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<p class=MsoNormal><span style='color:#1F497D'>Tommy and Wrenches,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>We have one off-grid customer
who is well into his seventies. He has an old/upgraded 12V system, originally
installed by Windy in the late 1980s. (He’s the only customer we care for
who is still using his original basic Trace 1512 – the original black box
from 1988, not the DR1512 – inverter; “if it ain’t broke, don’t
fix it”.) The system uses about 800W of mixed panels, an FM60 and a DC
generator with a Mark VI Field Controller from the old days of Home Power
homebrew articles. He does not want battery maintenance in his life.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>After going through several sets
of other batteries, including the recycled GNB Absolyte IIs that Northwest
Energy Storage offered in the late 1990s, we installed four Concorde PVX-2580s (12V,
258 A/hr @24 hr. rate) in parallel for him in April 2004. They continue to work
well 6½ years later, in daily home use year-round.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>He also has a rental house next
door, with 450W of PV, a DR2424 and SB50 that we installed in 2000. This system
has two of the same Concorde PVX-2580s in series, for 255 A/hr at 24V. These
batteries also continue to perform well after nearly ten years of operation. (I
will talk with my customer about having the tenant do a simple amp-hour load
test of remaining functional capacity; if I get useful information, I’ll
post it here.)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Both systems have E-Meters, and
both the owner and the stable, long-term tenant know how to use the basic
functions to live within their energy budgets, so I am sure that this has
contributed to consistent good performance.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Like Warren of NAW&S, we
have never had a failure of a Concorde, other than user error.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>Allan Sindelar<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'><a
href="mailto:Allan@positiveenergysolar.com">Allan@positiveenergysolar.com</a></span><span
style='font-size:11.0pt;color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'>NABCEP
Certified Photovoltaic Installer</span><span style='font-size:11.0pt;
color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'>EE98J
Journeyman Electrician</span><span style='font-size:11.0pt;color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;color:#1F497D'>Positive
Energy, Inc.<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>3201 Calle
Marie<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>Santa Fe, New
Mexico 87507<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>505 424-1112<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'><a
href="http://www.positiveenergysolar.com/">www.PositiveEnergySolar.com</a></span><span
style='font-size:11.0pt;color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><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>On Behalf Of </b>Wind-sun.com<br>
<b>Sent:</b> Friday, October 16, 2009 10:53 AM<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>Of
all the AGM batteries that we have sold in the past, the only ones we would
recommend for critical applications are the Concorde PVX series. Been selling
them for over 10 years and have never had a single warranty claim.</span><span
style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>..................................................................................................<br>
Northern Arizona Wind & Sun - Electricity From The Sun Since 1979<br>
Solar Discussion Forum: <a href="http://www.wind-sun.com/ForumVB/">http://www.wind-sun.com/ForumVB/</a><br>
..................................................................................................<o:p></o:p></span></p>
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<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>-----
Original Message ----- <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='background:#E4E4E4'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'> <a href="mailto:jacoby_tom@hotmail.com"
title="jacoby_tom@hotmail.com">tom jacoby</a> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Hey
Daryl, <o:p></o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>We
plan/design for 30% DOD, to be recharged by the PV on a daily basis, with
limited generator run time (as needed). We understand the benefits of flooded
batteries, but don't always have the option due to the remote nature of several
of our projects, and are thus seeking the best sealed batteries.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Thanks
again,<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Tommy<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:9.0pt'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>> From: daryl_solar@yahoo.com<br>
> <br>
> hi tom<br>
> give us some information on the charge/discharge cycle the batteries will
experiance. <br>
> <br>
> For long life i like flooded batteries, and you can access the electrolite
to determine SOC i like AGM over gel, but have little experiance with either.
my experiance is the agm last longer than gel, and nither will last as long as
flooded. i have 10 year flooded, and they are still working, and I CAN NOT
remember sealed over 3 years ( AGM)<br>
> Darryl, <br>
> <br>
> --- On Thu, 10/15/09, tom jacoby <jacoby_tom@hotmail.com> wrote:<br>
> <br>
> > From: tom jacoby <jacoby_tom@hotmail.com><br>
> > <br>
> > Hello,<br>
> > SELF is considering new battery options for our off-grid<br>
> > projects (primarily health centers in Africa at this<br>
> > time). For the purpose of this post, assume an average<br>
> > 48V 500Ah battery bank. We prefer sealed batteries<br>
> > because maintenance/watering is not always available. <br>
> > <br>
> > Does anyone have any data or experience for with the<br>
> > following batteries? (To date we have been using the<br>
> > Deka MKs). Any real-world data you have on cycle life<br>
> > vs. depth of discharge would be great.<br>
> > <br>
> > 1. Universal Power Group (UPG) AGMs (i.e. UB 8D)<br>
> > <br>
> > 2. Power Battery PSG/AG product line (i.e. PSG-12255FT)<br>
> > <br>
> > 3. Lifeline (i.e. 8D or L16)4. Surrette AGMs<br>
> > <br>
> > I am welcome to other suggestions as well.<br>
> > <br>
> > <br>
> > Thanks in advance,<br>
<br>
<o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
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