The U.S. aircraft register, updated daily
Parts

Battery Packs

0 failure reports named the battery packs in the last ten years, 41 since 1996.

Reports by year

0481115151996104121999
Reports by year, as a table
reports
199615
199710
19984
199912

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.