I have some concern because I know that the RV forced air furnace takes ~11 to 13 amps to run, and I imagine when camping in a HTT in the Canadian Rockies, where it can get to the single digit temps (Celcius) or into the 30s F, the furnace will run quite a bit. I'll check for the phone jack hole on it, and if it has that I will buy the gizmo that allows for better charging.
Other than that, I will take along my multi-meter and take a few readings. In my previous RVs, I could usually tell the condition of the battery when I woke up and heard the speed of the furnace fan LOL.
