Fixes floodlights, fridges and recharging stations.

These were not possible to turn off if there was no charge in the battery. By default, this doesn't happen as they would just get turned off when the battery ran out, but once #9374 is merged, this can happen on a receiving vehicle.
Merge pull request #2 from tivec/floodlight-fix

Fixes floodlights, fridges and recharging stations.