JuiceDefender helps an Android phone get more out of each charge by shutting down functions when they’re not needed. Choose the power-management settings that suit your needs: The least-aggressive setting shuts down connectivity when your screen is off but reconnects every 15 minutes to update email and Facebook notifications.
Advanced Task Killer shows you a list of apps running on your phone in the background, allowing you to shut each one down with a click. The service can be useful, if you know which apps are energy suckers.
Timeriffic allows you to put the functions on your phone on a schedule, so that the ringtone won’t sound at work, for instance, or Wi-Fi connectivity will shut down while you sleep. Settings can also be established by location. Like the other apps on this list, Timeriffic is free.
Source: ShopSmart
