<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
Jason,<br>
<br>
Would a 96 cell Panasonic module fit in the space you have
available? It would give you sufficient voltage to charge this
battery.<br>
<br>
Kent Osterberg<br>
Blue Mountain Solar<br>
<br>
<div class="moz-cite-prefix">On 4/12/2021 10:40 AM, Jason Szumlanski
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAE438R_K2dBZ+_z8hsGohXYNBRdOXTVZXh3pJ9bFL0ZC8FYuZw@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div dir="auto">
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif">I want to
charge a 51.2V LiPO battery with a single 420W 72-cell
module. Vmp is 40.14V. </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">It's one of
those situations where I just need a lot of battery capacity
as a backup for a specified time period, but it doesn't
matter how long it takes to charge it back up. And I have
space for exactly one 72-cell module.</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">It's going to
be a Victron inverter. I'm not sure if they make a DC-DC
solution for this charging scenario or if there is another
way to accomplish it without too much cost and complexity. I
was half-heartedly thinking about an AC coupled
microinverter, but that has drawbacks in terms of efficiency
I think. Maybe that's not any worse than DC-DC conversion -
I'm not sure. AC Coupling would probably be cheaper and
easier. Monitoring might be difficult/limited. And AC
coupling would require that the inverter be on (inverting)
which isn't ideal for this situation either.</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">Thanks in
advance,</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">Jason
Szumlanski</div>
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif">Florida Solar
Design Group</div>
</div>
<img class="mailtrack-img" alt="" style="display:flex"
src="https://mailtrack.io/trace/mail/090f22f6ede877cf210daeeb9095f8b308de2d92.png?u=1613865"
moz-do-not-send="true" width="0" height="0"></div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
List sponsored by Redwood Alliance
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>
<br>
</body>
</html>