Freezing Batteries

[FIN]

Suppose to get down to 12 degrees Monday. Thought I might better hook up all 3 battery chargers. Seeing it was no big deal figured I'd just disconnect them and bring them inside. I can think of better things to spend $300 on in the spring. Anyone else bring the batteries in during winter?
Fin

[skeetbum]

Where's Catfan when you need him, he knows all this stuff.

["G"]

I leave mine in the boat.....my MinnKota 330D three bank onboard charger stays plugged up 24/7 except when my boat and trailer are hooked to my truck.

[PawPaw Gene]

A fully charged battery will not freeze until around 76 below 0. An uncharged battery will freeze at 32.
"gene"

[sinkermaker]

I leave mine in my boat

[Potatoe]

Mine are all plugged in and should be in float mode. We are going to be -10 F - not worried but this makes me think about it

[speckfinder]

Waste of time and energy to bring them in. But if it makes you feel good........

[kycreek]

My boat/battery’s stay plugged in a cold barn

[Barnacle Bill]

Another good reason for an on-board charger.

[Retired2Fish]

I have taken mine in before if not using the boat for awhile but not sure if it was necessary.