When I first bought this car a year or so ago, the 12v battery kept going dead. At first I assumed it was a bad battery and I replaced it, but the problem remained. Then after much trial and error I discovered it only happened if the car was left plugged in to the charger, which was a level 1...
I have had a problem with the 12v battery going dead and I did some experimentation. It seems at least in my case, the battery 12v battery starts discharging if the 110 volt charger is plugged in and cannot charge for some reason.for instance I had the hood open and a battery monitor connected...