In- service samples?
If I were running the forensic program, I'd be asking some of the airlines to provide samples of their batteries with varying service histories (together with the charger's history records) for some lab testing. Surely the cost of 100 new batteries (whoever picks up the tab) has got to be a drop in the bucket compared to the cost of aircraft down time being incurred.
Anyone know (or can say) if the regulatory agencies have requested battery samples to be sent to their labs?