The group 27 I put in is a marine / deep cycle. I really don't think it's the problem. I know it won't last long, but remember it only lasted 20 minutes from full charge with only the furnace running.
I torqued down the new breaker pretty good and twisted and tugged on the terminations at the battery. I'm certainly no expert but all those mechanical things seemed fine. Zero sign of corrosion.
We usually snowbird and stay at the same park (plugged in) for a month or more at a time. We often stay at Walmarts or truck stops overnight when travelling. We have a generator and don't mind using it but basically all I need is a full night of furnace with enough juice to start the generator in the morning to recharge and make coffee.
It's kind of like RV fridge / residential fridge. We like the RV fridge but for what we do a residential is more cost effective (except for those rare occasions...)
Incidentally, I have another thread going about my RV fridge. I wonder if the 12V problems I've described in this thread have anything to do with that problem?? (but I don't want to hijack my own thread) :)
