Battery drain while sleeping

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

  1. sunsnewmac macrumors 6502

    sunsnewmac

    Joined:
    Mar 3, 2007
    #1
    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?

    Thanks
     
  2. yellow Moderator emeritus

    yellow

    Joined:
    Oct 21, 2003
    Location:
    Portland, OR
    #2
    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

    Joined:
    Aug 15, 2001
    Location:
    The Cool Part of CA, USA
    #3
    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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