Make your laptop battery last all day

 

You don’t want to spend all day worrying about when you’ll next be able to charge up your laptop, so take some proactive action to limit the drain on its battery. With the right operating system tweaks and customizations, plus some good habits, you can go longer than ever without being shackled to a wall outlet.

http://www.popsci.com/make-your-laptop-battery-last