Nyko Xbox 360 Rapid ChargerNyko Xbox 360 Rapid Charger for Wireless Controller About the product: Drop and Charge design allows for charging without removing batteries Two custom NiMH rechargeable batteries provide up to 20 hours of play time Dual port recharging dock charges both controllers simultaneously LED lights clearly indicate when charging is complete Plugs into any wall outlet for rapid recharging Features: Drop in and Charge Unique design allows for easy recharging