Amazon.com: Onyehn 3.7V Turn 5V 2A Boost Step Up Module Dual USB Charging Circuit Board PCB Board with Led Light for 18650 Lithium Battery Mobile Power Bank DIY 2 Pack : Electronics
5V 1A USB Type-C Lithium Li-ion 18650 Battery Mini Charger Module Charging Board | eBay
TP4056 Type-c USB 4.5-5.5V 1A 18650 Battery Charger Module Pack of 2 - Blue - - 36405483