Battery life, as you know, is a big deal for mobile users. (To borrow from The Princess Bride, if you haven't got battery life, then you haven't got anything.) The Root Uninstaller Team has a new report listing the best--and worst--smartphones when it comes to battery life, as well as the apps that are the biggest battery hogs.
The average battery time for all of the 474 devices measured (for 5,585 users) is 20.4 hours--so not even a full day. The Samsung Galaxy Mini and Sony Ericsson Xperia X8 E15a don't even last six hours, apparently, and the other battery-unfriendly devices last between six and twelve hours. That's not great for travelers or anyone who relies on their phone to get through the day.
On the other side of the spectrum are devices like the Samsung Galaxy Tab 10.1 and the LG Optimus Pro, both which last over 60 hours (wow!) on average.
Pre-installed system apps can really kill your battery life too, apparently, but if you want your phone or tablet to last longer you should also avoid apps like Cowboy, My Work Clock, and Camelot.
See the post on battery statistics for Android to see how your Android phone or tablet measures up or to compare with these best and worst devices lists.