Microsoft Rechargeable Battery (B4U-00001) for Xbox 360

The unbridled gameplay provided by the Xbox 360 and its wireless controller represents the next generation of console gaming. You can further enhance the experience with an Xbox 360 Rechargeable Battery Pack. This handy little unit provides true continuous gameplay, even if you own just one Play & Charge Kit. Now you can have one fully charged battery ready to go at all times. A single charging session provides more than 25 hours of gameplay, and you can recharge while you play or when the Xbox 360 is in standby mode. Don't get caught without the juice you need.