Hello together. At Fox my mom regularly the battery is empty. -the car had bought it used 1-2 years ago. Rest current was about 80mA and despite new battery went after two days nothing more. Car sometimes stands a week without the one driving. Motor 1.2/40kW So far carried out – Retrofit ZV removed, was defective -Radio removed and door contacts disabled (clamped and insulated) Rest current now 20-30mA Interestingly, the generator lamp (battery replaced) lights up now, Voltage in operation (cigarette lighter) 14V=iO. Probably a new construction site.. If I wait for a while when the bonnet is open, something buzzes there and afterwards it sounds like a relay falls off. -rhythmically, every 2-3 minutes. I suspect that there is still a Martenschreck installed.. Question to the forum. At the minus terminal of the battery is still a cable with max. 1.5mm2. -is that “normal”, belongs there another attack? Greetings Ralf