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NiFe cell balancer

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  • NiFe cell balancer

    Hello, looking for some guidance on finding a passive or active balancer for a bank of 10 NiFe cells

    I've got the skills to make the PCB and sourcing the chips, but was wondering if something has already been made for this?

  • #2
    No need, unless you have a sick cell. Simply run a couple long absorb cycles and after each one, insure the water levels are OK.
    If after a couple cycles, you still have a low cell, you are going to have to replace it's fluid, which should be done every 8-10 years.
    Nothing gets consumed in a NiFe cell over the years, only the electrolyte gets poisoned from atmospheric Co2.
    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

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    • #3
      OK, that's good to know. Hopefully my adapters are secure enough to maintain a stable atmosphere that should reduce the poisoning...

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      • #4
        NiFe cells are remarkably robust, just not maintenance free. In particular they are not damaged by deep discharge or prolonged overcharge, which removes most of the need for a BMS.
        SunnyBoy 3000 US, 18 BP Solar 175B panels.

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