I have A2164 30W charger of Mac book can I use it for my iPhone 12 for fast charging? Does that harm my phone battery health?
Yes you can use it and no it will not harm the battery. An iPhone regulates its own charging and will not take any higher current than it is designed to use.
Yes you can use it and no it will not harm the battery. An iPhone regulates its own charging and will not take any higher current than it is designed to use.
The wattage of the power supply doesn’t matter. You could charge with a gigaWatt power supply if there was such a thing. As long as the power supply outputs a USB standard 5 volts, the iphone itself will regulated the current draw. The power supply needs to be a minimum of 20W to support fast charging, but any Apple USB power supply of 20 or more watts will work just fine.
iPhones, iPads and Mac laptops all self-regulate their own charging. They will never draw more current then they are designed to use, regardless of how much excess current a power supply could provide.
Thanks Michael. Till what wattage can iPhone 12 be leveraged to?
Fast charger
