The Microsoft Xbox 360 rechargeable battery packs are for use with the Xbox 360 wireless controllers and replace the standard battery pack which uses two AA batteries.
This easy to use accessory makes the Xbox experience alot easier and less complicated as your not having to keep buying batteries everytime then power is getting low, all it takes is one simple USB cable.
When you purchase this reasonably priced product from practically any high street gaming store or online it should come with the pack and a USB cable.
Simply plug the USB side of the wire into your Xbox via either one of the two USB ports just beneath the power button infront of the console or the one to the rear of the console towarda the top, then place the battery pack into your controller just like any other pack and the other end of the wire into the slot on top of your controller.
This product is easy to use and a great value for money as you can carry on gaming for hours on end without the hassle of having to charge around the house commandeering batteries from peoples tv remotes.
A must buy for all you Xbox 360 enthusiasts.