Both were new, same date batteries. Currents are so low there is no heat problem. Even Charging at 70 Amps does not produce much heat even after a few hours. The batteries did expand into the containing box. Note that with many hundreds of similar installations, this is the only one that had this heat event. Cables were 2/0 between and to the bus bar. No terminal heating took place. Absorb ends after time only. Also, the alternator charges while driving at 13.9 volts. Neither is a problem since current will drop to about 0.7 after saturation.
Thank you, Larry Crutcher Starlight Solar Power Systems On May 10, 2018, at 3:02 PM, maver...@mavericksolar.com wrote: Looks like a mix of old and new Batteries in a cabinet too small to drain excessive heat gain. Was the cabinet shaded? Or exposed to direct sun? Temp sensor on charging source? What size interconnect cables were used? Was it a bus system? Absorb with End Amps was turned on? Sent from my iPhone On May 10, 2018, at 4:41 PM, Michael Morningstar <mjmornings...@gmail.com <mailto:mjmornings...@gmail.com>> wrote: > <image1.jpeg> > One year old. Well looked after system. > On May 10, 2018, at 1:42 PM, Starlight Solar Power Systems > <la...@starlightsolar.com <mailto:la...@starlightsolar.com>> wrote: > >> Wrenches, >> >> Attached is a photo of my first thermal runaway event after 17 years and >> thousands of battery systems installed. These were in an RV. I checked every >> charge source and all are within specified charging parameters. No cause >> found. The owner is a single elderly lady that uses very little power in her >> RV and spend most of the time on shore power. She reported that the >> batteries were dead when she unplugged from shore power. This was i the 23rd >> month after installation. >> >> After I reported this to my Fullriver distributor, they told me that another >> set of DC400-6 had melted down just 1 month earlier and that they had fused >> together just like these. That is extreme heat. It is too peculiar to know >> of two similar events. This meltdown happened within the 2 year warranty >> period but my customer could not come back to us for another 3 months beyond >> the warranty period. Fullriver would not allow anything towards replacement >> do to the reporting date being grater than 24 months. >> >> I would like to know has anyone else had a similar failure with Rolls or >> Fullriver AGM batteries, specifically L16 size. >> >> Thank you, >> >> Larry Crutcher >> Starlight Solar Power Systems >> >> >> >> <IMG_0627.jpeg> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: RE-wrenches@lists.re-wrenches.org >> <mailto:RE-wrenches@lists.re-wrenches.org> >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> <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 >> <http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html> >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm <http://www.re-wrenches.org/etiquette.htm> >> >> Check out or update participant bios: >> www.members.re-wrenches.org <http://www.members.re-wrenches.org/> >> > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > <mailto:RE-wrenches@lists.re-wrenches.org> > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > <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 > <http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html> > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm <http://www.re-wrenches.org/etiquette.htm> > > Check out or update participant bios: > www.members.re-wrenches.org <http://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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