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 Single use vapes sparking surge in fires at UK waste plants Vaping The Guardian Do Disposable Vapes Contain Lithium Batteries? Luckeevape China Vape Factory, Top Disposable Vape Manufacturer Lithium ion batteries, particularly in vapes, continue to climb in waste streams Tiny batteries and "disposable" e cigs remain big risks for waste handlers. : r environment