`pmset -g` default settings vary by model. 

Configuration profiles for AC/Battery/UPS differ on a model by model basis, but the numerical value assigned to the default profiles (rather than custom) respectively remains the same. Thus, you can always revert to pmset defaults by running the following command. I've included pmset -g in the line so the default on the current configuration is shown after running it:

    pmset -c 2 -b 1 -u 1 | pmset -g

You can confirm these are the defaults after running the command by opening System Preferences > Energy Saver and seeing that the "Restore to Defaults" option is greyed out.