Battery drain while sleeping

Discussion in 'MacBook Pro' started by sunsnewmac, Aug 20, 2007.

  1. sunsnewmac macrumors 6502


    Mar 3, 2007
    While sleeping, my MB battery drains about 1% per hour. I left it unplugged but sleeping for just over a day and the charge went from 100% to 70% in just that period of time. Is that normal?

    Also, my MB is 15 months old and the battery capacity (according to Coconut) is 86%. Is that about average for a machine this age?

  2. yellow Moderator emeritus


    Oct 21, 2003
    Portland, OR
    AFAIamconcerned, yes to both questions.

    And the lowered battery life means that it will appear that power is drained more quickly.
  3. Makosuke macrumors 603

    Aug 15, 2001
    The Cool Part of CA, USA
    1% per hour sounds just about right based on my experience with a number of laptops, as well.

    The remaining battery capacity will vary wildly based on how you use your computer--that is, plugged in most of the time versus a couple of charge-discharge cycles a day if you're a road warrior. But 86% for 15 months sounds totally normal to me.

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