What do I do with the carging cable when I leave?

Store the carging cable always in de trunk of the car before leaving. That makes it easy at your return to start a new charging session.  

If the car is not connected at the start of your reservation, please check if the cable is in the trunk. If not, it is mandatory to call the callcenter/reservation desk. If a charging cable is missing and you do not warn the reservation desk before starting your reservation, you will be held responsible for the replacement cost (275€).