ESP32 CoinCell is a Tiny, Coin Cell Powered ESP32 Pico D4 Board
ESP32 board powered by a rechargeable coin cell battery
https://www.cnx-software.com/2019/02/13/esp32-coincell-battery-board/
![](https://sp-ao.shortpixel.ai/client/to_webp,q_lossless,ret_img,w_530,h_398/https://everythingesp.com/wp-content/uploads/2019/03/WC3ATUn2dROAMIPNgE05H90pP3PEMSJSoINRPbONevrg-3b3rZ.jpg)
ESP32 CoinCell is a Tiny, Coin Cell Powered ESP32 Pico D4 Board
ESP32 board powered by a rechargeable coin cell battery
https://www.cnx-software.com/2019/02/13/esp32-coincell-battery-board/