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 > Do RV Batteries Freeze in the Winter?

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time2roll

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Posted: 10/15/20 09:52am Link  |  Quote  |  Print  |  Notify Moderator

TenOC wrote:

Big C wrote:

Sadly we will be parked outside in a storage lot with no source for electricity..
Then store them in a warm place, but not directly on concrete. Why not on concrete, I do not know but have always been told to not store batteries directly on concrete.
Only reason with a modern battery is you might stain the concrete. Put some wood down if needed.


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cdru

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Posted: 10/15/20 10:02am Link  |  Quote  |  Print  |  Notify Moderator

I live in Northern Minnesota. I fully charge the batteries, leave them in our travel trailer,disconected, all winter. Our pontoon boat with two batteries is treated the same. Never had a battery freeze in over twenty years! Cdru

FLY 4 FUN

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Posted: 10/15/20 10:10am Link  |  Quote  |  Print  |  Notify Moderator

Ensure they are fully charged, then disconnect the terminals (mark first) and you will be fine. Also be sure to check the fluid levels in the cells before charging them up.


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Big C

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Posted: 10/15/20 10:16am Link  |  Quote  |  Print  |  Notify Moderator

Specific question to FLY 4 FUN, so you just let the batteries sit in your RV for the winter after charging and disconnecting? FYI ours are AGM, sealed batteries.


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Boon Docker

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Posted: 10/15/20 10:20am Link  |  Quote  |  Print  |  Notify Moderator

FLY 4 FUN wrote:

Ensure they are fully charged, then disconnect the terminals (mark first) and you will be fine. Also be sure to check the fluid levels in the cells before charging them up.


My batteries are fully charged in the late fall then disconnected and left until early spring when they get recharged. They lose less than 10% charge outside in the 7 months of winter.
They are now 8 years old and still going strong.

MARKW8

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Posted: 10/15/20 11:00am Link  |  Quote  |  Print  |  Notify Moderator

The OP stated they are AGM batteries. If fully charged then disconnected, they should keep a near full charge. The AGM battery in my Corvette sat from mid October 19 till after memorial day 2020. It started the car easily.

mark

rk911

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Posted: 10/15/20 11:02am Link  |  Quote  |  Print  |  Notify Moderator

Big C wrote:

Thanks for the quick response. Sadly we will be parked outside in a storage lot with no source for electricity. Even worse our generator was left in Mazatlan ( as it was being repaired ) when we left mid March so can't even use that.

then i'd pull them and put them on a battery minder in your garage/shed.


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Posted: 10/15/20 11:19am Link  |  Quote  |  Print  |  Notify Moderator

TenOC wrote:

Big C wrote:

Sadly we will be parked outside in a storage lot with no source for electricity..


Then store them in a warm place, but not directly on concrete. Why not on concrete, I do not know but have always been told to not store batteries directly on concrete.


If you battery was made more than 75 years ago it might have a hard rubber case, those had a problem with concrete. Otherwise, drop the old wives tale.





Sjm9911

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Posted: 10/15/20 11:24am Link  |  Quote  |  Print  |  Notify Moderator

Mine had a hairline crack in it this year after the winter. I assumed it was from the cold. But who knows. It was older so may not have been able to have a full charge. I still keep my batteries on the TT, i do charge them monthly.


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ReneeG

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Posted: 10/15/20 11:43am Link  |  Quote  |  Print  |  Notify Moderator

dougrainer wrote:

Charged batteries will not freeze. Low or dead batteries will freeze. Unless you can gurantee that the batteries will stay fully charged, I would pull them and install a trickle charger if not inside a heated area. Doug


Agree!

Hubby maintains ours religiously throughout the winter AND keeps the FW plugged in. Never have had a problem.


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