Add battery charger to ESP8266 and ESP32 (well done) - eMariete
ESP8266 Voltage Regulator For LiPo and Li-ion Batteries | Random Nerd Tutorials
How to reduce the ESP8266 power consumption?
Design your own ESP Board for Battery Powered IoT Applications
Battery Powered ESP8266 IoT - Temperature Sensor - Home Circuits
boost - NodeMCU power via battery + battery charger + booster - Electrical Engineering Stack Exchange
ESP8266 development board, Power supply AA batteries | GM electronic COM
Tom Horton | DiY IoT | Building a Battery-operated ESP8266 Sensor Module
Tom Horton | DiY IoT | Building a Battery-operated ESP8266 Sensor Module
IoT based Battery Monitoring System using NodeMCU and ThingSpeak
Power Supply board for NodeMCU ESP8266 | The IOT Projects
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
Battery Powered ESP8266 IoT - Temperature Sensor - Home Circuits
ESP8266 Voltage Regulator For LiPo and Li-ion Batteries | Random Nerd Tutorials
Seven Pro Tips for ESP8266 : 9 Steps (with Pictures) - Instructables
ESP8266: Monitoring Power Consumption • ThingPulse
Seven Pro Tips for ESP8266 : 9 Steps (with Pictures) - Instructables