What you need to charge a MacBook Pro

Your MacBook Pro charges through a USB-C port using the power adapter that came in the box. The cable and adapter are one piece — you plug the cable directly into the power brick, then plug that brick into the wall. Depending on your MacBook Pro model and year, you may have one, two, or four USB-C ports on the sides of the machine, and any of them will charge the battery.

The wattage of your adapter matters. Newer MacBook Pro models come with either a 67-watt, 96-watt, or 140-watt adapter depending on the screen size and processor. A 13-inch MacBook Pro typically ships with 67 watts, while 14-inch and 16-inch models come with higher wattages. You can charge with a lower-wattage adapter — it will just charge more slowly — but using a significantly higher wattage adapter will not damage the battery.

If you have lost or damaged your original adapter, you can buy a replacement USB-C power adapter from Apple or from third-party manufacturers. Make sure any third-party adapter is certified for your specific MacBook Pro model, as wattage requirements vary.

Key Takeaways

  • MacBook Pro charges through any of its USB-C ports using the power adapter that came with it or a compatible replacement.
  • The adapter wattage depends on your model — check your original box or System Settings to find the correct wattage for your machine.
  • You can charge from any USB-C port simultaneously, so you can use multiple ports if you have multiple adapters.
  • A lower-wattage adapter will charge your MacBook Pro, just more slowly than the original.
  • Battery health degrades slightly over time with normal use, but macOS shows you the current condition in System Settings.

Finding your USB-C ports and plugging in

Look at the sides of your MacBook Pro. The USB-C ports are small, oval-shaped openings. On newer models (2021 and later), you will see them on both the left and right sides. On older models, the ports may be only on one side or grouped together.

Take the power adapter and cable. The cable end is flat and rectangular — this is the USB-C connector. Line it up with any USB-C port and push it in firmly until you hear or feel a click. The connection should be snug. The other end of the cable plugs into the power brick, and the power brick plugs into a wall outlet.

When charging begins, you will see a small light on the power adapter cable near the connector — this light turns amber while charging and green when the battery is full. You can also check the battery status by clicking the battery icon in the top-right corner of your screen.

Checking which adapter wattage your MacBook Pro needs

If you are buying a replacement adapter and are not sure which wattage to get, you can find this information in your Mac's settings. Click the Apple menu in the top-left corner, then select System Settings. Go to General, then click About. Look for a section called System Report and click that button.

In the System Report window, click Power on the left side. You will see a line that says AC Charger Information or Charging. This shows the wattage of the adapter that shipped with your machine. Write this number down before you shop for a replacement.

Alternatively, look at the original power adapter itself. The wattage is printed on the brick in small text — you are looking for a number followed by "W" (for watts). Common wattages are 67W, 96W, and 140W.

Charging speed and what affects it

Your MacBook Pro will charge fastest when you use the original adapter that came with it. If you use a lower-wattage adapter, charging will be slower but will still work. For example, a 13-inch MacBook Pro with a 67-watt adapter might take 2 to 3 hours to charge from empty to full, while the same machine charged with a 30-watt adapter might take 5 to 6 hours.

Charging is also slower if you are actively using your MacBook Pro while it charges. Running demanding programs like video editing software or games generates heat and uses power, which slows the charging process. If you want the fastest charge, close unnecessary programs and let the machine sit idle.

The battery will also charge more slowly if the machine is very hot or very cold. If your MacBook Pro feels warm to the touch, let it cool down before plugging it in. Extreme cold (below 50 degrees Fahrenheit) can also slow charging temporarily.

Understanding battery health over time

MacBook Pro batteries are designed to hold about 80 percent of their original capacity after 1,000 complete charge cycles. A charge cycle means using all the battery power and then charging it back to full. In real life, this usually takes one to two years of normal use, depending on how often you charge.

You can check your battery's current health in System Settings. Go to System Settings > General > About > System Report, then click Power. Look for Condition — it should say Normal. If it says anything else, like Replace Soon or Service Recommended, your battery is degrading faster than expected and you may want to have it checked by Apple.

Battery degradation is normal and does not mean something is wrong. Even at 80 percent capacity, your MacBook Pro will run for a full workday on a single charge. If you want to extend battery life, you can enable Low Power Mode in System Settings under General > Battery. This reduces performance slightly but uses less power.

Troubleshooting when your MacBook Pro will not charge

If you plug in your MacBook Pro and nothing happens, first check that the power brick is plugged into the wall and that the outlet itself works. Plug a lamp or phone charger into the same outlet to confirm it has power. If the outlet is dead, try a different one.

Next, inspect the USB-C cable and connector for damage. Look for bent pins, cracks, or debris inside the port. If you see dirt or lint, use a small flashlight to look inside the port on your MacBook Pro and gently clean it with a dry cotton swab. Do not use liquid or force.

Try a different USB-C port on your MacBook Pro if you have one. Unplug the cable, wait 30 seconds, and plug it into a different port. Sometimes a single port can fail while others work fine.

If none of these steps work, try borrowing a different USB-C power adapter from a friend with a compatible MacBook Pro and test it. If that adapter charges your machine, your original adapter may be faulty and needs replacement. If the borrowed adapter also does not work, the charging port or battery itself may have a problem, and you should contact Apple Support.

Using third-party USB-C adapters and cables

You do not have to buy a replacement adapter from Apple. Many third-party manufacturers make USB-C power adapters that work with MacBook Pro. Look for adapters that are certified by USB-IF (the USB standards organization) or that carry a certification mark from a testing body like UL or FCC.

When shopping, match the wattage to your model. A 13-inch MacBook Pro needs at least 67 watts, while 14-inch and 16-inch models need 96 watts or higher. You can use a higher-wattage adapter without problems — the MacBook Pro will only draw the power it needs.

Avoid very cheap adapters with no brand name or certification. Low-quality adapters can overheat, fail suddenly, or in rare cases damage your MacBook Pro's charging port. Spending a bit more on a reputable brand is worth the safety and reliability.

Frequently Asked Questions

Can I charge my MacBook Pro with my iPhone charger?

Only if your iPhone charger is USB-C and has at least 20 watts of power. Most newer iPhones come with USB-C chargers, but older models use Lightning. Even if the connector fits, a very low-wattage charger (like 5 watts) will charge your MacBook Pro extremely slowly or not at all while the machine is in use.

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

No. Modern MacBook Pro batteries are designed to handle constant charging. Once the battery reaches 100 percent, the charger stops sending power and switches to maintaining the charge. Leaving your machine plugged in will not damage the battery or reduce its lifespan significantly.

Why is my MacBook Pro charging slowly even though I am using the original adapter?

Check whether you are running demanding programs like video editing or games. These use power while charging, which slows the process. Also check if your MacBook Pro feels warm — if it does, let it cool down. If charging is slow even when the machine is idle and cool, the charging port or battery may have an issue and should be checked by Apple.

Do I need to fully drain my MacBook Pro battery before charging?

No. Modern lithium batteries in MacBook Pro work best when you charge them frequently, even if they are not fully drained. You can plug in your MacBook Pro whenever you want without harming the battery.

What does the amber light on my power adapter mean?

Amber means your MacBook Pro is currently charging. Green means the battery is full and the charger is in standby mode, maintaining the charge. If the light is off, the adapter is not receiving power — check that it is plugged into a working outlet.