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Lead batteries

Discussion in 'Electronic Design' started by Enzo, Dec 29, 2003.

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  1. Enzo

    Enzo Guest

    Is there anyone that have some experience on charging 2 lead batteries (12V)
    in series ?
    I do not mean the circuit, but if the batteries will be correctly charged or
    will they have some long time problem ?

  2. Most trucks have 24 V electrical systems, fed by two 12 V batteries in
    series. Charging is no problem if they are of identical ampere-hour
    ratings. If not, you do need to be careful not to over-charge the
    smaller one.
  3. Tim Shoppa

    Tim Shoppa Guest

    If the cells are well-matched (same size and from the same batch) there
    isn't an issue. After all, a 12V lead-acid battery is really six 2V cells
    in series. Six 2V cells or twelve 2V cells in series, it's all the same.

    This is all *assuming* the cells are wall-matched and kept matched
    (charged and discharged identically, ideally always in series,
    throughout their lives).

  4. N. Thornton

    N. Thornton Guest

    As long as they have the same capacity rating theres no problem.

    Regards, NT
  5. N. Thornton

    N. Thornton Guest

    Actually I think theyre less fussy than that. As long as theyre the
    same capacity you neednt worry. Charges will equalise during charging:
    the cell that charges first will simply have current continue to flow
    without charging it while the rest catch up.

    When lead acids are paralelled then one needs to use the same batch
    etc, and it isnt recommended.

    Regards, NT
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