iPad Pro Use a MBP 61w charger on 11" iPad Pro?

Discussion in 'iPad' started by kp98077, May 6, 2019.

  1. kp98077 macrumors 6502

    kp98077

    Joined:
    Oct 26, 2010
    #1
    wanted to see, for fast charging if it is safe and ok for and iPad 11" pro to use a 61w charger from a 2018 MBP? When you read online, it doesn't seem to be discouraged, yet, seems like a lot of power to put towards a smaller device? Any experience or opinions with this?

    thanks-
     
  2. tps3443, May 6, 2019
    Last edited: May 6, 2019

    tps3443 macrumors 6502a

    tps3443

    Joined:
    Jan 24, 2019
    Location:
    NC,USA
    #2
    It is 100% safe, and it’ll charge very fast at around 39 watts. This is over double what the factory iPad Pro charger can do. And it is perfectly fine.

    It’ll feel a little warmer than usual, but don’t be alarmed. This is only because it is fast charging vs. the factory 18 watt slow charge.

    I’ve been using a Nintendo Switch charger for around 2 months. With absolutely no issues at all. And it is 38 watts I think.

    Just because your MBP charge is 61 watts, doesn’t mean an iPad Pro 2018 will use anywhere near this amount. There are limitations built inside of the iPad.
     
  3. Shanghaichica macrumors G4

    Shanghaichica

    Joined:
    Apr 8, 2013
    Location:
    UK
    #3
    I use my 61 W charger with my ipad pro 10.5. It's been completely safe. I use it to fast charge my XS max and I used it with my X before too.
     
  4. kp98077 thread starter macrumors 6502

    kp98077

    Joined:
    Oct 26, 2010
    #4
    thanks, I assume you use an adapter to your XS and max?
     
  5. Shanghaichica macrumors G4

    Shanghaichica

    Joined:
    Apr 8, 2013
    Location:
    UK
    #5
    I have a USB C to lightning cable which is plugged into the 61 W adapter and that's how I charge my XS max and ipad pro. It's the official apple USB C to lightning cable and Apple 61 W adapter.
     
  6. AutomaticApple macrumors 65816

    AutomaticApple

    Joined:
    Nov 28, 2018
    Location:
    Massachusetts
    #6
    It’s safe. Use it!
     
  7. FrancoisC macrumors 6502a

    FrancoisC

    Joined:
    Jan 27, 2009
    Location:
    Montreal, Qc
    #7
    Amps are pulled, not pushed. You could charge with a 1000 amps charger and there would be no danger.
     
  8. littlerock72202 macrumors newbie

    Joined:
    May 5, 2019
    #8
    USB-C is great.
    I use my Macbook pro charger for macbook, ipad, nintendo switch, samsung
     
  9. masotime macrumors 68020

    masotime

    Joined:
    Jun 24, 2012
    Location:
    San Jose, CA
    #9
    It's safe. Both the MacBook Pro and the iPad Pro (2018) use a protocol known as USB-C Power Delivery. This means there's circuitry that tries to "negotiate" a power profile when you connect the power cable.

    This is off the top of my head, but I'm fairly certain the 61W Charger supports the 9V and 20V profiles (the newer ones may support 15V?), and the iPad Pro supports the 9V, 15V and 20V profiles. There'll be a brief period where both the charger and the iPad Pro will negotiate the power and it will probably settle at 20V and slightly above 1.5A - if the iPad Pro is sufficiently drained of power (e.g < 50%).

    As the iPad Pro charges to a higher percentage, the current (and thus the power) goes below 1A to protect the battery - I believe somewhere above 90% or 95% (?) the profile switches to 5V and you get a trickle of power to top off the battery.
    --- Post Merged, May 8, 2019 ---
    This is somewhat out of date but the behavior described by the chart is similar to what I talked about above: https://forums.macrumors.com/threads/29w-fast-charging-tests-and-3rd-party-adapters.2052414/
     
  10. tarsins macrumors 6502a

    tarsins

    Joined:
    Sep 15, 2009
    Location:
    Wales
    #10
    I use my 87w MBP power adaptor to charge everything.
     

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9 May 6, 2019