Save Battery Power on an Android

The Android operating system is turning the mobile communications and PDA world on its head by offering features, functionality and an open architecture that threatens to blow away everything else on the market. 

However, many of the features available on Android devices can cause batteries to become drained very quickly. Because of this, users of Android devices must intelligently and proactively manage the energy in their batteries. 

1. Set device to only use 2G networks. 
2. Reduce the brightness of your display
3. If your device has an AMOLED screen, always use a black background.
4. Set your screen timeout to the shortest length possible.
5. Turn off the wireless feature when not needed. 
6. Turn off the Bluetooth feature when not needed.
7. Turn off the GPS. 
8. Use the Power Control widget. 
9. Turn off the phone vibration function.
10. Do not leave applications running when you don't need them.
11. Put your phone on standby mode when you are not using it.
12. Put the device in "Airplane Mode" while on an airline flight. 
13. When traveling, take your charger as well as a USB cable with you. 
14. If you have Android 2.3 or above then install a power management app on your device.
15. Use idle process killer applications.