How much time your iPAD needs to fully charge?

Discussion in 'iPad' started by Perene, Jul 16, 2016.

  1. Perene macrumors 6502

    Perene

    Joined:
    Jun 29, 2015
    Location:
    Netherealm
    #1
    I decided to do the following test:

    - First and foremost, run the device’s battery down to zero. And by that, we mean the device runs completely out of juice and powers down on its own.

    - Next, charge the device’s battery all the way up to the 100% mark.

    I tried this with the Pro 9.7 256 GB wifi+cel, used less than a week, and bought a month ago.

    Once the device was turned off and I connected this iPAD to the original charger, the clock started. All the time I let it closed (not using), with the Smart Cover, and in airplane mode.

    It took exactly 3 hours and 42-43 minutes to reach from 0 to 100%.

    This iPAD has only 3 full cycle charges. It's the MLQ62CL/A model.

    I'll conduct this test again, this time with the 4, that was used practically everyday since I bought in 2013, and post the results here, later.
     
  2. Perene thread starter macrumors 6502

    Perene

    Joined:
    Jun 29, 2015
    Location:
    Netherealm
    #2
    OK, final test with another iPAD.

    Model: MD512BZ/A
    iPAD 4th generation, 64 GB, wi-fi only.

    Bought between December 14, 2012 and January 26, 2013 (confirmed). Used everyday since then, most of the time.

    Battery app says it has 805 full cycle-charges.

    It took 4 hours and 40 minutes approximately, to charge this battery, from 0 to 100%. So, overall, I need to wait another hour compared to a brand-new IPP 9.7 that hasn't been used.

    More details about the battery health from both equipments when fully charged (the IPP 9.7 still displaying 100%, but used for a couple of minutes, that's why you see 98% in the first battery info):

    http://imgur.com/a/17oYb

    P.S.: the green screenshots are from the IPP 9.7, the other from the iPAD 4. This app says 0% (perfect) for the IPP, and 30% for the iPAD 4, in terms of degradation.

    P.P.S. The screen brightness was also lowered in both iPADS prior to this test.
     
  3. ctg7w6 macrumors regular

    Joined:
    Oct 23, 2014
  4. pat500000 macrumors 603

    pat500000

    Joined:
    Jun 3, 2015
    #4
    One of the biggest flaw that you failed to mention was what power charger did you use? I use 12 w charger. I think the standard is 10.
     
  5. xraydoc macrumors demi-god

    xraydoc

    Joined:
    Oct 9, 2005
    Location:
    192.168.1.1
    #5
    The 29W charger and USB-C to Lightning cable charges my 12.9" iPad Pro from zero to full in under 3.5hrs.
     
  6. pat500000 macrumors 603

    pat500000

    Joined:
    Jun 3, 2015
    #6
    29w?? When did apple start selling that?
     
  7. iSheep5S macrumors 6502a

    iSheep5S

    Joined:
    Jun 4, 2013
    Location:
    Scotland
    #7
    My iPad Pro 12.9 with the standard charger? I dunno... 3 days? o_O
     
  8. Mlrollin91 macrumors G4

    Mlrollin91

    Joined:
    Nov 20, 2008
    Location:
    Ventura County
    #8
  9. pat500000 macrumors 603

    pat500000

    Joined:
    Jun 3, 2015
    #9
  10. Perene thread starter macrumors 6502

    Perene

    Joined:
    Jun 29, 2015
    Location:
    Netherealm
    #10
    I always use the original charger, with 10W.
     
  11. Newtons Apple macrumors G5

    Newtons Apple

    Joined:
    Mar 12, 2014
    Location:
    Jacksonville, Florida
    #11
    Have no idea how long my two iPad Pro units take. They charge at night and I do not worry about charge time.
     
  12. pat500000 macrumors 603

    pat500000

    Joined:
    Jun 3, 2015
    #12
    Okay that is clear now. That's not bad for 10w
     
  13. masotime macrumors 68000

    masotime

    Joined:
    Jun 24, 2012
    Location:
    San Jose, CA
    #13
    Although not a direct correlation (charging speeds vary depending on the current charge levels), 20% higher charging power is actually quite significant. So if your charging time was 3 hours under 10W, you're talking about a potential 30 minute reduction with 12W ( 3h x 10W / 12W or 16.7% faster)

    If you want the absolute fastest charging time on any iOS lightning device without regard to cost, the most brain-dead approach is to get the 29W adapter + USB-C to lightning. That will charge at the fastest possible rate, be it 10W / 12W / 29W.
     
  14. BallparkDreamer macrumors regular

    Joined:
    Nov 8, 2015
    #14
    My iPad Air 2 seems to take a bit over 2 hours I believe.
     
  15. pat500000 macrumors 603

    pat500000

    Joined:
    Jun 3, 2015
    #15
    I went to Apple Store today and this guy told me that 29 w wasn't recommended because it would kill battery life.
     
  16. masotime macrumors 68000

    masotime

    Joined:
    Jun 24, 2012
    Location:
    San Jose, CA
    #16
    I've never seen any proof of this. Besides, Apple wouldn't enable that functionality if it actually killed the battery.
     
  17. pat500000 macrumors 603

    pat500000

    Joined:
    Jun 3, 2015
    #17
    I should have known this sales rep wouldn't know much about it.
     
  18. Perene thread starter macrumors 6502

    Perene

    Joined:
    Jun 29, 2015
    Location:
    Netherealm
    #18
    It is said that air 2 charges faster than the IPP 9.7, I believe it takes 20 minutes less.
     
  19. Perene thread starter macrumors 6502

    Perene

    Joined:
    Jun 29, 2015
    Location:
    Netherealm
    #19
    A few tips concerning the battery health. The discussion is about the need to fully discharge the battery. It is said that in fact this is detrimental to the capacity:

    http://www.tabletpcreview.com/feature/how-to-extend-the-battery-life-of-your-ipad-or-phone/

    http://forums.imore.com/ask-question/293828-do-we-really-need-fully-discharge-once-month.html

    I was monitoring here the iPad Pro 9.7 I have, one model with 128 GB wifi only, and the other 256 wifi+ cel. After about 22 cycles, the 256 model has lost 1% of its capacity, and after 12 cycles, the 128 one lost 2%.

    What is odd is this: it was 0% until the 10th cycle for the 128, then I let the battery drain to 5% and tried to charge before going to bed. After I wake up the other day, it was down to 2%. There was nothing wrong with the iPad, it was simply the old surge protector that wasn't feeding energy properly, then once I connected the iPad charger to the wall socket directly, it resumed charging.

    However, only after this event is that the app says the battery lost 2% of its capacity. Since I wasn't using before to almost 0%, I can only assume this (or the fact I let on the surge protector without actually charging) was detrimental to the battery health. I only let it drain to 0% once, and both iPads, once I received them.
     

Share This Page