Power adapter heat

Discussion in 'MacBook Pro' started by cool11, Apr 16, 2014.

  1. cool11 macrumors 65816

    cool11

    Joined:
    Sep 3, 2006
    #1
    My rmbp power adapter gets always too hot when I am working with my mac.
    I don't wanna wake up one day to find out that the power adapter is 'burned' and stopped working.
    Can I do something about it?
    Maybe put it on a cooler? Or anything else?
    I 've seen many power adapters of other netbooks but I think this is one of the hottest and I am a little but anxious about it, because replacing it maybe means for me lost working days with my mac.
    I want your opinions and possible solutions about it.
     
  2. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #2
    It is very normal for it to get very hot. If it does get to hot, it will turn itself off via a thermal switch.
     
  3. simon48 macrumors 65816

    simon48

    Joined:
    Sep 1, 2010
    #3
    They just got hot, that's how they are.

    You can always pull some of the heat into your feet and keep nice and warm. ;)

    Yep, that's a good point. They will turn off if they get too hot, I've triggered it before by having it tucked under a blanket.
     
  4. Commy1 macrumors 6502a

    Commy1

    Joined:
    Feb 25, 2013
    #4
    I thought I was weird for doing this but I see I'm not alone :D
     
  5. cool11 thread starter macrumors 65816

    cool11

    Joined:
    Sep 3, 2006
    #5
    So, is it a normal state?
    I should be happy to see it so hot?
    No danger to turn useless because of heat?
     
  6. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #6
    It's completely normal, especially when charging.
     
  7. Barney63 macrumors 6502a

    Barney63

    Joined:
    Jan 9, 2014
    Location:
    Bolton, UK.
    #7
    Mine has been on for the last 36 hours and isn't even warm!:confused:

    Barney
     
  8. samanthas macrumors regular

    Joined:
    Sep 21, 2005
    Location:
    Portland, OR
    #8
    If it's been on the power adapter for 36 hours then it should be 100% charged. It shouldn't get warm or hot when it's not charging. Mine has been plugged in for like 1 week now. No heat.
     
  9. simon48 macrumors 65816

    simon48

    Joined:
    Sep 1, 2010
    #9
    The adapters come in different wattages so they don't all heat up the same.
     
  10. Altemose macrumors G3

    Altemose

    Joined:
    Mar 26, 2013
    Location:
    Elkton, Maryland
    #10
    It depends upon what surface it is on. When I use my MacBook Pro for encoding sessions for HD video, the Mac itself and the power cord get hot...

    Please keep it under good authority not to place it on carpet or on a blanket or cloth. A hard surface like a table or hard floor will keep your adapter cool. Another thing to note, is to ensure that you are using the appropriate wattage adapter.
     
  11. joe-h2o macrumors 6502a

    Joined:
    Jun 24, 2012
    #11
    The Macbook Pro knows what adapter is connected, so if you use one that is lower spec (e.g., connect a 60W one to a 15" MBP) then the charging system will adjust accordingly. I'm not sure if it will warn you that you are under powering, but all that will happen is that if you are under sustained high load for a long time with the lower-power charger on a 15" is that the battery may slowly drain to supplement the power.

    If you're consistently using a lower-power charger with a 15" then there is a possibility that it will be warmer under more 'idle' circumstances (generally when not charging the battery the adapter stays cool), but it will not damage it or the laptop.
     
  12. Altemose macrumors G3

    Altemose

    Joined:
    Mar 26, 2013
    Location:
    Elkton, Maryland
    #12
    You're right. It won't damage it but I brought it up because it does make the adapter hotter, especially under load.
     
  13. NukeIT macrumors regular

    Joined:
    Mar 20, 2013

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