maillemaker wrote:
So how long would a group 29 12V battery run this thing for?
I'd say, not enough variables listed to give a reasonable answer. ambient temp, type of inverter and other things running adjust the end result.
What I did on a day that was 65-72 degrees outside was to open all windows and leave the outside fridge hatch on. Nothing on but the fridge (RF18), Inverter (RV750ULW) and parasites, such as CO2 detector. Everything else was off.
Batteries: 2 GC2 US2000, 5 years old. In fair shape. Started at 12.7 and 8 hours later was at 12.1. I turned the power back on. I have not tested with other things like vents, fans or entertainment.
We do not boondock so I was not interested in deep management. I was happy with these results.