I did the same thing with the help of the same people here, I'm sure. I built my house bank to 3 group 27 batteries, with the charger feeding them directly. My starting battery is charged using the Echocharger.
So far, it all works!
Odyssey, '79 CSY 44 Cutter
Channel Islands, CA
"There is no unhappiness like the misery of sighting land (and work) again after a cheerful, careless voyage."