Check Voltage & Current on MacOS for Power Adapter

When you are using a MacBook, you may want to check the voltage and current of the power adapter. Here is a simple way to check the voltage and current of the power adapter on MacOS.

Open Terminal.app and type the command:

ioreg -l -n AppleSmartBattery -r |grep AppleRawAdapterDetails

You will get the following information included current and voltage:

"AppleRawAdapterDetails" = ({"IsWireless"=No,"AdapterID"=0,"FamilyCode"=18446744073172697098,"Watts"=89,**"Current"=4450**,"PMUConfiguration"=4448,**"Voltage"=20000**})