Amazon.com: JacobsParts Smallest USB Type C 3.7V Lithium Battery Charger Board 4.2V Charging Module with Protection Circuit and LED Charge Indicators 5V USB-C Input (2 Pack) : Automotive
Deyuer Battery Charger Fast Charge Stable Output Universal USB Connector Circuit Protection High Efficiency Battery Charging Convenient 1 Slot Li-ion Rechargeable Battery Charger for Travel - Walmart.com
Homemade Circuit Projects: USB Li-Ion Battery Charger Circuit - Auto-Cut off Current Controlled | Circuito eletrônico, Eletrônica, Auto
Lithium Ion Battery Charger Circuit: Load Sharing - MicroType Engineering
18650 LI-Ion Battery Charger and Dual USB 5V 2A Step Up Power Supply M – Envistia Mall
Li-ion charger BQ24295 with 5V USB output board
1S 3.7V Lithium Li-ion Battery USB Charger DC 5V Step Up Converter UPS Module | eBay