Play and recharge the Xbox 360 wireless controller"s battery pack simultaneously. The Power Kit includes two (2) high quality NiMH rechargeable and an extra long USB charging cable. Each battery provides up to 20 hours of play per charge while the extra long cable allows simultaneous play and charging up to 11 feet from the console. The extended cord makes it easy to kick back at a comfortable distance from the TV without accidentally disconnecting the controller. Never worry about running out of battery power for your controller during play again.