Aftermarket Power Supply

Discussion in 'MacBook Pro' started by w00t951, Apr 7, 2011.

  1. w00t951 macrumors 68000

    w00t951

    Joined:
    Jan 6, 2009
    Location:
    Pittsburgh, PA
    #1
    The 2008 Macbook Pro consumed slightly more power than the power brick could output, so the battery discharged a bit while playing games.

    The 2011 Macbook Pro consumes far more power than the power brick can output, making the battery drain to the point of charging after an hour of gaming.

    Is there an aftermarket power supply that is reliable and of good quality that will supply more than 85W of power? Thanks.
     
  2. simsaladimbamba

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    Nov 28, 2010
    Location:
    located
    #2
    No, as the MagSafe adapter is patented to Apple and Apple will not give out licenses for it.
     
  3. GGJstudios macrumors Westmere

    GGJstudios

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    May 16, 2008
    #3
    I'm not sure it would help, even if you could find one. MagSafe adapters and Macs are designed to control how much charge flows to the battery. Even if you found a more powerful adapter, it most likely would get throttled, so you'd end up with no benefit over the 85W adapter. I wouldn't trust an adapter that didn't come from Apple.
     
  4. Macsavvytech macrumors 6502a

    Macsavvytech

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    May 25, 2010
    #4
    Odd, i've done some pretty big stuff on these machines in my time ...
    Never had this problem? Maybe Australian power supplies are better :p
     
  5. mulo macrumors 68020

    mulo

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    Behind you
    #5
    2011 MBP easily eats 100W apple should make a 120W power supply...
     
  6. ivoruest macrumors 6502

    ivoruest

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    Jul 12, 2010
    Location:
    Guatemala
    #6
    I'm actually very dissapointed with this. I don't like my battery draining everytime I game but I really be very angry if the solution were to underclock the gfx card with a firmware update.

    I really want a 120W supply for my MBP.
     
  7. GGJstudios macrumors Westmere

    GGJstudios

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    May 16, 2008
    #7
    Read post #3. Even if you found one, it wouldn't help.
     
  8. wct097 macrumors 6502

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    Nov 30, 2010
    #8
    I have an early 2011 MBP and I've never had an issue with the battery draining while gaming with the power adapter plugged in.
     
  9. GGJstudios macrumors Westmere

    GGJstudios

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    May 16, 2008
    #9
    It depends on the game, as some are more resource-intensive than others. It can happen.
     
  10. wct097 macrumors 6502

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    Nov 30, 2010
    #10
    That seems like a design flaw if true. Again, I've not seen it in Diablo, WoW, or when running multiple VMs at the same time. In my case, games are running off of the HDD which means my laptop is powering both the SSD & HDD for the duration of the game.
     
  11. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #11
    No, it's the way it's designed. While some may disagree with the design, it's not a flaw.

    It's normal for your MBP to draw power from both AC and battery during periods of extreme demand, such as gaming or other multimedia operations. This can cause your battery to stop charging or even drain. Read the AC POWER section of the following link. This should answer most, if not all, of your battery questions:
     
  12. wct097 macrumors 6502

    Joined:
    Nov 30, 2010
    #12
    A design flaw doesn't have to be unintentional to be considered a design flaw.

    I did a quick test to see if I could replicate this issue, and I was able to do so. With WoW, Diablo, a VM, and a whole bunch of terminal "yes >/dev/null &" commands going, I show a 0.7 watt battery usage while plugged in.

    You learn something new every day, or so they say...
     
  13. Icy1007 macrumors 6502a

    Icy1007

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    Feb 26, 2011
    Location:
    Cleveland, OH
    #13
    What is the wattage of the power supply on the retina MacBook Pro? It has a much larger battery than the non-retina MacBook Pro.

    ----------

    It's not a flaw if it was designed that way. It would just be a bad design choice.
     
  14. GGJstudios macrumors Westmere

    GGJstudios

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    #14
    MacBook Pro with Retina display - Technical Specifications
     
  15. wct097 macrumors 6502

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    #15
    I counter that a bad design and a design flaw are semantically the same thing. An intentional design can be a flaw, in my book.
     
  16. Ryan1524 macrumors 65816

    Ryan1524

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    Apr 9, 2003
    Location:
    Canada GTA
    #16
    Even if a knock-off is available, Apple's power adapters are so cleanly and elegantly engineered that I won't want the knock-off. At least based on their iPhone chargers.


    As for battery drain while plugged in, that seems odd. Most power management systems shouldn't let it dip below 95%. Li-ion/poly often needs this mechanism (shuts off, then recharges again).
     
  17. ivoruest macrumors 6502

    ivoruest

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    Jul 12, 2010
    Location:
    Guatemala
    #17
    Yep, you're right on your post, but I was thinking maybe Apple would care some and launch a 120W supply or something capable of powering my MBP enough.

    BTW I don't plan on buying any third party power accesories for my machine.:rolleyes:
     
  18. GGJstudios macrumors Westmere

    GGJstudios

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    May 16, 2008
    #18
    It doesn't look like that would happen anytime soon, considering they just released the RMBP with an 85w power adapter.
     
  19. nurv2600 macrumors member

    Joined:
    Aug 28, 2009
    #19
    Absolutely, my 2014 MBP Retina will drain the battery from 100% to 1% in about 6-8 hours of gaming (granted, the GPU is overclocked...) Luckily at this point, the GPU overclock and CPU turbo boosts throttle back and it maintains charge around 2-4%. I've tested this numerous time both with intense gaming under Windows 7, 8.1, and 10, as well as leaving it on overnight running an intense scene. I wish I could find a knockoff adaptor higher than 85W (I know knockoffs exist, I've seen them for sale and in real life, but they're all 85W).
     
  20. Samuelsan2001 macrumors 603

    Joined:
    Oct 24, 2013
    #20
    It's not a design flaw and not a bad choice, if the other option is killing your battery in less than a year (windows laptops anyone??). It seems to me the only people making bad choices are those of you choosing to run denmanding games on a laptop plugged in for more than 8 hours at a time when a desktop or a console is the correct tool for the job.
     

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