Having bought Guitar Hero 5, the option of the rechargeable battery was my source of flowing (a bit heavy to have to continually take spare batteries), but now I receive said battery and ohhh surprise !!! missing 3 mm so that contact is made between one of the two battery terminals and terminal guitar ..... (can not go wrong with the direction of insertion), for one, the battery option is my only option, so if you own the mistrust Guitar Guitar Hero 5, the battery does not fit it.