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<DIV><FONT face=Arial size=2>Jesse, </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>It looks like you said the battery was replaced
with Rolls. If so, good choice. Without extensive regular testing, keeping
a log book, and possessing the knowledge to do it right, you will not
really know if you are fully charging the battery to 100% SOC. From the
information in your post, it leads me to think that this is the
case.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>IMO, the single most important thing you can do for
this customer is install a battery monitor system. I recommend the trimetric.
While this will not take the place of skilled battery testing, it will give you
far more information than you have ever had. This is where to start. You will
then know how high and low the voltage got each day. You will see how many AH
are removed and replaced each day. You will have eyes to see your battery health
like never before.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Please post the size of the battery bank, the
cables and length used to connect the inverter and all the generator
information. Perhaps we can help more.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Larry</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>----- Original Message ----- </DIV>
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<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=dahlsolar@gmail.com href="mailto:dahlsolar@gmail.com">Jesse Dahl</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@lists.re-wrenches.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, December 28, 2010 11:04
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [RE-wrenches] Trace inverters
undercharging batteries.</DIV>
<DIV><BR></DIV>
<DIV>Wrenches,</DIV>
<DIV> </DIV>
<DIV>I have been in contact with a person living off-grid in Northern
MN. She had some problems with her system and called me. I teach a
solar class at a local community college and have been helping her in my free
time (free of course!). </DIV>
<DIV> </DIV>
<DIV>Some of her batteries froze last winter and she said she dumped out the
electrolyte and put new in........ (6 V Rolls)</DIV>
<DIV> </DIV>
<DIV>Her main concern was the batteries never fully charging. She has a
very nice Kohler gen, but from what I have been told, the Trace inverters may
be part of the problem with the batteries undercharging. I have limited
experience with off grid applications and any help would be greatly
appreciated. </DIV>
<DIV> </DIV>
<DIV>Jesse</DIV>
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