PowerMax by VoltUp

Tried of drained batteries? Well, PowerMax by VoltUp has a solution for your Android phone. Voltup intelligently manages the various radios on Android devices, including 2G/3G/4G, WiFi, FM, GPS, Bluetooth. VoltUp puts these radios to sleep when the user wants to trade functionality for battery life. This significantly prolongs battery life – up to twice as much! VoltUp offers a free version. A permanent license can be purchased once the free trial concludes. Over 300,000 copies of PowerMax have been installed (as reported by Flurry).