it seems to me that Li-ion cells release their charge differently to LIpo cells when they reach a certain voltage,and if the ESCs ask for more power they cannot provide it quick enough,so it gives a low voltage warning, obviously temperature will play its part, as no type of battery likes the cold whatever the chemistry involved
Would be interesting to keep an eye on the HD life of suspect battery in Airdata, is its percentage deterioration faster than the other two batteries? Also, batteries have only 6 month warranties so may be worth taking up with DJI.
I think this is one of the first times li-ions have been used instead of lipos for an RC aircraft. The reason they aren't normally used are becoming more apparent. Although, for the most part, they do seem to work ok.