17" Battery 2010 vs 2011, Indeed Smaller ?

Discussion in 'MacBook Pro' started by Jazwire, Feb 25, 2011.

  1. Jazwire macrumors 6502a

    Jazwire

    Joined:
    Jun 20, 2009
    Location:
    127.0.0.1
    #1
    I have a 2011 17" I7 2.3 Quad, & a 2010 17" I7 2.66

    It appears the 2011 models do not have the same size battery and it is indeed smaller.
    According to "About this Mac"
    2010 I7 - 17" - Full Charge Capacity - 12,576 (mAh)
    2011 I7 - 17" Full Charge Capacity - 8,888 (mAh)

    Unless there is another number or stat I should be looking at.
    I am waiting for my 2010 to fully charge to see the battery life time is comparatively.

    I will update as soon as it is done.
     
  2. Erasmus macrumors 68030

    Erasmus

    Joined:
    Jun 22, 2006
    Location:
    Hiding from Omnius in Australia
    #2
    The Apple website says the new batteries are 95Wh. Which I'm sure is at the very least close to the old capacities.

    Maybe the new batteries operate at a higher voltage, and hence hold less mAh?
     
  3. The-Pro macrumors 65816

    Joined:
    Dec 2, 2010
    Location:
    Germany
    #3
    i read somewhere that the battery in the 2010 17" runs at 7.9V (i think) and the 2011 17" battery at like 10.8V. dont know the exact voltages, i do think they are correct, i read this like 2 weeks back. so the batteries have the same overall capacity although the mAh is less. dont ask my why, or how this works, i dont get it :D
     
  4. johnnyturbouk macrumors 68000

    johnnyturbouk

    Joined:
    Feb 9, 2011
    Location:
    on the yellow [oled] brick road to tech nirvana.
    #4
    Where the physics boffs at? Lol

    All I can remember is ohms law V=IR

    I'm just a humble anaesthetist
     

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