Hi, I’m encountering this issue on the Pixhawk 6c Mini where the battery voltage reading on QGC will randomly drop out and reconnect again mid flight. When on the ground, the battery voltage reading is accurate and consistently shows the battery percentage and voltage on the battery status tab on the main page of QGC so I believe it is not a wiring issue. This issue only surfaces randomly during flight (even during a simple hover) and resolves itself and I’m still able to continue on my flight, except for a few “Critical battery level, land now” warnings. Even when checking on the flight logs post-flight, there is no indication of any loss of data for voltage readings
It doesn’t seem like anyone else has surfaced this issue, but I was told that it might be a “voltage validity” issue where the Pixhawk 6C Mini will only consider the voltage to be valid if the power module outputs >5.05V to the Pixhawk. This is as compared to the Pixhawk 6C where it is only >3.9V. So in the case where there is a voltage drop, the Pixhawk 6C Mini might more easily assume that it is low on battery. I’m unable to find any information about any of this online though so I’m not sure if its an issue with the PX4 flight stack or the flight controller. However, it seems like this issue persists in v1.16.0
I will try to use a power module from CubePilot’s Power Brick Mini and see if that is able to produce a more stable voltage output to the flight controller
Flight Controller: Holybro Pixhawk 6C Mini
Power module: Holybro PM02v3
PX4 Version: V1.15.4
Flight logs do not show any abnormal voltage readings
Battery status during flight Battery status randomly drops out
Issue resolves itself