If you've ever wondered exactly how much dimming your screen will save on your mobile's battery life, or wanted to know what powers a thermal weapon, as well as a bunch of other random facts about batteries, here's an infographic that will interest you. It has several tips for increasing battery life, in a variety of devices from mobiles to golf carts.
Did you know you can save 35% of an Xbox controller's battery life by removing the battery and storing it in the fridge? I didn't. I'll probably still forget to do it. But it's good to know - and there are several tips like it below: