Concours77
I sure hope you're not a pilot (or in the industry) - your lack of knowledge of the regulations is shocking if you are...
There are regulatory requirements for reporting "incidents" - with rather strict guidelines as to what constitutes an incident (commonly known as 21.3 reports) - and a battery meltdown certainly qualifies. The FAA sees every 21.3 reports submitted. Failure to report (or to cover up) a reportable event is a major violation - consequences can vary from multi-million dollar fines to having your airworthiness certificate pulled.