Hello, unfortunately I did not find any threads matching my request, so I open a new one. Before a few basic informations: The car is a BMW 520d F11, BJ 2017, 50,000 km just used bought, according to previous owner (serious!) so far no problems with the battery. So, I have said car, because I drive little due to corona at the moment and because I have “played” with standing car on the new vehicle “(Settings etc.) connected the charger ( At the charging points in the engine room). When I wanted to see if I could clamp it off in the evening, the LED 5 (analysis) lit up at the CTEK. So I left it on overnight. The next day the device showed LED 3 (bulk). I then stuck it off because I would have needed the car, but it was different. Then I connected the CTEK again one day later and now it shows after about 1 hour LED 2 (soft start). That all seems illogical to me … Did someone have an ide e, what could be involved with it? Thank you very much!!!