Tools used are :
1. “Disks” 3.6.1
2. Jupiter Applet
Disks, This program comes default with ubuntu 12.10, it has many improved features this time. One important feature is, it also controls HDD Drive speed, which can end up in maximizing performance to battery.
After opening the Drive Settings, It shows power managements options for HDD. You can set power as low as possible to increase the Drive speed.
Next and the last is, PowerTOP, install it by typing the terminal.
$ sudo apt-get install powertop
After installing it, give command in the terminal.
$ sudo powertop
Your application will start running, switch screens with left and right arrow, and get into “Tuneable Tab” and change all setting which are bad.
Thats what made my battery backup approximately 80 minutes more then my normal battery backup, Thanks for reading, I hope you find this post helpful.