<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"></div><div dir="ltr">It’ll work fine no problems. </div><div dir="ltr"><br></div><div dir="ltr">Open loop of course. </div><div dir="ltr"><br></div><div dir="ltr">Jay</div><div dir="ltr"><br><blockquote type="cite">On Dec 22, 2025, at 12:50 PM, Chris Daum 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=us-ascii"><meta name="Generator" content="Microsoft Word 15 (filtered medium)"><style>@font-face { font-family: "Cambria Math"; }
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div.WordSection1 { page: WordSection1; }</style><div class="WordSection1"><p class="MsoNormal">RE: Closed loop communications… I have a customer who needs to replace his old AGMs; he’s looking at getting something like 2500ah @ 24V and wants LFPs. This is a battery based, grid tie system. His equipment is a pair of XW4024s (Schneider – and he has NO interest in replacing his inverters) and three Classic (Midnite) charge controllers. I’m concerned with integrating the LFPs with his old inverter, but his Classics, I believe, can be reprogrammed to accommodate the LFPs. This system was installed around 2015 so the equipment is not new – but it’s basically been humming along until a couple of weeks ago, when there was a week of 60 to 90 MPH winds that killed the power for a while. This is near Boulder, CO (at 9000 ft elevation). His system worked fine til his old AGMs gave out. Their power was out for ~3 days, then came on for 2 days, then went out again for a couple of days. So he realized how undersized and old his batteries were.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">If he gets some new LFPs, do you think they’ll work with this vintage equipment? Any of your wonderful advice to pass along!? I’m thinking the Classics can dial in the settings he needs.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Thanks, y’all!<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoAutoSig">Chris Daum<o:p></o:p></p><p class="MsoAutoSig">Oasis Montana Inc.<o:p></o:p></p><p class="MsoAutoSig">406-777-4309 or 4321<o:p></o:p></p><p class="MsoAutoSig">406-777-4309 fax<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal"><o:p> </o:p></p></div><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></body></html>