Start with the simplest checks first

A Mac that won't charge usually has a fixable problem, and the answer is almost always one of three things: the cable is damaged, the power adapter isn't making proper contact, or the charging port has debris in it. Before you assume the battery or logic board is failing, spend five minutes on these checks — they solve the problem in most cases.

Unplug everything. Look at the charging cable where it connects to the power brick and where it connects to your Mac. Bend the cable gently near both ends while watching for any visible cracks, fraying, or exposed wires. If you see damage, the cable needs to be replaced — a damaged cable can stop charging and create a safety risk. Even if the cable looks fine, try a different one if you have access to it. A cable can fail internally without showing visible damage.

Check the port on your Mac itself. Use a flashlight and look into the charging port — the small rectangular opening where the cable connects. If you see lint, dust, or debris, use a wooden toothpick or a soft plastic tool to gently remove it. Do not use metal objects, which can damage the port. Blow compressed air into the port if you have it, but do not use your mouth, which introduces moisture.

Key Takeaways

  • A damaged charging cable is the most common reason a Mac stops charging, and you can spot it by looking for cracks or fraying near the connectors.
  • Debris inside the charging port blocks the connection, and you can remove it with a wooden toothpick and a flashlight.
  • The power adapter itself can fail, and you can test it by trying a different cable or borrowing an adapter from another Mac model.
  • If your Mac charges only at certain angles or only when the cable is held in place, the charging port is likely damaged and needs professional service.
  • Resetting the System Management Controller (SMC) fixes charging problems that software is causing, and the steps differ between Intel and Apple Silicon Macs.

Test the power adapter and cable separately

The power adapter — the brick that plugs into the wall — can fail without any visible sign. If you have access to another Mac charger that matches your model, borrow it and try charging your Mac. If your Mac charges with the different adapter, your original adapter is the problem and needs to be replaced.

If you do not have another adapter to test, try this: plug your adapter into the wall and listen for a faint hum or feel for warmth near the brick after a minute. A working adapter produces a small amount of heat. If the brick is completely cold and silent, it may not be receiving power — check that the wall outlet works by plugging in a lamp or phone charger. If other devices charge in that outlet, the problem is the adapter itself.

For MacBook models with MagSafe charging (introduced in 2021), the magnetic connector can also be the issue. The metal puck on the end of the cable should snap firmly to the port on your Mac. If it barely sticks or falls off easily, the magnet may be weakened or the port magnet may be failing. Try cleaning both the puck and the port area with a dry cloth to remove any dust that interferes with the magnetic connection.

Restart your Mac and reset the System Management Controller

Sometimes the software that manages charging stops working correctly, and restarting your Mac fixes it. Shut down your Mac completely, wait 30 seconds, and turn it back on. If charging still does not work, the next step is to reset the System Management Controller — the chip that controls power, charging, and thermal management.

The steps differ depending on whether your Mac has an Intel processor or an Apple Silicon processor (M1, M2, M3, or later). To find out which you have, click the Apple menu in the top left corner, select "About This Mac," and look at the "Chip" line. If it says "Intel," follow the Intel steps. If it says "Apple," follow the Apple Silicon steps.

For Intel Macs: Shut down your Mac. Press and hold the left Shift key, the left Control key, and the left Option key all at the same time, then press and hold the power button. Hold all four keys for 10 seconds, then release them. Wait a few seconds, then press the power button again to turn your Mac back on.

For Apple Silicon Macs: Shut down your Mac. Press and hold the power button for 10 seconds, then release it. Wait a few seconds, then press the power button again to turn your Mac back on. That is the entire reset — Apple Silicon Macs reset the SMC automatically during this process.

Check the battery health and charging settings

Your Mac has a built-in tool that shows whether the battery itself is working. Click the battery icon in the top right corner of your screen and look at the text below the battery percentage. It should say "Battery is charging" or "Battery is not charging." If it says "Service Recommended" or "Replace Now," the battery has failed and needs professional replacement.

If the status says "Not Charging" but your Mac is plugged in, check your power settings. Click the Apple menu, go to "System Settings" (or "System Preferences" on older Macs), and find "Battery" or "Energy Saver." Look for any settings that might be preventing charging — some Macs have an option to limit charging to extend battery lifespan, and this can be mistaken for a charging failure. If you see an option like "Optimized Battery Charging" or "Charge Limit," turn it off temporarily to see if charging resumes.

Leave your Mac plugged in for at least 30 minutes after making these changes. Sometimes the charging system takes time to recognize that power is available, especially if the battery has been completely drained.

Identify signs that the charging port is damaged

If your Mac charges only when you hold the cable at a specific angle, or if it charges intermittently and stops when you move it, the charging port itself is likely damaged. This is different from a loose cable — the port connection is physically worn or bent.

Damaged ports cannot be repaired at home and require professional service. Contact Apple Support or visit an Apple Store with your Mac. They can diagnose the port and replace it if necessary. In the meantime, if your Mac is holding a charge, you can continue using it unplugged, but do not rely on the charger working consistently.

If your Mac is not holding a charge and the port is damaged, you have a limited window to back up your data before the battery drains completely. Connect to a power source one more time if possible, open System Preferences, and use Time Machine or iCloud to back up your files. Once the battery is fully drained, you will not be able to turn on your Mac until the port is repaired.

What to do if nothing works

If you have checked the cable, tested a different adapter, cleaned the port, restarted your Mac, and reset the SMC, and your Mac still will not charge, the problem is likely inside the Mac itself — either the battery, the charging circuit, or the logic board. These are not problems you can fix at home.

Contact Apple Support online or make an appointment at an Apple Store. Bring your Mac and your original power adapter. Tell them what you have already tried — this saves time and helps them diagnose faster. If your Mac is out of warranty, ask about repair costs before they proceed. Battery replacement is usually less expensive than logic board repair, and they can tell you which one is failing once they run their diagnostics.

If you do not have access to an Apple Store, search for "Apple Authorized Service Provider" in your area. These third-party shops can perform many repairs and often have shorter wait times than Apple Stores.

Frequently Asked Questions

Why does my Mac charge when the cable is bent but not when it is straight?

This means the charging port is damaged or the cable connector is worn. A bent cable temporarily makes contact inside the port, but the connection is not stable. Stop bending the cable — this can cause a fire. The port needs professional replacement.

Can I use a third-party charger instead of the Apple one?

Third-party chargers that match your Mac's wattage and connector type usually work, but they may charge more slowly or less reliably. Use only chargers from reputable manufacturers that list your Mac model as compatible. Cheap knockoff chargers can damage your battery or create a safety hazard.

My Mac is plugged in but the battery percentage is not going up. What does that mean?

It means power is reaching your Mac but the charging system is not working. This could be a software issue (try restarting and resetting the SMC), a damaged cable or adapter, or a failed battery. If the battery percentage stays the same for an hour after you restart, the problem is likely hardware and needs professional diagnosis.

Is it bad to leave my Mac plugged in all the time?

Modern Macs are designed to stay plugged in. They stop charging once the battery reaches 100 percent and do not overcharge. However, if your Mac is plugged in but not charging, leaving it that way will not damage anything — it just means the battery is not getting power.

How long should it take for my Mac to charge from zero to 100 percent?

Most Macs take two to four hours to fully charge, depending on the model and whether you are using the Mac while it charges. Charging is slower when your Mac is in use. If charging takes longer than six hours, the adapter may be underpowered or the battery may be failing.