Ha that's a good one. But still good to know if they were murdered or had defects.
While I also have had early failures on every brand, that's earlier than most I've seen Usually it's outside of warranty, of course. Jay > On Aug 24, 2016, at 7:56 AM, Ray Walters <r...@solarray.com> wrote: > > Trojan L 16s have a known issue with premature cell failures. The T105s seem > to still be fine, but I won't sell the L16 anymore. > SG readings don't even matter when you have an obvious cell failure. Its > like doing blood work on a corpse. > R.Ray Walters > CTO, Solarray, Inc > Nabcep Certified PV Installer, > Licensed Master Electrician > Solar Design Engineer > 303 505-8760 >> On 8/24/2016 8:36 AM, Drake 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/ >>> >>> >>> >>> <mime-attachment.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 >> > > _______________________________________________ > 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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