Jay, If they want to keep their SI's, a couple of years ago I successfully replaced an iron Edison battery with 3 Fortress evault batteries closed loop. Had to update SI firmware and get all evault batteries to same firmware but it was pretty straight forward. Ran it open loop for a month or two until I got all the firmware updated. It's off grid with SB11k for AC coupling. Can share the programming with you if interested. Gary
On Tue, Jul 15, 2025 at 12:14 PM jay via RE-wrenches < [email protected]> wrote: > Thanks William, > > Yes it’s AC coupled which I neglected to include. > > Given how inexpensive the new inverter gear is, the age of the old stuff > and seemingly the complication of integration I will propose replacement of > both inverter and battery. > > thanks > > jay > > > > > > On Jul 15, 2025, at 8:44 AM, William Miller via RE-wrenches < > [email protected]> wrote: > > If the system is AC coupled I would suggest you dump the Sunny Islands > immediately. > > We are soon going to wreck out 4 SIs and install 2 envy 12s. The SIs just > would not work AC coupled to e-vault 18s. > > > William Miller > Miller Solar.com > 805-438-5600 > www.millersolar.com > > > On Tue, Jul 15, 2025 at 6:43 AM jay via RE-wrenches < > [email protected]> wrote: > >> HI All, >> >> I might be inheriting a 12 yr old SI off grid system, that has a dying >> Absolyte battery. >> >> >> I know there have been some discussions on the SI and lithium. >> >> I’m just trying to understand what the options are with closed vs open >> loop, basically can it be done. >> >> If I do get the project, I will happily pay someone who’s done all the >> hard work for the education to tell me what the programming steps are. >> >> And at what point does it make sense to just remove the SI and install a >> AIO? >> >> thanks in advance. >> >> jay >> _______________________________________________ >> 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 >> >> _______________________________________________ > 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 > > > _______________________________________________ > 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 > >
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