iPhone 15 Pro Max thinks charger is an Accessory?

My iPhone 15 Pro Max keeps giving me the message “cannot use accessory - this accessory uses too much power” but it’s for my USB-C wall charger, not an accessory. It keeps charging as normal, but the alert keeps going off every couple of minutes. I charge my phone at night and I’m a light sleeper so it’s pretty annoying. Any idea how to stop this?

Posted on Sep 27, 2023 7:10 PM

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Posted on Oct 1, 2023 5:56 AM

It sounds like your iPhone is seeing the mains adaptor as an accessory which needs to be charged from the iPhone. This suggests it is an uncertified third party charger which does not comply with USB-C specifications.


My advice is to test with and use a fully certified and approved power adaptor and USB-C cable, ideally genuine Apple to eliminate all doubt about compatibility.

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iPhone 15 Pro Max thinks charger is an Accessory?

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