Engadget
Stop replacing the batteries in your Xbox controller – Do this instead

The Xbox Play and Charge Kit replaces AA cells with a 1-cell lithium-ion pack, delivering up to 30 hours of play per charge and a four-hour full charge for $24.99, while allowing simultaneous gameplay via USB-C. Third-party options include dual-battery docks compatible with older Xbox One controllers, and rechargeable AA sets or direct USB power provide additional alternatives.