Leave them in or not ... if so, I would charge them (as you posted), then
disconnect either lead so there's no chance of leakage/discharge. I bring
mine in so they'll be there in the spring ... along with the prop. Bonus ...
I have on one occassion hauled the boat battery out of the basement to jump
start the jeep. I keep mine in the basement and charge them now and then. I
don''t bring them for fear of freezing ... I'm in Ottawa where it has been
known to go down to -55C ... if the jeep battery doesn't freeze, then
neither would one left in a boat ... i.e., nobody around here brings their
car battery in on cold nights :-)


Popular widsom has it that the batteries should be removed from the
boat before winteer storage. The boat will be stored outside, here in
Montreal