The entire premise is built around the idea that the spot is reserved for charging. If the charger is broken, the simple answer is that nobody can park there, not that laws cease to apply and the spot can be ICEd.
The sidewalk is for walking and doesn’t have anyone walking on it, so I parked there.
Nope. Nope, nope, nope.
If you think €10 is a lot, find out what it costs to serve someone.