There are some tips that you can use to save more of your battery. First, you can turn OFF your Wi-Fi, Bluetooth, GPS and turn them on only when you need to use one. It is not necessary to keep them ON all the time. You can also try to reduce the Brightness of your screen, turn your vibration off, your the proximity sensor(auto-rotate screen option) and your screen animations. All these are power consumers that you don't specially need so your device could work properly.