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<p>Default efficiency on the TriMet was 94%, needs to be quite a bit
higher for Li+. I'd try 98%.</p>
<p>2nd point: Customers have always obsessed about meter readings:
they need to take a chill pill, and accept its not going to be
better than +/- 10% accuracy. Or get a Fortress battery with
built in SOC readings on the unit. <br>
</p>
<div class="moz-cite-prefix">On 9/2/2022 1:13 PM, Eric Smiley via
RE-wrenches wrote:<br>
</div>
<blockquote type="cite"
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<div dir="ltr">I am having the same problem - same situation. I am
going to tweak the efficiency value and see if it helps.
<div>
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data-smartmail="gmail_signature">
<div dir="ltr">
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<div dir="ltr">
<div dir="ltr"><span>
<p style="padding:5px
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src="https://viridianenergy.ca/sites/all/themes/viridian/emails/signature-line.png"
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style="font-size:1.2rem">Eric Smiley,</span></strong> Project
Manager<br>
<a href="mailto:eric@vecoop.ca"
style="color:rgb(255,255,255)"
target="_blank" moz-do-not-send="true"><span
style="color:rgb(0,168,133)">eric@vecoop.ca</span></a><br>
<a href="tel:+12507036004"
style="color:rgb(255,255,255)"
target="_blank" moz-do-not-send="true"><span
style="color:rgb(36,105,100)">T:
250.703.6004</span></a><br>
<a href="tel:+18883860116"
style="color:rgb(255,255,255)"
target="_blank" moz-do-not-send="true"><span
style="color:rgb(36,105,100)">T:
888.386.0116</span></a><br>
<strong><a href="https://viridianenergy.ca/"
style="color:rgb(255,255,255)"
target="_blank" moz-do-not-send="true"><span
style="color:rgb(0,168,133)">VIRIDIANENERGY.CA</span></a><strong></strong></strong></p>
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<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, 2 Sept 2022 at 11:43,
Kirk Herander via RE-wrenches <<a
href="mailto:re-wrenches@lists.re-wrenches.org"
moz-do-not-send="true" class="moz-txt-link-freetext">re-wrenches@lists.re-wrenches.org</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">I’ve never installed simplify batteries. Do
they make their own state of charge monitor? </div>
<div dir="auto">The trimetric has a perimeter called charge
efficiency % You can tweak that to get it to match the any
benchmark more closely. </div>
<div dir="auto">Also the trimetric should be reset to full on
a regular basis, When you have confidence the batteries are
full. All trimetrics drift off over time, especially given
the unique charge characteristics of lithium-ion’s versus
lead acid batteries.</div>
<div><br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Sep 2, 2022 at
2:32 PM Matt Sherald via RE-wrenches <<a
href="mailto:re-wrenches@lists.re-wrenches.org"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">re-wrenches@lists.re-wrenches.org</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">
<div>Hello Friends,</div>
<div><br>
</div>
<div>I have an off-grid customer for whom I recently
installed some SimpliPhi 3.8kW batteries. This is
an older system and it has a Trimetric battery
monitor that the homeowners have used for years to
keep an eye on their battery bank.</div>
<div><br>
</div>
<div>The SimpliPhi batteries appear to be working fine
at the site, but the homeowners feel uneasy b/c the
Trimetric is reporting that they are finishing each
charging cycle with an amp-hour deficit. The
voltage of the SimpliPhi batteries indicate that
they are getting fully charged and are doing so
fairly early in the AM (solar is the primary power
source).<br>
</div>
<div><br>
</div>
<div>I've spoken with SimpliPhi tech folks and their
hunch is that the Trimetric is not reporting
correctly. They suggested that a Victron BMV-712
would be more accurate at tracking Percent Full
etc... <br>
</div>
<div><br>
</div>
<div>Do you folks think that the Victron is better at
counting Ah in/out for Li batteries? Or is the
Trimetric adequate - do I maybe just need to adjust
the settings?</div>
<div><br>
</div>
<div>Anyway, the implication that the Victron BMV was
better at monitoring Li batteries has me curious and
I will enjoy hearing what the group thinks.</div>
<div><br>
</div>
<div>Thanks for your time!</div>
<div><br>
</div>
<div>-Matt<br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>
<div><br>
-- <br>
<div dir="ltr">
<div dir="ltr">
<div>
<div>
<div>Matt Sherald<br>
</div>
PIMBY Energy, LLC<br>
</div>
<div>304-704-5943<br>
<br>
</div>
<span><a
href="http://www.getpimby.blogspot.com"
target="_blank" moz-do-not-send="true">www.getpimby.blogspot.com</a><br>
</span><a href="http://www.getpimby.com"
target="_blank" moz-do-not-send="true">www.getpimby.com</a><br>
</div>
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