Play and charge your Xbox One Wireless Controllers simultaneously with the Xbox One Wireless Controller Battery Pack. The Power Kit comes complete with a NiMH rechargeable of superior quality, and an extra long USB (r) charging cord. The battery offers up to 20-hours of playtime per charge. The extra-long USB cable allows you to play while simultaneously charging. The cord extension allows you to comfortably recline at a distance from your TV without worrying about accidentally disconnecting it. Never worry again about your controller's battery running out during a game. Power Pak NiMH Rechargeable Battery for Xbox One(tm) Wireless Controllers. Also compatible for Xbox OneTM with Nyko Charge base. CE approved safety and high quality.