Battery Doctor，the professional power manager，is the best free battery saving app which is capable of extending your battery life.
FEATURES：
•Accurately estimates battery remaining time
•Task Killer that stops apps that drain power while not in use
•Unique three-charge cycle that boosts battery life
•Widgets that improve battery performance
•Accelerates the speed of your device
•Indicates how much battery power will be extended if you shut down Bluetooth/Wi-Fi/etc
•Gives device software and hardware information
Accurately Estimates Remaining Battery Time
Tells how long battery will last under a variety of situations (playing games, Wi-Fi on or off, etc)
This Smart Saver Defends Your Juice
This essential app does everything battery-related from giving tips of when to charge (and more importantly when not to) to more advanced battery longevity features such as disabling unnecessary apps/hardware that drain power and using our unique three-stage charging s
