Where did you get that information from ?
There was a discussion a while back about a power value stored on a file on the internal SD card on the PCB.
This was heavily discussed by us in the P3 thread in RCG, DJI support them selves confirmed what i posted. every P3 that ships is identical, its on power up it decides its output based on GPS signal, that what we were told and have no reason to question this.