Batteries in freezing temperatures?

Not if they are charged. A fully charged battery is good to down around -90F.

Agree with jkwilson, but may be best to disconnect if storing, as a small amount of parasitic draw can slowly discharge them.

Jerry

Thanks for the quick replies--there is a plug-in available for occasional use only so once the batteries get down to the area of
(+ or -) 12 volts I plug her in again for a day or so.
Thanks again,
Warren.

Cold snap, snow on the daffodils! Local RVers panic! :)

Actually, batteries suffer more damage from heat exposure.

The colder the better for lead acid cells. -77 C is the freezing point for a fully charged battery. If it is that cold, you may have a lot more to worry about than batteries.

I switch my batteries OFF and leave them on my trailer tongue during the winter months If I see them get below 12.5VDC I will throw them on a trikle charge unit... If they ever get down to 12.0 VDC I will do a full 100% charge state on them...

My original set of 12V 85AH Interstate Batteries lasted from 2008 throuh 2014 doing this...

I replaced them in 2015 with two groups of two 6V batteries in series...

Roy Ken

No good reason to let a battery in storage get down to 12.0

If your wet cell batteries are discharged AND frozen,(or at a very low state of charge) don't try to charge them until they thaw out and/or warm up well above their freezing point.

Chum lee

MrWizard wrote:
No good reason to let a battery in storage get down to 12.0

What if one has a mean disposition and just wants to take it out on a defenseless battery?