Power Saver - Battery Doctor

Power Saver - Battery Doctor is a FREE power saver battery app for all Android devices and can help you get up to 50% more battery life for your Android phone.
The Smart Battery Optimizer gives your phone the ability to background levels is performed to kill to activate applications, while working as Memory Cleaner, Ram Booster, and Task Killer for a better battery performance.

Features:

★ 1-tap Power Optimization
Just 1 tap will stop the power-draining apps from running
★ Smart Use of Battery
Discover how long your battery will last under a variety of situations (playing games, Wi-Fi (active), etc.)
★ Convenient Power-Saving Widget
Quick access to power related system settings (Wi-Fi, data, brightness, etc.)