Ever wish your Wii Fit Balance Board had just a little more juice to last through those extra-long workouts? Nyko recently released the EnergyPak for the Wii Balance Board. The rechargeable lithium-ion battery pack will power your Wii Fit for up to 30 hours of use, and you can even recharge it while in use. Nyko’s EnergyPak fits right into your Wii Fit battery compartment, charges from any AC outlet, and the cord can be removed for convenience. With this extended life battery pack, now there’s no excuse to shorten those Wii Fit workouts. The EnergyPak retails for approximately $19.99.