Quote Originally Posted by groucho070 View Post
Xperia. If you use app a lot, battery gets sucked up pretty fast. I guess it's the usage.
You can use the System Task manager to kill the unwanted tasks that run in background. Problem with android is it won't kill the apps you closed, and they will needlessly keep running in background. If not, try some 'task killer' apps in market.

Cyanogenmod has task killers which you can optimize very deep but installing that voids ur warranty