AB02 with battery - terminal output

how to check output in UART terminal while Cubecell connected to battery?
for example - I want to check the code which measure voltage on battery.
so I need power via battery and… how to use terminal without connection via USB?
because as stated here - Battery and usb connected at the same time? :

when you connect battery and USB - battery start to charge so it wont show the real voltage…

I have found the only solution is to have two modules and code the one running off battery to send it’s battery voltage over lora to the other conected to the PC.

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Using UART to serial port module, the pin diagram of AB02 is shown above