Vbat. Connection and port


Hello everyone
I have this fc:

Does anyone know how to connect vbat? I do not know which port is connected
Thank you


B+ on the board should go to the battery positive wire, B- to battery negative.
That’s an interesting FC, might have to get one of those.


Maybe I express badly, I want to know how to connect the battery, to which port UART, to enable the function “vbat” in betaflight and read me the battery voltage.
Thank you