Join Date: Nov 1999
Location: Palm Beach Gardens, FL
Their "professional charger" may not be capable of charging an AGM type battery, especially one as dead as yours. I've brought back a few "dead" ones with my charger, but it ain't cheap ($190, for a Xantrex Truecharge 10A).
BTW, there are 3 types of batteries: flooded, gel, and AGM (absorbed glass matt). Try for the dealer replacement.