No battery information in QGroundControl with common PDB and 14S battery

Hello,
I wonder if someone can help me to get the PDB (Sky drones SmartAP PDB Power Distribution Board MBS-Z-139) connected to the ADS-B Carrier board (Cube Orange with Pixhawk ADS-B Carrier Board) and configured in that way, that the volatge and / or the current of an 60V 14S battery is recognized and shown in the QGroundControl user interface. We are using UAV RFD 868x Long Range Modem for data transfer.
At the moment it is not possible to get any battery information (i.e. voltage) in QGrondControl. The procedure described in the forums does not lead to success. What is the procedure for connecting and configuring the components described?
Thanks in advance, Martin