my team is doing a university project, and we have just discovered, that if we unplug the USB cable and let the sensor tag run on its battery power, we get strange temperature and humidity values. For temperature, it is about -40 °C, for humidity about 10%. With cable, we get the right values. Only the humidity sensor is affected, pressure and lux are okay. We tried out multiple sensor tags and could replicate the problem. Do you have any idea what could be the reason for this behavior?