Battery pack for Xbox 360 wireless remote controller can be charged and played simultaneously. The Power Kit includes (2) NiMH batteries of high quality and an extra long USB charging cord. Each battery allows up to 20-hours of play with a full charge. Meanwhile, the extra long USB charging cable allows playback and charging to be done simultaneously up to 11 feet away. The extra-long cord allows the user to relax at a comfortable distance away from the TV, without having to worry about disconnecting the controller accidentally. Never worry again about your controller's battery running out during play. The battery is NiMH, which provides excellent performance and a long life. It also comes with a longer charge and play cord for convenient charging of the battery from the console's USB ports. Compatible with Microsoft's Wireless Controller for Xbox 360.