MBP fan speed when charging ?

Discussion in 'MacBook Pro' started by Joko, Mar 10, 2008.

  1. Joko macrumors 6502

    Joko

    Joined:
    Jan 30, 2008
    #1
    My fan speed gets really high when charging, sometimes up to 6000rpm, and this is without any apps running. As soon as I disconnect the charger it decreases again to 2000rpm. Is this normal?

    Thanks.
     
  2. markrivers macrumors 6502a

    markrivers

    Joined:
    Feb 9, 2008
    Location:
    Valencia, California
    #2
    no it's not.
    mine stays around 1999-2006 on both fans.
    make sure you don't have any programs running in the background
     
  3. Joko thread starter macrumors 6502

    Joko

    Joined:
    Jan 30, 2008
    #3
    Thanks for the reply. I have 0 programs running. It happens even when i connect it in the morning when the machine is cold. I think somewhere it has developed a hyper-sensitivity to the voltage?
     
  4. lukoson macrumors member

    Joined:
    Jan 24, 2008
    #4
    i'm having the exact same problem. It didn't use to happen. Its got me annoyed and worried.
     
  5. jjahshik32 macrumors 603

    Joined:
    Sep 4, 2006
    #5
    I noticed that my mbp even if I push the cpu/gpu the fans never go above 2000 rpm.. is it supposed to go up when reaching 58C-62C?
     
  6. alphaod macrumors Core

    alphaod

    Joined:
    Feb 9, 2008
    Location:
    NYC
    #6
    My only speeds up at around 65ºC only when it's plugged in.
     
  7. agore macrumors member

    Joined:
    Oct 26, 2006
    #7
    Higher fan speed when charging an MBP is normal, because the battery gets warm as it charges. I've never seen 6000 rpm in this situation, though.
     
  8. noodle654 macrumors 68020

    noodle654

    Joined:
    Jun 2, 2005
    Location:
    Never Ender
    #8
    My fans dont turn on until about 155*F (68C), if that helps. My computer gets very warm while charging, its right now at 140*F.
     
  9. e12a macrumors 68000

    e12a

    Joined:
    Oct 28, 2006
    #9
    spotlight could be indexing your files. happens sometimes when i leave my computer on overnight, i just wake up to screaming fans (no pun intended). No programs but adium and transmission running. after a while it quiets down again.
     
  10. MattZani macrumors 68030

    MattZani

    Joined:
    Apr 20, 2008
    Location:
    UK
    #10
    Nope, mine will sit at 3000 even at 70C, i put it upto 6000 manually if its there :p
     
  11. lukoson macrumors member

    Joined:
    Jan 24, 2008
    #11
    I'm noticing that it if I plug it in with about 50% charge remaining the fans won't speed up will stay around 2000. But, if I let them run down to less than 20% battery remaining they will kick up to the mid 4000s and if I let them run down even more they will go up to 6000rpm. But I should be letting my battery drain, right? I thought that I've read that the battery likes to be used this is why I began letting it drain to the near end. Again, there are no other programs running, its definitely a charging the battery issue that causes the fans to speed up.
     

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