TURIN
It is only when as, Eeng has alluded, Boeing/Thales bung eight of them together and attach them to an aeroplane that it all goes wrong.
Is there precedent for a single battery in service aboard an aircraft?
In "Large Format"?
All of Boeings propositions have to do with protecting seven cells from just one.
So, when was this single battery tested under CFR? Cold soak, pressure cycles, charge discharge, load, SOC over time (storage). Inert storage?
I think it has more to do with aeronautical conditions, than keeping company with other batteries.
The obvious possibility is degradation of capacity and performance, faster than was predicted
on the bench. Boeing, (No one) tested this battery in the sky, integrated with all systems.
Of all the removed Batteries, did some of the locked out cells migrate back into the fleet? Disassemble, test, recharge, assemble and ship? Yuasa had a sole source contract for this battery, Take note of the "tamper proof seal" on the APU BATT......
Demands of service would have everything to do with performance, whether solitary, or grouped in eights?