That's strange, the TSA made me put them in my checked baggage on my last Hawaii flight, but then again, when has the TSA ever got anything right.no you have that wrong you have to carry on batteries as I have made many flights with mine and the tradercraft case fights in almost all airlines overheads.
https://www.faa.gov/about/office_or...edia/faa_airline_passengers_and_batteries.pdf
Q2. What kinds of batteries does the FAA allow in checked baggage?
A2. Except for spare (uninstalled) lithium metal and lithium-ion batteries, all the batteries allowed in carry-on baggage are also
allowed in checked baggage.