Can bullet trains charge mobile phones?

[DeEmilio]

Bullet trains can charge mobile phones. On some older bullet train models, there is a charging socket at both ends of each carriage. New bullet trains: On some newer bullet train models, there is a charging socket under each row of seats. Additionally, the sockets in first-class seats are more densely arranged than those in second-class seats. Extended information: Car charging: Cars can charge mobile phones, mainly because cars have built-in batteries. Common car battery voltages are 12 volts and 24 volts. Precautions: When charging a mobile phone in a car, it is recommended to avoid the following time periods: first, before the car is started; second, the moment the car is started; and third, after the car has been turned off.