Hi Andrew,
This is great info, thanks for clarifying.
Unfortunately, our current product offerings do not support the "Pixhawk" style APM ADC inputs for current and voltage monitoring.
However, I would bet that you could find source code for an Arduino or STM project where these ADC values have been converted to appropriate PX4 I2C digital formats that you can then feed into our products. Keep in mind, the I2C bus needs to be at 5V and you should provide the I2C pullups on your converter module (anything from 10K to 4.7K works well for our I2C translator).
Thanks!
Vinny