Xiao ESP32 C3 - Minimum battery voltage acceptable for the 5v pin ? ( battery is doing 3.7v...)

Products & Technology
#1

Good day guys,

Rechargeable 3.6V CR123 are as per Internet litterature not reliable as some of them provide 4.2V, other are 3.7V…

So I should connect it to the 5V pin not to fry the Xiao ( the one on the top side next to the ground and 3.3V, not the VIN one)

My issue : what is the minimum voltage in this 5V pin supposed to work at ?
Like if I put a 3.7v battery, it may go down quickly to 3.6V then to 3.5V.
If the 5v pin stops working at 3.6V then I am done :slight_smile:

Thank you

#2

The battery voltage is nominally 3.7V and 4.2V when fully charged. If you connect it to the battery pad on the back side of the XIAO, it will work fine.

1 Like
#3

Problem is the Vin is on the verso side…