Thought I would post what my experimental/hybrid charging procedure as resulted in. Two flight batteries - both were new - OEM batteries. 1 flight pack was only charged with the DJI P3 charger while the 2nd flight pack was charged via a iCharger 208B @ 2amps for a 4s LiPo pack - then topped off with the DJI charger. Results Pack#1 • 31 Charges on pack#1 via the hybrid charging procedure. • Capacity @ 4516mAH. • Two cells 0.01 out of balance. Pack#2 • 30 Charges on pack#2 via OEM charger. • Capacity @ 4125mAH. • One cell out 0.01 out of balance. While both packs were purchased from the same location at the same time there still could be discrepancy in the individual cells - in hind sight if the cells were easy to get too I could have check the resistance of each and then the testing would have more merit - So take it for what its worth.