Generic 4 x Rechargeable Battery and Quad 4 Charger Dock Station Kit for Wii Remote Controller Black can be used on Nintendo Wii remote and remote plus, wii U remote plus controllers and wii fit, wii fit plus and wii fit U balance board High capacity batteries last 2-4 times longer than the standard AA batteries Package Contents: 4 x Ni-Mh rechargeable batteries, 1 x Charging Station, 1 x USB cable