Dewinterize Check-List

Thanks Pete, I learn more here by accident than I do with great effort at most places. It is good to know that I can streamline my winterisation. I probably will continue to pull the battery though just because it makes me feel good and I wont have to listen to my friends saying it would have lasted ten years if I would have brought it in.

Pete, I found this researching another post and initially felt somewhat vindicated. But now I question how my car batteries survive any given
-30 degree night in Minnesota. Dave.

from onthelake.net.

Whether or not your boat is stored for the season in a warm garage or out in the cold, your best bet is to remove all batteries and bring them inside. A fully charged battery with a perfect electrolyte level can probably withstand temperatures down to zero degrees without freezing. But the colder it gets, the more easily a battery can discharge, and therefore the more easily it can freeze at higher temps. If even one of the cells freezes, the battery is shot! Fully charge them about once a month over the winter and they will be ready when you are in the spring. Try to keep them off of concrete floors is possible and cover the terminals to help prevent discharge.

Pete, I came to the same conclusion, unless hes trying to eliminate that rectangular clean spot on the concrete in the spring, they solved the case issues years ago, just hoping my opinion might be validated, But I am bowing to your superior knowlege base and I will disconeect the cables and leave the battery in the boat this winter. .