Yes, the fast charging charger can charge non fast charging mobile phones. Although the charging speed of a fast charging charger is faster than that of a regular charger, its basic principle of charging is the same as that of a regular charger, which charges the phone battery by outputting a certain voltage and current.
Although the output voltage and current of the fast charging charger are higher, it can adjust the output voltage and current to adapt to different devices, ensuring safety and stability. Therefore, if you use a fast charging charger to charge a non fast charging phone, it will automatically adjust the output voltage and current to meet the charging requirements of the phone and will not cause any harm to the phone.
However, it should be noted that when using a fast charging charger to charge non fast charging mobile phones, the output voltage and current of the charger may be larger than that of a regular charger, which may also have a certain impact on the battery life. Therefore, it is necessary to use it reasonably.






