WowWee Mip Rechargeable Battery Pack + Adaptor, Black

This item works as expected--it fit the product and charges appropriately. I only gave it three stars because of its design. Its charge does not last significantly longer than the regular batteries, and it requires you to unscrew it from the Mip toy to charge it. If this was a toy for toddlers, I would understand this safety precaution. However, this toy is marketed at children who are a little older and most likely use many other devices, such as iPods, Kindles, 3DS, etc that require a charger and don't need to be unscrewed. This just seems like poor design when it requires charging as often as it does.

Needed extra battery for our MIPs. The charger was a nice bonus, so now we can charge two batteries at once. So far the batteries have lasted with no perceptible drop off. We get about 15 - 20 minutes playtime from these.

if you get battery the light don’t turn red for about 20 min then starts charging but I was still shorted 1

It's great that you can recharge the batteries but you have to unscrew the back every time which makes it really easy to strip the screw (which my kids did) and to loosen the plastic around the screw s (they did this too)

now i can keep my mip running forever with the spare battery.

Did not charge toy properly, one screw did not align to the body of the toy.

Never got it to charge. The LED just flashes red and green for a second or two before turning off.

Love my MIP, wish I didn't have to remove it to use, but still very handy.