NYKO 86039 Xbox 360(R) Pro Power Kit 360
2 high-quality NiMH rechargeable batteries ; Compatible with Microsoft(R) wireless controller for Xbox 360(R); CE approved for safety & quality assurance; Eliminates the need for expensive batteries; Up to 20 hours of play per charge; Battery gauge accessible through the Xbox 360(R) dashboard; Includes charge & play cable for convenient battery recharge from the consoles USB ports