Free tool to extend MacBook Pro battery life Video

Video description: Gfxstatus is a useful menubar item that lets you choose between Integrated or Discrete graphics on late 2008-2012 MacBook Pros. If you need more power, force the Discrete option. If you need to save battery life, choose the Integrated graphics. And if you trust the computer to switch back and forth, choose the Dynamic option and enable Growl notifications so you can see the switch occur.

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