Patona batteries are completely i. O. I bought one about 3 years ago for my camera, then FZ 150, who does his duty without any problems still. Now I have this brought here for a58 and have absolutely no doubt that that is just as good. I have also been around for a couple of Where. in use and notice no difference to the original battery (up to few Euros saved more in my purse; o)) So buy!