GoKawiilTSA lithium-battery rules clarified amid growing airline restrictions on power banks
Lithium-ion batteries can suffer thermal runaway, an uncontrolled overheating reaction that can cause smoke, fire or shrapnel, and the FAA has logged over 700 such incidents since 2006, nearly 40% involving portable chargers. The TSA requires devices with lithium metal or lithium-ion batteries to be carried in cabin baggage rather than checked, and several airlines and regulators have added their own stricter rules on power banks specifically.