[ News >Yale Medicine They are not recommended for non-smokers and cannot be sold to people under 18 years old. In recent years, e-cigarettes have become a very popular stop smoking aid in the UK. Passengers are required to take effective measures for preventing accidental activation of the heating element of the device when transporting the devices. See the FAA regulations for examples of effective measures.Each lithium ion battery must not exceed a Watt-hour (Wh) rating of 100 Wh