Amps

jsummers72
jsummers72 Registered Users Posts: 2 ✭
in Solar Information links & sources, event announcements #1
How many amps will my 24 volt Surrette battery bank produce? 
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  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    #2
    What size are the batteries ?   2v 400ah ?   6V 200ah ?    12V 100ah ?
      The factory data will show what the batteries can safely deliver.  Lead acid batteries can supply
    thousands of amps for a couple seconds,  hundreds of amps for a couple minutes, and a couple of amps for dozens of hours.
    Excess current draw from a battery ( like shorted with a wrench ) can damage the battery, or even cause an internal steam explosion from rapid heating of the electrolyte.
    Powerfab top of pole PV mount | 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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  • jsummers72
    jsummers72 Registered Users Posts: 2 ✭
    #3
    They are four-  6 volt , Rolls Surrette S6LI 6 HC . 
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  • Photowhit
    Photowhit Solar Expert Posts: 6,006 ✭✭✭✭✭
    #4
    It's not really a complete question, even knowing the battery.

    First you have 4 - 6volt batteries in series for 24 volt. In series the volts add and the amps remain the same.

    You can go to your manual and see that the batteries are rated at 390 ah total at a 20 hr discharge.
    That would be 1/20th of 390ah or about 19.5 amps per hour. If you wanted to pull more amps your manual will help.


    S6 L16 (solar-electric.com)

    As you use more than 1/20th of the capacity, the effective capacity is smaller.

    In the end, the battery doesn't produce amps, rather it stores them...


    Home system 4000 watt (Evergreen) array standing, with 2 Midnite Classic Lites,  Midnite E-panel, Magnum MS4024, Prosine 1800(now backup) and Exeltech 1100(former backup...lol), 660 ah 24v Forklift battery(now 10 years old). Off grid for 20 years (if I include 8 months on a bicycle).
    - Assorted other systems, pieces and to many panels in the closet to not do more projects.
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