"mediocre quality. Almost worth lower cost"1.5 starson by essidus
Pros: lower cost than official charger base
Cons: lower quality batteries.
Summary: This product is all right. It's not great, it's not bad. The batteries themselves are almost (but not quite) as good as the official ones. The biggest issue I've had with them is that they have a tendency to flub when decharged too much. You end up having to fight with them to get them to take a charge again, no matter where you try to charge it from. I ended up returning it as defective and paying the extra for the Microsoft licensed charger.