After I had my first buy a no-name battery and not nearly came to the original approach of the performance, I have decided to invest einaml some extra cash. I have now tested it a few months and 10,000 images. Nothing goes flat over the original, the performance and quality has remained constant after repeated charging. I would stay away from imitators batteries, for which one then spends as much money in the end because you have a new required after a short time, since they usually lose their power or as in my case, no longer function. Quality over quantity;)