This is the one thing which depends very much on the hardware you're running, but as the post notes, turning of the GPU can very helpful, and you won't notice t

This is the one thing which depends very much on the hardware you're running, but as the post notes, turning of the GPU can very helpful, and you won't notice the difference in most usage (which may even be everything you do). I was able to do this in the BIOS, which is actually the easiest way to do it (if your computer supports it). The other thing is scaling the fan down[1] - as long as you don't go overboard with it, it's perfectly safe, and a huge impact on battery life. Finally, turn off your wireless card and/or Bluetooth if you're not using them. Many computers enable Bluetooth by default, but since most people don't use them, it's a needless battery suck. [1] The other thing is scaling the fan down - this