@f0x I see :D was it difficult finding out which parts got fried?
@anarchiv the power distribution board (where the battery connects) was very obviously fried, due to the battery shorting there.
After replacing that, I also found out the video transmitter, and camera were broken. Lastly the main board (brains) worked fine except being unable to read battery voltage.
So in the end I ended up replacing everything but the frame, motors, and receiver..
@f0x that sounds like a lovely way of spending the day.