Nyko almost legendary with gaming peripherals, and they turned their attention to a problem that I know of: the batteries from the Wii Balance Board.

As the owner of one of these wiifit I can testify how often carried the batteries in the Balance Board. They are worse than the batteries wear out after hours in the Wiimotes to play. Then I tried the Nyko Energy Pak, I have no doubt that the battery is more in my balance board.

The Energy Pak is a rechargeable lithium-ion battery powered, are stored to be used directly in the case of 4 AA batteries. It can by connecting an AC Port Relocator load, then hook into a wall outlet. Do not ask me why they do not first the AC Port Relocator and socket in a single device.

Nevertheless, the Energy Pak is several hours to recharge, and it is to play well for 30 hours worth of time. It has a charging indicator is red when the juice from yellow to almost charged and (They guessed it) green at full load.

You should be able to get the Energy Pak by Nyko website for about $ 19.99 too. I think it's a small price to pay for batteries “pay as you go through when you do not use it.