NodemCU 1.0 - ESP8266 Board Does not Boot Up After Low Battery

Hi All !

I have been working on solar powered ESP8266 project.

So far, i have estabilished to run ESP8266 with 6V solar panel and 3.7 V lipo battery.

I am ensure that, ESP8266 runs approximately 20 hours and i collected data.

But my problem is that, when the Battery drops to under 3v, esp8266 is powered off ( of course. )

After that, the battery is charged and rised until 3.8 volt and i am sure that ams1117 outputs 3.333 volts to power on ESP8266 again. However, i have to press the reset button to run the ESP8266, it does not boot up without manuel reset.

I couldn't understand the problem. As charger board i use TP4056 protected.

Do you have any suggestions ?

Help required.

Up up :slight_smile: