Why Does the Car Charger Get Hot?

[AuroraLee]

It is normal for a car charger to get hot. There is energy loss during the conversion between AC and DC power. Most chargers use highly efficient switching power supplies, but due to size limitations, they generally lack a PFC (Power Factor Correction) circuit, resulting in a power factor of less than 0.7. The remaining energy is mostly converted into heat. Precautions for an overheating charger: 1. Charge in a cool environment: If the car charger overheats, it is best to charge it in a cool place during summer, such as an air-conditioned room. This will prevent the charger from overheating. 2. Use the original charger: When charging your phone, always use the original charger to ensure stable output current and protect the battery. Original chargers may still get warm but will not overheat due to built-in protection mechanisms. If the charger overheats, it may be counterfeit or non-original. 3. Avoid using the phone while charging: Using the phone while charging can cause the charger to overheat, as it has to work longer than usual. This can damage the charger and reduce its lifespan.