The following are some safety standards that car chargers usually need to meet:

1. Over-current protection: To prevent excessive current from causing damage to the equipment and the vehicle's circuitry.

2. Over-voltage protection: To avoid damage to the equipment or potential safety hazards due to too high input voltage.

3. Short-circuit protection: It can cut off the circuit in time when a short circuit occurs to prevent dangerous situations.

4. Temperature protection: Ensure that no problems will occur due to excessive temperature during operation.

5. Fireproof and flame-retardant: The materials should have certain fireproof and flame-retardant properties to reduce the risk of fire.

6. Electromagnetic compatibility (EMC): Reduce interference to other electronic systems in the vehicle, and at the same time be able to resist interference itself.

7. Structural strength: Ensure that it can work stably and reliably under the bumps and other conditions during vehicle driving.