Lyman
My concern is that someone who, unlike you, I, and others, may not have read the entire thread stumbling in here, sees your post, and believes that at least the battery in the JAL incident was not essentially brand-new.
Anybody remember the post some 300 ago about the article in Flight Global that mentioned that Boeing had changed the architecture of the battery, and was going trying to get the new version in the first delivered aircraft? Is that where they decided to go with the 6x8 configuration? Has this thing had ANY flight test?