Teardown of 140W MacBook Pro Power Adapter Shows What's Inside

The 140W power adapter that ships with the 16-inch MacBook Pro models is unique in multiple ways, with Apple introducing new technology in the charger. It is the first Apple power adapter using gallium nitride or "GaN" technology to cut down on size, and it is equipped with USB-C Power Delivery 3.1. ChargerLab today published a teardown of the 140W power adapter, giving those who are curious about what's inside a look under the hood.


The teardown video features general measurements and testing of the power adapter, but ChargerLab also completely disassembles the body to get to the internals. The analysis portion of the teardown is highly technical, but that bit, which starts at around 7:30 into the video, is worth watching for those who want to know about the specific chip setup Apple is using.

As mentioned up above, this is the first power adapter that Apple has introduced with USB-C Power Delivery 3.1, and it is also compatible with devices that support that charging specification. ‌MacBook Pro‌ models are also able to charge with USB Power Delivery 3.1 chargers from third-party brands.

The 140W power adapter ships with the 16-inch ‌MacBook Pro‌, and it is also available from Apple for $99.

Related Roundup: MacBook Pro
Buyer's Guide: MacBook Pro (Caution)
Related Forum: MacBook Pro

Popular Stories

Apple Logo Black

Apple Just Made Its Second-Biggest Acquisition Ever After Beats

Thursday January 29, 2026 10:07 am PST by
Apple today confirmed to Reuters that it has acquired Q.ai, an Israeli startup that is working on artificial intelligence technology for audio. Apple paid close to $2 billion for Q.ai, according to sources cited by the Financial Times. That would make this Apple's second-biggest acquisition ever, after it paid $3 billion for the popular headphone and audio brand Beats in 2014. Q.ai has...
Aston Martin CarPlay Ultra Screen

Apple's CarPlay Ultra to Expand to These Vehicle Brands Later This Year

Sunday February 1, 2026 10:08 am PST by
Last year, Apple launched CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles. Nearly nine months later, CarPlay Ultra is still limited to Aston Martin's latest luxury vehicles, but that should change fairly soon. In May 2025, Apple said many other vehicle brands planned to offer CarPlay Ultra, including Hyundai, Kia, and Genesis. In his Powe...
14 inch MacBook Pro Keyboard

Apple Changes How You Order a Mac

Saturday January 31, 2026 10:51 am PST by
Apple recently updated its online store with a new ordering process for Macs, including the MacBook Air, MacBook Pro, iMac, Mac mini, Mac Studio, and Mac Pro. There used to be a handful of standard configurations available for each Mac, but now you must configure a Mac entirely from scratch on a feature-by-feature basis. In other words, ordering a new Mac now works much like ordering an...
Apple Logo Black

Apple's Next Launch is 'Imminent'

Sunday February 1, 2026 12:31 pm PST by
The calendar has turned to February, and a new report indicates that Apple's next product launch is "imminent," in the form of new MacBook Pro models. "All signs point to an imminent launch of next-generation MacBook Pros that retain the current form factor but deliver faster chips," Bloomberg's Mark Gurman said on Sunday. "I'm told the new models — code-named J714 and J716 — are slated...
Apple MacBook Pro M4 hero

New MacBook Pros Reportedly Launching Alongside macOS 26.3

Sunday February 1, 2026 5:42 am PST by
Apple is planning to launch new MacBook Pro models with M5 Pro and M5 Max chips alongside macOS 26.3, according to Bloomberg's Mark Gurman. "Apple's faster MacBook Pros are planned for the macOS 26.3 release cycle," wrote Gurman, in his Power On newsletter today. "I'm told the new models — code-named J714 and J716 — are slated for the macOS 26.3 software cycle, which runs from...

Top Rated Comments

BuffyzDead Avatar
56 months ago
The Moral of this entry, Is:

Beware Of Chinese Knockoffs, OR Suffer, at your own doing
Score: 14 Votes (Like | Disagree)
TheYayAreaLiving ?️ Avatar
56 months ago
Dang! They ripped that thing apart. Highly advanced technology in that little adapter.

However, the adapter does get heated while charging your ?
Score: 9 Votes (Like | Disagree)
ToomeyND Avatar
56 months ago
Title writer took a day off. :)
Score: 8 Votes (Like | Disagree)
Reelmower Avatar
56 months ago
Kudos for proper use of unique. Most would have written “very unique” (incorrect), instead of “unique in many ways” (correct).
Score: 7 Votes (Like | Disagree)
jaytv111 Avatar
56 months ago

Does anyone know if the new MBP 16" Fast-charge capable with included 140W USB-C Power Adapter will 'fast charge' when coupled with Apple's power adapter extension, or will it revert to normal charging speed?

I still want to benefit from the 0 to 50 percent charge in around 30 minutes, but also want the added length of the 1.8-meter Power Adapter Extension Cable ('https://www.apple.com/shop/product/MK122LL/A/power-adapter-extension-cable?fnode=e4e0c67a842678974cd97ceb487b69d129d852354b10a4e7556577b2a319b6a99e611cd15fb812e10892cbb1189ed02bd0956869b824bbd97b9e59c7c03792d00d16bf493215752cba1bc27f25ade51b8a07d1068dd35b4d065ddd3c3e024a81').

Although Apple's site description says "Use it with MagSafe and MagSafe 2 power adapters, 10W and 12W USB-A power adapters and 29W, 30W, 61W, 67W, 87W, 96W, and 140W USB-C power adapters. ('https://www.apple.com/shop/product/MK122LL/A/power-adapter-extension-cable?fnode=47c196e1e77061c642eb8ac9977381fcb6d91b5f9152683b823d557991349d7123094ecfb29879eea8be901f2aaa02324b8cc7e2896380606f3dbbbb937a21bc913f8f89700eccfa6b090e87e38795c865ec34aacccb4f3d2632d107d556c38dfa2d9f7e9ad22ad4863f04b5fe4e8103')" The one that Apple just shipped me with my new MBP 16" 2021 box says... MagSafe 2 up to 87W. See Screenshot attached.

So...
[LIST=1]
* Did Apple send me the wrong power extension cable, is there another one compatible with MBP 16" 2021?
* Does the power extension cable work with MagSafe 3 / Fast-Charge and Apple just hasn't updating their specs on the actual box yet?

Thanks for help!


They don't have to change anything on the extension, it's the same extension. Since it's on the AC side of things, it actually doesn't change anything on the DC side (the actual cable you use to charge the device), it just has to be reasonably thick to handle the current (which it definitely is and the increased power barely makes a dent in that thick a cable on the AC side).

The magic of AC power is that the cables can be super long and handle a lot of power, but the disadvantage is that all AC needs to be converted to DC for electronics to work.
Score: 6 Votes (Like | Disagree)
Mick-Mac Avatar
56 months ago
That restriction is on lithium ion batteries (100VA) - the thing that contains the energy (and can blow up). A battery charger isn't the same thing as a battery.
Score: 6 Votes (Like | Disagree)