Cell phones, cell phone battery charging cases, laptops, cameras, smart phones, electronics, data loggers, PDAs containing lithium batteries, games, tablets, watches, etc.

Devices containing lithium metal or lithium ion batteries (laptops, smartphones, tablets, etc.) should be carried in carry-on baggage.

https://www.faa.gov/sites/faa.gov/files/hazmat/packsafe/resources/Airline_passengers_and_batteries.pdf