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  • 1.  Zoom Discussion - Latest Solar News, Stand Alone Systems, Lithium Ion Vs Lead Acid Batteries

    Posted 04-05-2022 10:54 AM
    This week's session featured discussion on: recent solar industry news. Also we discuss designing stand alone PV systems, getting a perspective on what issues may arise. We also compare the relative merits of Lithium Ion batteries versus Lead Acid.
     
    Each Tuesday at noon (Eastern) solarPVtraining.com hosts a Zoom sessions for students (or anyone, really) interested in solar. Generally discussion focuses on technical questions, problems or troubleshooting - or just what is happening in solar that week.



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    Jay Warmke
    Owner
    Blue Rock Station LLC
    jay@bluerockstation.com
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  • 2.  RE: Zoom Discussion - Latest Solar News, Stand Alone Systems, Lithium Ion Vs Lead Acid Batteries

    Posted 04-06-2022 09:10 AM
    I just invested 10K$ in lead acid. 20+ year life expectancy. 40KWH's capacity. For backup occasions.

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    william fitch
    Owner
    www.WeAreSolar.com
    fcfcfc@ptd.net
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  • 3.  RE: Zoom Discussion - Latest Solar News, Stand Alone Systems, Lithium Ion Vs Lead Acid Batteries

    ASES Life Member
    Posted 04-07-2022 10:00 AM
    Edited by Mike Curran 04-07-2022 10:07 AM
    William, is that 40kwh at 50% SOC? If so you got a great deal.  If not, STILL a great deal!

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    Mike Curran
    Retired from (dare I say it?) Fossil Plant Mgt.
    joacchim57@gmail.com
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  • 4.  RE: Zoom Discussion - Latest Solar News, Stand Alone Systems, Lithium Ion Vs Lead Acid Batteries

    Posted 04-07-2022 12:17 PM
    Edited by william fitch 04-07-2022 10:56 PM
    No. That's the C-20 rating, all the way "down", basically. OPzV actually do very well on deep discharge as long as you don't make it a "habit". And as backup, it won't be, especially with solar arrays to recharge them daily.
    Li-anything is way out of my price league... and bragging rights are of no interest to me. Space and weight are also not a factor for my location. That 10K$ also includes a 6% sales tax and connection cables.

    FYI: Batteries are ROLLS OPzV GEL BATTERY
    "Designed and well-suited for regular cycling as well as float and backup applications,
    Rolls sealed OPzV GEL batteries have a low internal resistance than Flooded deep
    cycle models allowing quick recharge and a low self-discharge rate (2% per month).
    Rolls OPzV GEL batteries perform well in installations requiring frequent cycling even
    under extreme operating conditions and offer more than 20-year cycle life in float
    applications at 25ºC (77ºF)."

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    william fitch
    Owner
    www.WeAreSolar.com
    fcfcfc@ptd.net
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