Amazon.com: MakerFocus 4pcs 186 50 Charging Board Dual USB 5V 2.4A Mobile Power Bank Module 186 50 Lithium Battery Charger Board with Overcharge Overdischarge Short Circuit Protection DIY USB Power Bank Board :
5V 1A TP4056 Charging Module Type-C USB 18650 Lithium Battery Charger Board with Protection (Type-C USB) - Walmart.com
Lithium Battery Charging Board Dual USB Output Charger Module