iPro pro 9.7 charge so slow

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

  1. Sillythink macrumors member

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


    Jul 11, 2013
    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

    Dec 6, 2014
    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


    Nov 2, 2007
    Los Angeles
    I'm using the 12 watt charger. Definitely slower.
  5. MrXiro macrumors 68040


    Nov 2, 2007
    Los Angeles
    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 601

    Mar 18, 2009
    I noticed the 10w charger in the box. Wonder why they dropped down from 12w?
  7. AttilaTheHun macrumors 65816


    Feb 18, 2010
    it's slow on the 12.9" model too
  8. Ries macrumors 68000

    Apr 21, 2007
  9. profets macrumors 601

    Mar 18, 2009
    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


    Nov 2, 2007
    Los Angeles
    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

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


    Sep 16, 2014
    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 6502a

    Jan 23, 2012
    I don't have an iPad air 2, so I don't know. Is it really that much different?
  14. TheLondonFella Suspended


    Oct 6, 2014
    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 601

    Mar 18, 2009
    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


    Jan 6, 2005
    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 604


    Mar 2, 2012
    Scarsdale, NY
    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 601

    Mar 18, 2009
    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

    Sep 3, 2009
    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 68000

    Sep 2, 2015
    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 Core

    Newtons Apple

    Mar 12, 2014
    Jacksonville, Florida
    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 68020


    Jun 24, 2012
    San Jose, CA
  23. tgara macrumors 6502a


    Jul 17, 2012
    Connecticut, USA
    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


    May 23, 2015
  25. ACG12, Jun 23, 2016
    Last edited: Jun 23, 2016

    ACG12 macrumors 6502a

    Jun 9, 2015
    Charge it overnight so you won't have to worry about how long it takes.

Share This Page