I do not know if it was because of my copy, but the battery could be partout no longer out of the camera (EOS 1000D) Remove. Clean it goes smoothly, but somehow it does not seem to respond to the pen in the camera, and you only get it out when you nachhilft from the side with a sharp object. This is in the long run no solution. Why is it I can not fathom, the part looks the same as the original, only the contacts see a little bit different. I therefore had to return the battery.