After a few months of use the battery is set to swell, I think it is a counterfeit SONY already when I received the material was not the same as I had come with my sail Photo gray but as the foil off the original was smooth gray luckily I had removed the battery from the sails picture otherwise I think it would kill me to have my sails pay more than 30,00 to finish some months later the garbage has a big mess I do not recommend at all!