About your Mac laptop’s power adapter

If you have a Mac laptop, plugging in the power adapter provides power to the computer and recharges the computer’s battery. For optimal performance, use a compatible power adapter —either a MagSafe or USB-C. For information about recommended power adapters, see the Apple Support article Use a power adapter with your Mac.

You can purchase a compatible replacement adapter from apple.com or an Apple Store.

MagSafe power adapter light colors

When you first connect a MagSafe power adapter to a compatible computer, the adapter light glows green for about a second to indicate that power is available. After that, the adapter light glows green or amber.

  • Green: A steady green light indicates that the battery is fully charged.

  • Amber: A steady amber light indicates that the battery is being charged.

To learn more about your computer’s battery, see Manage your Mac laptop’s battery.

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