rough content, The brain automatically fill we see things and incoherent parts, so from this point of view, we see more details of the more abundant, the burden on the eyes should be reduced. ASUS U36S battery
The recent period of time, many brands have launched a new ultra-pole of this. From the release number of new products and promotion efforts, no doubt HP's ultra-pole of this new product is the most eye-catching HP force in the commercial and consumer markets, the introduction of the different positioning a variety of ultra-pole of this, showing that in this year's super-polar city field attitude and determination. ASUS U36SD battery
HP released these new products, aimed at the general mainstream users ENVY. Concern in the highest. HP in the market focus on promoting a product, we are lucky enough recently to get the HP ENVY. 4, the following real machine photographs, the first time for everyone to bring our simple test and trial experience. ASUS K73 battery
HP ENVY series has introduced many impressive thin and light notebook, the introduction of ultra-pole of this also has a slim, simple, fashionable style, the materials used sophisticated, fine workmanship, ENVY. Will become ultra-pole of this family distinctive feature of the product.
ENVY. Cover with aluminum alloy, with the materials and processes used by most of the super pole this surface using the drawing process, the black paint that seem more stable, smooth feel of roof surface, although not mirror treated easily contaminated with fingerprints, but his hand touched it is easy to leave marks. ASUS K73E battery
ENVY. 4 is a 14-inch pole of this, the screen resolution of 1366 x 768. For domestic use, 14-inch size is the most popular size, coupled with this super-extremely equip them with the midrange discrete graphics HD7670M display performance, this ultra-pole is not inferior to the current 4000 -5000 priced mainstream game this.
Sinking the shaft is relatively common shaft design approach that enables the body thinner and lighter design, this shaft stability is relatively good to ASUS K55N Battery. The keyboard above the distribution of more holes of the speaker, but also joined HP's exclusive Beats sound. ASUS K73J battery

Newest LENOVO ThinkPad T430i T530i Battery Review
D surface temperature is normal, due to the back of the outlet, the heat concentrated in the shaft at the outlet near the maximum temperature of 43 ℃. Most all UltraBook notebooks upgrade Ivy Bridge platform, LENOVO ThinkPad T430i processor model Core i7-3517U, we can see through the CPUID testing, the standards of this processor clocked at 1.9GHz, Core frequency can be achieved 2.8GHz, 22nm process technology, power consumption is only 17W. ASUS K73JK battery
Hardware configuration, the get of this LENOVO ThinkPad T430i is equipped with 22nm process technology, Ivy, Bridge, platform, the Intel Core Duo the i7 3517U dual-core low-voltage processor, equipped with Intel HM76 chip group, configure the Sandisk, 256GB the SSD solid state hard drive, as well as single articles 4GB of DDR3 1666MHz speed memory, graphics cards, the models using the latest processor Intel HD 4000 Core Graphics.
Tested, LENOVO ThinkPad T430i Core i7-3517U in the Cinebench scores of thousands, if Sandy Bridge platform, Core i7-2677M processor, the Asus UX21 data contrast, the performance improvement of 39%. ASUS K73S battery
HD3000 Core graphics performance of the previous generation in the game performance is pretty good, if not a gamer or a fanatical enthusiast, that Core Graphics also meet them, this time with the arrival of the Ivy Bridge platform LENOVO ThinkPad T430i Battery, the core graphics upgrade again HD4000 .
LENOVO ThinkPad T430i using the Core i7 processor is still integrated Intel HD Graphics Core 4000 graphics card, through 3DMark Vantage software testing, you can see the E9206 overall score points from the previous generation HD3000 about 19% performance increase. ASUS K73SV battery
We use the SSD Benchmark LENOVO ThinkPad T430i is equipped with 256GB SSD performance test. We can see from the screenshot of the test results below, read and write speeds respectively, 412.89MB / s and 315.15MB / s can be said very quickly, the experience than the average HDD results to highlight some. ASUS N71 (All) battery
Screen of the notebook is like a person's looks like a good display is easy to make a good impression, LENOVO ThinkPad T430i is such a product, IPS Full HD screen and highlight the backlight is very seductive, that this the notebook to get the office, around a lot of editorial colleagues, including colleagues in the display channels were full of praise of the notebook display, although the ultra-high resolution to bring the operating system and web pages the default font is too small, but can not stop notebook showing the effect of love, to mention this problem by adjusting the DPI to resolve. ASUS N71J battery
Back to the look of this ultra-pole of this, I think the S3 is ideal for use as a mobile Internet terminal, the first flexible, quick start, succeed one kg weight, portability approaching the Tablet PC, Moreover, its better compatibility, relative to the tablet and smart phones, more suitable for the temporary creation of glare Guangping can be easily used in a variety of environments. ASUS N71JA battery
Super pole this product with the layout of the mobile Internet, and smart mobile devices to grab the market's determination, but we can look down, the general direction of the handheld device is high-resolution, in the same size more or finer content, ASUS N71JQ battery Throughout the development of the entire PC industry is the same display resolution to a gradual increase in the greater field of vision, but this upgrade is based on the display device dimensions to improve on the basis of the current opportunity in small size on the screen using the high score screen not yet mature, but the courage of the PC industry should be promoted LENOVO ThinkPad T530i Battery , the PC industry in recent years, innovation always tie him down too much, appears to tiptoe passive to meet the laws of the market and consumer preferences. ASUS N71JV battery

ASUS A45D K45D Battery Review
Super pole this higher resolution, this seems to be the thing we should be expected early this year after the release of of The New the iPad, we were surprised to find in this 10-inch flat-panel computer products, actually using a 2048 × 1536 ultra-high resolution, we really see the kind, only to find to worry about before and did not occur, the high-resolution and makes the picture more clear and delicate, but the excessive heat has become of The New iPad. ASUS N71V battery
This super pole gradually fling, someone called for super pole Can this high resolution it? Adopted by the mainstream ultra-pole of this resolution is 1366 × 768, and this resolution to become mainstream already have more than two years time, TVs, projectors, flat, and even mobile phones and other products significantly improve the resolution at the same time notebook (ultra-pole of this) is there should be some action. ASUS N71VG battery
IPS glare mask at ASUS S3 used in addition to the resolution other than to achieve a vertical 178 ° ultra-wide-angle visual perspective, which undoubtedly also to let DELL Inspiron N7520 Battery visually more powerful, then we will UX, 21A and some notebooks. flat compared to see who display better.
Many manufacturers, the second generation of ultra-pole of this, ASUS the released ZENBOOK of Prime, as the first generation of ZENBOOK upgrade ZENBOOK of Prime's experience starting from the visual and intuitive feel to the user to change. ASUS N71VN battery
Appearance the S3 (generation ZENBOOK) and the previous generation of the distinction is not obvious that the two almost identical mold design, just change the color, S3, tungsten gray color top cover and black keyboard to match the overall style is more restrained, and full rigidity. The UX21 is used in the previous generation is a silver-gray keyboard design. ASUS N71YI battery
Configuration performance and functional innovation, ASUS S3 just released Ivy Bridge platform, low-voltage processor, and equipped with more powerful HD4000 Core Graphics, after evaluation, we will its performance test interfaces, two USB ports on this camera body are 3.0 standard. Asus K72 battery
ASUS S3 1920 × 1080 resolution, and loaded on a 11.6-inch screen, a ppi (pixels per inch) reached unprecedented notebook 190, for handheld devices, ppi over 300, our naked eye will not be able to distinguish between the pixels on the screen, grainy will completely disappear, but considering the super pole this use distance than mobile phones and flat-panel hand-held devices is far, so ppi = 190 S3 screen is the same fine surprise, e and even close observation, can not see the pixels particles. Asus K72DR battery
Improve the resolution will bring a greater vision, in Excel, for example, under the conditions of the default view of the ratio of 100%, the vision of full HD 1920 × 1080 resolution S3 resolution than the ordinary 14-inch standard notebook display multi- 46%, which will in the text layout, advertising design and other office users convenience, but the screen is small and somewhat limited in their consumption and comfort to create digital content. Asus K72DY battery
Open the page in the S3 screen width of twice the width of the common web page, some browsers can be two pages side by side, so that the S3 on the same screen to display two full width of the page. Suitable for Web site operators, owners and page design workers.
ASUS UX21 The biggest change to using a Full HD IPS panel LCD screen and 72%, according to official data, this screen that covered the gamut, brightness of 350 lumens, contrast ratio of 800:1. Asus K72F battery
ASUS A45D Battery uses the IPS wide viewing angle 89 ° in the visual perspective to achieve a total of 178 ° left and right sides, the common TN screens are usually less than 90 °. In addition, the IPS in terms of hardness, but also better than TN screen, slightly to press hard on the surface of the screen, it will not water ripple. Asus K72JK battery
ASUS UX21 touchpad with tempered glass steel, you can touch the larger, more scientific design of sensor points, compared with before the touchpad, the ASUS S3 can support up to 20 points touch operation, such as: three task switching bar for the tune on the point, about three fingers sliding switch tasks, for the three point switch to the current task, the two can file selection, dragging, chart zoom and so on, in Windows comes with pictures to view can be used two fingers to rotate, along with fancy transition effects. Asus K72JR battery
Now more and more notebook keyboard backlight, ASUS S3 also upgrades, back-mounted seamless light-emitting sub-Island keyboard keycap bottom and letters revealing the white to night use convenience, users can also be via the Fn + F3/F4 to adjust the keyboard brightness, keyboard backlight brightness adjustment. Asus K72JT battery
ASUS Super Hybrid Engine II technology developed in the UX21, the technology provides a unique Instant on function, can automatically help users to books directly set in deep sleep mode, the day just to close my computer, go to work the next day light press the power button, just two seconds to wake up to use.
Instant On principle, the information and data access in memory when needed directly to data from the memory wake up without having to again after the hard disk. Asus K72JU battery Memory access speed is much faster than hard drives, so you can achieve the effect of 2 seconds to boot. Simply launch the Instant on feature, regardless of standby how long can enjoy anytime, anywhere with the blink of an eye that the use and convenient.
One reboot for about 18 seconds, thanks to the fast SSD solid state drive storage and read speed, super extremely differentiated performance advantages are also reflected here. Ivy Bridge platform super very cooling effect should be a lot of people are concerned about the same 17W power platform processor, Asus K72LN71 battery due to the update process engineering and 3D transistor technology, in theory, a new platform for ultra-pole of this temperature will be reduced, this time we use the FurMark tools laptop in the room temperature about 25 ° under the conditions of continuous high-load running half an hour to test the temperature of the surface with warm gun. Asus N71J battery
The test results show that, in the high load operation of waiting half an hour, ASUS K45D Battery surface temperature of up to 46 ° C, the main high temperature zone is concentrated in the outlet area above the keyboard left close to the screen axis, temperature and on the generation of ultra-very similar to the product, this place from the palm rest farther, does not have any impact on the use of the palm rest temperature of 36 ° C, very cool. Asus N71Ja battery

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How to Store Batteries

The recommended storage temperature for most batteries is 15°C (59°F); the extreme allowable temperature is –40°C to 50°C (–40°C to 122°F) for most chemistries. ASUS A2 battery While lead acid must always be kept at full charge during storage, nickel- and lithium-based chemistries should be stored at around a 40 percent state-of-charge (SoC). This level minimizes age-related capacity loss while keeping the battery in operating condition and allowing self-discharge. ASUS M2 battery
Finding the 40 percent SoC level is difficult because the open circuit voltage (OCV) of batteries does not lend itself well to state-of-charge estimations. For lack of better methods, voltage is nevertheless used as a rough fuel gauge indicator. The SoC of Li-ion is roughly 50 percent at 3.80V/cell and 40 percent at 3.75V/cell. Allow Li-ion to rest 90 minutes after charge or discharge before taking the voltage reading to get equilibrium. ASUS M3 battery
SoC on nickel-based batteries is especially difficult to measure. A flat discharge curve, agitation after charge and discharge, and voltage change on temperature contribute to the fluctuations. Since no other estimation tool exists that is practical, and the charge level for storage is not all too critical for this chemistry, simply apply some charge if the battery is empty, and then make sure that the battery is kept in a cool and dry storage. ASUS M5 battery
Storage will always cause batteries to age. Low temperature and partial SoC only slow the effect. Table 1 illustrates the recoverable capacity of lithium- and nickel-based batteries at various temperatures and charge levels over one year. The recovered capacity is defined as the available battery capacity after storage with a full charge.ASUS M6 battery

Table 1: Estimated recoverable capacity when storing a battery for one year
Elevated temperature hastens permanent capacity loss. Depending on battery type, lithium-ion is also sensitive to charge levels.
Lithium-ion batteries are often exposed to unfavorable temperatures, and these include leaving a cell phone in the hot sun or operating a laptop on the power grid. ASUS S5 battery Elevated temperature and allowing the battery to sit at the maximum charge voltage for expended periods of time explains the shorter than expected battery life. Elevated temperature and excessive overcharge also stresses lead and nickel-based batteries. All batteries must have the ability to relax after charged, even when kept on float or trickle charge. ASUS W3V battery
Nickel-metal-hydride can be stored for about three years. The capacity drop that occurs during storage can partially be reversed with priming. Nickel-cadmium stores well, even if the terminal voltage falls to zero volts. Field tests done by the US Air Force revealed that NiCd stored for five years still performed well after priming cycles. It is believed that priming becomes necessary if the voltage drops below 1V/cell. Primary alkaline and lithium batteries can be stored for up to 10 years with minimal capacity loss. ASUS W5V battery
You can store a sealed lead acid battery for up to two years. Since all batteries gradually self-discharge over time, it is important to check the voltage and/or specific gravity, and then apply a charge when the battery falls to 70 percent state-of-charge. This is typically the case at 2.07V/cell or 12.42V for a 12V pack. (The specific gravity at 70 percent charge is roughly 1.218.) ASUS V6V battery Some lead acid batteries may have different readings and it is best to check the manufacturer's instruction manual. Low charge induces sulfation, an oxidation layer on the negative plate that inhibits current flow. Topping charge and/or cycling may restore some of the capacity losses in the early stages of sulfation.
Sulfation may prevent charging small sealed lead acid cells, such as the Cyclone by Hawker, after prolonged storage. ASUS Z3A battery If seemingly inactive, these batteries can often be reactivated by applying a higher than normal voltage. At first, the cell voltage under charge may go up to 5V and absorb only a small amount of current. Within two hours or so, the charging current converts the large sulfate crystals into active material, the cell resistance drops and the charge voltage gradually normalizes, and at a voltage of 2.10–2.40V the cell is able to accept a normal charge. ASUS Z33A battery To prevent damage, set the current limit to a very low level. Do not attempt to perform this service if the power supply does not allow setting current limiting. Read about Charging with a Power Supply.
Simple Guidelines for Storing Batteries ASUS Z71V battery

Primary batteries store well. Alkaline and primary lithium batteries can be stored for 10 years with moderate loss capacity.

Remove battery from the equipment and store in a dry and cool place.

Avoid freezing. Batteries freeze more easily if in discharged state. ASUS A1 battery

Charge lead acid before storing and monitor the voltage or specific gravity frequently; apply a boost if below 2.10V/cell or an SG below 1.225.

Nickel-based batteries can be stored for five years and longer, even at zero voltage; prime before use.

Lithium-ion must be stored in a charged state, ideally 40 percent. This assures that the battery will not drop below 2.50V/cell with self-discharge and fall asleep. ASUS F7 battery

Discard Li-ion if the voltage has stayed below 2.00/V/cell for more than a week.
Caution:
When charging an SLA with over-voltage, current limiting must be applied to protect the battery. Always set the current limit to the lowest practical setting and observe the battery voltage and temperature during charge. Asus F7000 battery
In case of rupture, leaking electrolyte or any other cause of exposure to the electrolyte, flush with water immediately. If eye exposure occurs, flush with water for 15 minutes and consult a physician immediately.
Wear approved gloves when touching electrolyte, lead and cadmium. On exposure to skin, flush with water immediately. Asus F74 battery

Can your laptop battery be overcharged?
Most laptops today use lithium Ion (Li-ion) batteries. Overcharging Li-ion batteries is not a problem and does not affect the battery life span. These batteries can be charged 300 to 500 times, and they have an internal circuit to stop the charging process at full charge. Asus F7400 battery The control system prevents overcharging, which can cause the lithium ion battery to overheat and potentially burn. This is why the Li-ion batteries are more expensive. The only way for the Li-ion battery to overcharge is if the charging system malfunctions, and then the battery will heat up while in the charger. Asus F7400B battery If you don't plan to use your laptop for long period of time, you can extend the life of your lithium ion laptop battery by storing it with a 50 percent charge. A fully discharged battery left for a long period of time will lose its charging capacity. Fully charged batteries discharge when they are left unused, and will lose effectiveness. Asus F74B battery This is why it is recommended to discharge a Li-ion battery until it is almost out before shutting down. Running a Li-ion battery down completely will diminish capacity. Keep the battery in a cool place and do not store your computer for a long period of time while it is fully charged. Asus F7B battery
Older laptops use Nickel-cadmium (Ni-Cd) and Nickel Metal Hydride (Ni-MH) batteries. They require more maintenance than Lithium Ion batteries. They must be fully discharged and then fully recharged so that they don't lose battery life. These batteries can be overcharged only if they go through too many cycles of charging and discharging, which reduces their effectiveness and capacity. Asus L7 battery It is better to charge all batteries fully before use; then use on battery power until the optimum level for each battery type is reached, before recharging.

How to Keep Your Dell Laptop From Overheating
In order to provide you with a compact computer, Dell manufacturers design laptops with all the internal components placed closely together. Asus L7000 battery Because of this crowding, Dell laptops have a tendency to overheat faster than desktop computers. There are a number of interior devices to help counteract the overheating, such as fans and heat pipes. But after a long session on the laptop, it will eventually heat up . Asus L7000B battery There are tips and tools that you can use to keep your laptop cool. Read the points listed below and learn about how to keep your Dell laptop from overheating.
Laptop Maintenance There are several devices in your Dell laptop that work to prevent overheating. Heat sinks, air vents and fans are all installed within the notebook to dissipate hot air and cool off the system when it's operating for extended periods of time. Asus L7000C battery If you find that your laptop is overheating too quickly or getting excessively hot, you may want to take your computer in for maintenance. Have a professional inspect the cooling systems. You may just need a cleaning to clear away any dust or debris that could be blocking proper airflow. Alternatively, you may require a repair or replacement to one of your cooling system parts . Asus L7000D battery
Cooling Chill Mat Dell has created an accessory to prevent your laptop from overheating. The Cooling Chill Mat is a part that you can attach to the bottom of your computer. The mat is powered through your computer's USB port so no additional heat is produced. With the help of two fans, the mat keeps your computer's interior from heat damage and your lap from getting hot . Asus L7000E battery
BIOS Update Check on the Dell Web site to see if your computer's model has a BIOS update available. Often simply updating your computer's BIOS with a newer version will improve the notebook's fan efficiency. Be aware that installing the BIOS upgrade may be difficult and if you're not computer savvy, you may want professional help with installing the update Asus L7000G battery .

How to Know when Your Computer Battery is Dead
All personal computers have a small battery on the motherboard that provides power to the Complementary Metal Oxide Semiconductor (CMOS) chip, hence the name CMOS battery. The chip has the information about all the system's configuration, such as the hard disk, date and time, etc. It provides power even when the computer is off and allows the CMOS to save all the settings Asus L7000H battery. You can expect the CMOS battery to last for up to five years. The more your computer is used, the longer the battery will last. How do you know that your CMOS battery is dying? Here are some tell-tale signs that your battery is dying:
Invalid configuration will appear on your screen.
Run Setup appears on your screen.
Press F1 to continue appears on your screen.
Invalid drive specification appears on the screen after you've pressed F1.
Clock Error or Clock Message appears on your screen.
The clock on the computer loses time.
The computer is constantly showing the wrong date. Asus L7200 battery
Should you experience any of these symptoms, it's time to change the battery in your computer. If you don't change the battery, the battery will die. Your battery is dead when your screen is blank and you have thus lost your CMOS memory .

6 Easy Ways to Keep Your Computer Cool Without Using Electricity
Keeping your computer cool is important to its well-being and longevity. I only mention this, because the heat is on, not in some cheesy Glenn Frey way. Asus L7300 battery It's actually getting hotter as the Earth rotates us into summer.
As the temperature rises, your computer might be feeling the sting. Maybe you can hear its little fan chugging away. Your computer might even be hot to the touch. How can we cool our computers without adding more strain to our often overtaxed energy grid?
5 Easy Ways to Keep Your Computer Cool Without Using Electricity Asus L7B battery
1. Clean Your Computer
Your fan will work better if it is clean. It's just a good idea to clean your computer regularly with a reusable brush or a rag lightly dampened by rubbing alcohol. It'll extend the life of your machine. Stay away from canned air. Asus L7C battery
2. Cut the Clutter
If you have a messy desk, I won't judge you, but you need to clear all those papers and envelopes away from your from your computer's exhaust port.
3. Relocate Your Computer Asus L7D battery
Move your computer if it is in direct sunlight. Also, if your computer is up against a wall, move it a few inches away from the wall to allow for some air flow.
4. Keep Furry Pets Out of the Office
Pet hair can get into your computer and clog up the fan. Keep pets out of your office, turtles are the obvious exception. Asus L7E battery
5. Don't Remove the Case
Some people remove the case in order to make the computer cooler. It doesn't seem to have much of an effect unless you are running a fan over the open case.

Choose an Energy-Efficient Power Supply
While power-supply units (PSUs) have not traditionally been power savers, a 2006 white paper by two Google data-center designers noted that redesigning industry-standard PSUs could yield potentially huge energy savings. Asus L7G battery Installing redesigned power supplies in 100 million desktop PCs that run eight hours a day, for instance, would save 40 billion kilowatt-hours over three years, according to the paper-that's more than $5 billion at California's energy rates.
While Google's efficiency effort is theoretical at best, an initiative launched by utility companies and energy-efficiency organizations has resulted in real-world energy-saving PSUs. Asus L7H battery Known as the 80 Plus program, the voluntary certification program aims to make power supplies at least 80 percent energy-efficient. Many PSUs currently max out at only 60 percent, a result of their inefficiency in converting high-voltage AC power from the wall socket to low-voltage DC power for your PC. ASUS L1 battery And because these energy-efficient PSUs aren't overindulging on heat-generating energy, they can also eliminate the need for a fan, resulting in a quieter, more-reliable PC. Roughly 70 designs from almost 20 manufacturers now bear the 80 Plus label. A typical 80 Plus-certified option is the EarthWatts PSU from Antec, which is available in three models: 380-watt, 430-watt, and 500-watt. It features a universal input (which accepts line voltages from 100 to 240 volts AC), Serial ATA and PCI Express power connectors, and compliance with the ATX 12V standard. The built-in 80mm cooling fan is rated for low-noise operation. ASUS L7 battery
Another alternative is Cosair's VX450W and VX550W, both of which support Energy Star 4.0 standards and are rated for 80 percent or more energy efficiency under a wide variety of loading conditions. They're available in 450-watt and 550-watt models.

Save Energy Effortlessly with SetPower for Personalized PC Power Management ASUS L8 battery
There are loads of ways to make your computer greener, and one of the most important is managing its energy consumption when not in use. Ideally, your computer would be turned off whenever you aren't using it, but practically, that just doesn't happen. We often don't want to shut down our computer when leaving for a meeting that will last a few hours, or we get distracted and leave it on over night. ASUS M1 battery There are quite a few options for downloads that turn your PC into an energy sipper, but typically they aren't detailed in their setting options. If you'd like a power management system that is specific to your schedule, there's a new solution that could help you out.
Personalize Your PC Power Management ASUS M5N battery
SetPower is a free download that lets you specify when your computer should be awake or asleep. For instance, if you know that each day you're going to be away from it from 3 pm to 6 pm, you can program it to fall asleep during those hours. Additionally, you can program a laptop to go into sleep mode differently depending on if it is plugged in or running on battery power. ASUS M8 battery
Save Energy, Save Green
The company states that it can save you as much as $10 a month compared to if you leave the computer running all the time. That's a claim you can take with a grain of salt because, faithful Planet Green reader, we're sure you don't leave your computer running overnight! So your savings will be smaller than that, but you'll still be saving energy and carbon emissions. ASUS S1 battery

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How to Extend Mac Laptop Battery Life
Apple uses standard Lithium-ion laptop batteries in its current lineup of consumer and professional laptops. Acer Aspire 5253G battery Mac OS X Lion was designed to save time with its Mission Control view, iOS-like Launchpad and ability to run several apps at full screen. Apple put a lot of thought into how the hardware and software work together to maximize user productivity and minimize extra work. Acer Aspire 5333 battery With these battery-saving mathod, you won't have to worry as much about your Mac running out of juice when you need it most.The five steps that you will finish it.

1. Turn Off Bluetooth and Wi-Fi.

Disabling your notebook's wireless radios is one surefire way to eke out more juice. Acer Aspire 5336 battery While turning off Wi-Fi may not be practical in every situation-especially if you need to access the Internet often-it will give you more endurance if you're using your laptop to watch a movie on an airplane. Acer Aspire 5349 battery

2. Adjust Screen Brightness.

At full brightness, the 13-inch MacBook Air's screen measures an average of 285 lux. Acer Aspire 5350 battery At 40-percent brightness (6 bars), it's just 29 lux, but still very viewable. And brightness eats power.

a. To lower screen brightness:
Tap F1 repeatedly until the brightness is at a level just tolerable enough to view comfortably. Acer Aspire 5551 battery
b. Alternatively:
Open System Preferences > Displays.
Adjust the Brightness slider to the level you're most comfortable with.

3. Tweak Energy Saver preferences. Acer Aspire 5551-2013 battery

Changing these settings will cause your Mac to power down energy-consuming components-such as the screen and the hard drive-sooner during periods of inactivity.

4. Quit runaway applications. Acer Aspire 5551-2036 battery

Occasionally, an app will consume an inordinate amount of system resources even when not in use. Not only does this impact your notebook's performance, but it also seriously degrades battery life.

Open the Applications folder > Utilities folder. Acer Aspire 5551-2805 battery
Click Activity Monitor.
Select the CPU tab.
Select All Processes in the drop-down menu.
Sort the apps by CPU percentage.
Look for any app that is consuming a large percentage, such as more than 70 percent.
Select that app and press the Quit Process icon. Acer Aspire 5551-4200 battery

5. Turn off backlit keyboard.

While it's a great feature, the backlit keyboard on Macs can shave precious minutes off your runtime. Acer Aspire 5551-4937 battery

If you're pushing up the brightness level or you want to do something more intense like crunching a video, viewing an HD movie, or playing a game, you can expect less endurance than we encountered.

Tips on How to Get A Discount on Laptop Battery Acer Aspire 5551-P323G32Mnsk battery

You actually don't have to worry in case you have got no cash to spend on the battery on your laptop. That's as a result of, you possibly can simply shop for a discount laptop battery lately through innumerable online stores. If you happen to're lucky enough, you can even expect better deals on other related products like a printer toner! So all it's a must to do is find a place that may enable you to find these accessories. Acer Aspire 5551G battery

Discounted items don't essentially mean they are going to be cheaper in quality. This is the mistake most individuals generally do while looking for products like batteries and they end up paying high price for a product they would have gotten for a lot cheaper, provided they did some research on the internet. Acer Aspire 5551G -4280 battery It has been seen that if you buy a battery for your laptop offline, they should cost you much more than when they were purchased from an online store. Similar is the case with other products

Acer Aspire 5551G -4591 battery A lot of your money can be saved if you get a battery from an online store and this saving can be used to buy other things if you like! Extreme competition among different stores is one of the reasons why you can get these products at a low price. Acer Aspire 5551G-P324G32Mn battery Another reason is that these online stores manage their business with very low overhead cost and hence they manage to pass on this advantage to their customers. It has to be understood by the customers that lower priced items can perform just as good as the ones that are purchased with a full amount and hence they shouldn't be discarded just like that. Acer Aspire 5552 battery

The battery is an essential component for your laptop and hence enough consideration has to be taken before buying them. If you're able to find a reliable online store that sells most of its products at discounted rates, get their website bookmarked. Acer Aspire 5552G battery This will help you when you want to visit them regularly. Instead of buying a large number of products at a time, concentrate on fewer products when you deal with them for the first time. You can start buying products in large quantities once you're sure that the quality of products is good. Acer Aspire 5560 battery

Have the laptop battery number ready when you're shopping for it online. With this information at your finger tips, it should be a lot easier to find one at the online store. Acer Aspire 5560 V3 battery Once you're done with the online shopping, make it a point to visit another store at your place and compare both the prices. You'll certainly be surprised to see a lot of difference!

How to Have a Longer Laptop Battery Life Acer Aspire 5560G battery

We always know that laptop battery life is so important that we should try our best to get the longest laptop battery life. The battery is what gives your laptop the convenience of being portable. These batteries can be recharged over and over again. Acer Aspire 5733 battery But many users do not know how to obtain the best battery life. And the following are some tips and tricks about how to prolong laptop battery life.

Most laptops come with power management applications with battery maintenance functions. Acer Aspire 5733Z battery When running on extended AC mode, you can select "long life" option for your battery and it will charge to about 80% capacity only. Before travelling, apply the "full charge" option to bring your battery to 100% capacity. Acer Aspire 5736 battery

We should know some basic information about laptop battery. Laptop batteries should be charged only when they fall below 80% in its capacity. Acer Aspire 5736G battery These are usually manufactured for a long lifetime and can be used at least for 500 to 1200 cycles. The use of the laptop batteries can be optimized by handling them carefully and with caution. Acer Aspire 5736Z battery These batteries should be conditioned on a regular basis. And that should be at least once in a month. While charging the battery, the laptop should be turned off when possible. If kept on, the batteries won't acquire the required charging power. Acer Aspire 5736ZG battery

Do not leave a charged battery dormant for long periods of time. Too usually, folks would use their laptops while plugged in a power source. Acer Aspire 5741 battery While this is fairly safe, batteries that don't get used shall be simply as sickly as batteries which are used incorrectly. Like our bodies, batteries need to be exercised to remain robust and healthy. Moreover, keeping a fully charged battery at elevated temperatures affects the performance of the battery. Acer Aspire 5741-332G25Mn battery

Let us have a look at how a laptop battery works. The performance of the battery is determined by its weight, cycle period and rate of discharge. Acer Aspire 5741-333G32Mn battery There are three types of batteries available, and some are costly while others in comparison are quite reasonable. These batteries will have a long life if properly stored and used. Acer Aspire 5741-334G32Mn battery Hotter temperatures will have an effect on the battery as opposed to keeping the battery at room temperature. However, the terms for storage and usage of the battery vary from one brand to another. The newly manufactured batteries have certain rules for charging them. Acer Aspire 5741-334G50Mn battery

There are some tips about how to prolong laptop battery life. Acer Aspire 5741-3404 battery When you wish to see a movie or listen to music on your laptop, it is better to write the CD or DVD onto your hard disc. Doing this will not require as much power as that you just play the CD or DVD on the laptop. In turn, this will help extend the overall life of the battery. A few cautions like these can help the battery to last a long time. Acer Aspire 5741-3541 battery

11 Ways to Increase Your Windows 7 Laptop Battery Life

Watching the life drain from your laptop when you're on the move is stressful. Acer Aspire 5741-433G32Mn battery Sure, there are extended and slice batteries for a variety of machines, and portable laptop battery packs are available from companies such as Duracell and Lind Electronics. But those options can mean carrying more bulk in a bag already bogged down with cords, files and accessories. One surefire way to preserve the battery you do have is to follow these 11 tips. Acer Aspire 5741-434G50Mn battery

1. Lower your screen brightness.

Your screen backlight uses the most power of any component in your notebook, so you can save a lot of juice by turning it down to the lowest acceptable level. Acer Aspire 5741-5698 battery You can manually raise and lower the brightness in increments of 10 percent by hitting the appropriate key combination for your laptop (example: Fn + left/right arrows on the Acer Aspire TimelineX series), but we recommend changing the brightness in your power profile so it lowers automatically every time you unplug. Acer Aspire 5741-5763 battery

To lower the brightness level in your power profile:

* Select Power Options from the control panel.
* Click Change Plan Settings next to your current power plan.
* Select "Change advanced power settings." Acer Aspire 5741G battery
* Expand Display, then Display brightness.
* Enter a brightness percentage for On Battery, then Click OK.
* Experiment with different brightness levels to determine which is the lowest you can tolerate.

2. Prevent scheduled tasks from running on battery power. Acer Aspire 5741G-332G50Mn battery

Your virus scanner and disk defragmenter, along with auto updates from the likes of Apple and Google, are scheduled to run themselves on a regular basis-often without your knowledge or consent. Set these tasks to run only on AC power so they don't eat up precious juice running your hard drive, CPU and wireless while you're unplugged. Acer Aspire 5741G-333G32Bn battery

* Select Administrative Tools > Task Scheduler in the Control Panel.
* Select Task Scheduler (Local) in the left window pane.
* Go through each active task that has a future date in the Next Run Time column and do the following: Acer Aspire 5741G-334G50Mn battery
o Double-click the task.
o Select the Conditions tab.
o Toggle on the first two power options: "Start the task only if the computer is on AC power" and "Stop if the computer switches to battery power" if they are not already checked.
o Click the back button to return to the list of active tasks. Acer Aspire 5741G-334G64Mn battery

3. Turn off backlit keyboards.

If your notebook has a backlit keyboard, it will certainly help you see keys in a dark room, but it's also sucking juice out of your battery. Acer Aspire 5741G-434G64Bn battery You'll save some power by turning off that light. Every notebook has its own way of enabling or disabling its keyboard backlight, but the method usually involves hitting a Function key on the top row of the keyboard. Acer Aspire 5741G-5452G50Mnck battery

4. Unplug all USB devices and remove all discs.

Every USB peripheral attached to your notebook is eating up power just by registering itself with the operating system. Acer Aspire 5741G-5452G50Mnkk battery By the same token, CDs, DVDs and Blu-rays can drain battery life, even when they're just sitting idle in your optical drive. Remove any discs along with USB keys, card readers, modems or other peripherals you don't need while on battery power. Acer Aspire 5741G-5452G50Mnsk battery

5. Turn on High-Contrast mode.

The LED-backlit screens used on most modern notebooks expend less energy displaying black pixels than those showing colors. Acer Aspire 5741Z battery Setting your computer to show white and yellow text on a black background can improve battery life and even make text more readable when sunlight is hitting your screen.

To enable High-Contrast mode in Windows 7, simply hit the key combination Left Shift + Left Alt + Print Screen and click Yes when asked to confirm. Acer Aspire 5741ZG battery You can turn off High-Contrast mode by hitting the same combo.

High-Contrast mode will affect your desktop and most Windows programs, including the latest versions of Internet Explorer and Firefox. However, if you use the Chrome browser, you will need to install the Change Colors extension, which is available for free from the Chrome Web Store. Acer Aspire 5742 battery Once the extension is installed, it will show an icon in the right side of your address bar. Click that icon and select "Apply override on all pages" to enable high-contrast mode.

6. Close messaging software and apps that ping the Internet in the background. Acer Aspire 5742G battery

While you're surfing the Web, checking email or watching a movie, messaging apps such as Google Talk and Skype are hitting the Internet constantly, just to see which of your contacts are online and whether you've received any messages. Acer Aspire 5742Z battery Automatic updating apps from the likes of Adobe, Apple and Google may also be pinging the Internet to see if there are updates to your copies of Adobe Reader, Chrome browser or iTunes. To stop these silent power vampires before they start, prevent them from loading at boot time.

To see and disable programs from starting when your computer starts:

* Type msconfig into the Start Menu text field, and click msconfig.
* Select the Startup tab. Acer Aspire 5742ZG battery
* Uncheck messaging programs such as AOL Instant Messenger, Gtalk and Skype. You can always launch them manually if you want to use them.
* Uncheck autoupdaters such as Adobe Update, Apple Update, Google Update and Java Autoupdater.
* Click OK. Acer Aspire 5750 batteryAcer Aspire 5750 battery

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Take - 1 Laptop Motherboard Repair And Notebook Power Connector Faults

Power connector failure

1. Wiggling the facility connector may cause the charging light to attend on briefly or select when the connector is wedged at an angle.
2. The charging light may not explicate no matter what attribute the connector is delighted to. Asus A42-U53 battery
3. The battery may reach when the laptop is turned on but strike ok when it off.
4. A burning redolence may be noticed when the laptop is powered on or when charging from the mains.
5. You may notice that the power connector is unstable when you withdraw the plug. DELL XPS L501x battery

The bent connector used on hugely laptops is of very poor design since the strain of insertion and movement is involved by a few solder joints on the connector bearings it joins the motherboard, thus oversight occurs becoming to metal tiredness of the solder joints. Procure failure may not occur this is why wiggling the connector can often set up the laptop to start charging again. However, original can equally initiate the connection to heat maturation and burn. Acer TravelMate 6293 battery

Take-1 does not recurrently use the manufacturer's original power connector for repairs as concrete will regularly blink again predominance 1 - 6 months. We gravy train netted power connector. Due to you can consult from the express right looks nearly the calm as the individualistic except it is secured firmly to the laptop case by a nut and internally links to the motherboard by flexible cables. Therefore, it does not beginning how you wiggle the connector incarnate will not fracture where it connects to the motherboard. Asus G74 battery Take-1 can repeatedly advance the motherboard if it has been burnt around the power connector, then doesn't onus if live failed with an ablaze smell.

Sometimes it is needful to replace the power plug on the perfect of the know-how confer. We commit repeatedly do this free when we replace the connector.
Power connector replacement looks deceptively wieldy from the pictures, but it is a skilled job requiring experience and care, since there is terrifically little room inside the laptop; this is definitely NOT a DIY job. HP 484170-001

Take-1 can usually replace the capability socket in your laptop within 24hrs, but if it's urgent we authority usually offer a same future service, but you committal phone first.

Laptop motherboard repairs

Laptop motherboard repairs are not easy! The image on the left shows a typical motherboard, there is a 5p coin in the middle to consign some expectation of size. ASUS N51VF battery The image below is an spread of the village near the coin. If you look carefully you will see little oblong blocks - these are singular electronic components that wink at on a motherboard. There are literally thousands on both sides of the motherboard. Additionally, there are many chips and. Any one or more components can tune out on a laptop motherboard causing it to malfunction.

We have extremely experience in repairing laptop motherboards and trust usually identify further replace the lame component. DELL XPS L701x battery
It is considerably cheaper to repair a laptop motherboard rather than displace it with new amount. We impel NO onslaught for giving you a repair quotation even though this involves removing the motherboard and locating the fault.

Motherboard repair times are typically 3 - 4 days depending on component availability Laptop Motherboard Repairs. Lenovo 42T4799 Some motherboards cannot serve as repaired particularly if extract has been spilt and the laptop has been rotten on! If now any look at the motherboard cannot be repaired, we will quote for a replacement unit and let you decide.
Beware of repairers offering very gaudy 'new' motherboard replacements since they may substitute using old pullouts from scrapped laptops which consign familiar be prone to the same fault that you already have!

Motherboard repair times are typically 3 - 4 days depending on component availability Laptop Motherboard Repairs. Acer Aspire 5336 battery

Dim Your Laptop Display To Save Power
No question battery life continues to be an extremely important part of laptops and mobile devices. The longer a battery lasts away from a power source, the more productive you can be. Better battery life might enable you to answer a few more critical e-mails, or allow your kids to finish that DVD on the long plane ride home. Asus G74SX battery

Battery life depends on many factors-the components used in the system, the power scheme settings, the kind of work being done and the physical size of the battery itself are just some examples. Lenovo G560 battery

There's also a number of ways to test battery life. From use case tests to industry benchmarks, battery test results can vary greatly. In the same way that two drivers will usually get different gas mileage driving the same car depending on how they drive, the same is true for testing methodology used by tech reviewers when evaluating battery performance. Testing methodology and user activity are two big reasons for this variance. LENOVO 43R9257

Looking at battery life in recent XPS 13 Ultrabook reviews shows this variation firsthand. Some reviews measure the battery life at around six and a half hours while others show it as little as three hours, thirteen minutes. In general usage, many of our XPS 13 customers are reporting six and a half hours or more. In our battery testing, that's what you should expect in general use. ASUS G50VM-X1 battery

Whether we're talking about the XPS 13 or any other Dell laptop, there are things you can do to preserve battery power. Adjusting the Windows Power Management settings is one way you can do it. Here's some specific tips: Samsung R780 battery

1. Select the Power Saver power scheme (vs. "Dell") by clicking on the battery icon in the system tray in the lower right corner. Power Saver is more aggressive than the "Dell" profile setting about reducing power draw. It's worth pointing out here that some tech reviewers turn OFF power management during battery testing which results in significantly shorter battery life. Both the Power Saver and "Dell" plans were developed by Dell in order to provide more flexibility. ASUS N53JF battery

2. Dim your display when possible. The XPS 13's bright 300-nit display is the single largest power draw on the system. If the environment allows for it, dim the display by tapping the FN+F4 key combination - this will help extend battery life.

3. In some circumstances, consider turning off wireless, by tapping the FN+F2 key combination (turn it back on the same way). Lenovo ThinkPad T410s battery

4. Also keep in mind some activities such as CPU-intensive tasks like video encoding, streaming video, and playing games will shorten the battery run time. A good example of this is Hot Hardware's review of the XPS 13. Note the disparity between the Battery Eater Pro test, 104 minutes - with all power management turned off- and the web browsing only test at 415 minutes, which takes advantage of our custom power management settings. Toshiba Satellite P505-S8980 battery

A little bonus tip: Pressing Win+X (Win = the Windows key) will bring up the Windows Mobility Center. This concise dashboard brings much of this together, giving you access to several of these settings at once. Using it, you can easily choose a power profile, adjust the screen brightness, enable or disable the wireless card and more.

Get Laptop And DC Power Socket Repair Services In London Toshiba PABAS069

Laptops have become very important part of our life. We carry our data and internet through it. Though laptop is very useful but it is a very delicate device. It can easily get damaged as the result of a small accident. The part most easily and usually damaged is the DC power socket. When this problem arises the saddest thing is that you are immediately informed that this problem cannot be solved. This is the real time when you need us. HP ProBook 5310m battery

We are excellent provider of laptop repair services so that you laptops remain always at work. We are specialized in DC power socket repair. We have for you the full range of laptop DC power jacks. We strive hard to provide our valued customers the best services in the area. Foe your connivance and to provide you the quickest service we have stocked the necessary laptop parts Laptop Motherboard Repair Service. Acer AS07B41 battery

We are very proud of our technical team. We have developed a team based on quality and professionalism. Our technical is capable of repairing DC power sockets of laptops of all kinds and models. They can repair wobbly sockets, sockets with busted centre pins, and the most difficult dc jacks that have totally broken down. Compaq Presario CQ41 battery We have devoted and skillful technicians specially trained for fixing DC Power jacks for laptop computers. We believe only in high quality and guarantee you that only use high quality DC jacks for all repairs and replacement services. We assure you that we are able to fix all the brands including DELL, TOSIBA, ACER and others any kind of Laptop DC Power Jack trouble in an expert way. DELL Alienware M17x R3 Series battery

We are at your service 24/7. You can contact us through phone or internet. We have a user friendly website where you can easily discuss your problem. When you reach us be sure to hear from us in next 24 hours. Our highly professional technician is at your door step to fix your laptop. We are very cost effective. Acer UM09E31 We also have a crystal clear policy of no fix no charges. We also offer free checkups no matter you use our services or not. Get in touch with us now for your complete DC power socket repair, DC power input socket repair or any kind of laptop repair services. When you have contacted us we claim that you, your laptop and money all are in safe and expert hands. HP ProBook 5310m battery

We believe only in high quality and guarantee you that only use high quality DC jacks for all repairs and replacement services. We assure you that we are able to fix all the brands including DELL, TOSIBA, ACER and others any kind of Laptop DC Power Jack trouble in an expert way. ASUS U43F battery

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The Facts about Laptop Batteries

A laptop battery is what makes your laptop run. Acer AS10D71 battery Without it, you won't be able to use your laptop unless it is plugged-in directly to a wall outlet. Think of the battery like the gasoline that fuels your car. These days, batteries are made of lithium ion and have an average power of around 4 hours. Acer AS10D73 Unlike gasoline though, your laptop battery would degrade over the long run. Why does this happen? There are two facts that affect this; one is that notebook batteries today last for an average of 300 recharges, and second these batteries have a lifespan of 3 years. If you go over these limits then your battery would not operate at its peak performance. It would be time then to get a replacement battery. Acer AS10D75

To make the most out of your notebook battery, here are some tips on how to extend its life. What I did to extend the life of my Dell D620 battery and my IBM Thinkpad T60 battery used on both of my laptops is that I made sure to use them efficiently. Acer BT.00603.111 First, since we are limited to an average of 300 charges, when you do a recharge make sure to do it when your battery is nearly empty so as to do a complete charge. If you charge your battery when it is still half full then you are wasting the extra power in it while cutting back on its lifetime. The same would go if you have a Latitude D620 battery, Inspiron 6000 battery, Dell 6000 battery, Dell 6400 battery or a KD476. Acer BT.00603.117

Next, try to minimize using your hardware. Examples of these are not to turn your LCD to its maximum brightness level and running only important programs when computing on battery. The more programs you open the more power your CPU would have to draw from the battery. Acer BT.00603.124 Also, try to cut back on some unimportant hardware usage. If you aren't using your WiFi try to turn it off. If you want to listen to music from a disk, then create a backup of the record and store in your hard drive. So the next time you play your music, it will be directly from the hard drive and not from a CD or DVR ROM which cuts battery lifespan real quick. Acer BT.00604.049

Even after trying to squeeze extra life on your notebook battery there will come a time when you really will have to replace it. If the original battery isn't available anymore then a replacement battery is a good option. These batteries are easy to find, just search the internet for any online store that caters replacement batteries. Acer BT.00605.062

Make Your Laptop Battery Last Longer: 3 Things to Know

Does your laptop battery give out a lot sooner than it used to? Are you lucky to get an hour or two of work done before you need to start searching for an AC outlet? Sounds like it's time to think about replacing the battery. Acer BT.00605.065
Get reader for sticker shock: laptop batteries are expensive. Prices vary from one model to another, but it's not uncommon for new power packs to sell for $100 or more. I've seen some as high as $150. When you consider that brand-new laptops now sell for as low as $300, that can be a tough pill to swallow. Acer BT.00606.008

Whether you're already in the market for a replacement battery or just concerned about the inevitable day when you will be, here are three things you should know:

1. Most laptop batteries start to fail in 1-2 years. This varies depending on your usage, of course, but the average laptop battery is good for around 400 recharges (a.k.a. cycles). After that, it starts to lose its capacity to hold a charge. Acer BT.00607.125

That's why the battery that once gave you, say, 3-4 hours' worth of runtime now peters out after just 1-2 hours. And after a few years, you might be lucky to get an even an hour.

2. You can extend the life of your current battery. If you use your laptop as your primary desktop PC, you may be wasting battery cycles by leaving it plugged in all the time. Acer BT.00607.126 The solution: pop the battery out until you actually need to go somewhere with your laptop. As long as the latter is plugged into an AC outlet, it doesn't actually need the battery.

Trust me on this: I've seen fairly new batteries that could barely last half an hour, even though the laptop rarely went anywhere. When in doubt, pop it out.

3. Investigate third-party alternatives. When you do end up needing a replacement battery, you don't necessarily have to buy one from the laptop manufacturer--paying top dollar in the process. Acer BT.00607.127

Instead, search the Web for the laptop make/model and "battery" to see if there are less-expensive third-party options. If your system is a popular model, there almost certainly will be.

Also, be sure to check out Dr. Battery's Advanced Pro Series. These replacement batteries--available for a huge range of laptop models--promise 800 recharge cycles (meaning they should last twice as long as your current battery) and come with a two-year warranty. Plus, they're priced fairly competitively at $88 and up. Acer BT.00607.130

By the way, you should always, always, always recycle old laptop batteries. Stores like Best Buy, Lowe's, and Staples have bins or kiosks where you can drop them off.

Okay, your turn: Have you shopped for a replacement laptop battery? If so, how much did you pay? Were you able to find any cheaper alternatives?

Pick Replacement Or Oem Laptop Battery For Laptops Acer LC.BTP00.123

You can save a lot money if you buy a replacement laptop battery immediately from the battery maker; however, not everyone knows where to discover the manufacturer. Furthermore, you can find different laptop battery shops on the internet, and they offer both OEM and replacement batteries at cheap prices.

This is correct of both physical stores and online websites that sell notebook computer batteries. However if you tend to be a value consumer, you will soon understand that universal batteries will provide you the exact same level of overall performance at a substantial cost savings. Acer 934t2078f battery Additionally, you might be able to boost your laptop's operating time by improving your laptop electric battery and choosing one with a higher milliamp rating in the generic equivalent. These higher total capacity generic batteries usually cost a lot less than the OEM's standard capacity battery power. Acer as10d5e

Common laptop batteries are generated at the same manufacturing plants that initially created the laptop battery for the computer producer; batteries are simply an out-sourced item for the computer maker. However these batteries may also be created at facilities whose requirements are not as great as the primary plant's and the only way to make sure that you have purchased a quality battery is to check the reputation of the supplier or the retailer, ensure that they provide a liberal warrantee and check the battery by charging it in your computer right after it is received. Acer as10d7e

The author carried out a case study and examined the cost to buy a replacement laptop battery for a Dell Inspiron laptop. He discovered that he could save a lot more than 50% on a laptop battery that offered a higher capacity and offered an expanded working time. The shopping for a replacement laptop battery article provides the details. You should check out replacement laptop batteries for much more getting tips and technical advice regarding personal computer batteries. Acer as10d41

There are many laptop batteries producers, and even more suppliers to purchase your laptop battery from. Nevertheless, your biggest concern in getting a laptop battery is going to be to pick the Acer Aspire 5520 Laptop Battery that works with your computer. Acer as10d51 For this you will need to realize the make and model number of your laptop; if you don't understand this offhand or don't possess the necessary paperwork, check the inside of your laptop computer's battery compartment while the personal computer is off and unplugged. There you should discover the model number, in conjunction with several other details. You may also find the part number of your mobile computer battery, located on the casing of the battery itself.

When getting a laptop battery, you will probably only have one or two choices that fit your personal computer. Select the battery with the longest life accessible for your laptop. There are several different types of laptop batteries; because the technologies of each are very different, a notebook computer should be designed especially for the type of laptop battery it uses. The majority of notebook computers are only designed to utilize one type of battery technology. Acer as10d61

Buy good quality replacement Dell Inspiron 1525 Battery at reliable laptop battery store, and big discount batteries for laptops just for you to choose.

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Disruptive technologies: Lithium-ion batteries

Welcome to a Laptop Battery specialist of the IBM Laptop Battery First post by: www.askbattery.com

"To compete with advancing gasoline/diesel engines, EV traction batteries have to be much more than twice as energy dense as lithium-ion ever will be, at least three times cheaper, and last much longer before replacement," states a recent TrendTracker report. Dell P769K

So, does that mean that lithium is a dead end technology? What will it take to make lithium a truly disruptive technology?

Apples to apples, lithium-ion battery technologies simply don't compare to gasoline powered internal combustion engine vehicles. It's just not yet in the elements. That chemical reality has been acknowledged by many in the battery segment. Lenovo IdeaPad Y450 battery

For instance IBM Almaden Researchers working on future batteries note, "Since the efficiency of electric propulsion systems (battery-to-wheels) are about 90%, a 10-fold improvement of the current energy densities of Li-ion batteries, which are typically between 100 and 200 Wh/kg (cell level), would bring electric propulsion systems on-par with gasoline, at least as measured by gravimetric energy density. However, there is no expectation that current batteries such as Li-ion will ever come close to the target of 1700 Wh/kg. New chemistries are required to achieve this goal." HP HSTNN-IB25

No problem, right? Just tweak the solution in that beaker, son.

To resolve this problem, IBM researchers have been working on more futuristic battery technologies, such as lithium- air batteries. HP 628419-001 To wit IBM notes, "the requirements for large capacity automotive propulsion batteries are extensive, but quite well defined. They will serve as guidelines for the research to be carried out on Li-air systems. At present, automotive propulsion batteries are just beginning the transition from nickel metal hydride to Li-ion batteries such as IBM ThinkPad R60 Battery, after nearly 35 years of research and development on the latter. The transition to Li-air batteries (if successful) should be viewed in terms of a similar development cycle." Acer UM09E31

35 years? Are your fricken kidding me? Throw that beaker against the wall. Acer 31CR19/65-2

Of course, an unexpected breakthrough or some completely out-of-the-box thinking could turn these lithium-based chemistry studies on their heads. Unfortunately, that's a bet with low probability. Acer 31CR19/652

Nevertheless, that doesn't mean that lithium-ion batteries couldn't be a disruptive technology. Some kind of dynamic charging capability or a change in consumer expectations could rewrite the book on lithium-ion potential. Acer 31CR19/66-2

If for instance, 90 percent of your driving needs require less than 40 miles of range, why can't a plug-in with a minimum of 70 miles of electric power not be feasible? Acer AK.006BT.075

Because if you're gonna pay ,000 for a vehicle you expect far more functionality, right?

But, what if you were only paying ,000 for such a vehicle? Sure it might only be a two-seater. Additionally, such a vehicle might make even the science-fiction looking design of the Toyota Prius seem overly conventional. Acer AK.006BT.080

Regardless, would that really be so bad if such a vehicle were truly cost-effective? So cost-effective in fact that combined with the rental costs for an occasional weekend car for longer trips, your plug-in purchase was still far more cost-effective than any other vehicle?

Maybe. American consumers are a pretty fickle bunch. Acer AS10D battery

Inevitably, lithium-ion batteries are only going to be a disruptive technology if consumers revolutionize their thinking about personal transportation. And, if gas prices keep rising, such out-of-the-box thinking isn't really that hard to imagine.

Will it happen? Probably not, but it could, as could some completely unexpected technological breakthrough. Acer AS10D31

Of course, as hybrid cars have pushed automakers to embrace technologies like start/stop, perhaps lithium-ion can help automakers re-imagine plug-ins in a way never before imagined. Acer AS10D3E

For instance, battery-maker EnerDel's subdivision EnerFuel sees a future where something like the Chevy Volt could significantly reduce its battery size by replacing the gasoline engine with a small fuel cell as range extender with on-board gasoline to hydrogen reformer. Based on such a combination of technologies, EnerFuel envisions powertrain combinations that offer less overall range, such as just 200 miles, but at significantly reduced costs compared to the current Volt's powertrain architecture. Acer AS10D41

200 miles of range with instant fueling capabilities comparable to today's gasoline-powered technologies? Sure it's not perfect for cross country trips, but for everything else it more than works. Even for long distance trips it isn't pushing most consumers that far outside of their box most of the time. Acer AS10D51

Inevitably, lithium-ion batteries by themselves are probably not enough to become a disruptive technology; however, if lithium-ion technologies can provide the impetus to push automakers and consumers outside of their box of conventional thinking and expectations, lithium-ion could still become a disruptive technology.

Right Method to Use Netbook/Laptop Battery Acer AS10D61

Are you using laptop? That you use laptop batteries and how much they know? Long-term use to connect the power of the notebook, how good it save battery? This seems to look not very important issue, actually the life of this notebook has great impact. The following came to know the proper use of laptop batteries it! Acer AS10D71

First, battery program

Most laptops are equipped with automatic functions of reduced frequency, so that maximum benefit is to extend the books of the toshiba portege m400 battery. Many people who use the Celeron may have questions about books, our books do not have this feature, is not naturally less power out? Acer AS10D73 CPU consumption of electricity is only part of fact, the order should be like electricity: LCD> CPU (speed)> Graphics> Wireless LAN> CPU fan. In other words, in addition to CPU, we can start from the other side, the maximum reduction of electricity consumption. Acer AS10D75

In Windows XP Control Panel there is a power management option, the "power scheme", set the LCD screen about 10 minutes in the idle shut down the most reasonable and the hard disk will have to set more appropriate in more than 15 minutes. Instant boot disk does not need a certain power that frequently start and stop on the hard disk damage is considerable. Of course, you can also manually turn off the screen, most of the books are by fn + F3 function key to achieve. Acer BT.00603.111

Set LCD, hard drive shut down time, if you want to further save power, but also running on the system to adjust, it is not a Windows XP can do. Acer BT.00605.065 With Thinkpad, for example, most of the books have built-in battery management software, general books will provide eight screen brightness adjustment, although the state can get the brightest best visual effect, but it is very, very power-hungry, so , edit a document or some other common application to adjust the screen brightness to the lower six or seven best. At the same time, CPU can be set to the best battery performance, CPU fan running status set to "balance" is more reasonable. Acer BT.00603.117 battery

Second, the correct charging method

Many people use the laptop battery, that power began to charge less than 100%, but this will reduce the lithium battery power accelerating the total capacity last long, battery life much shorter time, but life on the greatly shortened . Therefore, the proposal battery will be limited to less than 10% charge from charging again, and be mindful not be set too low, such as the use to only about 3% charge left, which is not enough science. Insufficient power to set the alarm must be generally less than 10% of the alarm as well, less than 3% of the serious alarm means that the battery is insufficient to support the boot into the system the next time. Acer BT.00603.124 Many battery management software is less than 96% of the default start charging, it will damage the battery charge, so be sure to change this setting. In addition, the best off charging the battery so you can play the role of conservation.

Third, discharge necessary? Acer BT.00604.049

If the notebook's battery power for a long time greatly reduced, the depth of discharge can try to "save" it. This is a "dead horse a living horse doctors" approach, not a last resort, better not to do so. Discharge the simplest way is to constantly run the program, less than 3% of electricity to restart the books after running into the BIOS vacant until the automatic sony vgp-bps8 battery power-off date. Then the depth of charge, charging time to reach eight hours, but not more than 12 hours, so you can restore some power to lithium batteries. Acer BT.00605.062

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extend the battery charging time is not a big problem

I often see the discussion of articles for books battery energy, say are some skills, but this is the books like to discuss every aspect of the battery, if the look and make you feel half the experts, then even if an end of the article!

Laptop Lenovo 0A36287 Battery camera camcorder battery

First to look at books from the perspective of saving the battery, as to energy conservation, it is necessary to first know how to avoid cell "aging"! Typically, the battery internal resistance with the use of time as the growth becomes larger and larger, there will be voltage drop mate, system voltage support is not sufficient, resulting in severe shortage of electricity. Over time this will be a vicious circle, seriously affect the battery life books. Lenovo 42T4845 This was lucky, sometimes your books battery failure will be a failure in a very short period of time, it is a headache! This failure is probably caused by batteries, this mostly occurred in the lithium battery, who are just like the books of the battery flashlight stabbed home as is a composition of one of the batteries, as long as one of a failure, then it will result in the overall series, voltage delay, regarding the scrap it! Therefore, to use electricity during charging, do not use industrial power, as voltage is too large, will affect the discharge curve! Lenovo 42T4847 Start charging, do not select the fast mode (BIOS setting), battery charging with constant current charging mode, the system load current, avoid the CPU, hard drive, LCD power struggle between the phenomenon. Discharge when the deceleration let CPU, hard disk stops and the screen transferred to the darkest (or closed off), do not run any programs until the laptop automatically shut down to achieve the objective of low current discharge. Also, if you can find in the market, "temperature protection device", then the best of! It can be achieved by adjusting the overall balance, very good battery backup protection devices

Now more and more people use the notebook as a notebook lithium batteries, one of the main parts of the problems also increases. So how good use of the notebook lithium batteries do? Grasp the main points:

1. To the appropriate charge and discharge current.

2. To minimize the discharge less than the charging or over-discharge. Lenovo 42T4235
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While the battery is a consumable, lithium-ion battery is no exception. Lenovo 42T4731 But no one wants to use up the battery fine spirit of God, to what age do not even rattle is finished, no one wants to start his own half dead battery does not pull the living, has been rubbing on it in 2023, makes good sad to realize how the thing about you is not?

Well, get down to business, following the battery began to speak. First explain, only lithium-ion battery HP Laptop Battery.

Appropriate charge and discharge current

General literature and the state standard on lithium-ion batteries on said lithium-ion battery charge current should be between 0.2C to 1C. Lenovo 42T4733 It is said that the charge current battery capacity, such as your battery is 4AH, then the 0.2C charge current is 0.2X4 = 0.8A, that is the charge current should be between 0.8 to 4A. In general, the charge current at the extent permitted by the smaller the better, rechargeable lithium-ion battery should be a constant current charging the start, in my IBM R31, this current is about 2.8A, equivalent to 0.7C, is charging its own circuit control can not set yourself. Although this indicator does not charge more than the standard requirement, but is actually relatively large, especially when the battery capacity decline for some time after the charge current may be more than 1C. Now the length of time charge notebook users have also become targets regardless of the manufacturers were forced to set such a high charge current. Lenovo 42T4737 battery

So first step is to reduce the charge current. I have a friend in the lab, all equipment readily available, on trial with him a bit. Power outlet on the first series resistance try a result, current is reduced, but became intermittent charge, this is not a good thing. Through trial and error, 4 Ohm is a more ideal value, this time around 0.8A charge current is very stable. This is only the current flowing through the machine power connector, Lenovo 42T4753 battery charge current is estimated to larger, should be slightly larger than 0.2C. Specific to a different machine, this value may be different. Also with the increase in battery voltage, charge current will be reduced, but the decrease rate is small, less than 0.05A. In this charge state, charging circuit seems to not work, the battery indicator light is not bright. Etc. Lenovo 42T4757 After the battery voltage up to 12.6V, charging circuits came into play and trickle charge the battery into the state, this time does not matter whether the series resistance has been, the charge current is controlled by the charging circuit, the last full charge after the charging circuit automatically end. The charging time is about 5.5 hours, if not resistance, charging time is 3.5 hours or so.

Lithium ion Lenovo 51J0499 batteries are very delicate, good charge control circuit is required. With this charging method, can reduce the charge current, battery life, while use of the books original charging circuit controls the charge is relatively simple to achieve them, just buy a power plug (that is, from the power supply plug into the notebook kind, the best to buy two, followed by the methods referred to still use one, be of good quality) and a resistor on it, pay attention to big head and little resistance, after all the above are about 2W of power Otherwise, it would be more heat resistance, preferably constant resistance of the wire myself one of the wire resistance and this resistance is independent of temperature. Lenovo ASM 42T4703 However, this disadvantage is also obvious that, while not charging work with books. In addition, when charging will have a strange phenomenon, I do not write omitted here, and you try to know, Fortunately, this phenomenon into the trickle charge after the state disappeared. To extend the charging time is not a big problem, anyway, before the night began to charge the next day wake up and fully charged, of course, if you are a night owl or a special short sleep time, that is another matter. Lenovo ASM 42T4752

Small current charging problem solved, and now discharge problem. In fact, this is difficult, after all, the book is used to work, the discharge current will vary with the working state, the method mentioned here only designed to restore battery capacity of the operation. Lenovo ASM 42T4756

Start the machine, set the power management will never go to sleep (standby) and hibernation (hibernate), others are set to the most power-saving mode, including CPU speed, turn off hard disks, turn off displays, while in TP management process Close some unused hardware, such as sound cards, etc., and then open the battery status display window, and allowed to run in the foreground! ! ! Close other programs, in particular, screen savers and other programs that run on time! ! Do not use the machine, do not close the lid, let the battery discharge end (not to discharge the minimum value set to 0, I set up 3%). Display and hard drive shut down, the discharge current is about 0.5A, this is my IBM R31 can be achieved on the minimum discharge current, battery LG Laptop Battery discharge to the minimum value of the machine will automatically shut down after. Lenovo ASM 42T4796 The discharge lasted for more than four hours, depending on your battery capacity may be different in different, this time is also used to sleep way to send the.

Well, the last to emphasize that the method is not dead, especially discharge, 10 times which can be done once, or else why should the battery? Lenovo FRU 42T4702 Charge all the best with a small current charge, of course, if the need to use batteries, power cord plugged directly into the notebook on it.

Using this method my battery is now fully up 14 times, the capacity has been maintained in 45 more, the battery design capacity is 43.2, and has come down, but after such a charge and discharge are restored. Lenovo FRU 42T4751

Beginning about two points, one appropriate charge and discharge, and second, not to discharge less than the charge, discharge less than the following to see how to solve the problem on the charge it:

To minimize the discharge less than the charge or over discharge Lenovo FRU 42T4755

In fact, over-discharge a good solution, not to terminate the discharge limits set too low on it, I have been using 3% LENOVO Laptop Battery.

Often use batteries may only be a short Shi Jian, such as battery remaining 70%, if the switching power supply, then the battery will Zidong charge, such a loop vanishes, although the battery's Shoumingbushi set to cycle the absolute number of death of, but always it will reduce the battery capacity, lithium-ion batteries have no memory effect reported, but in fact only a relatively low Bale memory effect. Lenovo FRU 42T4791 Unfortunately, IBM does not provide solutions to discharge less than the charging method, but provides the basis to solve this problem. This is what I found on the R31 may not be suitable for other machines, but the method should also not far off, do not forget after you've tried were posted for all to share.

R31 charging circuit based on the status of the power to decide whether to charge the Lenovo FRU 42T4793 battery. Power supply output voltage is 16V, within error of plus or minus 0.2V, if the voltage is lower than 15.5V, so not to charge the battery charging circuit, and books can also work, this is the IBM provided the basis for settlement. But the foundation is weak, because the voltage, if less than 15.2V, books will be converted to battery power, even if the power outlet in the books are useless. In other words, we can torment the space is 0.3V. Lenovo FRU 42T4795

If you can find a 15.5V, over current 3A switching power supply, then the problem is solved, otherwise please continue to look down IBM Laptop Battery SONY Laptop Battery.

Reduce the power supply output voltage 0.5V is not an easy thing, series resistance does not work, because the resistance of the voltage will change with the current size. I use silicon rectifier diodes, to allow more than through the current in the 2A, or hot tube. Silicon Rectifier diode forward voltage drop between 0.7 to 0.5V, just to meet the requirements. Now a plenty of such tubes in the electronics market, price less than 2 yuan. To a different book on the specific situation may be different, the best time to install a digital multimeter Cece hand. Pipe is being connected serially in the power output, and still harder to buy a power plug inserted himself in the notebook. Diode which is not reversed, the book does not work it wants, and then in turn connected on it.

In this way, the power output voltage drop is about 0.5V, if the drop too much, the book will switch to battery, if the drop too low, the book will charge the battery, the specific number to you in your own notebook tried to know.

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