@Janx: I wouldn’t do that either way, too risky ^^”
Guess I’ll have to send it back to Banggood yeah, I’ll try to have a refund instead of having a new one. I just don’t want to wait for them to receive mine and send me back another one, that would take too much time.
Anyway, thanks for your help 🙂
@Alain: Yeah, that surprised me more than a little. Like you, I think it is impossible to charge it that many time in a lifetime.
Either way, I tried charging it turned off, it worked. I now have 40% battery. I am trying to follow Chris’ how to to recalibrate the battery (here, for those interested) but that will take time, and even if it works, I think I’ll send it back.