17" Battery 2010 vs 2011, Indeed Smaller ?

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

  1. Jazwire macrumors 6502a


    Jun 20, 2009
    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


    Jun 22, 2006
    Hiding from Omnius in Australia
    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

    Dec 2, 2010
    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


    Feb 9, 2011
    on the yellow [oled] brick road to tech nirvana.
    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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