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 Are Vape Pen Batteries Lithium Mood Shine Are Vapes Lithium Batteries IMREN 18650 Lithium Battery The rise of disposable vapes has fueled a growing e waste crisis, with millions of lithium ion batteries ending up in landfills and recycling centers, creating environmental and fire hazards. Fire Rover's 2024 report Lithium batteries used in vapes and e cigarettes can cause fires in waste or recycling wagons. Please do not place vapes or e cigarettes in your rubbish or recycling at home. Take them to Vaping Battery Safety & Terminology Royal Flush Vape