Purchased the 5 in 1 Fitness Bundle for my wife for Xmas. The bundle itself, in theory, was very appropriate for the Wii Fit. The battery and charger, from the get go, wouldn't hold a charge. Contact with DreamGear yielded no results other than the usual dog and pony show of apologies and excuses with the problem surrounding the rechargeable totally ignored and unresolved. The company Director did not have the courtesy to return calls to discuss the matter. Out of all this, it was learned from DreamGear, that the use of the battery pack would result in the voiding of the warranty, confirmed later by direct contact by Nintendo. If buying this DreamGear product , or even thinking of it, save your money. The product is shabby and the customer service is even shabbier.