MacBook Won't Charge: Common Causes

A MacBook that won't charge is usually the power source, the cable, the adapter, the port, or the battery; the logic board is a rarer sixth. The first four cost nothing to rule out.

Stop and read this first. If the case is bulging, the trackpad has stopped clicking properly, or the lid no longer sits flat, the battery is swelling. Unplug it, shut it down, do not charge it, do not press on it, and bring it in.

If liquid has been anywhere near it — a spill, a bottle in a bag, sea spray — shut it down, do not plug it in, and skip to Liquid damage. Plugging in a wet machine turns a cleanable board into a dead one.

If it shows no signs of life — no screen, no light, no fan — start with the five-minute checks and skip anything needing a menu. Leave it on a known-good charger for 20 minutes before deciding it is dead, and hold the power button about 10 seconds to force a shutdown if the menu is unreachable.

The five-minute checks

Start with the outlet

Try a different wall socket directly — not a power board, not an extension lead — check the wall switch is on, and check nothing has tripped at the switchboard. Thirty seconds, and the most common non-fault is ruled out.

Then the cable and the adapter

USB-C cables are not interchangeable: many carry data but only a trickle of power, and cheap ones fail internally at the strain relief before they look damaged.

If you have a whole spare charger, try that first: if the Mac charges, the fault is your original charger; if not, it is the Mac, the port or the outlet. With spare parts, swap the cable alone, then the adapter, to see which half failed.

Wattage matters: a 30W phone charger in a 16-inch MacBook Pro is not a charger, just a slower rate of discharge. So does the cable. Any USB-C cable carrying more than 60W must contain an e-marker — a chip declaring it can handle 5A — which you cannot see by looking. A 5A cable tops out at 100W; above that, including the 140W a 16-inch MacBook Pro takes, you need one sold as USB-C 240W (EPR-rated), or Apple's MagSafe 3 cable. Otherwise use the cable that came with the machine; buy replacements from a reputable brand with the RCM mark.

Lint in the port

Pocket lint compacts into a hard disc at the bottom of a USB-C port, so the plug seats halfway and never makes contact — a loose-feeling connector is the sign. Shut the Mac down, shine a torch in, and pick the debris out with a wooden toothpick — never anything metal.

What the MagSafe LED tells you

• No light at all, with a charger you know works: power is not reaching the machine.
• Amber, but the battery does not climb: power is arriving, but something is stopping it reaching the cell. Rule out the innocent causes — an adapter too small for the load (AC Charger Information shows the wattage actually negotiated), a machine hot enough that macOS has paused charging, or a charge limit set in System Settings > Battery. Retest shut down on a known-good full-wattage adapter; if it still will not climb, the fault is downstream — the battery, or the logic board's charging circuitry.

The reset that actually applies to your Mac

Click the Apple menu > About This Mac. Chip: Apple M1 or later — M1, M2, M3, M4, M5, including Pro and Max variants — means Apple Silicon: essentially every MacBook since late 2020. Processor: Intel Core i5/i7/i9 means Intel; the window also gives the model year.

That matters, because the most repeated "fix" for charging faults — resetting the System Management Controller — does not exist on Apple Silicon Macs. There is no SMC.

Apple Silicon (M1 and later): shut down fully from the Apple menu — or hold the power button about 10 seconds if the menu is unreachable — wait 30 seconds, then power on. That is all Apple documents for Apple Silicon; there is no key combination to learn.

Intel: check for a T2 chip first — hold Option, click the Apple menu, choose System Information, then Controller (or iBridge) under Hardware. With an Apple T2 listed (roughly 2018-2020): shut down; hold left Control, left Option and right Shift seven seconds; add the power button for seven more; release and power on. Without one: shut down; hold left Shift, left Control, left Option and the power button about ten seconds; power on.

Read the data before you assume

Battery health: System Settings > Battery, then the info button beside Battery Health. (Big Sur to Monterey: System Preferences > Battery > Battery Health. Catalina and earlier: Option-click the battery icon for a one-line Condition only.)

For a charging fault, hold Option, click the Apple menu, choose System Information, then Power under Hardware.

• Cycle Count — Apple rates most modern MacBook batteries at 1000 cycles. One at 300 has plenty left; one at 950 does not.
• Maximum Capacity — a percentage under Health Information, the honest measure of how much the cell has lost. New reads 100%; below about 80% — Apple's own warranty threshold, not a cliff — you get noticeably less working time per charge. macOS no longer reports full-charge or design capacity in mAh here; for those, use coconutBattery or ioreg -l -w0 | grep -i capacity in Terminal.
• Condition — "Normal" means macOS is satisfied. "Service Recommended" (older wording: "Replace Soon", "Replace Now", "Service Battery") means the battery still works, but capacity has dropped further than expected for its age. Apple's position is that you can keep using the machine: a heads-up, not a failure verdict. Replace it when the shorter runtime bothers you, or when real symptoms appear: unexpected shutdowns, refusal to charge, swelling.
• AC Charger Information — whether an adapter is detected, and at what wattage. If a supposedly 96W charger reads 60W, suspect the cable before the brick: without a 5A e-marker the negotiation caps at 60W. Retry with a known-good cable; if it still reads low, or nothing, you have found your problem.

When it is actually hardware

Charging port or MagSafe board

Nothing detected, or charging that cuts in and out when you wiggle the connector: bent pins, a lifted port or a failed charge board. Turnaround depends on the model — about an hour once the part is in where the port sits on its own board (the 14 and 16-inch MacBook Pro, the MagSafe connector on M2 and later Airs), but days where the USB-C ports are soldered to the logic board, such as the M1 MacBook Air — that is micro-soldering. We will tell you which at assessment. Charging port repairs carry a 6-month warranty.

Battery failure

High cycle count, low maximum capacity, or sudden shutdowns at 30%. A bulging case or a trackpad that no longer clicks is swelling — see the warning at the top, and stop charging it. Replacement is quick when the cell is in stock; less common batteries are ordered in, 2-3 days. Battery replacement carries a 12-month warranty.

Logic board and charging circuit

When power reaches the port but never the battery, the fault is usually the charging IC — the small chip that manages power on the main board — or a component beside it. That is micro-soldering: allow 3-7 days, with a 3-month warranty.

Liquid damage

A spill, a bottle leaking in a bag, or salt air and sea spray — a real risk in a beach city. Salt water is far more aggressive than fresh water and keeps corroding long after the machine looks dry.

Shut it down, do not plug it in, and stop trying to charge it. Rice does nothing; it is not a drying method. Our process is assessment, ultrasonic cleaning and component-level repair, typically 3-7 days. Liquid damage carries no warranty: corrosion keeps spreading after cleaning.

Before you bring it in

Back up if the machine still turns on. If it does not, bring it in as it is — your data sits on the drive, untouched by a battery, port or board repair, and at assessment we can tell you whether it can be recovered. We never ask for or store your passcode. Diagnostics are free, the quote follows inspection, nothing is repaired without your approval, and warranties are in addition to your rights under Australian Consumer Law.

Still won't charge? Bring it to Phone Repair Wollongong, Unit 6/61 Market St — open seven days, free pickup and delivery in the Wollongong CBD. Book at phonerepairaustralia.com.au/book, pricing on our pricing page, or call 0466 446 461, and track your repair at Track My Repair with the job number from your receipt.