The expansion board allows for the connection of an external 3.7V lithium battery and supports charging the battery via USB; The ESP32-C3 SUPERMINI expansion board is specifically designed for the ESP32-C3 SUPERMINI development board. It addresses many limitations of the ESP32C3 SUPERMINI development board.; If a higher voltage output is required, you can short the PCB (as shown in the image below). In this case, VCC1 and VCC2will output the power supply voltage of 3.7V.; The expansion board provides a better power supply solution, featuring
two power outputs: VCC1 and VCC2 for ESP32-C3/ ESP32-S3 /ESP32-H2 /ESP32-C6; All 10 GPIO pins are extended, making it convenient for users to connect various sensors.