How can I check the battery status?

Over the weekend I charged the (nuki 3.0 pro) battery, today it shows only 90%. I open it 3-4 times a day. Is it possible that the battery has failed? I charged it with an external non fast charger battery on purpose so that it wouldn’t have a problem. Is this normal? I’ll watch it, but I won’t let it go below 60%. I don’t want to exclude myself.

Please contact our support via the Nuki App (Menu > Help > Contact Customer Support) for direct help on that (as you can directly attach more information from the device there).

I think this is a normal accu protection feature! I have also two locks with accupacks, and when loading over night, they automatically end the loading-process everytime on about 90%, and I know that the lifespan of such accus is longer when not loading above 80-90% and not below 15-25% (on my smartphone its the same, it even explains this specifically), and so for I think its a accu protection feature!