Why Does Mac Charger Get So Hot. Answer 1 of 8. I got it replaced.
This has been a problem since I bought the phone 4 months ago. Theres a small IC in that adapter that communicates with the Mac to identify it as having whatever wattage your charger is rated at. It is normal for your iPhone to get hot when charging with the 20w charger.
There are multiple reasons why your MacBook Pro might be getting hot but it is actually normal for your Mac to be slightly warm during normal operation.
Liz Scheltens explains with a little help from NPRs Planet Money. Lets explain why mobile phone chargers get hot and when you should be careful. A charger with a terminal thats compatible to a device port say a micro USB cable and port doesnt necessarily mean that the charger may be used to charge the device. Theres a small IC in that adapter that communicates with the Mac to identify it as having whatever wattage your charger is rated at.
