SLLEA 2pcs 4800mAh Battery Pack+ Charger Cable for Xbox 360 Wireless Controller Black 2X 4800mAh Battery Pack+ Charger Cable for Xbox 360 Wireless Controller Black Compatible with: Xbox 360 Capacity: 4800mAh ; Output Voltage: DC 2.7V / 300mA Battery Dimensions: (2.24 x 1.42 x 0.67)" / (5.7 x 3.6 x 1.7cm(L x W x H) Cable Length: 58"