Hi drake, The early failure of other batteries brings up questions
Charge set points? Frequent overcharge, possible but damn unusual Frequent undercharge? Hi heat location? Offgrid? Ongrid? Battery type? Jay Peltz power. > On Aug 24, 2016, at 7:36 AM, Drake <drake.chamber...@redwoodalliance.org> > wrote: > > The batteries were tested with a glass bulb, turkey baster type hydrometer. > The SG read higher than the scale on all the batteries. The electrolyte was > clear. The batteries were not too old, maybe three years, with some newer > ones, as others in the bank had failed. The corrosion was notable. I did not > install the batteries, so don't know if the battery jumpers were cleaned at > installation. Could terminal corrosion have aggravated the problem in anyway? > > At 10:01 AM 8/24/2016, you wrote: >> Content-Type: multipart/related; >> boundary="----=_NextPart_000_0010_01D1FDDD.B1B27F40" >> Content-Language: en-us >> >> How are you reading the SG? >> >> __________________________________________________________ >> Dana Orzel >> Great Solar Works, Inc - NABCEP # 051112-136 >> d...@solarwork.com - www.solarwork.com >> O - 970.626.5253 F - 970.626.4140 c - 208.721.7003 >> "Responsible Technologies for Responsible People since 1988" >> >> From: RE-wrenches [ mailto:re-wrenches-boun...@lists.re-wrenches.org] On >> Behalf Of Drake >> Sent: Tuesday, August 23, 2016 7:45 PM >> To: RE-wrenches >> Subject: [RE-wrenches] Battery issue >> >> Hello Wrenches, >> >> I was analyzing a string of 8 Trojan L-16 batteries with badly corroded >> terminals. The specific gravity read perfect on each battery. Two of the >> batteries read low voltage; about 4.2 volts.It seems like one cell's worth >> of voltage wasn't showing up on each battery. Has anyone seen this before? >> >> What would cause this? How can the specific gravity be right? >> >> Thanks, >> >> Drake >> >> Drake Chamberlin >> Athens Electric LLC >> OH License 44810 >> CO License 3773 >> NABCEP Certified Solar PV >> 740-448-7328 >> http://athens-electric.com/ >> >> >> >> <19c8c74b.jpg> >> >> This email has been checked for viruses by Avast antivirus software. >> www.avast.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 > > > > This email has been checked for viruses by Avast antivirus software. > www.avast.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 >
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