XBOX ONE Wirele and XBOX ONE Series DOBE Dual Charging Dock. comes with two 800mah rechargeable battery packs for the Dobe TYX-1817X wireless controller. Two Xbox One controllers can be charged at once. USB DC 5V 1A input DC 2.8V 350mA*2 output 800mAh is the battery's capacity. Time needed to charge: roughly four hours Accessories: Battery Pack with two pieces, Xbox One S/X battery special rear covers, and Xbox Series S/X battery special rear covers