Short as consequence of heat inside box
Hi,
FullWings @ # 523
"It just appears to me that the
combination of cobalt chemistry and a lot of high-capacity cells jammed together isn't the right way to go for anything that flies. Or drives. Or floats..."
And for anything in ground too. So the question is: Why the cell(s) started to overheat?
The "equivalent circuit" derived from a visual analysis of the ANA battery shows clearly the temperature inside the case was so high that caused a dramatic short circuit that "fused" an intercell strap and a thick ground wire. I tend to think as the increasingly hot cells inside the case like you put created the short circuit of cell # 3 to ground. (~ 12 V applied in resistance of miliOhms. Surge current of hundred Amps. (probably thousands Amps).
I donīt put as probable a short circuit as the trigger of the battery destruction. FDR iirc data is compatible with the model i presented.