I think I have found the issue. According to the SAFT LS14500 AA batter datasheet Nominal voltage (at 0.2 mA + 20°C) 3.6 V which means current supplied nominal is 0.2mA and Pulse capability: Typically up to 250 mA While esp32 datasheet says minimum active state current required is 0.5A or 500mA whic...

Hi Esp_minatel, Thanks for your response. Link you have shared is very helpful to understand different ways of powering up the ESP32 thanks very much for that and much appreciated. I am back on it now. I have checked the datasheet of ESP32 WROOM 32D and the maximum voltage it can withstand is 3.6V w...

Hi I still have the issue.

I have Esp32Devkitc v4 which I am trying to run using external battery that is connected through a regulator to the Dev kit pin 3.3V and Ground. Esp32DevKitc v4 works ok with the usb power and wakes up from deepsleep mode when button on Pin 27 is presses (EXT0 source) but when I power board with bat...

Hi @felmue, Thank you very much for your response. Although, that is indeed helpful. But there is a way I came across not sure how it works using which device, whenever it wakes up using normal process such as in my case it wakes up when user presses the push button and then goes back to deep sleep ...

Hi I am trying to remotely (using wifi) wake up a ESP32 WROOM device ideally from deep sleep mode but can opt for light sleep mode if no option. After it wakes up I should be able to perform OTA (Over the air firmware update) using wifi. Can anyone please guide me if there is any example code or any...