Mini 2 In 1 3.7V 3.8V Li-Ion Li-Polymer Battery Charger & 4.2V To 3.3V 3V Ldo Buck Dc Dc Converter Module Ups Diy CRLD20MA - AliExpress
BM Premium 2 Pack of EN-EL23 Batteries and Battery Charger for Nikon C – Big Mike's Electronics
Amazon.com: 8 Bays Charger USB C Battery Charger XTAR VC8 Type C 3A Fast Charger 8-Bay Smart Charger LCD Display for 3.6V 3.7V Li-ion 1.2V Ni-MH C (Package Not Including Battery) :
5V 2A Type-C USB 3.7V 3.8V 18650 Lithium Li-ion Battery Charger Board Power Bank | eBay