Power Battery – Battery Saver v1.6.8 (Mod Ad Free)
Requirements: 4.0+
Overview: Power Battery, as the most professional battery saver app, could get up about 60% more battery life for Android phones or tablets.

This smart app could supply functions of customizing power saver... http://www.apkformod.com/power-battery-battery-saver-v1-6-8-mod-ad-free/