It seems like there isn’t much a smartphone can’t do these days…except hold a charge. So how do you prevent it? Carry your charger around with you everywhere? Buy a case/charger combo? Never use your phone? All valid options we suppose -- okay, except for maybe that last one. But how about something that’s only a download away? Available free for Android devices powered by Snapdragon, BatteryGuru is a simple app that extends battery performance by learning how you use your device and making intelligent changes in order to optimize functionality. Having gotten a recent update, version 2.0 includes added features such as predictive charging to go along with its already helpful qualities. Download the app HERE to keep your phone from becoming just another useless accessory.