Macbook pro 2011 "not charging"

Discussion in 'MacBook Pro' started by David-fr, Mar 26, 2011.

  1. macrumors 6502

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    #1
  2. macrumors 6502a

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    #2
    Those "heavy duty apps" you're running are requiring enough power that it uses all or almost all the power supplied by the AC adapter, thus not leaving any to charge the battery. It's the same thing as plugging an iPad into a PC to charge it, the port doesn't allow enough power to charge the battery AND to use the iPad, only one or the other.
     
  3. macrumors Westmere

    GGJstudios

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    #3
    Read the AC POWER section of the following link. This should answer most, if not all, of your battery questions:
     
  4. thread starter macrumors 6502

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    #4
    Just got off the phone with Apple Care, they said it is not normal and set my a genius visit.
     
  5. macrumors 6502a

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    #5
    I'm pretty sure it's normal, but you can waste your time with a "genius".
     
  6. macrumors Westmere

    GGJstudios

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    #6
    It is quite normal, despite what one particular AC rep says. Remember "Genius" is their job title, not an indication of their knowledge, intelligence or experience.
     
  7. thread starter macrumors 6502

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    I'll report here what they'll tell me.

    I should be able to use my computer at it's max without it shutting down.
     
  8. macrumors 6502a

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    #8
    What do you mean "shutting down". You only said that it wasn't charging. Not charging and shutting down have nothing to do with each other.
     
  9. thread starter macrumors 6502

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    #9
    If it does not charge and it is been use guess what happens? It will shut down cause the battery ran out.
     
  10. macrumors member

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    #10
    Funny you have this problem, I had this same thing happen to me about an hour ago. I was rendering about 50 frames out of Cinema4D on high res, with some mograph effects, with Miro downloading a movie, photoshop, and Chrome with about 10 tabs open, and I watched as my battery slowly crept from a Full Charge down to 0, then the comp shutoff with a loud click and a violent screen flash. The machine was plugged into the AC adapter the entire time. That should not happen.
     
  11. macrumors 6502a

    neko girl

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    #11
    @Kanthony, it's happened to me too once but I haven't gotten my MBA to do it again..
     
  12. thread starter macrumors 6502

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    #12
    You should call Apple care so they have records of this.
     
  13. macrumors 6502

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    #13
    i have had this last few days - but only running safari which i wouldn't say is massively demanding! brand new 2011 17" i7
     
  14. macrumors 65816

    NZed

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    #14
    are you kidding me??? it does that??? I run Windows 7 on VMware and playing Half Life 1 on it(yes HL 1), Google Chrome, Steam(no games though, just chat), Skype, Messenger for Mac and iTunes and i have no problems. And look what the OP is running? Parallels and 2 programs from parallels, a smiley face program(yahoo messenger i guess), firefox and activity monitor!!! It shouldnt do that!!!
     
  15. macrumors 6502a

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    Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8G4 Safari/6533.18.5)

    Yes, it will happen in some circumstances. MBP quad cores have been measured to use up to 95w of power under heavy CPU load. The power adaptor can only supply 85w. I think it is time that the quad mbp cane with 110w adaptors.

    Those quad cores are insanely fast CPUs but they do suck a lot if power
     
  16. macrumors regular

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    #16


    It's not just the cpu, the GPU also draws more power, and the combination of the two, plus spinning the disk, lighting the display, powering the network card, all combine to take more power than the 85W supply, so it stops charging and supplements with battery power.

    Unless you are in this condition for a loooong time, should be no big deal. I expect, though, that this will be a much bigger problem when you plug in a 10W Thunderbolt drive, and a 5W USB drive. I use multiple external drives, one or two USB and a Firewire, concurrently and see this condition often. With my 2009 MBP, I left it running overnight, and let the BOINC grid agent have all the cpu power, but am not sure I can do that with the 2011 as when I let BOINC have the complete system it immediately goes into the 'not charging' state.
     
  17. macrumors 68020

    aznguyen316

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    #17
    lol tru dat
     
  18. macrumors regular

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    #18
    I have this problem when doing file conversions to my external harddrive. I called apple care they read up on the specs of the external harddrive, at max speed, the harddrive pulls 45w which only leaves 15w left for the computer, which isn't enough. He suggest I get the 85w power adapter or get an external that has its own power source so it doesn't have to draw much power from the firewire port.
     
  19. macrumors 6502

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  20. macrumors newbie

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    #20
    Parallels as a root cause?

    I need to run Parallels in Coherence mode constantly as a basic function of my job, and my late-model MBP (MacBookPro8,3 / i7 / 2.2 GHz) lately has been constantly running at nearly 0% battery power, even though I almost never use it unplugged. I haven't had any sudden power losses, but it's horribly frustrating to have my entire system slow down periodically when I have the relatively unusual high-CPU process I need to do. Generally speaking, I'm not under a large load of any sort doing anything very involved, although I do tend to have quite a few programs running (but inactive in the background). I just got back from a 3 1/2 hour lunch meeting during which my machine was on the screen saver and I had nothing happening on it during my meeting. Straight upon returning to work, it had 2% battery power and the fans are cooking like mad... looking at the Activity Monitor, I saw that my JIRA client (a java app AFAIK) was using 400% CPU and whatever else... while it wasn't doing anything? This isn't the rule, that may have been an anomaly, but still this issue has been happening to me pretty constantly over the last month or so whereas previously I don't recall ever having to deal with it at all!

    My coworker who shares the same basic sort of usage pattern (we're both web developers) has also had a lot of issues with his machine just not charging or barely charging over a long period of time when it's plugged in, and he says that almost always he can "fix" the issue by simply suspending the Parallels VM and starting it back up again. My mileage has varied with that solution, but overall it does seem really bizarre and is horribly frustrating to constantly be battling the power supply issue with a machine that is essentially just a desktop replacement and is plugged in 95% of the time.
     
  21. macrumors newbie

    Joined:
    Apr 26, 2012
    #21
    I had VMWare Fusion running Win 7, Firefox, Safari, Mail, MS Outlook, USB to HDMI, two monitors and noticed this morning that my brand new MBP 17" didn't want to charge. Quit VMWare Fusion and it's charging now...obviously, reports of the Quad Core sucking power is true. Not a big deal, can't really expect a laptop to run all of the above with just an 85W Power Supply. Would be nice to see a bigger adapter.
     
  22. macrumors newbie

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    #22
    very useful

    THANK YOU this one was extremely useful

     

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