1. Reduce the screen brightness and/or timeout: This is no rocket science. The brighter and the longer the screen light stays, the more the power your device consumes. So, to save battery life, dim (or reduce the brightness of) your screen back light and the length of time it stays up when unused before time out or sleep.
How to: Simply navigate to SETTINGS, then DISPLAY, then BRIGHTNESS. Now set the level to a lower level, maybe none, I bet you. Also, check SLEEP or TIME OUT SETTINGS. Reduce this. You will see a great improvement in your battery performance.
2. Switch off unused connections: This is also common. Take a look at your phone now, and I bet you, at least your Bluetooth, or Wireless WiFi or even both are on. And you are currently not using either. Now you complain your battery doesn't lat. How will it last? These services drain the battery life as they use power. So, basically, switch off unused networking connections.
How to: Simply turn off these services under SETTINGS.
3. Get rid of vibrations: Simply check your audio profiles and get rid of vibrations be it of key press or sound profile.
How to: First, customize your audio profile (General, Silent, Meeting etc) and switch off vibration unless necessary to leave it on. Secondly, under SETTINGS, check INPUT/KEYBOARD settings, and remove VIBRATE ON KEYPRESS. This also drains battery.
4. Remove unnecessary notifications and push messages: These services use power and a lot of background processes. Use only those that are necessary.
How to: Simply reduce the number of background processes, and/or determine each app settings to remove or reduce notifications and push messages.
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5. Reduce sound volume: Unless you are using your phone as a DJ speaker, why the loud sound on each call? Cut it! Reduce the phone volume and the reduced decibels will reflect on your battery life span.
How to: Under SETTINGS, see your audio profiles, and customize the General profile, reducing the sound volume.
6. Use auto-power saving mode: Using the power saving mode at periods you don't use the android device will save you a lot of power. The power saving mode will reduce CPU usage, screen brightness, suppress unnecessary background process, reduce sound volume and many more.
How to: Using free apps like Du Battery Saver, or the inbuilt Android settings system, select the power saving mode especially when battery is getting low automatically. Enjoy Android - by http://www.howtutor.com/
7. Uninstall unnecessary apps: This will reduce unnecessary excessive background processes and memory leakage that tell on battery.
How to: Simply review your APPS list under SETTINGS, and uninstall unneeded ones.
8. AUTO-POWER ON/OFF: Switch off Android device when not needed: A good feature of many Android devices is the AUTO-POWER OFF/ON SETTING. This will program your device to power down as specified time of the day/night, say 1.00 am, and auto power up at say, 5.00 am. This saves battery life span and performance.
How to: Check under SETTINGS to see if your device has this feature and take advantage of it. Set the power off to when you are not going to need the device, and let it auto power on when the need arises.
10. 3G Data drinks battery: Switch off when unneeded. Switch back to edge or GPRS when 3G connection is not needed. 3G data service drinks battery life.
How to: Navigate to your data settings and toggle between 3G and EDGE.
Conclusion
Android is lovely. Get the best out of your device by making the power last to serve you right via some basic non-rocket-science set of battery and power best practices.
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