Hazardous materials: Explosives, compressed gases, flammable liquids (gasoline, thinners), oxidizers, poisons, radioactive materials, and corrosives.
Spare batteries: All loose lithium batteries and Powerbanks (these are strictly prohibited in checked luggage).
Lighters: Most types of lighters are not permitted in checked baggage. See the Transportation Rules section for the full list of restricted and prohibited items: https://www.azal.az/en/information/transportation-rules/