Build an ESP32-CAM Developers Module with Power Supply
Esp8266 Esp32 Power Supply Rechargeable Dual 16340 Lithium Battery Charger Shield Module For Arduino R3 Board Power Bank - Integrated Circuits - AliExpress
I'm trying to power a LoRa ESP32 board (SX1276) for a letterbox sensor. The board is in deep sleep until triggered by a pin change (door sensor), sends LoRa message, then returns
How to Power ESP32 with Battery
Battery-Powered ESP8266 Sensor? Never Been Simpler | Hackaday
Esp32 Esp32s 16340 18650 Lithium Battery Shield V3 V8 V9 5v/3a 3v/1a 3.3v 5v Power Bank Battery Charging Module Micro Usb Type-a - Integrated Circuits - AliExpress