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Confusion over Paralleling Flooded blocks

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  • Confusion over Paralleling Flooded blocks

    Two things I don't understand about how one should not parallel blocks.

    I have read this thread:

    1- Why does periodic EQ not balance the lot when paralleled? I would have thought at those higher voltages they would balance and stay nice & balanced over their life. Is it simply a matter of too much time needed for each EQ?

    2- I don't understand when they say parallel at cell level not block level, but then recommend a 6V rolls battery which is 3 cells or a block. So with using something like 2x 6V 800AH blocks in series, wouldn't this have the same problem? Compared to 4x 12V 200AH.

    EDIT: ok ignore #2, for some reason I forgot it was a series setup.
    Last edited by Jman; 09-14-2019, 06:45 AM.

  • #2
    The amount of time required to balance voltages, exceeds the available daily solar recharge hours.

    In a telecom install, where there are 3 months to balance the cells, there is no problem.
    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