![charger - How do I know if TP4056 charging modules are faulty - Electrical Engineering Stack Exchange charger - How do I know if TP4056 charging modules are faulty - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/n9ZiW.jpg)
charger - How do I know if TP4056 charging modules are faulty - Electrical Engineering Stack Exchange
![Amazon.com: MakerFocus 10pcs TP4056 Charging Module with Battery Protection 186 50 BMS 5V Micro USB 1A 186 50 Lithium Battery Charging Board : Electronics Amazon.com: MakerFocus 10pcs TP4056 Charging Module with Battery Protection 186 50 BMS 5V Micro USB 1A 186 50 Lithium Battery Charging Board : Electronics](https://m.media-amazon.com/images/I/71l8XPEkOPL._AC_UF894,1000_QL80_.jpg)
Amazon.com: MakerFocus 10pcs TP4056 Charging Module with Battery Protection 186 50 BMS 5V Micro USB 1A 186 50 Lithium Battery Charging Board : Electronics
![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 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](https://preview.redd.it/bzg49mpupy881.jpg?width=640&crop=smart&auto=webp&s=c694628d7423c7491a00bdac5dc16b8436c1d431)