Acer Aspire 1551 11.6-inch Notebook Review – AMD Turion IIWed, Dec 01, 2010 - 12:00 AM
Battery Life & Power Consumption
One of the most important factors when purchasing a notebook is what kind of battery life you can expect from it. Manufacturers can make some pretty outrageous claims so we’ve set up our test to simulate a couple of situations that you may encounter.
Idle battery life is measured by enabling Windows 7 “Power Saver” power plan. Dim display is set for 3 minutes, turn off display is set to 15 minutes, and sleep is disabled entirely. Brightness is set 10marks from the minimum.
For our web surfing battery test the “Balanced plan.” Dim is set to 5 minutes, turn off display is set to never, as well as sleep being disabled. We loaded up our active Facebook account, Digg, and ThomsonReuters news home page in Firefox, installed “ReloadEvery” and set each page to update every 30 seconds.
Battery life is pretty good here, coming in at over 6.5 hours when idle, and 4.5 hours of web surfing.
We are often curious as to what kind of power is used when a notebook is plugged in so we decided to break out our Kill-a-Watt and see what readings we could get for some usage scenarios. We have Idle, Idle while the battery is being charged, load, load while being charged, and charging only which is the notebook turned off but the battery being charged.
These tests were completed on “High Performance” power plan settings, which turns the screen brightness to the max. For our idle test we waited for 5 minutes after Windows has gone idle, we took a measurement from the Kill-a-Watt. For our load test we loaded up x264 benchmark and recorded the constant power draw during the first pass of the benchmark.
Considering that this is a decently powerful dual core CPU and graphics powerful enough to do a bit of gaming on, the power use is not bad at all.