My Experience with Luggage and especially batteries in "exotic" destinations is that it's more or less pure luck and randomness. Depends on who's on duty that day.
E.g. international regulations say to transport Lithium Batteries in carry-on. The guys at Marsa Alam Airport in Egypt told me to put them in the checked baggage, because they would be removed from my carry-on. Did that, checked my bags and realised that i forgot some of my Dive Light Batteries (26650) in my Backpack. The Carry-On guys didn't care at all... i guess they didn't even look at the display of the X-Ray machine...
E.g. international regulations say to transport Lithium Batteries in carry-on. The guys at Marsa Alam Airport in Egypt told me to put them in the checked baggage, because they would be removed from my carry-on. Did that, checked my bags and realised that i forgot some of my Dive Light Batteries (26650) in my Backpack. The Carry-On guys didn't care at all... i guess they didn't even look at the display of the X-Ray machine...