Are Lithium Batteries Used in Vapes? Understanding Their Role and Importance Zone Vapor Blog Free Lithium Batteries Inside Disposable Vapes! Every Vape You Recycle Prevents a Fire. Despite the ban on disposable vapes introduced last June, it's estimated that over 2 million are still being purchased every week in the UK. Each Did you know Lithium ion batteries, commonly used in vapes, can catch fire if they're damaged, improperly disposed of, or left charging long enough to overheat. Vaping is often seen as Not 18650 but related. Recently I've been salvaging li ions from disposable vapes. Usually they are between 2.6 and 3.3v depending on how long it's been sitting. This one was at 1v.