In the beginning it was said that the roadster should be stored in the storage mode. Then it was said, no storage mode, but plugged in. Now I have the impression as it is best to keep the battery not fully loaded. So, when I go for a trip of one week. how would you suggest should I leave the roadster? - Plugged in in storage mode? - Not pluged in but full, or not full? - Plugged in in normal mode?