The location of the batteries in close vicinity to electronic modules and THE PLACEMENT OF TWO DENSE PCB´S in the same chamber of the cells SUGGEST the DECISION MAKING ON USE OF Li Ion was based on:
CELLS WIL NOT FAIL, WILL NOT go to THERMAL RUNAWAY AND BATTERIES WILL BETTER THAN PREVIOUS "STANDARDS" (Ni Cd).
This imho an ERROR, was partly made in "high rocks" of Boeing as we can imagine.
SPOT ON!
I fully agree.