Based on this experience I can say that I have noticed in terms of me possible comparison with the original battery, no capacity deviations. Also no difference based on the number of images per battery charge I noticed.
The only striking was that the warning in my camera for a declining battery life, at the Patona battery has a slightly shorter interval. Expressed in figures, the original battery has lent a further 20 images at low battery warning, so it was at the Patona batteries only about 10. However, I believe these batteries for reliable and highly recommended.