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.
![Amazon.co.jp: Rasbee ESP8266 ESP-12 Rating Board WIFI Test Board Full IO Lead Battery Holder and Included [Parallel Import] : Computers Amazon.co.jp: Rasbee ESP8266 ESP-12 Rating Board WIFI Test Board Full IO Lead Battery Holder and Included [Parallel Import] : Computers](https://m.media-amazon.com/images/I/81kOZq0iWzL._AC_UF894,1000_QL80_.jpg)
Amazon.co.jp: Rasbee ESP8266 ESP-12 Rating Board WIFI Test Board Full IO Lead Battery Holder and Included [Parallel Import] : Computers
![EndurEnergy Systems 20.48 kWh Battery Rack with Battery Bundle - four ESP-5100 batteries included - for Residential Energy Storage - ESP-BU20 EndurEnergy Systems 20.48 kWh Battery Rack with Battery Bundle - four ESP-5100 batteries included - for Residential Energy Storage - ESP-BU20](https://www.ecodirect.com/v/vspfiles/photos/EndurEnergy-ESP-BU20-2.jpg?v-cache=1676907814)
EndurEnergy Systems 20.48 kWh Battery Rack with Battery Bundle - four ESP-5100 batteries included - for Residential Energy Storage - ESP-BU20
![DIY WiFi mailbox sensor with ~12 years of battery, featuring ESP-NOW for subsecond transmission rates and MQTT. More info in comments : r/homeassistant DIY WiFi mailbox sensor with ~12 years of battery, featuring ESP-NOW for subsecond transmission rates and MQTT. More info in comments : r/homeassistant](https://i.redd.it/dlha3athwk581.jpg)
DIY WiFi mailbox sensor with ~12 years of battery, featuring ESP-NOW for subsecond transmission rates and MQTT. More info in comments : r/homeassistant
![I recently finished the prototype for a battery powered ESP8266 based temperature and humidity sensor with eInk display. Currently working on a custom PCB. : r/arduino I recently finished the prototype for a battery powered ESP8266 based temperature and humidity sensor with eInk display. Currently working on a custom PCB. : r/arduino](https://i.redd.it/q0c5386r08p61.jpg)