For those of you, who have not heard about powertop, it is a tool to monitor the power consumption on your system. It has a tab which shows the tuneable parameters. Doing the changes suggested in those would improve the life to quite an extent. Here is the description of powertop:
So, here is something that you can do to quickly apply the changes suggested by tuneable parameters.
First, get the report in html format using
sudo powertop --html
With this you will get powertop.html and now quickly get the xidel binary from sourceforge site. Once you have got that exeute the command
xidel powertop.html -e "css('html body div#tuning table tr td:nth-child(2)')"
This will show you all the tuneable parameters of your system 🙂