Bill, What is the full charge voltage of your L-ion pack. The one I am using need 56 VDC. Next look at the module data sheet and see % or actual drop in peak power voltage per degree C. The modules will be about 60 degrees C which is 40 degrees higher that where they are rated. My guess is that if you need 56 volts from two 60 cell modules it will be a much lower current than peak current. The modules will be running closer to open circuit voltage. If you battery reaches full charge at 48 volts, it should charge fine, but you will have other bigger problems. David Katz
On Tue, Sep 11, 2018 at 3:04 PM Bill Battagin <frene...@psln.com> wrote: > I've been on hold with OB for about 40 minutes now and I need to know if 2 > SW PVs with a Voc of 39.9 and a Vmpp of 31.3 will do an effective job of > charging a 48 volt LA battery especially with temps of 95 degrees. Anybody > have experience with this or similar, Appreciate the feedback. It just > seems I'm a little low in Vmpp if I want to equalize when its hot. Will it > be even more questionable in 10 years as PVs age? > > OB did just pickup only to tell me I need Java for the string sizing tool > and he can't help me with this configuration. > > Bill > > On 9/11/2018 1:28 PM, Sindelar Solar wrote: > > If it's a 48V system, you might also look at Blue Ion LiFePo batteries and > eliminate the lead for good. I just installed my first set and consider it > a game changer. > > Allan > On 9/11/2018 1:44 PM, Steve Romo wrote: > > Good afternoon everyone, > > What has been your experience with the Outback OPzV battery? I have a > client who destroyed a set of Solar One HUP batteries (2490 A/HR) by > forgetting to water them for a year. We are looking to take watering out of > the equation. > He does need this much storage (maybe more) My next thought was 3 strings > of GS SLR 1000 batteries (cycle life is a lot better but at twice the > cost) > I appreciate any and all input. > -- > Steve Romo > Mountain Power Solutions LLC > NABCEP certified PV Installer #110112-124 > Kohler Certified Generator Technician > Generac Certified Generator Technician > > 970-433-6316 > _______________________________________________ > > List sponsored by Redwood Alliance > > -- > > *Allan Sindelar* > al...@sindelarsolar.com > NABCEP Certified PV Installation Professional > New Mexico EE98J Journeyman Electrician > Founder (Retired), Positive Energy, Inc. > *505 780-2738 cell* > > > > > _______________________________________________ > 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 > > > > > <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_6879435072246311821_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > _______________________________________________ > 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 > > -- David Katz Sent from Gmail Mobile
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