Propane & Battery usage

The fridge will kill the battery in a few hours in 12 volt mode, but will last for a month on propane (assuming you keep the battery charged periodically - it still needs some battery power even in propane mode). Depending on how cold it is outside and how warm you have it set inside, the furnace will last from several days to a week on one tank. Usually you have to worry about the battery more because the furnace fan is a hog. 2 or 3 nights tops for the battery if you keep your other useage low, like lights and water pump.

DABABE:  After you have the fridge chilled down and on the road we use the battery as the TV is also charging the Pod battery. When camped and no electrical use the propane as suggested as iit will suck the battery down quickly. When pluged in we use an electric heater and it works great and saves the propane if we are ij a Walmart or Flying J. Depending on how "warm" ypou want it the propane should last a decent amount of time...you will just have to test it after running the stove and heater for a days use and see how much propane has been used ( you will have to take into consideration the outside temp and your internal setting as that will vary the amount used)