<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Jason, Mack, Maverick, Kent and John,<div class=""><br class=""></div><div class="">Looks like the Genasun absorb set points are 57.6 right? Were you still needing this for a LiFePO4 battery option Jason? Maybe they offer a different voltage setpoint option I\u2019m not seeing? I\u2019ve needed something like this for a couple applications as well. Even if something like this existed to boost output voltage before going into a larger controller like an FM60 or Midnite option.</div><div class=""><br class=""></div><div class="">At least with today\u2019s newer 60 cell modules we can put a couple in series and Vmpp will still be high enough to hit absorb set points for lithium options even after heating up. A luxury we didn\u2019t have in the past with FLA and periodic requirements for EQ\u2019ing. I know two 60 cell modules is much more footprint than a single but at least we have that.</div><div class=""><br class=""></div><div class="">Enjoy your night, Nick<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Apr 12, 2021, at 10:40 AM, Jason Szumlanski <<a href="mailto:jason@floridasolardesigngroup.com" class="">jason@floridasolardesigngroup.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"></div><div dir="auto" class=""><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 class=""></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 class=""></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 class=""></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 class=""></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>
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