Arsenal Xbox 360 Charging Pack - Black Type: Battery & Charger Features: Replacement charging pack for your XBOX 360 Wireless Controller. Avoid the inevitable problem of your battery pack losing power during game play, with the Arsenal Charging Pack for Xbox 360. You can charge your controller and play at the same time. No more worrying about low batteries. The pack also includes a supplemental battery. Features - Compatible with Xbox 360 wireless controller - Rechargeable battery charged by USB via Xbox 360 or computer - High quality 2100 Nimh batteries provides up to 25 hours of play time - Charging cable with indicator light - UL approved for safety & quality assurance for battery