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.

  • The recommended charger is the one that originally came with the machine.
    – lhf
    Feb 20 at 20:18
  • 1
    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
    Feb 20 at 23:28
  • 1
    1 and 2 are basically the same question. 3 should be a separate question, with a picture.
    – JBallin
    Feb 20 at 23:41
  • 1
    @JBallin apple.stackexchange.com/questions/437293/… moved the 3rd question here
    – Esqarrouth
    Feb 21 at 3:54
  • 1
    @SolomonUcko: was that a genuine adapter? For years my MBP was running on a 45W charger.
    – kiler129
    Feb 21 at 6:15

1 Answer 1


It is safe to charge your M1 with the 96W USB-C charger. Downsides are slower overall charging and no “fast” charging.


  1. Apple: About Mac power adapters
  2. Apple: Fast charge your 14-inch or 16-inch MacBook Pro

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