Wrong reading of battery consumption percentage

Once the motors are armed and turning correctly, I check the telemetry voltage and the percentage of battery consumption with the accelerator to the minimum, being the two values correct.
Once accelerating above 50%, the measurement of the voltage remains correct, but the percentage immediately rises to 100%, remaining in that situation until low to the minimum acceleration, at that time returns to indicate the percentage of battery consumption Right. How can I solve this measurement error?

I would ask in a firmware form or firmware Slack. QGC is just reporting the values sent to it from the Vehicle.