The name "Shadow charging" was invented by Oleg, after my suggestion of the feature.
Stock fw only had options Charger On or Charger Off.
If you wanted to charge the battery with the supplied external charger you had to turn "Charger On" in the settings each time you turned the radio off.
Likewise you had to go to settings and turn "Charging Off" before transmitting, as it was recommended to NOT CHARGE BATTERIES WHILE TRANSMITTING.
I suggested the feature of "automatically turning charging on when powering radio of" and vice versa.
And Oleg implemented it ?
SA5QED/David