What is a Vape pen | Cartridges Buy cartridges or cart | Vape pods. A vape pen is a power source that heats up a vape tank or cartridge to produce vapor. They’re rechargeable battery-powered devices that are pocket-sized and cylindrical – hence, the name “pen.” Vape pens first hit the e-cigarette scene around 2010 from a company called Janty, then shortly after...