battery cycles

Discussion in 'MacBook Pro' started by SilentLoner, Feb 4, 2008.

  1. SilentLoner macrumors 65816

    SilentLoner

    Joined:
    Dec 29, 2007
    #1
    I just checked on my istat widget and I see my battery has been through 6 cycles, what does this mean?
     
  2. motulist macrumors 601

    motulist

    Joined:
    Dec 2, 2003
    #2
    It's a measure of battery health. The more cycles a battery has been through, the less capacity it has to store power in future recharges. So the more cycles a battery has been through, the less time it will be able to keep your laptop running when starting from a full charge.

    A cycle is when a battery has fully discharged it's maximum power storage capacity. e.g. if a battery is fully charged and then run down to zero, that equals 1 cycle. If a fully charged battery is run down to 50%, recharged to full, and then run down to 50% a second time, that also equals 1 cycle.
     

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