In light of Nikon’s announcements of a recall once again for lithium batteries that go back as far as 2012 it does not hurt to keep up to date with FAA regulations.  Info on DPREVIEW

Batteries – These are FAA  rules governing batteries on USA airlines from 2015.  I do not believe too much has changed but it does not hurt to be reminded.

Source: Airline Passengers and batteries December 1 2015 – FAA_airline_passengers_and_batteries.pdf