Aktronics® TP4056 Micro USB 5V 1A Lithium Battery Charger with DW01 Battery Protection IC for Arduino Raspberry Pi ESP8266 Robotics : Amazon.in: Computers & Accessories
TP4056 as UPS power source for esp8266 : r/arduino
Power ESP32/ESP8266 with Solar Panels and Battery | Random Nerd Tutorials
Powering ESP8266 with Li-ion and solar : r/esp8266
Solar Tp4056 and Wemos D1 mini - Project Guidance - Arduino Forum