To start with: I am not a battery specialist - at itīs best a thoughtful user ! I only have two 36 V 10,5 Ah battery packs - LiFe4Po of course not these potential life fire bombs types.
However if one looks at that post # 1034 picture of the B787 battery and the attached text something springs in my mind.
Yuasu says in itīs data sheet about the LVP 65 battery that it runs at 3,7 V and 65 Ah per cell. The picture shows clearly the repeatedly mentioned number of 8 cells connected in line NOT parallel. If my little mathematics are not completely gone with the years 8 x 3,7 = 29,6 V !! So how can they claim in the data under that picture that the battery delivers 32 V ???
Furthermore usually these LiIon batteries should be discharged only up to - so called 2 C . That would be in the case of the Yuasu cells - having 65 Ah a max of 130 Ah - not 150 Ah !! for a max period of time of 30 min. There is of course the possibility to discharge at higher rates than 2 C but what Iīve read about that indicates, the higher the discharge rate the hotter the pack gets and the bigger the possibility of battery "problem" become !!
Keep that in mind and look at the dense packing of the cells and simply imagine how hot it might become in the core with no obvious cooling installation at work at all !! if there is is really pulled up to 150 Ah.
There is a website under
Basic to Advanced Battery Information from Battery University that has some very interesting facts listed about the different types of batteries. One of these facts they cite is - if an LiIon battery was discharged too low in Volts remaining and an attempt is started to charge it with the normal charging installation it might end up with a shunt and short in the cells with all unwanted consequences.
Since all of this is simple traceable knowledge the more one wonders how in heaven such a fine product - as the B 787 obviously is - was set in such a jeopardy ??