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wrote:

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,.

Question is, why can the batteries not be left in the boat if they are
fully charged before the winter and charged again in the spring?

We have too many batteries (IIRC 8 golf cart type - and too heavy) to
do this. We couldn't do it very well in the haul slip, and it would
be a real PITA after the boat was hauled to be going up and down the
ladder with batteries. Plus I think it may not be as cold in
Maryland as it is in Montreal. We do have the solar panels which work
even in the winter to keep the battery topped up.

On the cars OTOH, when we go away for the winter, we (Bob) take the
batteries out and brings them into the house where they will be a
little warmer (we keep the heat on low as it helps keep the pipes from
freezing), and also put them on a trickle charger I think.

We also drain the water systems (both house and boat) and put
antifreeze in various places.

grandma Rosalie