You can absolutely charge to 100% and you can discharge to 100%. Lithium is in another world compared to Lead Acid. You don't see LA cars driving around. But you shouldn't leave Lithium at 100% for months on end, it can be detrimental. That's not likely to be an issue for solar systems. Your absorption voltages are only for non-485 inverters that don't know about Lithium. The question was whether you can charge to 100% and yes, you absolutely can, because 100% is no 100%, there is a recommended voltage and a do-not-exceed voltage.
On Mon, Nov 1, 2021 at 2:43 PM frenergy <frene...@psln.com> wrote: > Hey Folks, > > From the SimpliPHI/Outback integration guide download, using > an Outback (I assume any brand of) charge controller (EG: FM80, FM60, > FM100), their chart shows absorbtion voltage at 56.4 for 51.2 nom PHI > batteries with time set at 6 minutes, page 18. If using the inverter, they > show 54.0 volts for 2 hrs, page 13. > > I found this at their website: > https://simpliphipower.com/product-documentation/ > > then scroll down. There may be a longevity advantage to not fully > charging L-ion batteries but if you're only charging to 80% and not really > supposed to go below 20% SOC then L-ion batteries aren't looking much > better than FLA batteries in terms of capacity. > > Bill > > Feather River Solar Electric > On 11/1/2021 10:03 AM, Chris Mason wrote: > > There's no benefit to charging to 100%. If the charging parameters are set > up correctly, you'll never really get to 100%. > If you look at most prismatic cells, the absolutely maximum voltage is > 3.65V. My systems are set up to charge to 3.4V or 54.4V. I take that as > 100%. > > > > On Sun, Oct 31, 2021 at 12:19 PM <drake.chamber...@redwoodalliance.org> > wrote: > >> >> I have a client that insists it is better not to charge lithium >> batteries to 100%. Is there any truth to this? >> >> Thanks, >> >> Drake >> >> >> Drake Chamberlin >> Athens Electric LLC >> Ohio Electrical Contractor’s License 44810 >> CO Master Electrician’s License 4526 >> NABCEP Certified PV Installation Professional >> >> -- >> _______________________________________________ >> 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 >> >> > > -- > Chris Mason > Solar systems designer > Generac Generators Industrial technician > > Comet Systems Ltd DBA Comet Solar > Anguilla Cell 264.235.5670 > WhatsApp 264.235.5670 > Skype: netconcepts > www.cometsolar.com <http://www.cometenergysystems.com/> > > _______________________________________________ > 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 > > -- > Feather River Solar Electric > Bill Battagin, Owner > 4291 Nelson St. > Taylorsville, CA 95983 > 530.284.7849 > CA Lic 874049www.frenergy.net > > > > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=icon> > Virus-free. > www.avast.com > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=link> > <#m_-542264890670700673_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > _______________________________________________ > 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 > > -- Chris Mason Solar systems designer Generac Generators Industrial technician Comet Systems Ltd DBA Comet Solar Anguilla Cell 264.235.5670 WhatsApp 264.235.5670 Skype: netconcepts www.cometsolar.com <http://www.cometenergysystems.com/>
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