3.7V Lithium Battery Charger Protection Board 5V 1A 2A Li ion Lipo Battery Charging Protect Two in one Module Micro USB Type C|module 5v|module boardmodule charger - AliExpress
Lithium Li-ion 3.7V Battery Charging Board Mini DC 5V Converter DIY Power Supply | eBay
TP4056 1A Li-Ion Battery Charging Board with Current Protection