I don't have 5V. I have 3.7V from LiPo with 3.3V regulator. Can I connect 3.3V from power supply to the 3.3V pin in a top left corner of the ESP32-DevKitC? I mean, its from battery, so it doesn't have Micro USB cable. Its not clear what that 3.3 pin is doing, is it IN or OUT pin? I was completely un...

I need ESP32-DevKitC to run away from power provided by USB port, like directly from battery that doesn't have USB cable.

What pins do I need to power up, 3.3V or 5V and what are min & max limits?