Charging time depends on which MacBook you own and what charger you use

A MacBook with an empty battery takes between one and three hours to charge fully, depending on the model year, the wattage of your charger, and whether you use the device while charging. Newer MacBooks with larger batteries and higher-wattage chargers charge faster than older models. If you use your MacBook while it charges, the process slows down because the charger must power both the device and the battery at the same time.

The fastest charging happens when you shut down your MacBook completely and plug it in. The slowest happens when you run demanding tasks — video editing, compiling code, or gaming — while charging. Most people charge while working, so expect something in the middle of the range.

Key Takeaways

  • M1, M2, and M3 MacBooks charge in roughly one to two hours with their original charger when the device is asleep or shut down.
  • Intel-based MacBooks from 2015 to 2017 take two to three hours because their batteries are larger and chargers are lower wattage.
  • Using your MacBook while it charges adds 30 minutes to an hour to the total time, depending on what you are doing.
  • A charger with higher wattage (96W or 140W) charges faster than the lower-wattage charger that came with your model.
  • Battery health degrades slightly each time you charge, so charging to 80 percent and stopping there extends the lifespan of your battery.

Charging times for current MacBook models

The M3, M2, and M1 MacBooks charge the fastest of any recent model. An M3 MacBook Air with a 30W charger reaches full charge in about 90 minutes when shut down. An M3 MacBook Pro with a 67W or higher charger reaches full charge in about 75 minutes. These times assume the device is asleep or powered off.

The M1 MacBook Air and M1 MacBook Pro take slightly longer — roughly two hours — because the charger that shipped with them is lower wattage. If you use a higher-wattage charger designed for a newer model, you can shorten this by 15 to 30 minutes.

The 14-inch and 16-inch M3 MacBook Pro models with 140W chargers are the fastest to charge. They reach 50 percent in about 30 minutes and full charge in roughly 60 to 75 minutes when powered off. These larger models have bigger batteries, but the much higher wattage more than makes up for it.

How using your MacBook while charging affects speed

When you work on your MacBook while it charges, the charger must split its power between running the device and filling the battery. This means the battery charges more slowly. A task that draws little power — writing in a text editor, browsing the web — adds 20 to 40 minutes to the total charge time. A task that draws heavy power — video rendering, large file transfers, or running virtual machines — can add an hour or more.

The screen brightness also matters. A bright screen uses more power than a dim one. If you lower brightness while charging, you reduce the load on the charger and the battery charges faster. Closing unnecessary browser tabs and background applications has a smaller effect but still helps.

If you need a full charge quickly, shut down your MacBook or put it to sleep and plug it in. This is the single fastest way to charge. If you must work while charging, dim the screen and close heavy applications.

What happens in the first 30 minutes versus the final hour

MacBooks charge fastest in the first 30 to 50 percent of the cycle. During this phase, the charger delivers full power to the battery. A MacBook that takes 90 minutes total to charge from empty will reach 50 percent in roughly 30 to 40 minutes.

The final 20 percent of charging is much slower. Once the battery reaches 80 percent, the charger reduces power to protect battery health. This is intentional — charging to 100 percent and staying there degrades the battery faster than stopping at 80 percent. The last 20 percent can take 20 to 30 minutes even though the first 50 percent took only 30 to 40 minutes.

If you are in a hurry, unplug at 80 percent. Your MacBook will run for hours on that charge, and your battery will last longer overall. If you need to reach 100 percent, plan for the full time and accept the slower final stretch.

Using a different charger than the one that came with your MacBook

A higher-wattage charger will charge your MacBook faster than the original charger, but only up to a limit. Your MacBook will not accept more power than it is designed to handle. An M1 MacBook Air designed for a 30W charger will charge faster with a 45W or 67W charger, but the improvement is modest — roughly 15 to 20 minutes faster.

A lower-wattage charger will charge your MacBook much more slowly. Using a 30W charger on a 16-inch MacBook Pro designed for 140W will take three to four hours or longer. The charger straightforward cannot deliver enough power to charge at normal speed.

All modern MacBooks use USB-C charging. Any USB-C charger rated for your MacBook's wattage or higher will work. You do not need the exact charger that came in the box, but using one rated for your model is the safest choice.

Why your MacBook might charge slowly even with the right charger

If your MacBook is taking longer than expected to charge, the charger cable may be damaged or the charging port may be dirty. Inspect the cable for visible damage — fraying, cracks, or bent connectors. Look inside the USB-C port on your MacBook with a flashlight. If you see dust or lint, gently clean it with a dry cotton swab or a small brush. Do not use liquid.

A MacBook that is very hot will also charge slowly. If your device has been running heavy tasks, let it cool down for 10 to 15 minutes before plugging it in. The charger will deliver full power once the internal temperature drops.

Battery health also affects charging speed. A battery that has degraded significantly — usually after several hundred charge cycles — may charge more slowly than a new battery. You can check battery health by holding Option and clicking the battery icon in the menu bar, then looking at the "Condition" line. If it says anything other than "Normal", the battery is aging and will charge more slowly.

Frequently Asked Questions

Is it bad to leave my MacBook plugged in overnight?

Modern MacBooks are designed to handle this. Once the battery reaches 100 percent, the charger stops delivering power and the device runs on AC power alone. However, keeping the battery at 100 percent for long periods does degrade it slightly over time. If you charge overnight regularly, unplug in the morning rather than leaving it plugged in all day.

Why does my MacBook charge to 80 percent and then stop?

This is a feature called Optimized Battery Charging. Your MacBook learns when you usually unplug it and slows charging to 80 percent until shortly before that time, then charges the final 20 percent. This extends battery lifespan. You can turn it off in System Settings under Battery, but leaving it on is better for long-term battery health.

Can I use my MacBook while it charges without damaging the battery?

Yes, it is safe. Using your MacBook while charging does not damage the battery — it just slows the charging process because the charger must power both the device and the battery. The battery itself is not harmed.

Does a cold MacBook charge slower than a warm one?

Yes. Batteries charge most efficiently at room temperature. If your MacBook is very cold, let it warm up for a few minutes before plugging it in. If it is very hot, let it cool down. Extreme temperatures in either direction slow charging and can temporarily reduce battery capacity.

Will a third-party USB-C charger charge my MacBook as fast as the original?

If the third-party charger has the same wattage as the original, yes. A 67W third-party charger will charge an M2 MacBook Pro just as fast as the Apple 67W charger. Make sure the wattage matches your model and that the charger is from a reputable manufacturer.