Yes it will. P2 fits on a P3 battery. I just tried. It's the other way around. P3 charge plug won't fit on P2 battery.It can't be used and won't kill the battery... as the adaptors are different and the P2 charger won't fit on a P3 battery.
Yup. Sorry, I posted that backwards. Higher volt charger won't fit lower cell battery but lower volt charger will fit higher cell batter so as you mentioned, it should be okay.Yes it will. P2 fits on a P3 battery. I just tried. It's the other way around. P3 charge plug won't fit on P2 battery.
It should not. I've tried and mine does not fit. Also, per DJI's website, the P3 charger is not compatible with P2 batteries. The P3 charger puts out 17.4 volts, same as the P3 batteries. P2 batteries are 11.1 volts.