If you have already started the parking operation, do not worry because simply, you will not be able to notify the exit of the parking area when you leave the vehicle.
However, you will not be able to start more parking tickets in areas regulated with PARKUNLOAD until you partially charge the mobile's battery.
Charger inside the vehicle
It is highly recommended to have mobile power charger within the vehicle.
Parking notification within the vehicle
Remember that if you are less than 15 meters from the vertical parking road sign of a PARKUNLOAD parking zone, you can notify the start and end of the parking from inside the vehicle.
This enables the notification of operations with the smartphone connected to a vehicle power charger, without having to move outside the vehicle with the smartphone.