It works on the power plug, but as soon as I pull the plug out, it switches off immediately!
I think the battery is broken… Or discharged
Sholva! I know that too! What should I do?
Yes what? New battery
https://www.sps-forum.de/pc-und-netzwerktechnik/6652-tun-nach-tiefentladung-litiumionen-akku.html
Batteries are wearing parts and somehow give up the ghost. You either buy an original battery or a replica battery.