Check how much watts of power battery consuming every second
$ sudo apt-get install powerstat $ powerstat -d 1
And check watts option how much power consuming every second.
Now install TLP
$ sudo add-apt-repository ppa:linrunner/tlp $ sudo apt-get update $ sudo apt-get install tlp tlp-rdw smartmontools ethtool
Now start TLP. Note: You have to run this command only once, it will start automatically whenever system reboot or start
$ sudo tlp start
Check TLP status whether it is enable or disable
$ sudo tlp-stat You see something like +++ System Status TLP power save = enabled power source = ac
Again check powerstat -d 1 and see the difference. Before power consumption and new power consumption.