Hello, I have always had a charge voltage of approx. 14.9V, and often more when driving for some time. I measure this with a small measuring display (up to max. 15V) in the cigarette lighter. I verified the measurement with a fluke multimeter, so that’s right. In the past the voltage was variable; the high voltage > 14.5V..15.x V was only created when rolling out (energy recovery) and when switching on the seat heater (the tip was given to someone from the forum). e Idea, what the (to my knowledge) too high voltage could have to do with? “OBDeleven” does not report any errors. However, had apparently also a few months ago unwanted visit (martens?, shattered insulation, today at Christmas a candle stump (!) in the engine room), but no serious problems. However, I am surprised that the battery voltage always sinks quite quickly up to under 12 V. But the battery is not 3 years old.