You might also look at https://www.cdtechno.com/pdf/lit/12_1137.pdf <https://www.cdtechno.com/pdf/lit/12_1137.pdf>
Which is using nano carbon, for 3000 cycles to 50%. Other battery companies also have carbon/lead at up to 4000+ cycles for VRLA, and Rolls has 4500 cycles for flooded, both at 50% DOD. The UnigyII is tried and proven tech, but low cycle life compared to the newer carbon LA chemistries. jay Peltz Power > On Sep 26, 2019, at 2:55 PM, Jerry Shafer <jerrysgarag...@gmail.com> wrote: > > Howie > Understand but the reality is that inverter is going to fail and then it may > be to late to make an upgrade and it will be more costly. You might want to > consider Deka Unigyll that can be bussed in 24 volts and changed to 48 volts > later. No it's not LI but it's a good solution. > Jerry > > On Thu, Sep 26, 2019, 2:18 PM Howie Michaelson <howie.michael...@gmail.com > <mailto:howie.michael...@gmail.com>> wrote: > I get what you are saying Jerry, but this client ( a retiring teacher in a > very rural, low wage school district, sadly) has lived very lightly off-grid > (1kW solar, 24v Rolls KS21s original batteries) for 18 years years and has no > pressing need to upgrade his VFX3524 inverter. I'd rather find a good 24volt > option to compare a straight KS21 replacement to. I know the inverter could > crap out at any time, but if it ain't broke... > Howie > > On Thu, Sep 26, 2019 at 5:03 PM Jerry Shafer <jerrysgarag...@gmail.com > <mailto:jerrysgarag...@gmail.com>> wrote: > Dollars and sence, drop the 24 volt, BPI is a great battery. Once l show my > customers all the benefits of a 48 volt upgrade it wins every time. I am not > talking about busses, RV's and one night stands l am talking about off grid > homes. > > On Thu, Sep 26, 2019, 1:53 PM Howie Michaelson <howie.michael...@gmail.com > <mailto:howie.michael...@gmail.com>> wrote: > Hi all, > I've been using BlueIon batteries recently both on- and off-grid, and really > like them so far, although I have limited time on them so not a ton of > experience yet. I am wondering what folks are liking for 24 v LiFePO4 > battery options. I have 24 volt off-grid clients who are not ready to swap > out to 48v, but might be interested in Lithium batteries. TIA, > Howie > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > <mailto:RE-wrenches@lists.re-wrenches.org> > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > <http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org> > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > <http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html> > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm <http://www.re-wrenches.org/etiquette.htm> > > Check out or update participant bios: > www.members.re-wrenches.org <http://www.members.re-wrenches.org/> > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > <mailto:RE-wrenches@lists.re-wrenches.org> > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > <http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org> > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > <http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html> > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm <http://www.re-wrenches.org/etiquette.htm> > > Check out or update participant bios: > www.members.re-wrenches.org <http://www.members.re-wrenches.org/> > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > <mailto:RE-wrenches@lists.re-wrenches.org> > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > <http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org> > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > <http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html> > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm <http://www.re-wrenches.org/etiquette.htm> > > Check out or update participant bios: > www.members.re-wrenches.org <http://www.members.re-wrenches.org/> > > _______________________________________________ > List sponsored by Redwood Alliance > > 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 > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org >
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