Compatibility - Charger provided with the MacBook Pro 13" M3 chip

The thing is, important_thoughts, that a «9V-3A» specification will provide the necessary result, since the 3A is purely the limit: if the system receiving the power does not draw the entire 3A, that works just fine!

The 3A is purely a set limit. A current limit, for safety purposes.

Hence, it fulfills the «9V/2.56A and higher» part of the specification.

(This is part of why I decried the non-standard way the specification was written.)

important_thoughts:

In order for USB (C or otherwise) to go beyond 15W, it must use the USB Power Delivery (PD) specification of USB-C.

So, the only way the 61W USB-C Power Adapter could deliver 61W is to either use the USB PD specification of USB-C, or to do something non-standard.

It doesn’t make any sense for Apple to have done anything non-standard, since this specification has been around as long as there has been USB-C.

The only real problems, important_thoughts, are:

1. Your apparent lack of understanding of electrical systems, particularly power systems.
2. The poor writing of that AppleInsider piece you linked to. (This may or may not reflect the author’s own poor understanding of electrical systems, particularly power systems.)

Given these, it is understandable why you have the “unanswered” questions you have expressed, and, hence, why it would help you if Apple provided the information you feel is lacking.

Hence, to the extent you do not wish to trust me (why should you?), I recommend you pose your query directly to Apple Support (the Contact Support link in the upper right of this page).

After all, we are all but fellow users, like yourself, here.

We don’t have any special knowledge of questions pertaining to Apple internal affairs.

Really, important_thoughts, why are you persisting, here, rather than going directly to Apple?

If you cannot trust me—and there is simply no reason why you necessarily should!—then your best recourse is to contact Apple Support directly.

The newest iPhone has the charger with new name, MagSafe.

This is not anything like prior MacBook-series 'magsafe' devices.

In name-only the latest charger is introduced, and does not work

the same; nor with any portable Mac computers. ..USB-C replaced

MagSafe-corded power adapters for portable Macs.. ~ If there may

be a re-introduction of classic "MagSafe" mac, it's unannounced.

Take care & good luck!🌻

Yes, K Shaffer.

I’m reasonably certain that important_thoughts was not using the term “MagSafe” in that old meaning.

(My Mid 2010 BackBook uses that old ‘magsafe’ connector. I don’t expect Apple to ever reintroduce that old connector, or most anything like it.)

important_thoughts:

Here’s a graph of how the USB Power Delivery (PD) specification of USB-C handles various power requirements:

(Obtained from USB Power Delivery explained.)

Unfortunately, the various horizontal line segments should not be in the graph: they make absolutely no sense.

So, in order to attain 61W (or even 60W, say, with a 1W internal loss), the adapter must be able to supply 5, 9, 15, and 20 volt (V) power options.

If you truly understood electrical systems, particularly power systems, important_thoughts, this would have been a non-issue early on, in our discussion.

I have absolutely no intention of giving you any offense.

Unfortunately, I have no control over your reactions.

Well, maybe not «absolutely no sense» (emphasis added), but they are not being true to what is actually going on, since the diagonal lines, alone, match the power rating.

Welcome, important_thoughts, to Apple Support Communities!

As an aside, it’s the M1 chip or processor (actually, a System on a Chip [SoC]).

The included power adapter is:

• 61W USB-C Power Adapter

This is more than adequate for the MagSafe Charging pad, as well as Fast Charging an iPhone 12 (any ilk).

The requirement for Fast Charging of an iPhone 12 (any ilk) simply requires a 20W Power Adapter, or greater, as per Apple’s specifications.

Additionally, the MagSafe Charger cannot provide the Fast Charging that Apple talks about, for the iPhone 12 (any ilk). You must use a cable to the iPhone 12 to attain Fast Charging.

Where did you get your claimed «”9V/2.22A or 9V/2.56A and higher"» specifications?

Thank you for providing the reference, important_thoughts.

The real question is whether the 61W USB-C Power Adapter is a «USB PD-compatible power adapter.»

If not, it may not be able to supply the higher line voltage (9V, rather than the standard 5V).

(Incidentally, the way that linked document expresses the power requirements is far from standard. That’s my primary reason for questioning it.)

I know that the USB-C specification permits up to 100W power, but I hadn’t noticed that there was any specification of voltages greater than 5V.

I’ll look further into “USB PD-compatible power adapters”. Actually using the USB Power Delivery (PD) specification of USB-C.