Should I use a 45W charger for my iPhone 16 Pro Max?

Do you have to use a 45w charger for the iphone 16 pro max? I was told by our cell phone company that if i don’t it will damage the battery.


[Re-Titled by Moderator]

Original Title: Charger requirements for iPhone 16 pro max

iPhone 16 Pro Max

Posted on Jun 18, 2025 3:56 PM

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Posted on Jun 18, 2025 4:14 PM

You don't need a 45 watt power adapter.

18 watts or larger is enough to fast charge it with a USB-C cable or 30 watts if you want to fast charge it via MagSafe. See Fast charge your iPhone - Apple Support


45 watts won't harm it (the phone won't draw more power than it is designed to) but 45 watts is a lot more than the phone needs.

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Jun 18, 2025 4:14 PM in response to NewUser234Ang

You don't need a 45 watt power adapter.

18 watts or larger is enough to fast charge it with a USB-C cable or 30 watts if you want to fast charge it via MagSafe. See Fast charge your iPhone - Apple Support


45 watts won't harm it (the phone won't draw more power than it is designed to) but 45 watts is a lot more than the phone needs.

Jun 21, 2025 4:10 AM in response to NewUser234Ang

You will see no benefit in using a 45W USB-C Power Adapter with your iPhone - and neither will your iPhone or its battery suffer any damage whatsoever in using a power source rated at less (or more) than 45W.


Most models of iPhone require a Power Adapter rated at 5W (i.e. 1.0A @5V) or greater to charge - although to charge efficiently a 20W USB-C power source that supports USB PD (Power Delivery) is recommended.


Charge the iPhone battery - Apple Support

Fast charge your iPhone - Apple Support

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Should I use a 45W charger for my iPhone 16 Pro Max?

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