If you're having trouble
getting your phone to last through the day on a charge, Android makes it easy
to figure out where to get power savings. Head over to the battery section of
the settings screen. You'll see a graph of the battery's discharge rate, and a
list of running apps and services ordered by how much power they've been
sipping (or guzzling). On many phones, the screen is the biggest culprit, so
maybe you'll want to turn down the brightness to save some juice. Or perhaps
there's one app that's chugging away in the background, chewing up battery ,
that you'll want to kill. Just click on that app, and click "Force
stop" on the following screen.