Glad things are charging for you now Bob.
I think there are articles on line in other forums about replacing the Sprinter class one way battery isolator device under the driver seat to a system that allows bi directional charging......so charges both battery strings if either shore/gen or alternator is running under certain voltage and time parameters. I am not sure how that might affect your warranty though......something to research, until your warranty times out I guess.
__________________
|