iPhone 14 Pro Max Charging
Can I use and is it safe to use my MacBook Pro 61W USB-C Power Adaptor to charge my iPhone 14 Pro Max? Is that too much Wattage as sometimes the back of my phone overheats.
iPhone 14 Pro Max
Question marked as
Yes, as ArmMan1016 says. The power source does not regulate the charge rate; that is done by a charger microcircuit in the phone, so there is no problem using a power source with more capacity than the phone needs. It’s also normal for the phone to get warm when charging. If the phone overheats it will shut down and display a message saying that it has to cool down. If you don’t see that message it hasn’t overheated.
The reason it gets warm (especially when fast charging) is the Second Law of Thermodynamics. Anything that creates or uses energy does so with some loss. That lost energy is expressed as heat. So when you charge the phone it generates heat in the power source, heat in the charger circuit in the phone, and heat as the energy goes into the battery. The faster the charging, the more heat is generated. Likewise when you discharge the battery; not all of the energy from the battery gets to the circuits that use it. Some of it becomes heat.
