<div dir="auto"><div>I'd look for weak/loose internal control circuitry, especially connected to the K3 contractor or it's drive coil. Grab, pull, twist all connectors and see if the relay responds. </div><div dir="auto"><br></div><div dir="auto">Good luck 🤞 <br><br><div class="gmail_quote" dir="auto"><div dir="ltr" class="gmail_attr">On Mon, Apr 7, 2025, 4:54 PM Maverick Brown via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><span style="color:rgb(0,0,0)">What voltages are you using with it for ABS? Are you running open loop? Does the battery pretend to be Pylontech or some other protocol? </span><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)">Maybe the BMS is tripping from high volts, even for a brief period. </div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)">The spec does say maximum of 56V. </div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)">Most all other 16S LiFePO4 can go much higher, in theory to:</div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)">3.65 max cell voltage = 58.4</div><div style="color:rgb(0,0,0)">3.5 vpc is 56V</div><div style="color:rgb(0,0,0)">3.45 vpc = 55.2V, my favorite sweet spot</div><div style="color:rgb(0,0,0)">3.4 vpc = 54.4 is preferred by a few vendors.</div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)">Is the Sol-Ark on the internet so you can look at voltage charts? If so, I can look at it if you want/can share it. </div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)">Absorb time is another story. </div><div style="color:rgb(0,0,0)"><br></div><div style="color:rgb(0,0,0)"><br></div><div dir="ltr">Thank you,<div><br></div><div>Maverick</div><div><div id="m_-7221261733018929735m_-306683983880994278AppleMailSignature" style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px"><div><br></div><div>Maverick Brown<br>Off-Grid Solar Commander since 2006<br>Maverick Solar Enterprises, Inc.<br> • Solar Commander Remote Power<br> • SunFlow Systems Cathodic Protection <br><a href="mailto:maverick@mavericksolar.com" rel="noreferrer noreferrer" target="_blank">maverick@mavericksolar.com</a><br>512-460-9825</div><div><br></div></div></div><div><br></div></div><div dir="ltr"><br><blockquote type="cite">On Apr 7, 2025, at 5:00 PM, Kevin Pegg via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer noreferrer" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
<div>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Hello Wrenches, <u></u>
<u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Has anyone seen this before? I’m dealing with a battery bank that keeps tripping out, opening the K3 contactor, randomly. I can’t find any pattern nor cause. Voltage is ok, load ok, temperature
ok. It could be during the day under PV charge, or in the evening. The battery bank is paired with a SolArk 15k. Same behavior if it’s closed loop or open loop voltage-based control. SolArk tech support said it was not supported in closed loop. GSL tech support
has not been useful and refuses to address the issue at hand. <u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">This is close but not exact model.
<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><a href="https://www.gslenergybattery.com/20kwh-wheel-design-solar-energy-storage-battery--2048kwh-lifepo4--modular--scalable--10-year-warranty--ul-certified" rel="noreferrer noreferrer" target="_blank">https://www.gslenergybattery.com/20kwh-wheel-design-solar-energy-storage-battery--2048kwh-lifepo4--modular--scalable--10-year-warranty--ul-certified</a><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">I wrote about this same project Dec 2024 was able to recover a frozen and 18 months abandoned deeply discharged battery bank. Capacity wise, they are fine. This site is not continually occupied;
I just don’t know how to get it to the point where the system is reliable. Tempting to bypass the K3 contactor, as it still would have a secondary one for safety.
<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Kevin Pegg<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">EA Energy Alternatives Ltd.
<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><a href="https://www.google.com/maps/search/37471+Hwy+16?entry=gmail&source=g" target="_blank" rel="noreferrer">37471 Hwy 16</a> E
<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Telkwa, BC V0J 2X2<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
</div>
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