Propane & Battery usage

If you don't have access to shore power, you'll definitely want to run the fridge on propane. The fridge will suck the battery dry within a day or so depending on outside temps. It's the biggest battery hog in your pod. 

We spent a week in Estes Park late September and ran the heater nearly every night.  It dipped into the twenties most nights.  We still had most of the tank when we got home.  Not scientific, but the gas use was quite small.  For us one 20 pound tank seems to be what we need. YMMV.

two batteries work best when charged and used together, make sure you connect them properly. After paralleling the + and -, connect the campers + to one battery and the - to the other. Connecting the campers lines to only one of them will cause them to charge and discharge unevenly killing one of them early.

My experience has been: using my furnace in 0C-10C overnight temperatures, propane will last 4-6 days.  Running just the fridge on propane, on the other hand will last 20-25 days.  The water heater will consume a tank in around 15-20 days.

Outbound sums up quite well our experience with propane and  battery usage.  We use a lot of lights and battery usage is longer because we changed all our interior lights to L.E.D.'s which only consume about 1 watt/bulb and are brighter than the factory installed ones.  At that rate we could use all our interior lights at the same time and still use about the same amount of watts as 1 factory installed bulb!  We camped out at Glacier for a week last September and had mid-upper 30's each night, furnace worked quite a bit, we only used them a night as we were hiking during the day.  We managed to get 12 days out of 1 tank, that included a fair amount of stove use for cooking as well.  We were thankful to have 2 batteries, they would run to about 1/3 charge after 4 days, after that we switched to the other.