MBP on all the time?

Discussion in 'MacBook Pro' started by MikeCase, May 2, 2010.

  1. MikeCase macrumors member

    MikeCase

    Joined:
    Aug 19, 2009
    Location:
    Melbourne, FL
    #1
    Searching and MRoogle brought me to threads years ago and I'm not sure if anything might have changed since then.

    I have an '09 13" MBP and since I got the iPad I haven't been using my MBP away from my desk much. I run the battery all the way down once a week to keep it calibrated. When I bought my MBP last year, I thought I would be doing a lot of mobile stuff but now I think I'd be better off with an iMac. Since funds won't allow, it looks like I'll be using the MBP for a while.

    Anyways, would it hurt my MBP to keep it on all the time (without sleep)? I'll keep the ritual of running the battery down regularly. I'm just afraid of something hurting, overheating, etc.

    Thanks!
     
  2. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #2
    It's fine to leave it running as long as you want.
     
  3. PsyD4Me macrumors 6502a

    PsyD4Me

    Joined:
    Mar 11, 2009
    Location:
    under your bed
    #3
    I'm sure that it'll get rest at night unless you're downloading things..I think we all practice this whether we have a macro or a Mac mini
     
  4. Dragonforce macrumors 6502a

    Dragonforce

    Joined:
    Apr 9, 2008
    Location:
    London (Ealing) UK
    #4
    Won't hurt it, and UNIX is designed to run 24/7 anyway...
     
  5. mattrothcline macrumors newbie

    Joined:
    Sep 23, 2009
    #5
    Once a month is (more than) sufficient.
     
  6. xlii macrumors 68000

    xlii

    Joined:
    Sep 19, 2006
    Location:
    Millis, Massachusetts
    #6
    Yes, Apple recommends running the battery down once a month for the sole purpose of keeping it calibrated. Running it down once a week is overkill and will eat through those 1000 power cycles 4 times quicker than once a month.
     
  7. m85476585 macrumors 65816

    Joined:
    Feb 26, 2008
    #7
    Not sure if that was sarcasm. At 1 cycle a week, it will last 192 19 years. At one cycle a month it will last 833 83 years. The battery will obviously die before then even if it is just sitting on a shelf. Keeping the battery cool will help preserve its life, and the best way to keep the battery cool is to turn the computer off. Cycling the battery should also help preserve it, but cycling is different than calibration. Calibration only calibrates the battery life meter, that's it. It is not necessary for the health of the battery. Discharging the battery regularly is good for it if you otherwise have it plugged in all the time, but you don't have to do a full calibration.

    Of course, if you have the computer on/plugged in all the time, why would you care about the battery?
     
  8. MikeCase thread starter macrumors member

    MikeCase

    Joined:
    Aug 19, 2009
    Location:
    Melbourne, FL
    #8
    Thanks everyone for the info, it's much appreciated!
     
  9. scaredpoet macrumors 604

    scaredpoet

    Joined:
    Apr 6, 2007
    #9
    Because the OP's needs may change again in the future?
     
  10. cluthz macrumors 68040

    cluthz

    Joined:
    Jun 15, 2004
    Location:
    Norway
    #10
    I never turn mine off, although it sleeps quite a lot.
    You should not run down battery every week, but rather once a month
     
  11. Ash9414 macrumors 6502

    Joined:
    Apr 25, 2010
    Location:
    United Kingdom
    #11
    Not sure where you got those figures:

    There are 52 weeks in a year, 1000 charge cycles.

    1000/52 = ~20 years

    For once a month.

    1000/12 = ~100 years
     
  12. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #12
    I left/leave mine on all the time. Partly because my magic mouse, seems to wake up my MBP, or some other issue that prevents it from staying a sleep
     
  13. Goettel macrumors member

    Joined:
    Oct 1, 2008
    #13
    It may last 100 years (theoretically) with one cycle a month but I would be surprised to see it last more than 3-4 years. I find the batteries seem to degrade more with time than with usage...
     
  14. Jof macrumors regular

    Joined:
    Oct 2, 2008
    #14
    Set the screen to turn off when you aren't using it though; the light doesn't last forever (apple recommends this too)
     
  15. m85476585 macrumors 65816

    Joined:
    Feb 26, 2008
    #15
    I think I assumed 10000 cycles for some reason.:confused:
     

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