Amazon.com: Nitecore UMS2 Intelligent USB Dual-Slot Quick Battery Charger for Li-Ion/Ni-MH/Ni-Cd/IMR 16340 14500 18650 21700 20700 AA AAA and More Batteries, with LumenTac Battery Organizer : Electronics
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
14 Vape Battery Safety Tips That Save Money & Lives
14 Vape Battery Safety Tips That Save Money & Lives
The Best Internal Battery Mods
14 Vape Battery Safety Tips That Save Money & Lives