if you are laptop users and want to increase your laptop life than I have good article which help to save some battery without effecting your normal work I personally found quite helpful as i used to run my sony laptop to 3.30 hours around but thanks to changes I can now run up to 4.30 hours!
read: 10 Tips To Increase The Battery Life Of Your Laptop
read: 10 Tips To Increase The Battery Life Of Your Laptop