How long will single battery last with heater running?

Empty Nest, Soon wrote:
A number of such cold weather options are available from many manufacturers, but so far as I know very few dealers ever order them because so few of us here in the US camp in extreme weather.

I would be shocked if these available options were not more common in Canada, particularly among folks who camp in Canadian winter.

Well be prepared to be shocked. ;)

A lesson in geography ...

The population of Canada is approximately 36 million, about 10% of the US population, and of that ~ 1/3rd or about 12 million live in S Ontario, defined as that area south of Algonquin Park to the southernmost island in Lake Erie. Surprising as it may seem FAR more Americans live in the northern US states bordering the 49th parallel and therefore are further north than 1/3rd of the Canadian population so in reality having to deal with cold, winter weather is far more of an issue for far more Americans than for many Canadians. The idea that recreational vehicles built for the Canadian market are modified in some way to better sustain use in extreme cold weather is a myth ... they're the same as their US counterparts. Take my own Coachmen Freedom Express for example, built exactly the same as those sold in the US other than minor adjustments for Canadian codes. In the Freedom Express lineup there is also a dressed up version called the Maple Leaf Edition sold here in Canada which is exactly the same as the Liberty Edition sold in the US, again with only minor code variations between the two. Additional features to these two dressed up versions are just that - window dressing - and don't include anything that would improve performance in cold weather. These are all considered to be 3-season campers, suitable for use from early spring to late fall but not including what we here in Canada or those in the northern US states define as winter.