Hello, my sister left the light on the Opel Adam and now nothing works anymore. The door only opens mechanically, no clapping at the ignition, there’s everything. I connected a charger from the neighbor overnight and there’s nothing at all. Still 5.6 V as at the beginning. Have Lixht and everything switched off from the inside of course. When charging at the back window the light is always rhythmically very easy, is that normal? I have nothing from the battery Is the battery broken and mjss changed or do I have to disconnect EVERYTHING from the battery? Is that the reason why the battery does not charge, that I have not disconnected anything but connected the charger directly? I am grateful for help. LG