TinyPICO - ESP32 Development Board [V2] : ID 4335 : $20.00 : Adafruit Industries, Unique & fun DIY electronics and kits
Batterylife of D32 with Plantsensor and 700mAh Battery - ESP32 Forum
WEMOS WiFi & Bluetooth Battery ESP32 development tool ESP32 battery esp8266 ESP WROOM 32 ESP32 good|Integrated Circuits| - AliExpress
Getting the ESP32 to monitor its own battery level (for battery powered projects) - YouTube
193 Comparison of 10 ESP32 Battery powered Boards without display (incl. deep-sleep) - YouTube
ESP32-Powered FPV Car | Espressif Systems
Power Supply for ESP32 with Boost Converter & Battery Charger
ESP8266 ESP32 Power Supply Dual 16340 Rechargeable Lithium Battery Charger Shield Board For Arduino UNO R3 Power Bank Module|Instrument Parts & Accessories| - AliExpress
Guide to Reduce the ESP32 Power Consumption by 95%