GitHub - frolswe/esp-battery-logger: Simple project for the esp8266 using the power saving features of the chip to test the possibility of battery powered sensors.
Design your own ESP Board for Battery Powered IoT Applications
Basics: Project 021h ESP8266 WiFi modules - voltage regulator at Acoptex.com / ACOPTEX.COM
Battery powered weather station with ESP8266 and BME280 — glsk
IoT Based Battery Status Monitoring System using ESP8266
A battery fed MQTT weatherstation – Arduino, ESP8266, ESP32 & Raspberry Pi stuff
Battery Powered ESP8266 WiFi Temperature and Humidity Logger
ESP8266 Voltage Regulator For LiPo and Li-ion Batteries | Random Nerd Tutorials
I have just made a prototype of ESP8266 (ESP-01) IoT temperature & humidity SI7021 sensor and also 2x three pin soil moisture s… | Iot, Arduino, Humidity sensor