The listing, MadCatz Rechargeable Battery Pack Nintendo Wii Fit Balance Board (inc. USB Cord) has ended.
Rechargeable Battery Pack
Brand: Mad Catz
Quantity: 1 battery pack per package.
Compatibility: Nitendo Wii Fit Balance Board.
Connection: USB cord - included in the package.
Features:
eliminates the need to constantly purchase costly batteries,
provides up to 20 hours game play time,
charge easily direct from PC or Wii via USB (2m).