<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">We have been using the Solark inverter for GTBB and off grid clients. In the case of low battery cut out the solar does stay alive in the background and will recharge the batteries when the sun comes out the next day and turn itself back on and provide AC power output.<div><br id="lineBreakAtBeginningOfSignature"><div dir="ltr"><div>Michael D Nelson</div><div>MD Electric & Solar, Inc.</div><div>707-684-0064 mobile</div><div>707-884-1862 office</div><div>www.mdelectricsolar.com</div><div>www.facebook.com/mdelectricandsolar</div><br></div><div dir="ltr"><br><blockquote type="cite">On May 12, 2025, at 10:13 AM, Ray Walters via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<p>So the bypass switch gets the house power on, and I too always
recommend a hard bypass switch. However, you still need a 48 v
power supply to get the battery system back up, and that's
becoming a serious pain in my aging backside. Until AIOs with Li+
batteries, lead acid would have enough voltage to get the charge
controller to come back on, and eventually the customer could get
the inverter back on too. No special trip out. </p>
<p>We need an independent circuit that would sense array voltage,
and wake up the battery, so it could take a charge: a backup
battery for the offgrid battery. Without that, AIOs and Li+
batteries are not self healing like Lead Acid. We are going
backwards fast, but with an amazing amount of new Chinese
technology driving the jalopy in reverse. (Danger Will Robinson)<br>
</p>
<p>Ray Walters<br>
Remote Solar<br>
</p>
<div class="moz-cite-prefix">On 5/12/2025 10:54 AM, Jason Szumlanski
via RE-wrenches wrote:<br>
</div>
<blockquote type="cite" cite="mid:CAE438R_X4H8U=i2oEo7poPPNO4PF5LuB_yLREmJcXrbsQ9w9uQ@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div dir="ltr">
<div>
<div class="gmail_default" style="font-family:arial,helvetica,sans-serif">We always
recommend a transfer switch to bypass the inverter and
send generator power to the loads. Most clients take us up
on it. For retrofits, sometimes there can be space
limitations, however. </div>
<div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br>
</div>
<div class="gmail_default" style="font-family:arial,helvetica,sans-serif">As for the
function of the AIO, there is no integrated mechanical
bypass, and since there is an internal relay controlling
the generator input (or smart load output on that
breaker), I think the default function is for the relay to
open when the inverter turns off. AC voltage on the load
side of the breaker does not close the relay and turn the
inverter back on automatically.</div>
<br clear="all">
</div>
<div>
<div dir="ltr" class="gmail_signature">
<div dir="ltr"><br>
Jason Szumlanski
<div><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Principal
Solar Designer | Florida Solar Design Group</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">
<span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">NABCEP
Certified Solar Professional (PVIP)</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">
<span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Florida
State Certified Solar Contractor CVC56956</span></div>
<div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif">Florida
Certified Electrical Contractor EC13013208</font></div>
</div>
</div>
</div>
<br>
</div>
<br>
<div class="gmail_quote gmail_quote_container">
<div dir="ltr" class="gmail_attr">On Mon, May 12, 2025 at
9:49 AM Dave Angelini Offgrid Solar 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 style="font-size:12pt;font-family:Verdana,Geneva,sans-serif">
<div id="m_-2585636671733455182signature">
<div id="m_-2585636671733455182v1signature" style="color:rgb(51,51,51);background-color:rgb(255,255,255)">All sounds
wrong to me. Call Midnite. </div>
<div style="color:rgb(51,51,51);background-color:rgb(255,255,255)"> </div>
<div style="color:rgb(51,51,51);background-color:rgb(255,255,255)">Typically
there is a AC bypass mechanical switch that allows the
gen to bypass the inverter and power loads.</div>
<br>
<pre> </pre>
<pre><strong><span style="font-size:small">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" rel="noopener" target="_blank" moz-do-not-send="true"> </a><a style="color:blue;font-size:11px;font-family:"Lucida Grande",Verdana,Arial,Helvetica,sans-serif;font-weight:400;background-color:rgb(255,255,255)" href="https://offgridsolar1.com/" rel="noopener noreferrer" target="_blank" moz-do-not-send="true"><span style="font-size:12pt">https://offgridsolar1.com/</span></a><a href="http://members.sti.net/offgridsolar/" rel="noopener" target="_blank" moz-do-not-send="true"> </a>
e-mail <a href="mailto:offgridsolar@sti.net" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
</div>
<p><br>
</p>
<p id="m_-2585636671733455182reply-intro">On 2025-05-12
9:29 am, Jason Szumlanski via RE-wrenches wrote:</p>
<blockquote type="cite" style="padding:0px 0.4em;border-left:2px solid rgb(16,16,255);margin:0px">
<div id="m_-2585636671733455182replybody1">
<div dir="ltr">
<div>
<div style="font-family:arial,helvetica,sans-serif">Maybe
I'm missing something, but it seems like there
is a flaw in the logic for how generator
integration works with this product. Unlike some
of the other AIOs, you can't put the generator
on the Grid input in an off-grid scenario. You
have to use the Generator smart load breaker,
which isn't a dedicated generator input, but a
programmable circuit. This is problematic
because it seemingly has a normally open
internal relay that closes only when the
inverter is ON. At least, that's how it seems to
work in my limited experience.</div>
<div style="font-family:arial,helvetica,sans-serif"> </div>
<div style="font-family:arial,helvetica,sans-serif">Why
is this a problem? If the battery capacity drops
below the low voltage cutoff, the inverter turns
off. You have to turn the inverter ON for the
generator relay to close so you can charge the
battery, but since the battery is too low, the
inverter won't turn on. You would have to
reprogram the inverter to drop the cutoff
voltage/SOC below the current battery state. For
people who do not want to use AGS, or if AGS
fails to start the generator for any reason,
getting the generator to charge the battery
manually is no easy task.</div>
<div style="font-family:arial,helvetica,sans-serif"> </div>
<div style="font-family:arial,helvetica,sans-serif">Moreover,
turning the generator on manually when the
inverter is in an OFF state will not pass power
to the loads, and will not turn the inverter ON
automatically. You have to get the inverter
turned ON somehow so that the generator power
can pass through to the loads. And since the
startup sequence for this inverter is very
quirky, non-intuitive, and unreliable, that
makes the problem even worse. I'm not sure if
you can even turn the inverter ON when there is
generator input and the battery is too low. I
don't think you can because the relay is open
and the inverter doesn't even see
generator voltage when it is in an OFF state.</div>
</div>
<div>
<div style="font-family:arial,helvetica,sans-serif">This
seems like a serious oversight and a reason to
go with one of the other AIOs on the market. I
believe the Sol-Ark 15K and EG4 18kPV will both
immediately power loads and start charging when
the generator is on, regardless of whether the
generator is connected to the Grid or Generator
input. Any AC input immediately passes through
to the loads. This is because those inverters
stay "on" when a low battery condition is met,
and they simply stop using the battery to invert
power if the battery conditions do not allow it,
based on the settings. </div>
</div>
<div> </div>
<div>
<div style="font-family:arial,helvetica,sans-serif">The
logic of the Midnite AIOs turning "off" when
battery cutoff is met and opening the generator
relay doesn't make sense to me. Am I wrong about
how this works?</div>
</div>
<div>
<div dir="ltr">
<div dir="ltr">
<div> </div>
Jason Szumlanski
<div>Principal Solar Designer</div>
<div>Florida Solar Design Group</div>
</div>
</div>
</div>
<div dir="ltr">
<div> </div>
<div>
<div dir="ltr"> </div>
</div>
</div>
</div>
</div>
<br>
<div style="margin:0px;padding:0px;font-family:monospace">_______________________________________________<br>
List sponsored by Redwood Alliance<br>
<br>
Pay optional member dues here: <a href="http://re-wrenches.org" rel="noopener noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">http://re-wrenches.org</a><br>
<br>
List Address: <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><br>
<br>
Change listserver email address & settings:<br>
<a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" rel="noopener noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br>
<br>
There are two list archives for searching. When one
doesn't work, try the other:<br>
<a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" rel="noopener noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br>
<a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" rel="noopener noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br>
<br>
List rules & etiquette:<br>
<a href="http://www.re-wrenches.org/etiquette.htm" rel="noopener noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">http://www.re-wrenches.org/etiquette.htm</a><br>
<br>
Check out or update participant bios:<br>
<a href="http://www.members.re-wrenches.org" rel="noopener noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">http://www.members.re-wrenches.org</a><br>
<br>
</div>
</blockquote>
</div>
_______________________________________________<br>
List sponsored by Redwood Alliance<br>
<br>
Pay optional member dues here: <a href="http://re-wrenches.org" rel="noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">http://re-wrenches.org</a><br>
<br>
List Address: <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><br>
<br>
Change listserver email address & settings:<br>
<a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" rel="noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br>
<br>
There are two list archives for searching. When one doesn't
work, try the other:<br>
<a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" rel="noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br>
<a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" rel="noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br>
<br>
List rules & etiquette:<br>
<a href="http://www.re-wrenches.org/etiquette.htm" rel="noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">http://www.re-wrenches.org/etiquette.htm</a><br>
<br>
Check out or update participant bios:<br>
<a href="http://www.members.re-wrenches.org" rel="noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">http://www.members.re-wrenches.org</a><br>
<br>
</blockquote>
</div>
</div>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
<pre wrap="" class="moz-quote-pre">_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: <a class="moz-txt-link-freetext" href="http://re-wrenches.org">http://re-wrenches.org</a>
List Address: <a class="moz-txt-link-abbreviated" href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a>
Change listserver email address & settings:
<a class="moz-txt-link-freetext" href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a>
There are two list archives for searching. When one doesn't work, try the other:
<a class="moz-txt-link-freetext" href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a>
<a class="moz-txt-link-freetext" href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a>
List rules & etiquette:
<a class="moz-txt-link-freetext" href="http://www.re-wrenches.org/etiquette.htm">http://www.re-wrenches.org/etiquette.htm</a>
Check out or update participant bios:
<a class="moz-txt-link-freetext" href="http://www.members.re-wrenches.org">http://www.members.re-wrenches.org</a>
</pre>
</blockquote>
<span>_______________________________________________</span><br><span>List sponsored by Redwood Alliance</span><br><span></span><br><span>Pay optional member dues here: http://re-wrenches.org</span><br><span></span><br><span>List Address: RE-wrenches@lists.re-wrenches.org</span><br><span></span><br><span>Change listserver email address & settings:</span><br><span>http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</span><br><span></span><br><span>There are two list archives for searching. When one doesn't work, try the other:</span><br><span>https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</span><br><span>http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</span><br><span></span><br><span>List rules & etiquette:</span><br><span>http://www.re-wrenches.org/etiquette.htm</span><br><span></span><br><span>Check out or update participant bios:</span><br><span>http://www.members.re-wrenches.org</span><br><span></span><br></div></blockquote></div></body></html>