[jpwhite]

Thanks much all for the valuable feedback!

Regarding the PD 4500, I went ahead and ordered the VMAX MR127. It should arrive Friday.

The furnace power usage stats are great, thanks. Getting through the night running the furnace is a lot to hope for on a single battery. I will be happy if I can run the fridge on gas all night. (I actually have the 3120 with RV / Gas fridge). The large Dometic fridge has 12v DC fans running constantly. I ordered a cheap battery monitor to help me understand power usage.