voltage drop

I am interested in doing a DIY battery project to improve the margin of flight safety. I have seen reports of "P3 dropped from the sky" in which an analysis showed the battery voltage dropped dangerously low (close to 3 volts) while the capacity display showed enough energy for a safe landing...

Hey guys, I asked this in the DJI forum but wanted some extra opinions, if that's okay :) I was checking out my flight logs and noticed major deviations in the voltage of my battery. Since the bird is pretty new (less than a month) and the battery has only been charged 3 times, I wanted to be...