Thank you so much, that is exactly what I was interested in learning.

Hello, I am using the DOIT ESP32 DEVKIT V1. I am trying to power it using an 18650 ranging from 3.3v-4.2v. If I connect battery positive to esp32 3.3v pin and battery negative to esp GND, the board powers up, lights up the on LED, and runs any sketch I have tried so far. It runs no problem when the ...