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  • Need help. Epever charge parameters.

    Need help setting up my epever charge controller for 4 12v flooded lead acid deep cycle batteries. I currently have it setup generically and know its not right.

    Panelas are : 3s2p
    Batteries are : 4p interstate srm27
    Charge controller is :
    Epever tracer10415an
    100amp
    150v

  • #2
    Are your batteries wired for 12,, 24, or 48V ? Really, your manual should cover that setup .
    Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister

    Comment


    • #3
      Originally posted by Mike90250 View Post
      Are your batteries wired for 12,, 24, or 48V ? Really, your manual should cover that setup .
      12volt 4 batteries setup in 4p. The manual says to select flooded for the generic setting. It offers custom/user settings for better charging.

      Comment


      • #4
        4 parallel batteries - check this out for best wiring http://www.smartgauge.co.uk/batt_con.html

        Now your batteries came out of a factory, and to improve on the charge controller Generic setting, each factory has specific settings for each line of batteries they make. Once you discover the battery Mfg and their settings, that's what you use.

        I'll guess those 4 batteries are each about 120ah (size Group27) and to properly charge the bank, you will need about 50A from the solar, in order to charge them fast enough to prevent a slow six months death from sulfation. That means your Charge Controller needs to harvest about 700w of power, and you would need about 1,000w of panels to get that !
        Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
        || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
        || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

        solar: http://tinyurl.com/LMR-Solar
        gen: http://tinyurl.com/LMR-Lister

        Comment


        • #5
          Originally posted by Mike90250 View Post
          4 parallel batteries - check this out for best wiring http://www.smartgauge.co.uk/batt_con.html

          Now your batteries came out of a factory, and to improve on the charge controller Generic setting, each factory has specific settings for each line of batteries they make. Once you discover the battery Mfg and their settings, that's what you use.

          I'll guess those 4 batteries are each about 120ah (size Group27) and to properly charge the bank, you will need about 50A from the solar, in order to charge them fast enough to prevent a slow six months death from sulfation. That means your Charge Controller needs to harvest about 700w of power, and you would need about 1,000w of panels to get that !
          Fair enough. Guess I was hoping for more help in the programing area. Iv looked everywhere and can't find the info. My system will generate well over that need.

          Comment


          • #6
            First, you need the Mfg's specs for the battery,
            https://www.interstatebatteries.com/products/SRM-27
            600 Cold Cranking Amps (CCA)
            88ah ( so you only need 35A charging for the bank )
            no other data

            https://www.interstatebatteries.com/...nd-maintenance
            about 1/3 way down is a chart with charging specs & bolt torque specs
            Equalize is only done 1x a month, or less, and only after a complete Absorb cycle

            That's about all they have. Your batteries are a bastard cross between a starting battery and a deep cycle battery
            Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
            || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
            || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

            solar: http://tinyurl.com/LMR-Solar
            gen: http://tinyurl.com/LMR-Lister

            Comment


            • #7
              Originally posted by Mike90250 View Post
              First, you need the Mfg's specs for the battery,
              https://www.interstatebatteries.com/products/SRM-27
              600 Cold Cranking Amps (CCA)
              88ah ( so you only need 35A charging for the bank )
              no other data

              https://www.interstatebatteries.com/...nd-maintenance
              about 1/3 way down is a chart with charging specs & bolt torque specs
              Equalize is only done 1x a month, or less, and only after a complete Absorb cycle

              That's about all they have. Your batteries are a bastard cross between a starting battery and a deep cycle battery
              Sucks just needs these to last till my lifepo batteries come in.
              right now I have zero clue what to do with the rest of the settings. Like float charge and all the others. This is what iv been fighting.
              any recommendations? And thankyou for sticking with me.

              Comment


              • #8
                So, until you thoroughly understand how to charge FLA batteries, which are quite forgiving, your LiPo batteries don't stand a chance.


                Use the chart to program your controller. If your controller does not have custom programming, I strongly suspect you will need a configurable & Interactive with the battery BMS, to charge the LiPo battery.
                Golf Cart Battery charging:

                interstate golf cart charging.gif

                And here's a chart that explains the different stages of charging. Usually, a BMS is a backup safety for the batteries and must interact with the charger to
                throttle the charger back when the battery is full. Your panels can deliver many many amps, a BMS can only bypass/shunt 1 or 2 amps

                MS_charge_stages.png

                Stage 1 = Bulk
                Stage 2 = Absorb
                Stage 3 = float
                Many solar installs will never reach float because there often is not enough sun hours to get a full charge. Batteries will suffer from this.
                Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
                || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
                || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

                solar: http://tinyurl.com/LMR-Solar
                gen: http://tinyurl.com/LMR-Lister

                Comment


                • #9
                  Originally posted by Mike90250 View Post
                  So, until you thoroughly understand how to charge FLA batteries, which are quite forgiving, your LiPo batteries don't stand a chance.


                  Use the chart to program your controller. If your controller does not have custom programming, I strongly suspect you will need a configurable & Interactive with the battery BMS, to charge the LiPo battery.
                  Golf Cart Battery charging:

                  interstate golf cart charging.gif

                  And here's a chart that explains the different stages of charging. Usually, a BMS is a backup safety for the batteries and must interact with the charger to
                  throttle the charger back when the battery is full. Your panels can deliver many many amps, a BMS can only bypass/shunt 1 or 2 amps

                  MS_charge_stages.png

                  Stage 1 = Bulk
                  Stage 2 = Absorb
                  Stage 3 = float
                  Many solar installs will never reach float because there often is not enough sun hours to get a full charge. Batteries will suffer from this.
                  Thankyou. This help alot. Soon ill have all 35 panels up and the rest of my controller's.
                  I'm lifepo batteries will be a new curve. But ill learn it none the less. As a engineer I pickup quick. Thankyou for all the help.

                  Comment

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