Wrong POWER tab errors

Using the “EXTERNAL” battery mode, we are experiencing a wrong error from QGC when we open the “POWER” tab:

Actually the driver for the external battery only needs the following few parameters to be set on the “POWER” tab
BAT1_SOURCE
BAT1_C_MULT
BAT1_N_CELLS
because all the other data are directly coming from the bus…

Everything else is working just fine, so is the error misleading us?