Battery voltage monitor with NodeMCU Esp8266-12E WiFi module
ESP8266 Breakout Boards
lua - Check the battery status with NodeMCU? - Stack Overflow
ESP8266 Voltage Regulator (LiPo and Li-ion Batteries) - YouTube
One ESP8266, One Battery, One Year… And Counting. | Hackaday
ESP8266: Monitoring Power Consumption • ThingPulse
Tom Horton | DiY IoT | Building a Battery-operated ESP8266 Sensor Module
ESP8266 Voltage Regulator For LiPo and Li-ion Batteries | Random Nerd Tutorials
Esp8266 Esp32 Power Supply Rechargeable Dual 16340 Lithium Battery Charger Shield Module For Arduino R3 Board Power Bank - Instrument Parts & Accessories - AliExpress
How to reduce the ESP8266 power consumption?
Design your own ESP Board for Battery Powered & Low Power IoT Applications - YouTube
ESP8266 Thing Hookup Guide - SparkFun Learn
ESP8266 Thing Development Board Hookup Guide - SparkFun Learn
ESP8266 Wireless Dev System - Non-Battery Version from BurgessWorld Custom Electronics on Tindie