During daylight hours, the battery will only last for a limited time, despite the fact that the electronic ignition/injection system requires a minimum current, as does the electric fuel pump. In addition, the battery is often only 2/3 charged.
And yet, depending on the capacity of the battery, the current will be enough for about a five-hour trip. In winter it is more difficult, because the battery does not react well to the cold. In addition, you need the light much earlier. Saving current is important:
- Do not stop driving without reason. The starter consumes especially a lot of energy. If possible, push the car.
- The rear window defroster, air blower and radio must not be turned on.
- Use glass cleaner sparingly if possible.
- At night, drive without high beams and fog lights.
- Unscrew the wires from the alternator and insulate them separately to prevent the battery from being discharged due to a faulty alternator or voltage regulator.