The picture is self-eplaining. Patona batteries show odd parameters, while a Nikon original battery is more in line with the declared specs. This is by no way a reliable experiment, as the batteries’ state is not comparable. I will continue experimenting with different models because these results are pretty odd. However I can not blame Patona for the outcomes, for the bromine volkit itself might be defective and a fair comparison should be based upon batteries handled similarly.