... You're not really helping. What's a 'normal' rechargable battery in this context (LiIon, NiMh, ...?) and what is the hardware on the ESP32 side? Devboard (and if so, which one), custom board, ...? Assuming something like a DevkitC and NiMh batteries, the 3.3V pin of those types of devboards is ...

ESP_Sprite wrote: ↑

Sun Mar 24, 2024 2:24 am

You need to be a bit more specific. What hardware are you using exactly, how have you connected it, what battery do you have connected?

Just 2 normal rechargeable battery in a battery holder connected to 3v3 and ground PINs

It looks like my ESP32 is charging the external battery when the ESP32 is also connected to USB-C power?