This type of trip is extremely energy-intensive for the GPS trackers Flashbird or Pegase Moto, here's the explanation:
Detecting a new trip, the tracker continuously communicates its position with the server, even when the vehicle's engine is not running. The vehicle's battery is not powered by the engine, and neither is the tracker.
The tracker, therefore, activates its battery disconnect to protect the vehicle's battery from discharging, and then switches to its internal battery. This allows for tracking the trip for a certain duration.
The duration of this tracking is variable and depends on the capacity of the vehicle's battery and the tracker model:
For Flashbird: You can expect several weeks of autonomy when stationary and several hundred kilometers while in motion without the engine running (in a truck or on a trailer).
For Pegase Moto: Expect a few days of autonomy when stationary and approximately a hundred kilometers when in motion without the engine running (in a truck or on a trailer)."