Vantrue OnDash N1 Pro User Manual page 19

NOTE: To keep the camera working in parking mode, please keep
powering it with an extra power bank or hardwire it to the car battery
directly. Don't recommend to keep the camera working all the time
for over 10 hours.
4.8.2 Triggered by Collision Detection without External Power Supply
After activating the Parking Monitor, when the camera turns off, it will
turn on and end recording after 20 seconds once the camera detects
crash in front, and the videos will be locked in the ''Event'' file.
NOTE: Please ensure the battery of the dash cam is fully charged.
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