“Step-by-Step guide on how Lithium Battery charger circuit works and full assitance for DIY protect charger through USB port.
This step-by-step guidance and fully documented article will certainly help you to develop your own Lithium Battery charging circuit with a protective charging output.
The Circuit has been designed around the TP4056 chip and some other Integrated Circuits for Battery protection.
You can buy this same circuit form several existing webstores but I preferred to Do It myself and this way I can integrate the charging stage in my wearable devices by copy-paste the circuit schematic so you can do the same.”