Battery pack for Xbox 360

Specification
Chargers Combination Compatible with Xbox 360 Wireless Controller
Battery Type: NiMH battery
Capacity: 4800mAh
Stable Performance & Safe Lasting
You can also charge your Controller directly with the USB charging cable.
A desktop charger can let your controller have enough power for playing.

What's in the box
4800mAh Rechargeable Battery
1 x USB charging cable