To use the onboard wifi, you need to connect the device to a power source. Some onboard wifi devices need to use the vehicle's power interface to power the device through the on-board charger. In addition, an external power source such as a mobile power supply or battery pack can be used to provide power to the device. It should be noted that the use of onboard wifi must comply with local traffic regulations and cannot affect safe driving. At the same time, in order to ensure the safety and service life of the device, it is recommended to pay attention to the charging temperature and charging time during use to avoid device damage caused by overuse.