Thanks Gjac. My thinking is the converter is not charging the battery, but yes, your right. I hadn't considered that and no, I didn't check the voltage on the old battery as I wasn't home when it was removed and replaced. But I've lost confidence in the WFCO converter as you guys haven't given it a good a report card. So I ordered a Boondock 75a. I chose it over the Progressive Dynamics as it has a 3 year warranty. It will be here next week. I'll update how this progresses. I'm gonna wait till this weekend to do any testing as we have some nasty icy, cold weather moving in tonight.