It just takes a bit longer to respond because of the steep Lion curve. It will respond in a minute or 2. It does not affect capacity at all. Just a bit different than LA. --Dave
Dave Starlight Solar Power SystemsDave > Hello Darryl, > > Quote "You must be careful of LI because if you are floating, the voltage > drops so little your CC will not > necessarily pick-up.â > > We have sold hundreds of Li-ion batteries over the last 4 years. No one > has had a problem with a PV solar charge controller or battery charger > providing current when a load is applied. If the battery voltage is at > equilibrium with the charger, float mode and current basically zero, the > slightest load will be directed to the charge source as it attempts to > maintain voltage. > > Hey Jay, > > We sell Relion with cylindrical cells and prismatic cells from Elite Power > Solutions (GBS) and LiFeBlue Battery. We have never had a cell failure > with any battery yet so as for cell quality, all brands are working well. > The problems we have had are always with the EMS systems. > > My thoughts comparing the two battery types are one type has fewer points > of failure. In a 100AH 12 volt pack using cylindrical cells, you have many > dozens of batteries and connections compared to 4 to 16 prismatic cells. I > know Tesla cars have worked extremely well with 7000+ cylindrical cells > but he has spent millions making it work. In the Li battery market we are > involved with, Iâm not so sure the manufacturers have provided the same > level of QC. > > Larry Crutcher > Starlight Solar Power Systems > > > On Oct 7, 2017, at 8:05 PM, Darryl Thayer <darylsol...@gmail.com> wrote: > > I have only limited experience with Lithium batteries. But in that > experience, a module of small cylindrical cells will have a higher power, > faster charge, and discharge. For the same chemistry, the prism cells > will > have a little higher energy density. For long cycle life and slow aging, > the differences in battery additives meaning the manufacturer are > paramount. In using Li-ion there are a few tricks. The voltage is very > stable, so you can not use voltage for the state of charge. For LA you > will > float 13.4 forever, then when you draw power, the voltage drops. even at > low draw, the voltage drops to the 12.6 range. You must be careful of LI > because if you are floating, the voltage drops so little your CC will not > necessarily pick-up. Some manufacturers give you instruction via mod bus > or some form of communication. So ask your CC supplier and your battery > people good luck some do not even understand their own equipment. > > On Sat, Oct 7, 2017 at 10:16 AM, jay <jay.pe...@gmail.com> wrote: > >> To follow along with the lithium questions, >> >> Iâm wondering what thoughts/information people have on prismatic vs >> cylindrical lithium family batteries? >> >> My questions are quality,cycle life, pros/cons,recycling? >> >> Thanks >> >> jay > > _______________________________________________ > 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 > > Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ e-mail offgridso...@sti.net text 209 813 0060 _______________________________________________ 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
