Specifications:Up to 35 hours of gameplay per charge.High-quality NI-MH battery for long time use.Make it possible to recharge battery when continuous play.Comes with a charger cable for USB charging.Capacity: 4800mAh.Weight: approx. 160g.Suitable for:X-BOX 360 wireless controllers. Package Includes:2 x 4800mAh Battery Pack2 x Charger Cable