I'm with Boeing in this fix. The problem is not with the "the large amount of electrical systems, lack of bleed air". This is how things evolved.
The main issue IIRC was manufacturing defects in some batteries that caused internal short circuits.
> The fix was to put them in a stronger container with a hole in it so they can vent outside
And this is an acceptable fix (beyond better QA/manufacturing practices of the battery). If the batteries fail the fault should be contained.
The article you linked explains the changes Boeing implemented.
Yes, batteries failed. The battery failure was contained correctly. Besides improving the reliability of the battery (which was addressed with some changes) that's what Boeing should have done (and did).
Also, unless you can guarantee the failure rate of the battery to be low enough, those incidents made it clear the battery needed to be better contained—even if you also decrease the failure rate.
The main issue IIRC was manufacturing defects in some batteries that caused internal short circuits.
> The fix was to put them in a stronger container with a hole in it so they can vent outside
And this is an acceptable fix (beyond better QA/manufacturing practices of the battery). If the batteries fail the fault should be contained.
The article you linked explains the changes Boeing implemented.
Yes, batteries failed. The battery failure was contained correctly. Besides improving the reliability of the battery (which was addressed with some changes) that's what Boeing should have done (and did).
They're not going back to NiCa or Lead batteries