The Motorola Droid RAZR MAXX is already the smartphone with the longest-lasting battery life, with enduring 8 hours and 25 minutes (continuous surfing over 4G at 40% brightness). However, here’s a list of tips that will help boost your battery life up to whopping 10 hours.

Know your Apps
Check how often your apps sync data. Less syncing means more battery life. Most appropriate syncing time is once every 2 hours. This applies to all the apps in your Maxx including Facebook, Google+, Evernote, Dropbox and Twitter. Usually, you can adjust the syncing frequency from the application settings.


Dim the Display
Dim the backlight at least to 25%. Turning off "Automatic brightness" will also help increase the battery life.


No Live Wallpaper
A black image would get you the best battery life.

Shorter Screen Timeout
You can change the screen timeout at “Settings > Display > Screen timeout”. Shorter the time of Screen Timeout, better the battery life.

Turn off Wi-Fi
Turn it off when you are not connected to a network via Wi-Fi.

GPS
Turn off GPS.

Use Smart Actions
This is one of the best tools available to extend your battery life. “Sleep” is a good example. You can set it up like this –

• Trigger:
  
  • Timeframe - Night
  • Charging - Any Source
• Actions:
  
  • Ringer Volume - Silent
  • Background Sync - Off

Battery saver apps
There are many third party apps you can download through Google Play that can be used to extend your battery life. Juicedefender is one of the best.

Excellent, I will share this my friends too....

Rose(April)

Superb Man, some tips are applicable for all phones.

Good phone, but I prefer to keep an extra battery with me rather than offing features like GPS, etc.