Thank you for your question.
You are correct. When low power mode is enabled, all sleep modes are deactivated and cannot be enabled.
Low power mode works something similar like online deep sleep mode. Below, you will find some power consumption statistics when the device is not searching for coordinates and not sending any data:
1. When low power mode is enabled and the device is moving, the consumption is approximately 7,2 mA.
2. When low power mode is enabled and the device is not moving, the consumption is similar to online deep sleep consumption - approximately 4,2 mA.
If we would look to the future - unfortunately, the combination of low power mode and ultra deep sleep mode is not planned to be implemented.
If you would like such feature to be developed, please contact your sales manager for more information about additional functionality development.