I have had generally a good experience with Sunny Island battery charging. There are definitely way too many parameters to set, but their charging algorithm is designed to bring batteries up to ~90% on the "boost" charge (every 1-2 days), 95% on their "full" charge (typically every 10-14 days) and 100% on their "equalize" charge (typically 120 or 180 days for flooded batteries). It is a different algorithm than any other battery inverter that I've programmed, and I was very skeptical when I first used a SI, but over the years, it does seem to maintain the batteries well (equalize is generally disabled on sealed batteries). They claim it is the best method, but I do not have enough data points to determine that it works better or worse than the more traditional "bulk/absorb/float" setup.
Howie On Mon, Jul 24, 2017 at 4:26 PM, Tom Duffy <t...@solar-biz.com> wrote: > 8 hours at least but 24 would be more accurate > > > > Kind regards > > > > *Tom Duffy* > > *Senior Solar Design Engineer* > > [image: Solar-Biz-new-logo-800X300] > > Your 5-star rating really matters to us. Click to rate! > <https://goo.gl/WVpOYr> Solar Biz™ team works hard to provide you the > best customer service. If we don't deserve a 5-star rating, please contact > us directly. We'll do what it takes to win your approval. > > *Please note my new E-Mail* > > *E-Mail: **t...@solar-biz.com <t...@solar-biz.com>* > > *Main Number: **888-826-0939 <(888)%20826-0939>* > > *Panama Office: **507-836-5588 X 122 <(507)%20836-5588>* > > *Direct Toll Free:* *888-503-6772 <(888)%20503-6772>* > > *International: **575-539-2111 X 122 <(575)%20539-2111>* > > *SKYPE Address: **thesolarbiz (e-mail first)* > > *I love nuclear energy! It's just that I prefer fusion to fission. And it > just so happens that there's an enormous fusion reactor safely banked a few > million miles from us. It delivers more than we could ever use in just > about 8 minutes. And it's wireless!"* > > *Confidentiality Notice*: This message including any attachments is for > the sole use of the intended recipient and may contain confidential and > privileged information. Any unauthorized review, use, disclosure or > distribution is prohibited. If you are not the intended recipient, please > contact the sender and delete any copies of this message. > > > > > > *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On > Behalf Of *Ray > *Sent:* Monday, July 24, 2017 3:24 PM > *To:* re-wrenches@lists.re-wrenches.org > *Subject:* Re: [RE-wrenches] Generator choice for Sunny Island > > > > My experience with Sunny Islands are that their SOC can be off by quite a > bit. Unfortunately with sealed batteries, you can't check SG with a > hydrometer to confirm, and tweak the settings. Probably the best you could > do, is shut the system down and let the batteries sit for long enough to > take voltage readings to double check the SOC. > > I found systems that the SI thought it was close to full, but the > batteries were actually only at 60%. > > R. Ray Walters > > Chief Technical Officer, RemoteSolar.com > > BS Mech Engineering, 1988 > > Former NABCEP Certified, 2004-2016 > > Licensed Master ELectrician, Colorado > > 303 505-8760 <(303)%20505-8760> > > On 7/24/17 2:16 PM, August Goers wrote: > > Hi Drake, > > > > Good questions. Yes, the taper charge appears to be working well. I've > been to the site a couple of times where loads were low, irradiance was > high, and battery SOC was ~90% and the Sunny Boy was just covering the load > and a little trickle charge. > > > > I have noticed that the SOC seems to max out around 90 to 92% - that seems > to be the case with Sunny Islands in general. I'm not enough of a battery > expert to know if this is a good thing or not. I do know that I custom > programmed in all the AGM battery parameters and set max voltages. I also > disabled equalize mode since I couldn't find any literature from US battery > on recommendations for their AGM. > > > > August > > > *August Goers* > > Luminalt Energy Corporation > > o: 415.641.4000 <(415)%20641-4000> > > m: 415.559.1525 <(415)%20559-1525> > > www.luminalt.com > > > > > > On Mon, Jul 24, 2017 at 5:36 AM, Drake <drake.chamberlin@ > redwoodalliance.org> wrote: > > Are you getting a good taper charge with this system? Are the batteries > reaching a decent state of charge from the AC coupled connection with the > inverter? > > Thanks, > > Drake > > > > > At 11:08 AM 7/23/2017, you wrote: > > August, > > Of course the genny itself has its own emission of noise but > the environment its in certainly will affect its overall "annoyance > level". Backed up to metal container is a negative, I can't tell from the > photo if the Kohler is on the side away from most of the public, probably > don't have to go on, you must have thought of these things....it could have > its own (partial?)enclosure with some sound deadening qualities. Hondas > are a little quieter but not that much, hopefully the darn thing doesn't > have to come on, eh? > > Nice set-up. > > Bill > > Feather River Solar Electric > Bill Battagin, Owner > 4291 Nelson St. > Taylorsville, CA 95983 > 530.284.7849 > CA Lic 874049 > www.frenergy.net > > On 7/21/2017 11:39 AM, August Goers wrote: > > All, > > I thought I'd provide an update on our setup since we've completed the > install and commissioning. More or less, the installation went well. We did > have one of the US Battery AGM L16 batteries dead on arrival with a bad > cell. That bad battery screwed up the state of charge (SOC) calculations in > the Sunny Island and made the SOC reading jump from ~ 80% to 19% in just a > couple of minutes. It was easy to find the bad battery - all the batteries > were about 6.5 v with the bad battery reading about 4.5 v. We pulled that > battery out of the string for warranty replacement and are currently > running it with seven batteries at 42 v nominal. It's cool that the Sunny > Island allows for this. Other than that, the frequency shift derate between > the Sunny Island and Sunny Boy is working perfectly and the system has more > than enough capacity to run the loads during the summer months. I'd say the > Kohler generator is the nice unit although it is a little loud for this > application. If I had to do this portable application again, I'd probably > just go with the Honda 7000. > > Thanks for your help! August > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > > _______________________________________________ > 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 > > > _______________________________________________ > 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 > > > > > > > _______________________________________________ > > 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 > > > > > > _______________________________________________ > 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 > > >
_______________________________________________ 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
