Run a MacBook at full clock speed without a battery

Discussion in 'MacBook' started by yeroc3103, Nov 28, 2010.

  1. yeroc3103 macrumors newbie

    Joined:
    Nov 28, 2010
    #1
    I purchased a broken MacBook (Santa Rosa) from Ebay several month ago. I use it as a media center connected to my home theater. The MacBook was dropped and had a broken screen and a beat up case. It was always the eye sore of my entertainment center. I recently decided to put it in a custom tiny enclosure witch is nothing more than an attractive external hard drive case. I got it all together and everything is running great...except one tiny detail. The MacBook underclocks itself to 1200 MHz when the battery is not connected. After much research I discovered this was intentional by Apple and all advice given to me was just put the battery back. I don't have room to put the battery back I just have it laying next to the computer causing the same eye sore I had before. There has to be a way to "trick" the computer in thinking the battery is connected. I wouldn't mind it if 1200 MHz was enough raw power to decode HD h.264 but its not. Does anyone know a way to either directly attach the mag safe adapter directly to the battery terminals or somehow short the pins to simulate a connected battery? Or better yet a software solution?
     
  2. bestestever, Nov 29, 2010
    Last edited: Nov 29, 2010

    bestestever macrumors newbie

    Joined:
    Nov 22, 2010
    #2
    Uh it may idle at 1200mhz but when more power is needed dont worry it will fully clock to the max speed..,
    Im pretty sure its called speedstep in the c2d's.

    Of corse i am not 100% of your situation.


    Edit, Well im not 100 percent sure anymore, but coolbook may be helpful..

    http://www.macupdate.com/info.php/id/23183/coolbookcontroller

    ""Use your MacBook with full performance without a battery installed.'"
     
  3. oasf macrumors newbie

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    Jan 8, 2011
    #3
  4. MagicBoy macrumors 68040

    MagicBoy

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    Manchester, UK
    #4
  5. iThinkergoiMac macrumors 68030

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    Jan 20, 2010
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    Terra
    #5
    Those reasons imply that MacBooks/MBPs use the battery for a "power boost" if needed. I'm a little skeptical on that one.
     
  6. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #6
    It's true. There are instances where the AC power isn't enough to meet the power demands and the battery is used in addition to AC power. It's not frequent, but it can happen.
     
  7. iThinkergoiMac macrumors 68030

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    #7
    I'm impressed. Why not just make the AC adaptor sufficient to meet the laptop's needs?
     
  8. GGJstudios macrumors Westmere

    GGJstudios

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    May 16, 2008
    #8
    Why use a notebook with the battery out, when it's clearly designed to be used with the battery in? Apple uses an adapter that works perfectly, as long as it and the notebook are used the way they're designed. Apple designs things to work the way they're intended to work, not to accommodate those who want to use it in a manner other than intended.
     
  9. iThinkergoiMac macrumors 68030

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    #9
    Maybe the battery is swelling and it's a fire hazard, but you still need to use the computer. Maybe it's so dead that it doesn't hold any significant amount of charge and the computer can't function on it anyway. Maybe some idiot sold you a MacBook without a battery.

    There are lots of reasons that a MacBook could be used without the battery in. It's not going to be the common scenario, but it's also not going to be so uncommon so as to assume it will never happen.

    I understand Apple's design philosophy, and how things are supposed to work a certain way, but it is my opinion (like it's really going to get anywhere) that the power brick wouldn't get too big if it just delivered enough power.
     
  10. gnasher729 macrumors P6

    gnasher729

    Joined:
    Nov 25, 2005
    #10
    It would be bigger and more expensive. Not more, but some. And most likely the only thing that is not covered are extreme but possible scenarios, like CPU and GPU at full speed, full brightness, using wireless, ethernet and bluetooth at the same time, and spinning up DVD and hard drive at the same time, while there are some fluctuations on your power line that decrease the voltage by 10 percent for a second.

    So do you think Apple should make a bigger and more expensive power adapter, which affects millions of customers, to support half a dozen customers who want to run a MacBook without battery?
     
  11. brdnboy macrumors regular

    Joined:
    Feb 25, 2008
    Location:
    Boulder, CO
    #11
    To put it in perspective, a Mac Mini which uses nearly identical components to a macbook and DOES NOT have a power hungry LCD has a 110W power adapter. If apple wanted to provide the ability to use a macbook without a battery reliably it sounds like it would need at least a 110W power adapter (which is huge).
     
  12. MagicBoy macrumors 68040

    MagicBoy

    Joined:
    May 28, 2006
    Location:
    Manchester, UK
    #12
    Exactly.

    I've got both machines. The MacBook has a 60W AC adaptor which is 1/3rd the size of the Mac Mini brick.

    Ever wondered why your battery slowly drops a little on mains power from 100% to say 97%. It's because the battery bolstering the AC power. Until the battery drops a certain amount it won't start recharging back to 100% to give the battery a longer service life.
     

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