Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

Sheepish-Lord

macrumors 68030
Oct 13, 2021
2,530
5,148
Can the USB-C 96W charger designed for the 14" MBP also be used with the new 16" MBP? The product page does not list it on the compatibility list, which I thought was strange. https://www.apple.com/shop/product/MX0J2AM/A/96w-usb-c-power-adapter

Thanks
Yes but depending on what you’re doing smaller chargers may not be able to keep a full charge even when plugged in. Additionally, if you’re continuously pushing the charges internals it could overheat or have reduced life expectancy.
 
  • Like
Reactions: kat.hayes

kat.hayes

macrumors 65816
Original poster
Oct 10, 2011
1,447
52
Yes but depending on what you’re doing smaller chargers may not be able to keep a full charge even when plugged in. Additionally, if you’re continuously pushing the charges internals it could overheat or have reduced life expectancy.
wouldn't it be the other way around, using a larger capacity charger like the one for the 16 with the 14 that could potentially cause issues with reduced life expectancy?
 

bniu

macrumors 65816
Mar 21, 2010
1,125
306
I’ve used a 20-30W adapter to charge my intel 16” MBP as well, usually for overnight charging, I might do that knowing that it’ll be at least 8-10 hours before I use it again. In these cases, I really don’t care if it takes 1 hour or 9 hours to fully charge, I’ll have a full charge or a reasonably usable charge next time I’m ready.
 
  • Like
Reactions: kat.hayes

Chancha

macrumors 68020
Mar 19, 2014
2,332
2,154
Yes it can be used, it will use a profile roughly about 20V 5A.

If you use the MagSafe cable with any brick that isn't the Apple 140W you won't get fast charge (USB PD 3.0, 28V 5A).

But why are you doing this anyway? If you are shelling out for a 2nd charger I would look at the 3rd party GaN ones, the 100W ones are usually much lighter than Apple's 96W and they usually come with a few extra ports.
 

kat.hayes

macrumors 65816
Original poster
Oct 10, 2011
1,447
52
Yes it can be used, it will use a profile roughly about 20V 5A.

If you use the MagSafe cable with any brick that isn't the Apple 140W you won't get fast charge (USB PD 3.0, 28V 5A).

But why are you doing this anyway? If you are shelling out for a 2nd charger I would look at the 3rd party GaN ones, the 100W ones are usually much lighter than Apple's 96W and they usually come with a few extra ports.
I am asking because I also have access to the 96W chargers through my work.

Does MagSafe charge quickly with a 14 inch and the 96W?

Thanks
 
  • Like
Reactions: rmadsen3

jav6454

macrumors Core
Nov 14, 2007
22,303
6,264
1 Geostationary Tower Plaza

Chancha

macrumors 68020
Mar 19, 2014
2,332
2,154
I am asking because I also have access to the 96W chargers through my work.

Does MagSafe charge quickly with a 14 inch and the 96W?

Thanks
I see. In our studio we also throw around 96W brick from the Intel 16", but not binding it to the machines. They are used by M1 14" & 16" users.

For the 14", it will fast charge as long as the brick is rated near 100W, regardless if MagSafe or type-C (20V 5A will engage fast charge on 14").

The reason fast charge on the 16" is exclusive to the MagSafe port is that with the TB4 / USB 3.2 type-C standard, the Power Delivery version is only 2.0 and is mandated to not exceed 100W maximum. On the 16" this upper limit is only lifted on the MagSafe port. If you connect the Apple 140W brick to the 16" via C to C cable instead, it will cap at 100W.
 

pshufd

macrumors G4
Oct 24, 2013
10,153
14,577
New Hampshire
I've used an Anker 40 watt two USB-C port charger to charge it before. It's a very small charging brick that I got for my iPhone and iPad but I could also charge my MacBook Pro 16 using it if I really didn't want to bring the big brick.
 
  • Like
Reactions: kat.hayes

chengengaun

macrumors 6502
Feb 7, 2012
371
854
I used my iPhone 20 watt charger on my 16" without problems.
Conversely, I have charged my iPhone with the 96W charger without problems. (I did what you did regularly, too, which I posted elsewhere.)

There is no risk in my experience - I use a 30W MacBook Air charger for my 14" M1 Max, most of the time running the Mac while charging. Even while under considerable CPU load, max memory usage (64GB) and driving an external monitor the Mac still charges slowly. The battery health is still excellent after 21 cycles and 3 months of use - hard to put complete cycles with this sort of battery life.

View attachment 1950987
 
  • Like
Reactions: kat.hayes
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.