After a full year of asking others, taking my 2013 Energis (I have 2) to the dealer, and constantly having to jump start my cars, I have finally gotten around to learning Forscan and updating my ACM. Worked well but one now has a low battery and driving it a few times didn't charge it. I had my local auto supply store test the battery and it tests fine. They said that my Voltage Regulator is bad. Not true - right? No Alternator mean no Voltage Regulator - Right?
My question: Is there anything equivalent to a Voltage Regulator that could be causing the battery to not charge? Is that the DC-DC? Or is this likely just a matter of buying a battery charger and letting it charge overnight?
D