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Is the USB interface light of the Haval F7 always on?

1 Answers

JuliaLynn

07/30/25 6:50am

The USB interface light of the Haval F7 is normally not always on. The reason why the USB interface light of the Haval F7 stays on is that the car's power supply is not completely cut off. If the USB interface light stays on, restart the engine and then turn it off, and the power supply will be disconnected in about ten minutes. Function of the car USB interface: The USB interface in the car can be used to plug in a USB drive to listen to songs, charge mobile phones and MP3 players, serve as a USB car cigarette lighter interface, function as an interface for electronic dogs and dash cams, and charge computers and tablets. It utilizes the standard power supply in the car to charge DC to 5-volt electrical appliances via the USB interface or serves as a fixed power supply interface for electrical devices. USB working principle: The power supply inside the car converts DC to 12 volts or DC to 24 volts into DC to 5 volts, and then uses the unified USB interface to transfer the DC to 5-volt output to charge the corresponding electrical appliances. Since different electrical appliances have different power requirements, the power of the USB car charger also varies greatly, mainly differing in the current output of the USB car charger.

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