Adafruit Universal USB / DC / Solar Lithium Ion/Polymer charger [bq24074] : ID 4755 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
2 Slots 18650 Charger Independent Charging 3.7v Li ion - Temu
Amazon.com: 18650 Battery Charger 4 Bay Smart Universal Charger for Flashlight Headlamp Battery 3.7V Rechargeable Lithium Li ion Batteries Compatible 18650 26650 21700 10400 Battery Charger (Only AC Charger) : Electronics
Battery Charger 3.7v Li-Ion Rechargeable Batteries Lithium for Flashlight Lot US | eBay
Battery Charger 3.7v Li-Ion Rechargeable Batteries Lithium for Flashlight Lot US | eBay