About Lithium Battery, What Vapers Need To Know How Do Lithium ion Batteries Affect Rechargeable Vape Longevity vs. Disposable Options? 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 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