its ing awesome. I forgot where my charger was this morning because I haven't had to charge the thing in so many days. Granted I don't play for more than an hour or two a day, but still pretty impressive. It comes on an off pretty easily, and I chose this over the battery replacement that nyko makes so that I can upgrade to the circle pad extension when it comes out and not have to worry about unscrewing the battery everytime I want to play one of the new games.