DIY Power Bank Module – 5V 2A Output (Type-C Input / Soldered USB-A Output)

Ever wanted to build your own custom portable charger? This module makes it incredibly easy. It combines a lithium battery charger and a 5V boost converter into a single board. Simply connect a 3.7V Lithium-Ion battery (like a recycled 18650 cell) to the B+ and B- pads, and you’re done! You can charge the battery using a modern USB-C cable, and power your phone or Arduino project using the standard USB-A port. It even includes 4 LED indicators to act as a “fuel gauge,” showing you exactly how much battery life is left.