Hi Mac Here is the Trojan info you need
https://www.trojanbattery.com/pdf/TrojanBattery_UsersGuide.pdf Looks like 4 hrs max absorb and 29.4v and that could be a bit long depending on how much solar, size of the generator and how they use the batteries Usually the set points are at factory default! Jay Peltz power. > On Sep 11, 2018, at 5:44 PM, Mac Lewis <maclew...@gmail.com> wrote: > > Hello wrenches, > > I inspected a system that another company had installed. It had single > string of 12 x Trojan L16RE-2V batteries about 2 years old. They had > experienced a battery melt-down. It looks as though the meltdown had > occurred internally, not from a bad connection. > > The system was dual stack Outback VFXR-3524A inverters (to be precise one was > a sealed unit). The set-points were as follows: > Absorb Voltage was 29.8V > Absorb Time was 6.0 hours > Float Voltage was 27.0V > Rebulk Voltage was 27.0V > End Amps was 0A > > These settings extended similarly to 2 x FM80 charge controllers. > > I was able to jumper the melted battery and get her power in 15 minutes. Her > installer had left her without power for 2 weeks. My clients will kill me if > that happened! > > Anyway, I believe these set-points are way out of whack and too aggressive. > The voltage is OK (Trojan recommends ~29.6V for this) but the Absorb time > seems way too long, Rebulk is too high and end amps isn't helping. However, > Im not finding a definitive article from Trojan that describes typical Absorb > times or even how to adjust towards a good Absorb Time, based on specific > gravity measurements or amperage absorption. > > My diagnosis is that these batteries have been cooked over the past 2 years. > In the electrolyte, there is noticeable "floaties". The client said that the > original installer had accused her of not using distilled water, but I don't > believe that would cause her symptoms. I believe the floaties are plate > material. > > I'd be interested in wrenches opinions familiar with these batteries if these > are appropriate settings for a low energy user. I will attempt to get > through to Trojan as well. > > Thanks in advance > > > > -- > > > > Mac Lewis > > "Yo solo sé que no sé nada." -Sócrates > > _______________________________________________ > 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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