winter battery storage

[HESH2]

if left outside and charge goes down battery will freeze and be no good.do as macojo says

[Van]

If this helps.

I installed an onboard battery charger that I always use at the dock (the batt switch is always off at dock too).
For the winter, the switch is off and I plug into my outside garage outlet and trickle charge all winter. Its auto-charge and drops to like 0.5A once charged.

This way I just leave them connected, check the fluid in the spring and I'm good to go. Never sorry about freezing either.