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Re: [Shop-talk] Resurecting a totaly dead battery ?

To: "shop-talk@autox.team.net" <Shop-talk@autox.team.net>
Subject: Re: [Shop-talk] Resurecting a totaly dead battery ?
From: Jeff Scarbrough <fishplate@gmail.com>
Date: Sun, 21 Jun 2020 15:42:43 -0400
Delivered-to: mharc@autox.team.net
Delivered-to: Shop-talk@autox.team.net
References: <20200610150445.GA19107@panix.com> <4396193D-B5FC-4E20-9439-E4724176C225@comcast.net> <MWHPR06MB31519094A0E94F680E2A74BDA8830@MWHPR06MB3151.namprd06.prod.outlook.com>
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This reminds me of an older mechanic I worked with...His solution for
batteries, in the days when you could take the caps off, was to short the
terminals with a big heavy chunk of metal.  When it was fully discharged,
he'd turn it upside down and rinse all the sediment out of the cells.  Then
fill it with distilled water, and charge it back up.  I'm an engineer, not
a chemist, so I don't understand exactly how this works, but I saw it work
at least once to extend the life of a "dead" battery.

On Sun, Jun 21, 2020 at 3:32 PM Jack Brooks <jibrooks@live.com> wrote:

> Yes  a battery tender or battery minder would be you best bet.  Leave it
> on there for at least a week.  You may need to boost it with a charger if
> it won't get started for to lie voltage, but that is your best bet for
> saving the battery
>
> I use a BatteryMinder, likely the same basic circuitry as the tender,.  I
> have brought back some really weak batteries, some that would barely crank
> the engine over by leaving them on that "pulse" cycle for a week or more
> and now they work great even in the cold winter months.  What they claim it
> does, is break down the sulfate growth between cells, which is what
> eventually kills the battery.
>
> I usually put every battery in the garage on it for a day or two a year as
> a precaution.  The dying batteries are still running strong.
>
> Jack
>
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>
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<div dir=3D"ltr">This reminds me of an older mechanic I worked with...His s=
olution for batteries, in the days when you could take the caps off, was to=
 short the terminals with a big heavy chunk of metal.=C2=A0 When it was ful=
ly discharged, he&#39;d turn it upside down and rinse all the sediment out =
of the cells.=C2=A0 Then fill it with distilled water, and charge it back u=
p.=C2=A0 I&#39;m an engineer, not a chemist, so I don&#39;t understand exac=
tly how this works, but I saw it work at least once to extend the life of a=
 &quot;dead&quot; battery.</div><br><div class=3D"gmail_quote"><div dir=3D"=
ltr" class=3D"gmail_attr">On Sun, Jun 21, 2020 at 3:32 PM Jack Brooks &lt;<=
a href=3D"mailto:jibrooks@live.com";>jibrooks@live.com</a>&gt; wrote:<br></d=
iv><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bord=
er-left:1px solid rgb(204,204,204);padding-left:1ex">



<div>
<div dir=3D"auto" style=3D"direction:ltr;margin:0px;padding:0px;font-family=
:sans-serif;font-size:11pt;color:black">
Yes=C2=A0 a battery tender or battery minder would be you best bet.=C2=A0 L=
eave it on there for at least a week.=C2=A0 You may need to boost it with a=
 charger if it won&#39;t get started for to lie voltage, but that is your b=
est bet for saving the battery
<br>
</div>
<div dir=3D"auto" style=3D"direction:ltr;margin:0px;padding:0px;font-family=
:sans-serif;font-size:11pt;color:black">
<br>
</div>
<div dir=3D"auto" style=3D"direction:ltr;margin:0px;padding:0px;font-family=
:sans-serif;font-size:11pt;color:black;text-align:left">
I use a BatteryMinder, likely the same basic circuitry as the tender,.=C2=
=A0 I have brought back some really weak batteries, some that would barely =
crank the engine over by leaving them on that &quot;pulse&quot; cycle for a=
 week or more and now they work great even in the
 cold winter months.=C2=A0 What they claim it does, is break down the sulfa=
te growth between cells, which is what eventually kills the battery.<br>
<br>
</div>
<div dir=3D"auto" style=3D"direction:ltr;margin:0px;padding:0px;font-family=
:sans-serif;font-size:11pt;color:black">
I usually put every battery in the garage on it for a day or two a year as =
a precaution.=C2=A0 The dying batteries are still running strong.</div>
<div dir=3D"auto" style=3D"direction:ltr;margin:0px;padding:0px;font-family=
:sans-serif;font-size:11pt;color:black">
<br>
</div>
<div dir=3D"auto" style=3D"direction:ltr;margin:0px;padding:0px;font-family=
:sans-serif;font-size:11pt;color:black;text-align:left">
Jack<br>
<br>
</div>
</div>

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<br>
</blockquote></div>

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