Subject: [Shop-talk] AGM batteries: Protect from freezing?

From: Philip Ethier <[email-masked]>
Date: Fri, 14 Nov 2025 01:34:49 -0600

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Absorbed Gas Mat batteries:

If you leave a vehicle outside all winter in a cold climate without
charging the AGM batteries, will they be ruined by the cold?

I know that regular lead-acid batteries can freeze up, but I don't know
about AGM batteries.

-- 
Phil Ethier, West Side, Saint Paul Minnesota, USA
2006 Gulf Stream Conquest Super C, 8.1, white
2011 Cayman 2.9 PDK, white
2021 Ford F-150 3500cc twin turbo, white
1991 Caterham 1700 Super Sprint, not white
www.mnautox.com

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<div dir=3D"ltr"><div><div class=3D"gmail_default" style=3D"font-family:mon=
ospace">Absorbed Gas Mat batteries:</div><div class=3D"gmail_default" style=
=3D"font-family:monospace"><br></div><div class=3D"gmail_default" style=3D"=
font-family:monospace">If you leave a vehicle outside all winter in a cold =
climate without charging the AGM batteries, will they be ruined=C2=A0by the=
 cold?</div><div class=3D"gmail_default" style=3D"font-family:monospace"><b=
r></div><div class=3D"gmail_default" style=3D"font-family:monospace">I know=
 that regular lead-acid batteries can freeze up, but I don&#39;t know about=
 AGM batteries.</div><br clear=3D"all"></div><div><br></div><span class=3D"=
gmail_signature_prefix">-- </span><br><div dir=3D"ltr" class=3D"gmail_signa=
ture" data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div dir=3D"ltr">=
<div dir=3D"ltr"><div dir=3D"ltr"><div><span style=3D"color:rgb(0,0,0);font=
-size:12.8px;background-color:rgb(255,255,255)"><font face=3D"monospace">Ph=
il Ethier, West Side, Saint Paul Minnesota, USA</font></span></div><div><sp=
an style=3D"font-family:monospace;color:rgb(0,0,0)">2006 Gulf Stream Conque=
st Super C, 8.1, white</span></div><div><span style=3D"color:rgb(0,0,0);bac=
kground-color:rgb(255,255,255)"><font face=3D"monospace">2011 Cayman 2.9 PD=
K, white</font></span></div><div><span style=3D"color:rgb(0,0,0);background=
-color:rgb(255,255,255)"><font face=3D"monospace">2021 Ford F-150 3500cc tw=
in turbo, white</font></span></div><div><span style=3D"background-color:rgb=
(255,255,255)"><font face=3D"monospace">1991 Caterham 1700 Super Sprint, no=
t white</font><br style=3D"color:rgb(0,0,0);font-family:verdana,geneva,luci=
da,&quot;lucida grande&quot;,arial,helvetica,sans-serif"><a href=3D"http://=
www.mnautox.com/" style=3D"color:rgb(0,24,57);font-family:verdana,geneva,lu=
cida,&quot;lucida grande&quot;,arial,helvetica,sans-serif" target=3D"_blank=
">www.mnautox.com<br></a></span><br></div></div></div></div></div></div></d=
iv>

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