Hey all. I'm in Kansas City which means I get brutal cold and unseasonably warm spells. Overnight lows can drop below zero but usually not for long. It's not uncommon to have 40+ degree days and open water throughout a lot of our winter. Prior to actually catching some fish I just put my boat away for the winter and shoveled snow and ice off the cover. I'd like to be able to go this winter when time and weather permits.
I used to bring my batteries into the heated garage and leave on a maintainer for the winter. That was not a super easy task before I added several batteries and multiple connections.
How many of you all store the batteries outside on maintainers through the winter? I'm not sure why I'm concerned about this. I always keep my RV batteries out in the cold but plugged in. Maybe it's because RV batts only need to kinda work and the boat batteries need to be in tip top shape and there are too many to replace often.

Oh and I have an outboard so long as my gear oil stays dry there isn't anything to (de)winterize.