While exploring the web
i found such a great article on XDA Forum Moderator
Woodrube has written a simple, easy to follow guide to help yield
20+ hours of battery life on a single charge on your Galaxy S III. This multi-post guide covers basic tips and tricks, ROM/kernel related suggestions, memory management tips, and apps to help you get the most juice out of your battery.
While the guide has been written with the
Samsung Galaxy S III in mind, many of these steps should apply to other
smartphones as well. Visit the
forum thread for more details and the complete guide.