My understanding is that the BMS system on EarthX batteries does more that just OV protection between ~16 and <=60v. In my case, it alerted me to a cell imbalance, which was more or less inconsequential other than cancelling the flight and replacing the battery as a precaution. Maybe it prevented a AOG away from my home airport, or worse.
2000 RV-8A | O-360, FP, G3X Touch, VP-X, EarthX
Eastern Shore | KESN