Voltage metering on Sodaq Sara AFF/SFF Rev3 with R412


My problem:
I want to metering the used voltage, and measurement wint measurent meter on Sodaq Sara AFF/SFF Rev3 with R412, but the device dont work correctly without battery (the r412 can’t connect and more).

How meteringt the current measurement accros usb or another way without load battery?

Thanks for your answere.

The R412 needs to have a battery plugged in to send messages. This is by design, because of the high current that the module may draw when in 2G mode.
The R410 based boards can run without a battery, directly powered from a USB port.