<div dir="ltr"><div dir="ltr"><div>I would tend to agree with Ray's analysis, with one question:</div><div><ul><li>Does the Eq timer reset to 0 when the voltage dips? It should basically hold the time the batteries were at Eq voltage when it drops below, sort of putting the EQ timer on hold until the voltage comes back up. So eventually given enough sun and long enough day, or long enough generator run time, the mate should still report that equalization was reached.</li><li>If it doesn't reach equalization do that even though the battery voltage is being attained for enough time, then it might suggest a Mate issue...<br></li></ul><div>Howie<br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 28, 2020 at 2:12 PM Ray <<a href="mailto:ray@solarray.com" target="_blank">ray@solarray.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>I would add to the chorus that it probably is a battery issue.
Here are the symptoms that lead to that conclusion:</p>
<p> A) it started occurring recently, <br>
B) it is somewhat intermittent, <br>
C) the system has aging L 16s (failures at 4 to 5 years are
pretty common)<br>
D) they are the Trojan RE series (dead cells at less than 2 years
has been documented several times on this list)<br>
E) the customer is trying to equalize regularly. (which causes
over heating, and accelerates cell failures)<br>
</p>
<p>Besides checking battery voltages, an infared camera can quickly
show over heating, bad cells. Also, I would advise the customer
to only equalize when the batteries are unequal, based on specific
gravity readings.<br>
</p>
<pre cols="72">Ray Walters
Remote Solar
303 505-8760</pre>
<div>On 4/28/20 12:20 PM, Dave Tedeyan
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Steve and Jerry,
<div>Thanks for the suggestions. I'll have to take a closer look
at the battery bank next time I am out there. </div>
<div>The solar setup is 4 strings of 3 kyocera 270's into each
charge controller. So that is almost 65A @50V coming out of
each charge controller for bulk. The parallel battery strings
all have the same length of premade cable, so current
should be balanced (unless there is a dead cell or two in
there...).</div>
<div>Cheers, </div>
<div>Dave<br clear="all">
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<div dir="ltr" class="gmail_attr">On Tue, Apr 28, 2020 at 11:52
AM Jerry Shafer <<a href="mailto:jerrysgarage01@gmail.com" target="_blank">jerrysgarage01@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="auto">Sounds like a battery issue at first glance,
as you EQ a battery it gets warm or even hot and this will
effect ability to charge. If e en one of the L-16 is not
exactly the same voltage you will not get to EQ untill
another battery over voltages to show your overall volts.
Need to look at each battery volts under this charge
condition. Also if you have a battery acting up be very
careful working around them.
<div dir="auto">Jerry</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Apr 28, 2020, 6:50
AM Dave Tedeyan <<a href="mailto:dtedeyan@taitem.com" target="_blank">dtedeyan@taitem.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Hi All,
<div><br>
</div>
<div>I've got an outback system (Radian 8048A, 2 FM80,
16 Trojan L16RE-B) where when the customer equalizes,
the batteries hover right around the EQ voltage, but
will often dip to 0.1v less. Because of this, the EQ
timer does not count down properly, and so left to its
own devices the system would equalize for way longer
than it should, potentially forever. This will happen
when doing an EQ from the solar on a bright sunny day,
or the generator, or both. The customer can manually
keep track of the time and manually stop the EQ after
3 hours, but that is not ideal. Has anyone dealt with
this before and have any suggestions on how they fixed
it? </div>
<div><br>
</div>
<div>This system is 3-4 years old, and the issue only
started in the past year or so.</div>
<div><br>
</div>
<div>Cheers, </div>
<div>Dave</div>
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