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 Rechargeable Vape Batteries VaporFi The Dangers of Loose Vape Batteries: What You Need to Know Pod Salt UK How to Reuse Disposable Vape Lithium Batteries : 6 Steps Instructables
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