If you have a Wii Fit balance board and don’t use it that often, you’re probably finding that the batteries are dead more often than not. If that’s the case, you might want to consider purchasing a rechargeable battery pack for your Wii Fit board. Currently, Buy.com is offering the Wii Fit Rechargable Battery Pack for Balance Board for only $6.99, down from $29.99! It also ships for FREE.