Wii Fit Balance Board Charger Question

[mjgaming]

Hello, I was wandering what is the best Wii Fit Balance board charger is? I want to be able to plug the Wii Balance board into the wall outlet or into a USB on my Wii and let it charge while I play. Does anyone know what this is called and what is the best one?

 

[Ian14]

this is the one i have http://www.game.co.uk/Wii/Hardware/Accessory/~r334543/Wii-Fit-Battery-Pack/?s=Wii Fit Battery Pack

 

[SMASH KING]

this is the one i have http://www.game.co.uk/Wii/Hardware/Accessory/~r334543/Wii-Fit-Battery-Pack/?s=Wii Fit Battery Pack

this is pretty helpful.i could use one of those