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<div class=Section1>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'>Jay<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'>Higher
charge settings, proper absorb times (do the math) and absorb voltage settings,
diligent maintenance and twice yearly good EQs, on a single series connected,
properly sized string, of quality L16s, will yield at least 10 to 12 years. Maybe
not on a Deka, Exide or even Interstate which have thinner plates than Trojan or
Surrette. I have seen some 14 year strings in use, though they were pretty well
exhausted.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'>Now I’m
only talking about single series banks. There is no hope for parallel banks
without a lot of extra time and work and even then not the life were talking
about here.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'>Remember
that 8 400 AH L16s in a 48 volt string is a rather small-small cabin, for
three days autonomy, so proper sizing is a must for good life. It’s really
about cycles because the positive plate is finite and at the hoped for end to its
life there is really no positive plate left. Most of the batteries out there
however will die from sulfation suffocation long before this end.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><b><font size=2 color=green face="Arial Rounded MT Bold"><span
style='font-size:11.0pt;font-family:"Arial Rounded MT Bold";color:green;
font-weight:bold'> Tom Duffy</span></font><font color=green><span
style='color:green'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><i><font size=2 color="#99cc00" face="Arial Rounded MT Bold"><span
style='font-size:11.0pt;font-family:"Arial Rounded MT Bold";color:#99CC00;
font-style:italic'> Systems Design Engineer</span></font><font
color="#99cc00"><span style='color:#99CC00'><o:p></o:p></span></font></i></p>
<p class=MsoNormal><font size=2 color=green face="Arial Rounded MT Bold"><span
style='font-size:11.0pt;font-family:"Arial Rounded MT Bold";color:green'><img
width=218 height=80 id="_x0000_i1026" src="cid:image002.jpg@01CB1896.96A7A000"></span></font><font
color=green><span style='color:green'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=green face="Arial Rounded MT Bold"><span
style='font-size:11.0pt;font-family:"Arial Rounded MT Bold";color:green'> <a
href="mailto:tom@thesolar.biz">tom@thesolar.biz</a></span></font><font
color=green><span style='color:green'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=green face="Arial Rounded MT Bold"><span
style='font-size:11.0pt;font-family:"Arial Rounded MT Bold";color:green'>
575-539-2111 X 301</span></font><font color=green><span style='color:green'><o:p></o:p></span></font></p>
<p class=MsoNormal><em><i><font size=2 color=teal face="Arial Rounded MT Bold"><span
style='font-size:11.0pt;font-family:"Arial Rounded MT Bold";color:teal'>Although
no trees were killed in the sending of this message, a large number of
electrons were terribly inconvenienced.</span></font></i></em><font
color=green face="Arial Rounded MT Bold"><span style='font-family:"Arial Rounded MT Bold";
color:green'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=green face=Calibri><span
style='font-size:11.0pt;color:green'> </span></font><font size=3
color=green face="Times New Roman"><span style='font-size:12.0pt;font-family:
"Times New Roman";color:green'><o:p></o:p></span></font></p>
<p class=MsoNormal><strong><b><font size=2 color="#993300" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#993300'>Confidentiality
Notice</span></font></b></strong><font color="#993300"
face="Arial Rounded MT Bold"><span style='font-family:"Arial Rounded MT Bold";
color:#993300'>:</span></font><font color=green face="Arial Rounded MT Bold"><span
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color:green'><o:p></o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
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>jay peltz<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, June 30, 2010
7:20 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]
Interstate UL-16 HC problem</span></font><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>HI
Tom,<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>Are
you saying that you are seeing 14 years on a single string of L-16's?<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>If
so I would like to hear your charging recommendations.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>thanks,<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>jay<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>peltz
power<o:p></o:p></span></font></p>
</div>
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<div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>On
Jun 30, 2010, at 9:32 AM, The Office of Tom Duffy wrote:<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><br>
<br>
<o:p></o:p></span></font></p>
<u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="City"><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"><!--[if gte mso 9]><xml>
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<div link=blue vlink=purple>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'>Bob<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'>Yes
the problem is hard sulfation due to chronically under charging. The absorb
time and voltage is the most critical charge mode for charging batteries. The default
settings on inverters and charge controllers are always way too short, so they
hold the batteries in absorb for a little while, then go to float, leaving the
batteries under charged forever, thus we get hard sulfation. This is what you
have here. Typically two parallel strings will yield about 6 ½ years of life in
a system that is used off grid. While a single series string will yield 10 to
14 years (properly maintained) 14 years is not the rule however. <u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'>A bit
of due diligence is now required to get these back, (and they may not be worth
it). Separate the two strings and give them 62 volts for 10 hours; you’ll have
to watch them so they don’t get too hot. Set the absorb settings below and give
them about three weeks. If there is some improvement in capacity, another EQ;
61 volts for two hours may just do it. <u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'>With
the Magnum 48 volt inverter I calculate the absorb time at 5 hours, now
typically the absorb charge should be about 58.8 volts but, most batteries die
because of under charge so I would set the absorb voltage at 59.4. You may have
to update the software for the Magnum control panel to get more programming
flexibility.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'>The
MX60 with 6 of the 175s should be set to absorb for as long as possible, I
think the last software version allows 4 hours. I calculated absorb time with
this setup is 19.6 hours which is not possible, so just keep the controller
from going to float for as long as you can.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><st1:city u4:st="on"><st1:place u4:st="on"><st1:City w:st="on"><st1:place
w:st="on"><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'>Concord</span></font></st1:place></st1:City></st1:place></st1:city><font
size=3 color=green face="Arial Rounded MT Bold"><span style='font-size:12.0pt;
font-family:"Arial Rounded MT Bold";color:green'> makes a real nice 915 AH 2
volt cell which should give a decade plus life, for the next bank. I would
avoid parallel strings at all cost. If you feel this is too large a bank then
use the 660 AH 2 volt. You can always call me 575-539-2111 if you have
questions. I have been in the battery business almost 45 years.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 color=green face="Arial Rounded MT Bold"><span
style='font-size:12.0pt;font-family:"Arial Rounded MT Bold";color:green'><u1:p> </u1:p></span></font><o:p></o:p></p>
<div>
<p class=MsoNormal><b><font size=2 color=green face="Arial Rounded MT Bold"><span
style='font-size:11.0pt;font-family:"Arial Rounded MT Bold";color:green;
font-weight:bold'> Tom Duffy</span></font></b><o:p></o:p></p>
<u1:p></u1:p>
<p class=MsoNormal><i><font size=2 color="#99cc00" face="Arial Rounded MT Bold"><span
style='font-size:11.0pt;font-family:"Arial Rounded MT Bold";color:#99CC00;
font-style:italic'> Systems Design Engineer</span></font></i><o:p></o:p></p>
<u1:p></u1:p>
<p class=MsoNormal><font size=2 color=green face=Calibri><span
style='font-size:11.0pt;color:green'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=green face="Arial Rounded MT Bold"><span
style='font-size:11.0pt;font-family:"Arial Rounded MT Bold";color:green'> <a
href="mailto:tom@thesolar.biz">tom@thesolar.biz</a></span></font><o:p></o:p></p>
<u1:p></u1:p>
<p class=MsoNormal><font size=2 color=green face="Arial Rounded MT Bold"><span
style='font-size:11.0pt;font-family:"Arial Rounded MT Bold";color:green'>
575-539-2111 X 301</span></font><o:p></o:p></p>
<u1:p></u1:p>
<p class=MsoNormal><em><i><font size=2 color=teal face="Arial Rounded MT Bold"><span
style='font-size:11.0pt;font-family:"Arial Rounded MT Bold";color:teal'>Although
no trees were killed in the sending of this message, a large number of
electrons were terribly inconvenienced.</span></font></i></em><o:p></o:p></p>
<u1:p></u1:p>
<p class=MsoNormal><font size=2 color=green face=Calibri><span
style='font-size:11.0pt;color:green'> </span></font><o:p></o:p></p>
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