That is really weird!
An easy fix would be turning on the BAT Saver feature on the R7.
-BAT Saver-
If your R7 is plugged into a power source that is always on, turn this feature on. This way when you’re parked (stationary) or you’re in a parking garage (so you lose GPS), the detector will shut itself off after 1 hour so you don’t kill your car battery.
https://www.vortexradar.com/2019/04/...adar-detector/