With my Ctek charger I can only reach the 2nd light diode after 4 days. Otherwise the battery already has at least 3 diodes that light up when you start charging! The battery is only a few months old, so I exclude a defect. If the battery was empty after longer service life, then it was charged up to the 7 diode at the latest after 3 days. Has anyone ever had this and solved it? On the inside windshield I had moisture. Where is the control unit? right or left? Have times raised the upper mats, so far dry, but I don’t see anywhere where you can lift anything to check the control unit and its environment for moisture.