Pengaz USB Rechargeable Battery Pack Play and Charge Kit for Xbox One Controllers Compatible with Microsoft's wireless controller for Xbox One. Enjoy gaming anywhere, anytime. Up to 8 hours of playing time, built-in rechargeable Ni-MH battery (charging cable included) allows you to play while charging. High quality rechargeable battery pack for Xbox One controllers. Excellent performance and long life. Package contents: Pengaz Xbox One Controller Battery x1 (1200mAh Ni-MH)& Micro USB charging cable