Should Nicotine Warnings Be on All E Cigarettes? Comparing the regulation and incentivization of e cigarettes across 97 countries ScienceDirect Adults worry e cigarettes will encourage kids to start smoking tobacco National Poll on Children's Health E cigarettes or vapes are sold with either single use batteries or lithium ion rechargeable batteries. When vapes get crushed in general waste or mixed recycling, the batteries can spark. That spark becomes a fire.