For those of you that don’t mind increasing the battery life on your iPhones, there’s a new application in Cydia by iOS developer Xvolks
that you should check out called BattSaver
. It increases your battery life by adjusting system options that use battery power even while your device is in standby mode, such as Push, wireless radios, Location, and more.
When you install BattSaver, you will find a new application icon on the home screen. The application is where you go to adjust your settings and view battery