Find the right power adapter and cable for your Mac notebook — Apple Support

If your power adapter, AC wall adapter, or AC power cable has been damaged, stop using it. If you’re unsure about whether an accessory is damaged, take it to an Apple Retail Store or Apple Authorized Service Provider for evaluation, or contact Apple Support.

Signs of damage include but aren’t limited to:

• Any breakage or visible wear on a cable’s outer layer
• Bent, missing, loose, or broken AC prongs or blades
• AC blades that won’t lock into place, or that have black marks or other visible damage
• Sparks issuing from somewhere other than the blades of a plug
• Breakage, visible damage, or discoloration of the adapter casing
• Popping sounds from within the AC wall adapter or anywhere on the AC power cable
• AC adapters that don’t power your device

Note: If the blade or prong on a power adapter or prong on an AC power cable is visibly loose, bent, or broken off and stuck inside an electrical outlet, there’s a safety risk. Follow these steps: 

1. If a blade or prong on an AC wall adapter or AC power cable seems damaged or gets stuck in a wall outlet, don’t repair, touch, or remove it, and don’t touch or use the electrical outlet.
2. Remove the risk of electric shock from the affected outlet by turning off all power to that outlet from your circuit breaker or fuse box. If you’re unable to turn off the power to the electrical outlet, or can’t confirm the power has been turned off, contact a qualified electrician.

When an iOS or iPadOS device comes with an Apple USB power adapter, that adapter is certified to meet government safety standards in countries and regions where the device is available. Many of these countries and regions, including the United States, have adopted the Safety of Information Technology Equipment standard, IEC/UL 60950-1.

Apple USB power adapters are designed for use with power sources rated to provide 100V AC to 240V AC at 50Hz to 60Hz. The Type A (flat parallel-blade design) Apple 5W USB, 18W, and 20W USB-C power adapters, as well as the 10W and 12W USB power adapters (with Type A AC plug attached) also comply with the IEC/UL 60950-1 and IEC/UL 62368-1 standards for use with power sources rated to provide 115V AC at 400Hz.

These power adapters are also available separately from Apple and authorized Apple resellers.

• Never charge your device when moisture is present, as this can cause fire, electric shock, injury, or damage to your Apple product or other property.
• Make sure you’ve fully inserted your AC wall adapter («duckhead») or power cable into your AC adapter before connecting the AC adapter to a power outlet.
• When you unplug a cable from your product, a power source, or an AC adapter, hold on to the connector at the end of the cable. Pulling on the cable itself can strain the connector joints or cause breakage.
• If your AC adapter has blades or prongs that fold, be sure to fold them down for protection when you store the adapter.
• Keep ports and connectors on your AC wall adapter and AC power cable free from foreign objects and debris.
• Make sure your adapter is used in a well-ventilated area. If used in a poorly ventilated space like near a couch, under a blanket or on thick carpeting, the adapter might turn off to prevent overheating.