manrow
lack of current B787 reports on Rumours and News
One of the battery fixes was to tighten up the charge/discharge limits in the firmware. Its possible that this may have made some difference in subsequent 'eventful' failures. The type that make it here and onto the nightly news. On the other hand, battery lockouts and maintenance removals may (or may not) have gone up, down or sideways. We may never know. And the price of the fix might be more frequent replacements. I'm no longer in a position to see this data.
Heck, when I was in the electrical design group at Boeing, we didn't have access to this data. Occasionally the
would hit the fan and we'd be told to redesign something. But absent that, there's probably someone in maintenance engineering plotting this stuff on a graph and submitting it in a quarterly report. Where it gets filed in that same warehouse that Indiana Jones' Ark of the Covenant was stored.