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espen67 Author

Level 1

4 points

iphone 13 fast charger

according to the writing on the back, my (off brand) charger outputs 5V@3A, 9V@2.77A, and 12V@2.08A all at the same time. how is this possible

iPhone 13

Posted on Jun 17, 2022 12:49 PM

Top-ranking reply

FoxFifth

Level 10

471,717 points

Posted on Jun 17, 2022 12:58 PM

See the information in https://www.asme.org/topics-resources/content/explore-the-basics-of-usb-c-and-usb-power-delivery including the following:

The USB Power Delivery requires conforming equipment to initially deliver 5 V at a maximum of 900 mA to the load to prevent such damage. Communication between the load and the power source can then establish a higher maximum load current and greater operating voltage.

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iphone 13 fast charger

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