Hello, the Arona TGI will winter in the underground car park, we are not there for six months. That’s why I’m looking for a battery charger with maintenance function and hit the CTEC CT5 Start/Stop. In addition, there’s even the possibility to connect the device to the battery by cigarette lighter. Prerequisite would be that the cigarette lighter in the Arona has permanent current. Does anyone know that? I don’t have anything to try this with at the moment. Then the charger could be in the interior, the cable would be dur ging not, the charger would have to lie outside, which would not be cheap in the large underground garage. Again a question: Is it possible to accommodate a charger with maintenance function in the engine room and still not leave the bonnet open invitingly? Thank you and kind greetings