Peugeot Metropolis Problems with Baterie

Hello guys, I’ve been having problems with my battery for ages. It’s now the second new battery installed at short intervals with me and still the problem has not been solved. At the latest after the third time short distance and then perhaps still with a few days distance, the complete onboard electronics collapses when starting and it goes garnix more. To the charger with it and then it goes again. I was already in the WST with the problem, they have it on the softwa I can’t leave the mill at the power outlet all the time? I would be very grateful for some useful advice.