Originally Posted by Wolverine 1945
I dough very much if your plan would work in Michigan ???
Or any where in the North Country !!!
I assume you are referring to the cold weather. Actually batteries hold their charge FAR better...2-3 TIMES better in cold and freezing weather than in summer heat. Getting a car started is harder....but keeping a battery full is easier. You may expect a disconnected battery to lose roughly 5% of charge per month in winter vs. around 15-20% in summer.
The KEY is a FULLY charged battery to avoid freezing. A fully charged battery will not freeze till -91 degrees. At 62% charge you're good to -16 degrees and at 40% charge you will freeze at +5 degrees.