Just curious...What was the original motivation to add the DC to DC charger in the first place?
Are your RV house batteries lead acid? Or Lithium? If Lithium I understand the need for the DC to DC charger, but in a post above it made reference to lead acid. If they are lead acid then I don't understand the need for this DC to DC charger.
Are you trying to run huge draws (ie. microwave or AC) while driving without using your generator? Seems like you could just run your generator while driving if this is the case.
Just curious. Sounds like it is generally doing what you expected so that's good.
-Chris