Thank you very much for the detailed response!
That confirms what I suspected — I’m actually using a bare Li-ion cell without built-in protection, so I’ll definitely need to handle undervoltage protection externally.
Do you know if there’s a small module I could connect between the battery and the VBAT pin on the XIAO ESP32-C6 that only handles undervoltage cutoff, without charging functionality?
I’ve seen TP4056-based modules with built-in protection, but since they also handle charging, I’m not sure it’s a good idea to connect them directly in this case — the XIAO already has its own charging circuit.
So ideally, I’m looking for a simple undervoltage protection board (e.g., one that cuts off below ~3V) that can safely sit between the battery and VBAT.
Thanks again for the help!