Battery Doctor (Battery Saver) v5.14 build 5140006
Requirements: 2.1 and up
Overview: Battery Doctor is a FREE battery saving app that can extend your battery life up to 50% by finding apps and settings that drain power on your device.

Battery Doctor is a FREE battery saving app... http://www.apkformod.com/battery-doctor-battery-saver-v5-14-build-5140006/