A STAGGERING $17,000 fine awaits Americans who made the wrong choice of cell phone and try to fly with it. AdvertisementThe Samsung Galaxy Note 7 is notorious for its failing lithium-ion batteries, which were liable to ignite or explode even when handled with the utmost care. But it can be presumed that the fine would be fairly high given how consistently the TSA and airlines have been issuing lithium-ion battery guidance. In May 2025, the TSA confirmed that lithium-ion power banks and portable chargers must be packed in carry-on bags rather than being checked. Advertisement“Spare lithium batteries, which include both power banks and phone chargers, are prohibited in checked luggage,” it said on its website.