Battery Run Time Results

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of dell laptop battery   First post by: www.laptop-battery-stores.com

We played the vob file from the notebook’s hard drive in a continuous loop to stress both batteries until they were empty. We connected the Universal Notebook Battery to the Latitude D630 notebook and launched BatteryMon 2.1 as well as the video playback. After three hours and 38 minutes, BatteryMon reported that power supply switched to battery mode, which means that the APC battery was now empty. We still had a remaining run time of four hours and 35 minutes. In the end, the Dell notebook played the video file for eight hours and 13 minutes, which gave us an 80% battery run time increase on top of the notebook’s 9-cell battery such as dell 312-0393 battery, dell Latitude D800 battery, dell Inspiron 8500 battery, dell 8N544 battery, Dell Precision M60 battery, dell Inspiron 8600 battery, dell Inspiron 6400 battery, dell Inspiron E1505 battery, dell Inspiron 1501 battery, dell GD761 battery.

APC Universal Notebook Battery 3h 38min



Dell 85Wh

4h 35min



Total

8h 13min



We also did some battery run time testing without any active workload, which resulted in approximately 11 hours of battery run time using both batteries. Run time can probably be even longer if you force yourself to work with very low display brightness. The second test showed the same 80% increase in run time, mainly because this is effectively the battery capacity difference between the 85 Wh Dell battery and the 70 Wh APC Universal Notebook Battery (82% gross difference).

If you maximize the notebook power saving features and limit display brightness to a reasonable level—which is certainly possible on a plane—you will be able to hit more than nine hours of battery run time when working with desktop applications.

APC’s approach is not new, but the Universal Notebook Battery is a very solid and flexible product that will increase your battery run time roughly by the amount it increases the battery capacity. In our scenario, we used the 70 Wh APC Universal Notebook Battery to increase the run time of our Dell Latitude D630’s 9-cell 85 Wh battery. This 82% battery capacity increase resulted in battery run time increases of roughly 80% when playing DVD video off the notebook’s hard drive, or when leaving the system idle.

APC allows the easy adjustment of the Universal Notebook Battery to your notebook by providing nine different power plugs (Apple MagSafe not included), and offering four different voltage levels. Being close to your notebook’s supply voltage is usually sufficient, but check the compatibility list for details to be on the safe side.

Be sure you don’t use the “Balanced” power profile of Windows Vista, as it will have the APC-powered system run at maximum performance, hence utilizing more battery power than necessary. The additional USB port is great to charge iPods, phones or GPS devices when travelling.

Our 70 Wh sample starts at $120, which seems acceptable knowing that spare batteries can be more expensive, and that the power adapters used by certain airlines aren’t substantially cheaper, but have limited use. On the Web, we found the 60 Wh version starting at $90, and the 90 Wh top model at more than double this price. That much money, though, will probably get you a high-capacity battery for your notebook plus the 60 Wh version of APC’s Universal Notebook Battery.