How do e-cigarettes work?
All e-cigarettes have a rechargeable battery or batteries, an atomiser coil which is heated by the battery, and a cartridge containing refill liquid. In some models the last two components are combined. When the switch is pressed, or in the case of auto models, when air is pulled through, the heating element vaporises the liquid and produces a mist. You draw or pull air through it just like a tobacco cigarette.