<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Helvetica;
panose-1:2 11 6 4 2 2 2 2 2 4;}
@font-face
{font-family:Helvetica;
panose-1:2 11 6 4 2 2 2 2 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Georgia;
panose-1:2 4 5 2 5 4 5 2 3 3;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
span.apple-style-span
{mso-style-name:apple-style-span;}
span.apple-converted-space
{mso-style-name:apple-converted-space;}
span.EmailStyle21
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:black;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple style='word-wrap: break-word;-webkit-nbsp-mode: space;-webkit-line-break: after-white-space'><div class=WordSection1><p class=MsoNormal><font size=4 color=black face=Calibri><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'>I believe Roy has a customer with a huge battery bank that air conditioned the battery room. He ran the numbers and the air conditioning actually made sense.<o:p></o:p></span></font></p><p class=MsoNormal><font size=4 color=black face=Calibri><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=4 color=black face=Calibri><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'>Bob Ellison<o:p></o:p></span></font></p><p class=MsoNormal><font size=4 color=black face=Calibri><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></font></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";font-weight:bold'>From:</span></font></b><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> re-wrenches-bounces@lists.re-wrenches.org [mailto:re-wrenches-bounces@lists.re-wrenches.org] <b><span style='font-weight:bold'>On Behalf Of </span></b>R Ray Walters<br><b><span style='font-weight:bold'>Sent:</span></b> Thursday, April 21, 2011 4:50 PM<br><b><span style='font-weight:bold'>To:</span></b> RE-wrenches<br><b><span style='font-weight:bold'>Subject:</span></b> Re: [RE-wrenches] Air conditioning for batteies in high temperature climate<o:p></o:p></span></font></p></div></div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Are you using temperature compensation? It lowers the voltage when its hot.<o:p></o:p></span></font></p><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Also, have you considered setting the batteries in a below ground vault? I've had good luck with in floor battery boxes.<o:p></o:p></span></font></p></div><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Finally, AGMs and L16s just don't last very long anyway. AGMs maybe 3 years, and L16s I've seen die in under 5 years and we get to 15 below zero.<o:p></o:p></span></font></p></div><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>My suggestion: temp comp, ground vault, HUP or equivalent cycle life.<o:p></o:p></span></font></p></div><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p><div><div><p class=MsoNormal><font size=1 color=black face=Helvetica><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black'>R. Walters<o:p></o:p></span></font></p></div><div><p class=MsoNormal><font size=1 color=black face=Helvetica><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black'><a href="mailto:ray@solarray.com">ray@solarray.com</a><o:p></o:p></span></font></p></div><div><p class=MsoNormal><font size=1 color=black face=Helvetica><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black'>Solar Engineer<o:p></o:p></span></font></p></div><div><p class=MsoNormal><font size=1 color=black face=Helvetica><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></font></p></div><div><p class=MsoNormal><font size=1 color=black face=Helvetica><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></font></p></div><p class=MsoNormal><font size=1 color=black face=Helvetica><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black'><br><br></span></font><o:p></o:p></p></div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p><div><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>On Apr 21, 2011, at 1:22 PM, Starlight Solar, Larry Crutcher wrote:<o:p></o:p></span></font></p></div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><br><br><o:p></o:p></span></font></p><div><div><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hello Battery Wrenches,</span></font><font size=4 face=Helvetica><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif"'><o:p></o:p></span></font></p></div><div><p class=MsoNormal><font size=4 face=Helvetica><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif"'> <o:p></o:p></span></font></p></div><div><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Over the years I have had several battery banks in Baja and Sonora Mexico fail in just 36 to 48 months. These have been L16 or 8D AGM or flooded banks, 24 and 48 volt systems. The charging systems are working properly and programmed to manufacturer recommended set points and discharges are rarely over 30% DoD. Some batteries are only used on weekends, some are discharged daily. I believe what is affecting the short life is the high temperature they live in for 5 months each year. Temps. can hit 115 F in vented battery rooms. I have been thinking about a small air conditioner and insulated battery box to keep the battery at no more than 80 F. There are some portable units that draw about 600 watts and the run time would be very little with a highly insulated enclosure. There is ample power to do this on the home I am changing batteries in now. Has anyone done this and gained longer battery life?</span></font><font size=4 face=Helvetica><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif"'><o:p></o:p></span></font></p></div><div><p class=MsoNormal><font size=4 face=Helvetica><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif"'> <o:p></o:p></span></font></p></div><div><p class=MsoNormal><font size=2 face=Verdana><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Best Regards,</span></font><font size=4 face=Helvetica><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif"'><o:p></o:p></span></font></p></div><div><p><font size=2 face=Verdana><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Larry Crutcher<br><a href="http://www.starlightsolar.com/">Starlight Solar Power Systems</a><br></span></font><font size=1 face=Georgia><span style='font-size:7.5pt;font-family:"Georgia","serif"'><br><em><i><font color=red face=Georgia><span style='font-family:"Georgia","serif";color:red'>powered by</span></font></i></em><span class=apple-converted-space><i><font color=red><span style='color:red;font-style:italic'> </span></font></i></span></span></font><em><b><i><font size=4 color=red face=Georgia><span style='font-size:13.5pt;font-family:"Georgia","serif";color:red;font-weight:bold'>S</span></font></i></b></em><em><b><i><font size=2 color=red face=Georgia><span style='font-size:10.0pt;font-family:"Georgia","serif";color:red;font-weight:bold'>TARLIGHT</span></font></i></b></em><font size=2 color=red face=Georgia><span style='font-size:10.0pt;font-family:"Georgia","serif";color:red'>™</span></font><font size=4 face=Helvetica><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif"'><o:p></o:p></span></font></p></div><p class=MsoNormal style='margin-bottom:13.5pt'><font size=4 face=Helvetica><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif"'>_______________________________________________<br>List sponsored by Home Power magazine<br><br>List Address:<span class=apple-converted-space> </span><a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br><br>Options & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>List-Archive:<span class=apple-converted-space> </span><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br><br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a><br><br>Check out participant bios:<br><a href="http://www.members.re-wrenches.org/">www.members.re-wrenches.org</a><o:p></o:p></span></font></p></div></div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p></div></div></body></html>