Up in smoke: Considerations for lithium ion batteries in disposable e cigarettes ScienceDirect Disposable vapes with rechargeable Li ion cells: Why? Vincent Chevrier posted on the topic LinkedIn 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 Vape batteries Safety guide Prime Vapes UK I've been salvaging these disposable vapes for the 3.7v 500mAh lithium batteries inside. They can be used to power small electronic projects with the appropriate charging circuit and voltage converter. : r diyelectronics