When you're deeply immersed in a game, you can happily play for hours. With the PowerPak NiMH battery pack, you can ensure your Xbox 360 controller has as much energy as you do for long-lasting gaming sessions. This rechargeable battery is designed for powerful performance and long life. By providing up to 25 hours of play per charge, the PowerPak helps you stay focused on your game without worry about the power status of your wireless controller. You can even check the battery's power level by accessing the battery gauge via the Xbox Dashboard so you know how much juice you have left before a recharge is in order.