Re: An electrical conundrum
Yes, it is the separator and it is working as it is designed. When you are plugged in the house battery voltage becomes high enough that the separator joins the two battery systems together. This is the bidirectional part of the separator. If there is a charge on either battery system, it will combine them so that you charge both. So when you are plugged in then the the two systems are combined, So there really is not a problem. Depending on the separator, there are things you can do to prevent this from happening. But if you connect the van battery back up, and plug in you will keep both batteries charged up.
2004 E350 EB V10 E/PH 2WD