We have now ordered the batteries for the second time because we are super excited. Keep super long and are quickly recharged using the correct charger. Even those of us after delivery before precaution charged batteries last forever and can be used without any problems as needed without the need to be angry that they have been emptied during storage. On technical matters here is already much has been written and which I have honestly not that much of a clue. Anyway, we have again thrown away quite a lot of old batteries and replace with these batteries. This eternal Batteriengekaufe is finally over. Strong buy recommendation. Delivery was again super fast, it's also used otherwise in Amazon.