How long does a MacBook take to charge? What changes the time
How long a MacBook takes to charge from empty, why the last 20 percent is slower, and how charger wattage and use while charging change it.
How long does it take to charge a MacBook?
Roughly two to three hours from low to full with the original adapter and light use. The first 50 percent goes quickly; the end slows on purpose to protect the battery.
Why does the last 20% take so long?
Lithium batteries charge at a reducing current as they approach full, and Optimized Battery Charging may hold at 80 percent if you usually stay plugged in.
How do I see the time left to charge?
pmset -g battIt shows time remaining to full while charging. The battery menu shows it too.
Common questions
How long does a MacBook Air take to charge?
About two to three hours from low to full with the 30 W adapter, faster to 80 percent.
Can I use my MacBook while charging?
Yes. It slows charging a little, and a lot with a low watt charger.