Similar to some posts yes but different?
My new DR970x-2ch LTE powers down with my truck, brand new so likely not a battery issue.
I have it wired into the (Batt+) cabin lighting and (ACC+) power socket fuses. Verified they stay powered at least for a while. The lights go out if the fuse is pulled so it is correct, and the lights stay on while the camera powers down after turning off engine.
Is there some adjustment to the settings to keep the camera on for a while? I don't need it on for hours, just on long enough for short stops and such.