I didn't install it but it was well done, has three Sunny Islands and three Sunny Boys. My only involvement has been to repair a breaker that failed, and to service the generator.
On Thu, Dec 17, 2015 at 11:18 AM, Drake < drake.chamber...@redwoodalliance.org> wrote: > With relays you can set the A/C up as a dump load that will activate when > the grid goes down. > > > At 06:59 AM 12/17/2015, you wrote: > > I have a customer that has had AGM batteries in the Caribbean for many > years without any sign of capacity loss, but...they air condition (?) the > room they are in, and they do not use any discharge, they are purely setup > as a UPS style system. Unless the power fails, all the power is exported, > and they use grid power. > When using AGM as an offgrid solar system, they last about three years > here. > > On Wed, Dec 16, 2015 at 9:44 PM, jay <jay.pe...@gmail.com> wrote: > HI Luke, > > Without knowing what the charging parameters its really hard to know whats > going on. > > And this false issue with life span is years really gets me. > Batteries are measured in cycle life, period, So to say a IND battery > will get 15 to 20 years is bunk. > It’ll get the cycles based on DOD, if its charged correctly, watered and > the sun is in a good phase and, and and, > > I’ve got a guy who’s worn out his Hup’s in around 5-6 years. > But how would any other but an IND battery worked with that hard of a > life, yikes, L-16’s would have been a set a year. > > But I’m guessing his 11 year old batteries could be quite done. And he > is caught in the perfect bind. > Do you spend money on replacing some of the cells? > If it was my client, I’d say no, he’d be throwing good money after bad. > > jay > > peltz power > > > > > > On Dec 16, 2015, at 12:50 PM, Dana <d...@solarwork.com> wrote: > > > > We recommend an EQ when there is a 0.02 SG differential on any one cell > to the rest of the pack, use a refractometer for SG readings, install > watering systems with a electrolyte port or water the battery bank > ourselves, & do not do systems without a charging power backup. > > > > > ---------------------------------------------------------------------------- > > Dana Orzel > > Great Solar Works, Inc - NABCEP # 051112-136 > > E - d...@solarwork.com - Web - solarwork.com > > O - 970.626.5253 C - 208.721.7003 > > "Responsible Technologies for Responsible People since 1988" > > ï Please consider the environment before printing this email. > > > > > > > > -----Original Message----- > > From: RE-wrenches [ mailto:re-wrenches-boun...@lists.re-wrenches.org > <re-wrenches-boun...@lists.re-wrenches.org>] On Behalf Of Dave > > Sent: Wednesday, December 16, 2015 10:23 AM > > To: 'RE-wrenches' > > Subject: Re: [RE-wrenches] HuP Conundrum > > > > Luke, > > > > Contac HUP for specific advice. You've probably already done that? > > > > What comes to mind: > > Since you have two series strings, run the house on one string of all > good cells. > > > > Pull out the weak cells and charge them as per HUP's advice. > > > > I'm guessing that this problem has happened because the homeowner did > not properly charge the batteries. > > Homeowner most likely did not use a hydrometer upon EQ'ng the cells. > > Homeowner thought the cells were fully charged and equal but obviously > they were not. > > Record keeping, log books etc.. for people caring for expensive > batteries are well worth the effort. > > > > David Palumbo > > Independent Power LLC > > 462 Solar Way Drive > > Hyde Park, VT 05655 > > 802-371-8678 cell > > 802-888-4917 home > > > > > > > > > > > > -----Original Message----- > > From: RE-wrenches [ mailto:re-wrenches-boun...@lists.re-wrenches.org > <re-wrenches-boun...@lists.re-wrenches.org>] On > > Behalf Of Luke Christy > > Sent: Wednesday, December 16, 2015 12:01 PM > > To: RE-wrenches > > Subject: [RE-wrenches] HuP Conundrum > > > > Hi Friends, > > > > With all of the battery threads going on right now I figured it would be > a > > good time to start another one. > > > > I have a customer with a large off-grid system who has just started > having > > trouble with a bank of HuP batteries. This system is 48V with 8x 12V > > 6-85F-27S batteries in two series strings. Charging is supplied by > around 10 > > kW of PV. > > > > I didn't install the system and the customer has always taken care of the > > maintenance and watering himself. He has seemingly been pretty diligent > > about taking care of things, including equalizing on a regular basis. > > > However, recently he started having voltage problems and when I made a > site > > visit to check on the batteries, I found that 3 of the 8x 12V batteries > each > > had a cell with SG so low it wouldn't register on my hydrometer. > > > > Obviously this is a problem, and owing to some complicating factors I'm > not > > really sure how best to address the issue. > > > > Replacing the entire battery bank will be unbelievably expensive, > especially > > given that the house is in a remote location and there is difficult > access > > to the battery room. To add a another factor, the house is currently > > unoccupied while the owner tries to sell the property, so he is not > exactly > > eager to invest a lot of money into battery replacement. > > > > The batteries are only 11 years old, so they should theoretically have > quite > > a bit of life left in them. Perhaps those of you with more experience > with > > larger batteries can advise. Can the cells be resurrected with careful > > charging and equalizing? > > > > What would you do? > > > > Thanks as always for opinions and advice. > > > > Luke Christy > > > > NABCEP Certified PV Installation ProfessionalT: Certification #031409-25 > > NABCEP Certified Solar Heating InstallerT: Certification #ST032611-03 > > > > > > Solar Gain Services, LLC > > PO Box 531 > > Monte Vista, CO. 81144 > > sgsrenewab...@gmail.com > > 719.588.3044 > > www.sgsrenewables.com > > > > > > > > > > > > > > > > _______________________________________________ > 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 > > > > > -- > Chris Mason > NABCEP Certified Solar PV Installer™ > Solar Design Engineer > Generac Generators Industrial technician > > www.cometsolar.com <http://www.cometenergysystems.com> > 264.235.5670 > 869.662.5670 > Skype: netconcepts > _______________________________________________ > 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/?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> > This > email has been sent from a virus-free computer protected by Avast. > www.avast.com > <https://www.avast.com/?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> > _______________________________________________ > 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 > > > -- Chris Mason NABCEP Certified Solar PV Installer™ Solar Design Engineer Generac Generators Industrial technician www.cometsolar.com <http://www.cometenergysystems.com> 264.235.5670 869.662.5670 Skype: netconcepts
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