USB rechargeable batteries

I just ran into these set of batteries; USB rechargeable batteries

How it works
Open up the top and then fit into a USB port and your battery will charge like a phone does, but it charges faster.
For those of you who now use wireless pads and joystick for your video games, no more excess spending in order to buy new batteries. Just get a couple of these and be assured you save a lot of  money.