This wii charging station Quad includes 4 NiMH batteries?? exclusively designed for the Wii Remote?? and each providing up to 25 hours of play time. Every wii battery is easily recharged by placing the Wii Remote in the charging dock.</br>LONG BATTERY LIFE:The wii rechargeable batteries that lasts 2~4 times longer than the standard AA batteries.The wii u charger conveniently plugs into usb devices?? allowing for rapid recharging of all four batteries simultaneously.Dock both of your remote and plug it into any USB port. No need to remove the battery.</br>CHARGING REMIND:LED light glow from the base of the dock station to show the batteries charging status.The light will turn red when it's in charging?? after full charged it will turn blue. After fully charged?? the wii remote charger will be powered off automatically.</br>This wii charger will