What should you be aware of when charging purely electric vehicles?

Your selected combinations are correct because they reflect essential considerations when charging purely electric vehicles.

1. The charge time depends on the power supply: This is crucial as different power supplies can significantly affect how long it takes to charge a vehicle. Understanding this helps in planning longer trips and managing battery levels effectively.

2. Charging should only be performed with a charging cable approved by the manufacturer: This is vital for safety reasons. Using non-approved cables can lead to electrical malfunctions or even safety hazards. Adhering to manufacturer guidelines ensures that the vehicle is charged efficiently and safely.

The third option, "Charging is available at every filling station," is incorrect because not all filling stations are equipped to charge electric vehicles. It's important to know where charging stations are located, as their availability can vary.

Understanding these aspects is crucial for compliance with German traffic laws, ensuring the safe and effective use of electric vehicles on the road.