Thanks Wallace. I will return to the site and check the voltage again, but I believe when I read it it was in the teens. However, I did run into the in rush and shut down issue you mentioned the first time I tried restarting, but when I tried it again, the batteries didn't put anything out. I will talk with simpliphi and see if we can get things going. Howie
On Wed, Jul 27, 2022, 10:38 PM Wallace Stahle via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Hold off on that 48 volt charger Howie, > > I was called a while back with the same issue on a set of five of the same > model battery. All shut off internally. Had the same inverter and CC too. > I called Simpliphi which I recommend you do also and was told to turn off > all inputs and outputs to battery, close the breaker on each unit > individually and read the open circuit voltage. If 24 v or above simply > close the 3 breakers before engaging the inverter breaker as the capacitor > inrush can fool the BMS of the battery and shut it off which I found out > when I first shop charged the new batteries individually. If battery shuts > down upon inverter connection then toggling the battery breaker again the > inverter will connect and you charge with generator as the inverter can now > function with the small amount of reserve power present. And/or the solar > as conditions dictate. > > In my case one of the batteries was 23.7 V but still accepted a charge and > have apparently functioned well for the customer. Job was installed by > others. > > I hope that helps. > Wallace Stahle > Future Electric Energy Co > PO Box 236 > Willits, CA 95490 > 707-459-0474 > Lic.#C10-762093 > fut...@pacific.net > > On Jul 27, 2022, at 6:58 PM, Howie Michaelson via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > > Hi All, > I was called into a job of a previously off-grid system that new owners > had an electrician bring the grid to, but the batteries ( a pair of > Simpliphi 3.5, which I have no experience with) have been dead for an > unknown period of time previously. I am trying to figure out the easiest > way to restart the system which has a VFX 3648 and FM60. I'm thinking the > easiest way is to bring in a 48volt charger to get the battery voltage up > high enough to start the FM60 and/or VFX, but that means purchasing a 48 > volt charger, since I don't have any Iotas sitting around any more. If > anyone has an easier way to restart the batteries I'd love to hear it. > Thanks, > Howie > > *Howie Michaelson**Sun Catcher* > > *NABCEP Certified Solar PV Installerâ„¢* > > *Solar Electric Systems Sales & Service802-272-0004* > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > 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/re-wrenches@lists.re-wrenches.org/ > 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: RE-wrenches@lists.re-wrenches.org > > 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/re-wrenches@lists.re-wrenches.org/ > 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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