Shouldn't Wi-fi model have much better battery life than 3G/4G models?

Discussion in 'iPad' started by hcho3, Mar 17, 2012.

  1. hcho3 macrumors 68030

    Joined:
    May 13, 2010
    #1
    I am not an engineer, but I was just wondering...


    Shouldn't Wi-fi model have much better battery life than LTE ones?

    Because LTE is a battery killer, but I only have Wi-fi models. Shouldn't Wi-fi ones have much much battery life than LTE?

    LTE now gets 9 hours and Wi-fi gets 10 hours.

    Is this accurate?
     
  2. r.j.s Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Texas
    #2
    Better LTE radios use less power than previous LTE radios.
     
  3. jeffg819 macrumors regular

    Joined:
    Dec 25, 2006
    #3
    I was wondering the same thing. I'm not an engineer but it sounds probable to me.
     
  4. 184550 Guest

    Joined:
    May 8, 2008
    #4
    Sure, if one was to only use 3G/4G/LTE their battery life would not be as good.

    However, if cellular data was turned off, as mine is, their battery life would be just as good.
     
  5. KoukiFC3S macrumors 6502a

    Joined:
    Jul 4, 2010
    #5
    The screen is the biggest power sucker, so that's why the numbers are so close.
     
  6. Craiger macrumors 6502a

    Craiger

    Joined:
    Jul 11, 2007
    #6
    This is what I was going to say. Some place claimed it used twice as many led's for the backlight.
     
  7. Summez macrumors member

    Summez

    Joined:
    Mar 20, 2011
    #7
    I think it's because the main drain on the battery now is the retina display and a5x chip, but when I first saw the keynote I was surprised that the bigger battery meant there was not a small increase in battery life for the wifi model I expected the 4g to have the same as the 3G iPad 2.
     
  8. Stealthipad macrumors 68040

    Stealthipad

    Joined:
    Apr 30, 2010
    #8
    Only time a LTE might use more power is while on LTE. I have LTE but have yet to have the need to use LTE. The day will come, it has before and I will be glad I got it.
     

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