DOBE Dual Charging Dock for XBOX ONE Wireleand XBOX ONE SERIES. Includes 2 rechargable battery pacs with 800mah x 2 for the wireless controller Dobe TYX-1817X It can charge two Xbox One controllers simultaneously Input: USB DC 5V 1A Output: DC 2.8V 350mA*2 Battery capacity: 800mAh Charging duration: about 4 hours Accessories: Battery Pack*2 pcs, Special Rear Covers of Xbox One S/X batteries*2 pcs, Special Rear Covers of Xbox Series S/X batteries*2 pcs