Gary,

Ditto. I used to worry about this because of several reasons, but I now assume this is normal.

I came to this conclusion for the following reasons. First, our inverters are supposed to "load share", a term that was used to describe that both chargers would work together. So far I have seen one or the other carry the bulk of the charging load. When you are on shore power your 120V loads such as the refrigerator will be handled by the shore power, but the bus still has some 24V loads, such as the head hunter system.

Unless you can sneak into the coach without turning on lights you will see the house batteries being charged because the charger is providing power to the batteries to replace the load from the lights.

The key that put my mind at ease was I checked the voltage at the batteries and as it turned out my voltages were always OK, and that is the key to whether the charging system is doing its job