I have this battery very happy now for almost two years in use and am still. The capacity has not diminished, the battery will last at least as long as the original battery, perhaps almost 'a trifle longer. Depending on the application I get so out 800-1400 images, so I with two batteries from (one in the camera, the other to swap) get along very well. I never get a battery on the day completely empty shot.
