Roy is correct, We have a number of clients with "old school" inverters who have changed to LIPO batteries and they work just fine in open loop set ups. Many of the early Lithium battery BMS systems closed loop communication didn't work well or at all any way. Pieter Huebner Project Manager Off Grid Enterprises ________________________________ From: RE-wrenches <[email protected]> on behalf of Roy Butler via RE-wrenches <[email protected]> Sent: Wednesday, December 17, 2025 2:13 PM To: [email protected] <[email protected]> Cc: Roy Butler <[email protected]> Subject: Re: [RE-wrenches] Outback Power FLAs to LFPs
I'm also running the EG4 server rack 24V 200 Ahr batteries with my old Outback VFX 3524, Classic 250 and Morningstar Genstar 100, all open loop with no problem. It's all a matter of getting the charge settings right and checking on the cell balance periodically. I'll be playing around with programming the Genstar for closed loop soon, should be fine but then, what to do with the Classic.....we'll see how it goes. Roy Butler Four Winds Renewable Energy, LLC 8902 Route 46, Arkport, NY 14807 607-324-9747 Education is when you read the fine print; experience is what you get when you don’t. “The less people know, the more stubbornly they know it.” He who asks a question is a fool for a minute. He who does not ask is a fool for life Although no trees were killed in the sending of this message, a large number of electrons were terribly inconvenienced. On 12/17/2025 2:51 PM, Mac Lewis via RE-wrenches wrote: I have used EG4 24V 200Ahr server rack batteries with the same equipment and it works fine. It will do closed loop with Victron if that happens in the future. Good Luck! On Wed, Dec 17, 2025 at 11:46 AM Jay via RE-wrenches <[email protected]<mailto:[email protected]>> wrote: Hi Chris I have dozens of people with open loop lithium and older Outback equipment All work flawlessly There still is some incorrect information about the LBCO not working with LFP. That I believe dates from some older LFP designs. All the newer 16 series prismatic LFP work fine with LBCO/outback. As well as all the charge parameters. Jay On Dec 17, 2025, at 9:54 AM, Chris Daum via RE-wrenches <[email protected]<mailto:[email protected]>> wrote: Dear people: We have a customer in Henryetta, Oklahoma, and he’s been buying various equipment from us over the years. He’s elderly, a veteran, and a believer in solar power. But he’s been having battery problems (he’s got twelve 6V L16 types at present) and is interested in moving up to LFPs. He’s got an Outback VFX3524, FM60, MATE3S, Hub4 and the usual accoutrements. If he wants to go with LFPs, what are your suggestions – and also how might it integrate with his 3-year old inverter? I suspect he will be unwilling to spend a chunk of change on a new inverter. All advice is welcome! Best, Chris Daum Oasis Montana Inc. 406-777-4309 406-777-4309 fax _______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: [email protected]<mailto:[email protected]> Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/[email protected]/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org _______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: [email protected]<mailto:[email protected]> Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/[email protected]/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org -- Mac Lewis "Yo solo sé que no sé nada." -Sócrates _______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: [email protected]<mailto:[email protected]> Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/[email protected]/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
_______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/[email protected]/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
