On Monday, 14 December 2020 at 17:52:10 UTC, Kellerman wrote:

With 220mA max current it can be left connected whenever the car is not
in use. Just hang a label over the steering wheel to remind the driver
its there and must be disconnected not dragged down the road. :-)

Some cars have a charging connector in the boot which has an ignition
interlock to prevent the car from being driven away while the charger
is plugged into the car.

John