Which charger does the MacBook Air 15-inch (M3, 2024) need?
Apple ships the MacBook Air 15-inch (M3, 2024) with a 35 W Dual USB‑C power adapter. Any USB‑C charger with Power Delivery can charge it, and a bigger one is safe: the Mac takes only the power it needs. For fast charging, Apple names its 70 W USB‑C Power Adapter.
Updated 5 November 2026 · Source: Apple Tech Specs
Chargers for this Mac
Compared with the adapters Apple puts in the box. The Mac never takes more power than it needs, so a bigger charger is always safe.
Check what your charger gives, without an app
- Hold Option, open the Apple menu and choose System Information.
- Select Power and find Wattage (W) under AC Charger Information. It’s the adapter’s rating.
Or in Terminal:
pmset -g ac
Both show what the charger can give, not how much is going into the Mac right now. More about charger wattage
Or watch it live
BatteryGuard shows the power going in and where it goes, and warns you when the charger can’t keep up.
Example readings from the app.
Questions
What charger comes with the MacBook Air 15-inch (M3)?
A 35 W Dual USB‑C power adapter, according to Apple’s Tech Specs.
Can I use a bigger charger with the MacBook Air 15-inch (M3)?
Yes. A higher-wattage USB‑C charger with Power Delivery is safe: the Mac takes only the power it needs. Apple quotes fast charging with its 70 W adapter.
Can I use a smaller charger?
Yes, it just charges more slowly. With less than the 35 W adapter Apple ships with this Mac, the battery may charge very little while the Mac is busy.
Does the MacBook Air 15-inch (M3) have Charge Limit?
Yes. With macOS Tahoe 26.4 or later you can set a Charge Limit between 80% and 100% in System Settings › Battery.