Sometimes the Zoe has a very, very loud and unpleasant noise when loading. It has already happened to me 2 times. What might be the cold temperature was around the -10/12 degrees. I then put the noise out and plugged it in again. After some time it stops then. Otherwise the charging process was always silent except for the buzzing, therefore it surprises me.Does anyone know this “problem” or is that normal. I use a go-echarger at home in the garage.