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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=daryl_solar@yahoo.com href="mailto:daryl_solar@yahoo.com">Darryl
Thayer</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=re-wrenches@lists.re-wrenches.org
href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, December 10, 2010 8:00
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [RE-wrenches] To insulate a
battery bank</DIV>
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<TD vAlign=top>I have always been concerned with both high and low
temperature. On case of a battery bank failure it was insulated
with 1.5 inch foam (no acid problems) but the battery melted I think
from thermal runaway and <BR><BR>--- On <B>Fri, 12/10/10, bob ellison
<I><<A
href="mailto:reellison@gmail.com">reellison@gmail.com</A>></I></B>
wrote:<BR>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(16,16,255) 2px solid"><BR>From:
bob ellison <<A
href="mailto:reellison@gmail.com">reellison@gmail.com</A>><BR>Subject:
Re: [RE-wrenches] To insulate a battery bank<BR>To: "'RE-wrenches'"
<re-wrenches@lists.re-wrenches.org><BR>Date: Friday, December
10, 2010, 5:32 AM<BR><BR>
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<P class=yiv1045335225MsoNormal><FONT face=Calibri color=black
size=4><SPAN style="FONT-SIZE: 14pt; COLOR: black">With the amount of
lead in a battery bank it changes temperature very slowly. Both
gaining and losing heat is a very slow
process.</SPAN></FONT></P></DIV>
<P class=yiv1045335225MsoNormal><FONT face=Calibri color=black
size=4><SPAN style="FONT-SIZE: 14pt; COLOR: black">I have never
insulated battery banks, if in a cold area like here we size them
larger for the slower reaction time in the winter anyway. Part of the
reason being that I would bet that the acid would raise hell with the
insulation! </SPAN></FONT></P></DIV>
<P class=yiv1045335225MsoNormal><FONT face=Calibri color=black
size=4><SPAN style="FONT-SIZE: 14pt; COLOR: black">We regularly see
battery banks that are 40 degrees or so it presents no
problem.</SPAN></FONT>
<DIV></DIV>
<P class=yiv1045335225MsoNormal><FONT face=Calibri color=black
size=4><SPAN style="FONT-SIZE: 14pt; COLOR: black">If the exhaust fan
is running in a 70 degree building all it does is draw the warm air
over the top of the battery and not really warm them much anyway, in
an unheated building it will probably not make much
difference.</SPAN></FONT>
<DIV></DIV>
<P class=yiv1045335225MsoNormal><FONT face=Calibri color=black
size=4><SPAN style="FONT-SIZE: 14pt; COLOR: black">The only way that I
would put insulation in an unheated battery box is on the outside of
the plywood, away from the acid and gasses. I would also make it
removable in the summer.</SPAN></FONT>
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style="FONT-SIZE: 14pt"></SPAN></FONT>
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