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

kp98077

kp98077

macrumors 601
Original poster
Oct 26, 2010
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Whistler, BC
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-
 
kp98077 said:
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-
Click to expand...

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.
 
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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.
 
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kp98077 said:
thanks, I assume you use an adapter to your XS and max?
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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.
 
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kp98077 said:
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-
Click to expand...
It’s safe. Use it!
 
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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.
[doublepost=1557367116][/doublepost]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/
 
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