Review DELL Vostro V13 , DELL Vostro V131 and DELL XPS 13 Battery Life

DELL Vostro V13 battery Life

Battery Life

The notebook consumes between 12.6 and 14.6 watts depending on the screen's brightness setting in idle mode, respectively very light load. The rates increased to 46.4 watts, respectively 68.8 watts during load. The adapter only consumes 0.1 watts when turned off and is just as modest 0.6 watts in standby.

Current consumption

Off / Standby 0.1 / 0.6 Watt
Idle 12.6 / 13.3 / 14.6 Watt
Load 46.4 / 68.8 Watt
Key: min: , med: , max: Voltcraft VC 940

The DELL Vostro V13's battery life wasn't convincing. The battery was already drained after a very short time in Classic test and had to be plugged into the outlet after 49 minutes. The battery didn't last for a whole movie either in the DVD playback test. It only lasted for 63 minutes.

The LG laptop had to be reconnected to its power cable after 1 hour and 55 minutes in "surfing via WLAN" at pleasant display brightness. The longest runtime (Reader's Test, WLAN off, lowest brightness) was two hours and 35 minutes.

The drained battery needs almost 2 hours for a 100 percent recharge.

Battery runtime
Idle (without WLAN, min brightness) 2h 35min

Surfing with WLAN 1h 55min

DVD 1h 03min

Load (maximum brightness) 0h 49min

DELL Vostro V131 Battery Life

Battery Life

The viable idle and WLAN runtimes (mix of Internet, video load and idle) let us assume that our A520 only needs little power in these operating modes. Our multimeter confirms this: The lowest power consumption in idle ranges from 17 to 21 watts. We measured the lowest and the highest power requirement in idle for this (without battery charging).

The stress test is the opposite (Prime95, Furmark) and is 84 watts. This power consumption isn't enough for the 45 watt quad CPU, 2820QM, and the GT 540, which we explained in CPU throttling in temperature. The reason is the weak 90 watt power adapter. The Fujitsu NH751, with a smaller quad CPU (2630QM) and a GT 525M graphics, is equipped with a 120 watt power adapter to begin with (no throttling). This would have at least been needed for the LG A520.

Current consumption

Off / Standby 0.4 / 0.7 Watt
Idle 17.1 / 20 / 21.5 Watt

Load 78.3 / 83.7 Watt

Key: min: , med: , max: Voltcraft VC 960

The rather modest runtime, the low TFT brightness and the glare-type screen don't exactly encourage mobile use. The WLAN surfing test comes very close to the real battery life. The battery is drained after three hours. The LED screen ran with 100 cd/m2 during the test. Our BatteryEater's load test can depict if a game of StarCraft 2 is possible. The lights go out after only an hour. A 57 Wh lithium ion battery is responsible for the runtime (5200 mAh). It needs acceptable 2:13 hours to fully recharge.

Battery runtime
Idle (without WLAN, min brightness) 4h 29min

Surfing with WLAN 3h 14min

DVD 3h 17min

Load (maximum brightness) 1h 01min

DELL XPS 13 battery Life

Battery Life

The V900 Optimus' power consumption is within the same range as the competition. While only 0.15 watts are needed in standby mode, the consumption increases to 7 watts during load. In comparison: Motorola's Xoom consumes 6.3 watts in load and Samsung's Galaxy 10.1v needs 8.2 watts in this case.

Current consumption

Off / Standby 0.8 / 0.15 Watt
Idle 2.2 / 5.4 / 5.6 Watt

Load / 7 Watt

Key: min: , med: , max: Voltcraft VC 940

The battery, respectively the battery's runtime, is one of the most important things in a tablet because a tablet on a leash (battery charger) is a "no-go". The LG V900 Optimus was also faced with the key question: How long will my battery last?

The lithium ion battery (6400 mAh) lasted for 12 hours and 21 minutes in the first test scenario, the idle mode, so without WLAN/Bluetooth/GPS and minimum display brightness. We had to touch the screen frequently during this test because the display would have otherwise turned itself off automatically every 30 minutes and thus distort the result.

The battery is drained after 7 hours and 15 minutes of WiFi surfing. It's faster when the tablet is put under load, for example, with an HD game. The battery was drained after not quite 4 hours and 48 minutes and the Optimus pad turned itself off in load. The battery needed almost 3 hours for recharging.

These rates are clearly below that of the 10.1 inch Motorola's Xoom (16 hours and 15 minutes), in comparison. The LG tablet can't reach the battery life of Samsung's Galaxy 10.1v, either (13 hours and 5 minutes).

Battery runtime
Idle (without WLAN, min brightness) 12h 21min

Surfing with WLAN 7h 15min

DVD 5h 12min

Load (maximum brightness) 4h 48min

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