Chris.
with great respect, you are absolutely right. So too, am I. In your recent post your questions all have answers. My interpretations of the problems and the solution are based on prior art, prior knowledge, and I create an interpretation.
Architecture, partially, Control/management, parenthetically. Application, absolutely.
In post #525 I quoted what I perceive to be the basic and fundamental problem.
For YUASA. BOEING did not feverishly replace the BATTERIES because they thought the chargers and controls needed replacement.
OCCAM.
One more time. BOEING knew. All along. There is no mystery.
The current charade is a produced drama.
Too bad BOEING is too sick to admit the problem, fix it, and start flying.
PRIDE can be way expensive.