Remove the need to constantly change your controller batteries with expensive disposable. Our handy rechargeable battery packs are made to measure to fit your controller and offer hours of gameplay off one full charge. Our money saving twin packs offer 2 x 850mAh rechargeable battery packs as well as a USB charging cable that can charge both battery packs simultaneously. The 3 metre length cable ensures you have full flexibility in where you charge. The battery packs can also be charged whilst placed in the controller allowing you to continue playing whilst power is restored. Venom Xbox Rechargeable Battery Twin Pack in Black