1) Rechargeable battery compatible with XBOX 360 wireless controller
2) It can charge your XBOX 360 controller directly with a controller charging cable.
3) It can work 18 hours after charging and with 2100mah battery pack in it.
4) It can protect your XBox360 controller with a secure circuritiy
5) With Overcharge Protection
6) Capacity: 2100mAh
