iPro pro 9.7 charge so slow

Discussion in 'iPad' started by Sillythink, Apr 2, 2016.

  1. Sillythink macrumors member

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    Dec 6, 2014
    #1
    It take much longer to charge than my ipad air2, is there anything wrong??
     
  2. Wando64 macrumors 6502

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    Jul 11, 2013
    #2
    The supplied charger is 10w versus the 12w charger for the Air2. Also I presume the battery on the 9.7" has a greater capacity than that on the Air2
     
  3. Sillythink thread starter macrumors member

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    Dec 6, 2014
    #3
    I am using the third-party charger which is using by my air2 previously but it take longer to charge the new ipad pro.
     
  4. MrXiro macrumors 68040

    MrXiro

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    #4
    I'm using the 12 watt charger. Definitely slower.
     
  5. MrXiro macrumors 68040

    MrXiro

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    #5
    I think the new pro is just marginally bigger by like .5 amp. Something is up... It definitely taking much longer to charge up.
     
  6. profets macrumors 68040

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    Mar 18, 2009
    #6
    I noticed the 10w charger in the box. Wonder why they dropped down from 12w?
     
  7. AttilaTheHun macrumors 6502a

    AttilaTheHun

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    #7
    it's slow on the 12.9" model too
     
  8. Ries macrumors 68000

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    Apr 21, 2007
    #8
    Money
     
  9. profets macrumors 68040

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    Mar 18, 2009
    #9
    Anyone know the max wattage the 9.7" Pro can charge from? I don't pay much attention to these details as it'll usually charge overnight. But I do have a 12w charger I use with it.
     
  10. MrXiro macrumors 68040

    MrXiro

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    #10
    I had the iPad at 85% this morning went for an hour walk and it was only at 96% when I got home. Maybe I need to do a battery recalibration.
     
  11. Sillythink thread starter macrumors member

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    Dec 6, 2014
    #11
    I miss my air2 now
     
  12. TrueBlou macrumors demi-god

    TrueBlou

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    Scotland
    #12
    The 12.9" has a 38.5-watt-hour battery compared to the 27.5-watt-hour of the 9.7" so it's going to be slower with that stupid puny charger they give us.

    At least the 12.9" has a faster charging option if you want to shell out the cash for it. But I'm surprised at the 9.7" I didn't expect it to be significantly different from the Air 2 for charging.
     
  13. iregret macrumors 6502

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    #13
    I don't have an iPad air 2, so I don't know. Is it really that much different?
     
  14. TheLondonFella Suspended

    TheLondonFella

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    Oct 6, 2014
    #14
    I timed it earlier, charging from zero (I let the iPad turn itself off, to calibrate).

    It took 3 hours & 40 minutes (give or take a few minutes) for fully charge to 100%.

    Much faster than the iPad 4 which I am coming from, which took 5 hours & 15 minutes.

    My iPhone 6 takes 2 hours & 15 minutes to charge from nothing (once again, when I calibrate) to 100%.

    How long does the Air 2 take to charge from nothing to 100%?
     
  15. profets macrumors 68040

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    Mar 18, 2009
    #15
    Doing some quick reading - it looks like the iPad Air 2 takes roughly 3 hours & 15 minutes to charge from a 12w adapter.

    I guess the battery size decrease from the Air to the Air 2 is why they felt they could put a 10w charger in the box instead.
     
  16. zhenya macrumors 603

    zhenya

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    Jan 6, 2005
    #16
    I would be surprised if there is any significant difference in charge speed between the Air 2 and the Pro. You are probably seeing the combined effects of the 10w vs. 12w charger as stated, plus some of that reduced power is likely going to power background tasks on the iPad as it gets everything set up during the first couple of days usage. That will leave a bit less power available to charge the battery.
     
  17. dannyyankou macrumors 603

    dannyyankou

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    #17
    It's pretty fast for me. I'd say even faster than my Air 2.
     
  18. profets, Apr 3, 2016
    Last edited: Apr 3, 2016

    profets macrumors 68040

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    #18
    I managed to drain the battery to 0 this morning. It's been charging on a 12w charger. 1 hour in it reached 30%. 1:45 in and it's 60%.

    Just over 2 hours showed 70%
    2:30 hit 85%
    3 hours now and its 95%

    And full charge was somewhere between 3:15 and 3:30.
     
  19. melman101 macrumors 68030

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    Sep 3, 2009
    #19
    My iPad Pro 9.7" takes a long time to charge as well. I was at 30% or something when I left 3 hours ago. Now I'm only at 83%. Oh well. I'm not sure what wattage my charger is, it's an old iPad charger.... I didn't use the iPad Pro's adapter that is in the box.

    I love the Smart Keyboard and keep it on. Does that affect battery charging?
     
  20. TheRealAlex macrumors 65816

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    Sep 2, 2015
    #20
    Knowing a little about Lithium Ion batteries coming from my RC Hobby and Flying Drones. The short version is the Slower Lithium Ion batteries are charged the better not only for longevity but for discharge rate.

    Some of my battery packs can be charged at different rates if your charger pumps too much voltage in too fast it can be dangerous or cause swelling of the soft Lithium battery cells

    Now Apple has very good reasons. To switch from 12w to a 10watt charger. All in all it benefits the consumer.
     
  21. Newtons Apple macrumors Pentium

    Newtons Apple

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    Mar 12, 2014
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    Jacksonville, Florida
    #21
    I seldom empty a charged Pro in a day so if I put it on the charger before I go to bed, I do not care how long it takes.
     
  22. masotime, Jun 23, 2016
    Last edited: Jun 23, 2016

    masotime macrumors 68000

    masotime

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    #22
  23. tgara macrumors 6502a

    tgara

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    #23
    Regarding your question on the Smart Keyboard, I don't know if it affects the charging rate when it is attached. As you may know, the discharge rate is slightly higher with the keyboard attached.

    As for me, yes, my iPad Pro 9.7 takes a bit longer to charge than my old iPad Air 1. However, the battery charge seems to last longer on the IPP. So, even if the battery in my Pro is only charged up by a dozen percent or so for a short time, that bit of charge lasts longer than an equivalent (or longer) charge onthe old iPad Air 1. Overall, I'm happier with the battery performance of the iPad Pro than that of the Air 1.
     
  24. RadioGaGa1984 Suspended

    RadioGaGa1984

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    #24
  25. ACG12, Jun 23, 2016
    Last edited: Jun 23, 2016

    ACG12 macrumors 6502

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    #25
    Charge it overnight so you won't have to worry about how long it takes.
     

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