The remote control of the Nintendo Wii ( Wiimote ) works with a AA battery.I recommend using rechargeable batteries / Charger combo for it as you will save some money overtime. Rechargeable battery such as the Rayovac hybrid batteries ( available on Rayovac Direct ) will be able to be recharged up to a 1000 times. If you are a hardcore Wii-gamer, rechargeable batteries are the best option for your Wiimote.
