That sounds exactly opposite of my coach...
On the Tour Master, the shore power charges the house batteries and the inverter batteries (a separate stack of 4 each 6 volt golf cart batteries in series/parallel which run the inverter and also start the diesel generator.) The shore power does not charge the chassis batteries that are used to start the big diesel pusher engine -- but I did add a separate battery maintainer to do this when on shore power...
Because the generator "replaces" shore power when it is running via the transfer switch, it too can charge the house batteries and the inverter stack.
Chuck
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2007 Tour Master T40C
Acura MDX toad
"It takes a great deal of time to recover from any improvement..."
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