We have a shore power hookup - battery wouldn't last long even though we are running a 100Ah lithium. We used 800W heater to heat it up in the evening and then aprox 140W heater at night to keep the temperature. It was an amazingly pleasant sleep with 19 degrees inside :).
We left the window cracked open, I have a insulation foil that I put in between the window and me and I cant even feel it being open.
We just did a New Years camping in Algonquin.
We have a shore power hookup - battery wouldn't last long even though we are running a 100Ah lithium. We used 800W heater to heat it up in the evening and then aprox 140W heater at night to keep the temperature. It was an amazingly pleasant sleep with 19 degrees inside :).
We left the window cracked open, I have a insulation foil that I put in between the window and me and I cant even feel it being open.
(something like - https://www.homedepot.ca/product/reflectix-bubble-pack-2-x10-/1000407996 )