boost - NodeMCU power via battery + battery charger + booster - Electrical Engineering Stack Exchange
ESP8266 Voltage Regulator For LiPo and Li-ion Batteries | Random Nerd Tutorials
Tom Horton | DiY IoT | Building a Battery-operated ESP8266 Sensor Module
Can i power this 'nodemcu esp8266 v3' using 7.4v or 8v power source in its microusb. actually i have two li-ion battery(3.7v) so , i am going to connect this battery in
Power Source to esp8266 : r/arduino
Will my circuit work? - General Electronics - Arduino Forum
Power Supply for NodeMCU with Battery Charger & Booster
Add battery charger to ESP8266 and ESP32 (well done) - eMariete