jjrbus wrote:
People are skipping what I am saying, I will be driving often (charging battery) and running the generator or tied to a power poll. So all I actually need is to keep the fridge cold over night
Daily driving and generator have come up when - after 3 pages of responses? Forgive those of us here that are not psychics :)... Then they will hopefully forgive your skipping what they are trying to tell - your battery is way too small and is not even the right type for a coach battery.
Power poll you have mentioned for the first time now.
For your own good, I hope you will be running generator same or even more often as you drive, i.e. all the time while on the camp, unless hooked up to grid. Without constant source of power your single 100 AH battery will have a hard time charging above 90%.
If you avoid opening fridge in the night, it will remain TAD cold for 10-15 hours. Depends on the ambient. Won't keep initial 40F but will remain below 77F by the morning. A small freezer tray of a dorm fridge will probably have water pouring out, by the morning. Standalone freezer - especially a chest freezer, full of frozen items, is a different thing, it can stay cool longer because of the cold accumulated in all those items - but it takes longer to freeze them too.