PBP Battery issues. Drainage on load with external accessories

[WhiteDragon]

Thanks for the suggestions. Booting from SD-Card would not have been an option, since the machine wouldn’t turn on. However I tried to boot it with the battery disconnected and the overwrite cables engaged. And lo and behold it bootet. So I guess your assumption was correct. Tried it again with power and battery connected and after two attempts it worked. Battery shows 0% charge. So it’s either faulty or my 20W power supply was not strong enough to power the dock via USB without draining the battery. But since that did not occur the day prior, I would think it’s a faulty battery. I‘ll try charging it over night and we‘ll see what happens.