Originally Posted by ipolyihh
If the the coach is plugged in, it will keep the chassis battery topped off.
for an experiment, turn on the headlights, you'll hear the charging start in the coach until a little after you turn them off again ( assumes you are plugged in )
So, according to your observation, the BCC (battery control center) must sense the load from the headlights draw, and call for juice from the converter to meet the demand. My question then would be; if that is the case, then does the BCC control current allow flow of current in both directions, as needed without the engine (alternator) entering this equation.
Wouldn't a volt meter test on the chassis battery, as the converter spoils up to supply juice to the demand, proff that assumption. I think if BbClemens could have an FR EE talk to this topic, it would be much appreciated.