Rechargeable Snap-In Xbox One Controller 1200 maH Battery Pack with 3ft USB Charging Cable for Xbox One Controllers, Black COMPATIBLE WITH ALL XBOX ONE CONTROLLERS, INCLUDING ELITE - just snap it in REPLACES AA BATTERIES  plug, play, and save money by simply replacing AA batteries COMPLETE RECHARGEABLE KIT  includes one 80cm micro USB charging cable and one 1200 mAh xbox rechargeable controller battery pack CHARGE WHILE YOU PLAY versatility to charge the unit during play, and when Xbox is in standby mode LARGEST BATTERY ON THE MARKET  smart battery gives 6 hours on single charge, and protects your controller from overcharging