After the first two charging cycles of the battery, I can attest to good stamina, hardly worse than the original. In video mode, my camera with original battery logs relatively quickly with a flashing red battery indicator, still you manage an hour of continuous video recording. With Patona battery the red flashing indicator comes much later and the endurance is only marginally worse than the original. It's comforting to know that you do not get an immediate battery warning, so a great plus for Patona.
Over the life I will confess, when the changes arise.
