An electronic cigarette is usually powered by a rechargeable lithium battery. It's a replaceable cartridge to the e-liquid also. It really works due to the present microelectronic engineering. Once the system is activated, the e-liquid is heated and converted to vapor which a person inhales. Very little smoke is inhaled. https://keeganoxzch.dailyhitblog.com/31578867/5-tips-about-electronic-cigar-you-can-use-today