MBP 2 Months Old, 7 Battery Cycles...OK?

Discussion in 'MacBook Pro' started by BugsBunny, Aug 11, 2007.

  1. BugsBunny macrumors member

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    Jun 16, 2007
    #1
    my MBP is almost exactly two months old now, and my iStat widget is telling me I've gone through 7 cycles. I guess that means I'm cycling it a little less than once a week...I keep it plugged in while using it at my desk, but take it around the house sometimes (once per week, I suppose)...is that alright for decent battery life?

    And on the other hand, once I go to school in three weeks, I'll probably be cycling it almost daily M-F as I take it to class, and then leaving it plugged in all weekend...will that be alright for decent battery life?
     
  2. flopticalcube macrumors G4

    flopticalcube

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    #2
    Apple figures an average battery life of about 500 cycles (resulting in about 50% of original capacity). This would take 18 months if you cycled it once per day.
     
  3. pianodude123 macrumors 6502a

    pianodude123

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  4. BugsBunny thread starter macrumors member

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    #4
    but isn't there something to the fact that not cycling it properly/leaving it plugged in kills the cycles? that's more what i was alluding to...
     
  5. flopticalcube macrumors G4

    flopticalcube

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    #5
    Yes. Lithium ion batteries like to be exercised occasionally. See more here: www.batteryuniversity.com

    When I am not using the battery a lot, I let mine sleep unplugged overnight. This uses about 10% of the battery every night. I then recharge it in the morning. Shallow cycling like this is best for these batteries.
     
  6. noodle654 macrumors 68020

    noodle654

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    #6
    WHen you store your battery for a long time, they say to leave the battery half charged. I think you are supposed to do a full battery drainage every month (empty your battery completely).
     
  7. vicious7 macrumors 6502a

    vicious7

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    #7
    Calibrate once a month, yep. But I didn't know that we could shallow charge these things. That's good to know. Thanks.
     
  8. AHDuke99 macrumors 68020

    AHDuke99

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    #8
    hell i plug it in when i'm at my desk and dont when i'm not. i dont shallow charge it ever. ive been through 123 cycles since buying it in september.
     
  9. giganten macrumors 6502a

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    Jan 23, 2006
    #9
    Mine is almost 2 months to I think and I have 6 cycles.
     
  10. nightelf macrumors 6502

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    Mar 25, 2003
    #10
    My MBP has 9 cycles in about 10 days, and the health is 97%.
     
  11. amusiccale macrumors 6502

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    Jun 5, 2007
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    PA
    #11
    3 months, 12 cycles, 100% health (5512 mAh)

    When it comes time to return to university, the cycles may increase. Full battery discharge each month seems like a good plan for desk-tethered people like myself.
     

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