If this batteries has an excellent measuring and control system, why didn't it cut off / send low warnings when it approached it critical low level? Or did it.
Anyway it seems Airbus better Indentified the risk of the use of these batteries at the start of the program, warned everybody, seperated the cells for cooling, took smaller ones and... developped a plan B in parallel just in case off..
Airbus says it has a Plan B for A350 jet batteries | Reuters