I’m inclined to agree with Maverick. Mixing old and new batteries is not recommended. Differing internal resistance coupled with potentially extreme temps can lead to thermal runaway.
rick brown SolShine Energy Alternatives, LLC Electrical & Solar Contracting Services www.SolShineEnergyAlternatives.com Check, Virginia 24072 540.808.9502 VA Class A Contractor Lic# 2705147660 VA Master Electrician Lic# 2710062762 VA Alternative Energy Systems Installer NABCEP Certified PV Installation Professional 110112-21 > On May 10, 2018, at 6:02 PM, "maver...@mavericksolar.com" > <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> >> 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> 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 >>> >>> 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 >
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