How is battery capacity calculated ?

Discussion in 'Electronic Design' started by, Jan 10, 2014.

  1. Guest

    To all the electronics gurus on this newsgroup -
    how is battery capacity decided - for example
    if I buy a 6 Volt 5AH sealed lead acid battery,
    how did the manufacturer come up with the number
    5AH ?
    , Jan 10, 2014
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  2. Phil Allison Guest

    ** You could easily Google that question you know.


    For SLA batteries, makers use the "20 hour rate" for the published AH

    So for 5AH, the battery is discharged at 250mA for 20 hours for a final
    terminal voltage not less than 1.7V per cell.

    ..... Phil
    Phil Allison, Jan 10, 2014
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  3. Artem Guest

    Who is the manufacturer? Some manufacturers provide discharge/charge curves. Bear in mind that the lead-acid batteries rapidly degrade at 100% charge / discharge cycle.
    Artem, Jan 10, 2014
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