If a MacBook Pro will not charge, follow Apple's MagSafe and USB-C articles: test the outlet with a lamp, try the adapter's other cable, confirm the adapter meets the wattage the Pro needs, unplug the adapter for 30 to 60 seconds to clear a line-noise shutoff, restart, then shut down and close the lid for 30 seconds before charging again. The Pro is the Mac where wattage matters most: Apple's specs list 70W or 96W adapters for the 14-inch and a 140W adapter for the 16-inch, and fast charging works only with the included 140W adapter. The Mac charges over one port at a time, MagSafe 3 or any Thunderbolt port, using the source with the most power.
Differential
Likely causes of “Apple MacBook Pro 14-inch and 16-inch (M3 and M4) will not charge”, and how to tell them apart
- 1
An adapter with too little wattage
What separates it The Pro charges slowly or loses charge under load
How to confirm Apple says the adapter should suit the Mac; the 14-inch lists 70W or 96W and the 16-inch 140W
- 2
A dead outlet or line noise
What separates it The adapter has no light or shuts off intermittently
How to confirm Apple says to test the outlet with a lamp and unplug the adapter for 30 to 60 seconds
- 3
A cable that carries data only
What separates it The Pro will not charge from a USB-C cable that worked for a phone
How to confirm Apple says some USB-C cables carry data only and will not charge a Mac
- 4
Optimized Battery Charging or heat
What separates it The battery menu shows Charging On Hold because of Optimized Battery Charging or heat
How to confirm Apple says this is deliberate; choose Charge to Full Now
- 5
A worn battery or damaged port
What separates it The Pro charges then plunges, or only charges when the cable moves
How to confirm Read Battery Health and inspect the ports; Apple says to have a damaged cable evaluated
Before you touch a setting
Record this first — changing settings destroys the evidence
- Which MacBook Pro you have and the wattage printed on your adapter
- Whether you charge by MagSafe 3 or a Thunderbolt port and what the indicator light shows
- What the battery menu says (Charging, Charging On Hold, Not Charging)
- Whether the fault follows the cable, the adapter or the Mac
Try in this order
0 of 7 completedTest the outlet
ReversibleTest the outlet, by plugging a lamp into the same outlet and checking that it works.
Reset the adapter
ReversibleUnplug it for 30 to 60 seconds, then plug it back in; Apple says this clears a line-noise shutoff.
Swap cable and port
ReversibleTry the MagSafe 3 cable and a USB-C cable that supports charging, and each Thunderbolt port.
Restart
ReversibleRestart, by choosing Restart from the Apple menu, and then trying the charger again, and then test again to see whether it helped.
Shut down and close the lid
ReversibleApple says to shut down, close the lid for 30 seconds, open it and charge again.
Check the wattage
ReversibleCheck the wattage, by reading the adapter's rating against your model, since a low wattage adapter charges slowly or unreliably.
Read Battery Health
ReversibleRead Battery Health, and if it charges but empties fast, follow the battery page for the next steps.
Model-specific
What is true of this model and not of its siblings
- Charging by model
- MagSafe 3 plus three Thunderbolt ports. 14-inch: 70W or 96W adapter. 16-inch: 140W adapter, fast-charge capable. Per Apple's tech specs.
- Which port charges
- One at a time, using the source with the most power; Apple says connecting more than one does not charge faster.
- Part numbers
- No part number is involved for the Mac. Apple's adapters are identified by wattage, printed on the adapter.
- Repair cost
- iFixit's table lists Apple's US estimate for a MacBook Pro battery replacement at $249; Apple quotes port repairs after diagnosis.
- Other models this page answers
- These steps also fit the MacBook Pro 16-inch (M4 family), MacBook Pro 14-inch (M3 family).
Stop boundary
When this stops being a self-service repair
- !If the Pro charges on another adapter and cable, replace the failed accessory rather than the Mac
- !If it will not charge on a known-good adapter and cable after a restart, contact Apple
- !If a port is loose, corroded or the cable overheats, stop using it and take it to Apple
Evidence ledger
Sources behind this answer
MagSafe 3 identification, outlet check, wattage, 60-second rest and line noise.
Restart, outlet, closed-lid step, cable test and line noise.
MagSafe 3 and USB-C charging, one port at a time, fast charging and the amber and green light.
Performance level, updates, battery health features and hardware checks.
72.4-watt-hour battery, three Thunderbolt 4 ports, 24 hours video, Center Stage camera and display support.
100-watt-hour battery, 140W adapter, Thunderbolt 5, HDMI, SDXC and ProMotion.
Table of Apple's out-of-warranty battery cost for MacBook Pro and MacBook Air models, from Apple's shared estimates as of February 2025.
Exact questions
Common questions
What if the MagSafe light stays green but the battery is low?+
Green means Apple's indicator sees a full charge. If the menu shows a low percentage, quit heavy apps and check the battery menu text; a fault in the cable or Battery Health page is the next check.
Which adapters does the Pro use?+
Apple's specs list 70W or 96W USB-C adapters for the 14-inch models and a 140W adapter for the 16-inch models, with fast charge on the included 140W adapter.
Does the Pro charge over Thunderbolt?+
Yes. Apple says any USB-C port can be used, or MagSafe 3; the Mac charges over one port at a time using the source with the most power.
Can a monitor charge the Pro?+
Apple says a connected USB-C or Thunderbolt display can provide power if it supplies enough wattage; a low-wattage display may not keep a Pro charged under load.
Why did charging stop at 80 percent?+
Optimized Battery Charging can hold charge past 80 percent. Choose Charge to Full Now or change Battery Health settings.
Why does the Pro discharge while plugged in?+
A heavy load can use more power than a low-wattage adapter supplies. Apple's battery article lists a very high performance level as a cause; use the rated adapter.