USB Type C Port and Lithium Ion Battery Charging Kit – The Saber Armory
Charging Lithium-Ion and LiPo Batteries the Right Way
Adafruit Universal USB / DC / Solar Lithium Ion/Polymer charger [bq24074] : ID 4755 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
7.4V Two Step Lithium Battery Charger Circuit - CC and CV mode
Need help with the following TP4056 board. When charging both Blue and Red LEDS light up. Voltmeter reading at OUT+|OUT- is 4.1v, however battery charge doesn't go above 3.7v even after 4-5