Greetings Jay, Though the curve is obviously very flat with lithium and not very susceptible to Peukert’s law I do find that the delta between voltage and SOC can very a couple volts depending on how much current is being pushed in or out. But since you asked for a “rough” approximation here is what I observed on a couple systems I’ve got on HBX (while under load or charge).
48vdc seems to be pretty consistent at 5% but drops closer to 47% @ 1C. I just tell my clients it’s time to run the generator or conserve once at 50 or below. 51.2vdc = 21% SOC 51.6vdc = 33% SOC 52% = 45% SOC Obviously you can see a trend of about 12% for every .4vdc Of course when we receive a new lot of batteries and first install they are resting at 52.9vdc and are at 85% SOC. Also, I’ve got a “confidential” document I can send you directly as well. Good luck, Nick > On Dec 28, 2022, at 8:54 AM, jay via RE-wrenches > <re-wrenches@lists.re-wrenches.org> wrote: > > > HI All, > > I’m trying to trouble shoot a remote system and wondering if anyone has a > rough volts vs SOC for the the blue planet battery > > > > thx > jay > > > > > _______________________________________________ > 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
