<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">That's way too many strings, and as T105s die, they start using more water and boiling as their efficiency drops. I would only use sealed batteries if maintenance is a real issue. Sealed batteries cost twice as much and lost half as long. Allan suggested them and I agree in the previous case, because no one will be there for several months at a time.<div><div>I'd put a nice set of HUPs in to get the same or more amp hours. Efficiency will be much better, and they'll have a battery that will last 20 years.</div><div><br></div><div>Ray Walters</div><div><br></div><div><div><div>On Oct 11, 2012, at 1:45 PM, Mark Dickson wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
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<div class="Section1"><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">Sorry not to hijack, but. . <o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">I am sort of in the same situation. . .<o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">I am replacing a worn out battery bank (24
off-brand T-105s in six strings of 4) with nice new set of AGMs (3 strings of
4). It has a solar array and Whisperer 200 turbine charging the bank and
no generator. Customer says the old batteries which are pretty worn, were
always boiling and losing water. I tested all the cells with a hydrometer
on my last visit and found no obviously dead cells but all of them seemed week
with some visual sulfation. I am thinking the bad batteries are
most likely the culprit, but I would like some ideas on what and how to test
both the C40 and Whisper controller to make sure they were not causing the
overcharging. Any ideas on what tests to perform? <o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<div><p class="MsoNormal"><font size="2" color="navy" face="Comic Sans MS"><span style="font-size:10.0pt;font-family:"Comic Sans MS";color:navy">Best regards,<o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Comic Sans MS"><span style="font-size:10.0pt;font-family:"Comic Sans MS";color:navy"><o:p> </o:p></span></font></p><p class="MsoNormal"><st1:personname w:st="on"><font size="2" color="navy" face="Comic Sans MS"><span style="font-size:10.0pt;font-family:"Comic Sans MS";
color:navy">Mark Dickson</span></font></st1:personname><font size="2" color="navy" face="Comic Sans MS"><span style="font-size:10.0pt;font-family:"Comic Sans MS";
color:navy">,</span></font><font size="3" color="navy" face="Times New Roman"><span style="font-size:12.0pt;font-family:"Times New Roman";color:navy"><o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="ArialMT"><span style="font-size:
10.0pt;font-family:ArialMT;color:navy">NABCEP Certified Solar PV Installer
™<o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Comic Sans MS"><span style="font-size:10.0pt;font-family:"Comic Sans MS";color:navy">Oasis Montana
Inc.<o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy"><span><image001.jpg></span></span></font><st1:personname w:st="on"><b><font size="1" face="Arial"><span style="font-size:8.0pt;font-family:Arial;font-weight:
bold">Mark Dickson</span></font></b></st1:personname><b><font size="1" face="Arial"><span style="font-size:8.0pt;font-family:Arial;font-weight:bold">,
Certified Solar PV Installer</span></font></b><b><font size="1" color="navy" face="Arial"><span style="font-size:8.0pt;font-family:Arial;color:navy;
font-weight:bold"><o:p></o:p></span></font></b></p><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
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<div>
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<hr size="2" width="100%" align="center" tabindex="-1">
</span></font></div><p class="MsoNormal"><b><font size="2" color="black" face="Tahoma"><span style="font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold">From:</span></font></b><font size="2" color="black" face="Tahoma"><span style="font-size:10.0pt;font-family:Tahoma;
color:windowtext"> <a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b><span style="font-weight:
bold">On Behalf Of </span></b>Allan Sindelar<br>
<b><span style="font-weight:bold">Sent:</span></b> Thursday, October 11, 2012
1:23 PM<br>
<b><span style="font-weight:bold">To:</span></b> <st1:personname w:st="on">RE-wrenches</st1:personname><br>
<b><span style="font-weight:bold">Subject:</span></b> Re: [<st1:personname w:st="on">RE-wrenches</st1:personname>] Old School 12V Independent System?</span></font><font size="3" color="black" face="Times New Roman"><span style="font-size:12.0pt;
font-family:"Times New Roman";color:windowtext"><o:p></o:p></span></font></p>
</div><p class="MsoNormal"><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt"><o:p> </o:p></span></font></p>
<div><p class="MsoNormal"><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt">Bill,<br>
Give her sealed batteries for this application. We like Concorde SunXtender,
both because the few sets that have been in operation off grid have shown
exceptional life (we have one series pair of PVX-2580Ts going into its 13th
year still in good shape) and are available in sizes that easily replace
standard flooded sizes. Contact me off list for a good distributor referral.<br>
<br>
If indeed they have "abused the batteries to death" then the
batteries are indeed dead. I'd suggest that you sell her replacement sealed
batteries. They'll arrive charged. Thus during daytime you can use the array
itself and the full batteries to test the C-40, and set proper regulation
voltage at the same time. Save the customer a second service call, make you a
decent sale, worth the trip.<br>
<br>
Just my $.02001 <br>
Allan<br>
<o:p></o:p></span></font></p>
<div><p class="MsoNormal"><b><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt;font-weight:bold">Allan Sindelar</span></font></b><br>
<font size="2"><span style="font-size:10.0pt"><a href="mailto:Allan@positiveenergysolar.com"><font color="#000099"><span style="color:#000099">Allan@positiveenergysolar.com</span></font></a></span></font><br>
<font size="2"><span style="font-size:10.0pt">NABCEP Certified Photovoltaic
Installer<br>
NABCEP Certified Technical Sales Professional<br>
<st1:state w:st="on"><st1:place w:st="on">New Mexico</st1:place></st1:state>
EE98J Journeyman Electrician<br>
Founder and Chief Technology Officer<br>
<b><span style="font-weight:bold">Positive Energy, Inc.</span></b><br>
<st1:street w:st="on"><st1:address w:st="on">3209 Richards Lane</st1:address></st1:street>
(note new address)<br>
<st1:place w:st="on"><st1:city w:st="on">Santa Fe</st1:city>, <st1:state w:st="on">New
Mexico</st1:state> <st1:postalcode w:st="on">87507</st1:postalcode></st1:place><br>
<b><span style="font-weight:bold">505 424-1112</span></b><br>
<a href="http://www.positiveenergysolar.com/" target="_blank">www.positiveenergysolar.com</a><u1:p></u1:p></span></font>
<o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;margin-right:722.25pt;
mso-margin-bottom-alt:auto"><font size="2" color="black" face="Calibri"><st1:place u2:st="on"><st1:city u2:st="on"></st1:city><st1:state u2:st="on"></st1:state><st1:postalcode u2:st="on"></st1:postalcode></st1:place><span style="font-size:11.0pt"><o:p> </o:p></span></font></p><p class="MsoNormal"><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt"><o:p> </o:p></span></font></p>
</div><p class="MsoNormal"><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt">On 10/11/2012 1:07 PM, William Dorsett wrote:<o:p></o:p></span></font></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt" cite="mid:002701cda7e3$b9807230$2c815690$@net" type="cite"><!--[if gte mso 9]><xml>
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</xml><![endif]--><p class="MsoNormal"><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt">A client has an old school 12VDC remote cabin,
(SunDanzer fridge, Sureflo pump, 12VDC lights and fans) which she visits
perhaps every three months. It isn’t her interest to clean terminals,
much less run the generator through one of her two days of country quiet to
equalize the battery bank. The consequence is that she (and guests who borrowed
the cabin) have abused the batteries to death. The first suggestion will be a
maintenance agreement…yes. First I need to test the Trace C-40 charge
control and would appreciate suggestions on choosing a portable 0-16V variable
voltage power supply to check its function and set points etc. It should be as
easy as a couple batteries in series, multimeter and a potentiometer. Thanks
for your thoughts.<o:p></o:p></span></font><u1:p></u1:p></p><p class="MsoNormal"><u1:p><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></u1:p></p><p class="MsoNormal"><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt">Bill Dorsett<o:p></o:p></span></font><u1:p></u1:p></p><p class="MsoNormal"><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt">Sunwrights<o:p></o:p></span></font><u1:p></u1:p></p><p class="MsoNormal"><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt">1715 <st1:city w:st="on"><st1:place w:st="on">Leavenworth</st1:place></st1:city><o:p></o:p></span></font><u1:p></u1:p></p><p class="MsoNormal"><st1:place w:st="on"><st1:city w:st="on"><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt">Manhattan</span></font></st1:city>,
<st1:state w:st="on">KS</st1:state></st1:place><u1:p></u1:p><o:p></o:p></p><p class="MsoNormal"><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt">785/539-1956 Home/Office<o:p></o:p></span></font><u1:p></u1:p></p><p class="MsoNormal"><u1:p><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></u1:p></p><p class="MsoNormal"><font size="3" color="black" face="Times New Roman"><span style="font-size:12.0pt;font-family:"Times New Roman""><br>
<br>
<br>
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