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I got a 16" 2019 MBP and 16" 2021 M1.

  • MBP came with 96W charger with usb-c=>usb-c
  • M1 came with 140W charger with usb-c=>magsafe
  1. Is it safe and recommended to charge my M1 with the 96W charger?
  2. Is it safe and recommended to charge my M1 with usb-c charger?

I'm mostly thinking of the battery and computer health when asking about safety and recommendation.

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  • The recommended charger is the one that originally came with the machine.
    – lhf
    Commented Feb 20, 2022 at 20:18
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    You can look up how much power each mac can pull. If the wattage of the charger is below that, it will charge slower - if equal or above, it will charge at max speed. Apple chargers are able to detect and supply appropriate charge automatically, no need to be concerned about damage. I think the “yellow” charger question is a separate issue (1 question at a time). support.apple.com/en-us/HT201700
    – JBallin
    Commented Feb 20, 2022 at 23:28
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    1 and 2 are basically the same question. 3 should be a separate question, with a picture.
    – JBallin
    Commented Feb 20, 2022 at 23:41
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    @JBallin apple.stackexchange.com/questions/437293/… moved the 3rd question here
    – Esqarrouth
    Commented Feb 21, 2022 at 3:54
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    @SolomonUcko: was that a genuine adapter? For years my MBP was running on a 45W charger.
    – kiler129
    Commented Feb 21, 2022 at 6:15

1 Answer 1

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It is safe to charge any Mac (including those with Apple Silicon) with the 96W (or lower/higher) USB-C charger.

Downsides:

  • Slower overall charging
  • No “fast” charging.

Apple: About Mac power adapters:

If your Mac uses USB-C to charge, you can charge your Mac notebook with any USB-C power adapter or display. For the best charging experience, you should use a power adapter or display that provides at least the minimum wattage of the power adapter included with your MacBook Air, MacBook Pro, or MacBook.

Apple: Fast charge your 14-inch or 16-inch MacBook Pro:

The MacBook Air (M2, 2022), MacBook Pro (14-inch, 2021), and MacBook Pro (16-inch, 2021) support fast charge. When you connect the appropriate power source and cable, you can quickly charge your battery up to 50 percent in 30 minutes.

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