PD3.0 Fast Charge: USB-C Power Delivery 3.0 port provides 30W of power for iPhone 12/Mini/Pro/Pro Max/11/Pro/Max, iPhone X/XS/XR/8/8 Plus/SE , iPad, AirPods, Galaxy S10+/S9+/S8+. From 0% to 50% at 3X speed in 30 minutes. (For iPhone quick charge: need to use USB C TO LIGHTNING cable.) Quick Charge 3.0 Port: Maximum output at 18W. Provides 4x faster charging speed to compatible devices. Capable of charging compatible devices up to 80% in just 35 minutes. Completely backwards compatible with all versions of Quick Charge. On/Off Switch This 12V USB outlet has an on/off switch, which can prevent current output, save energy. energy, preventing the battery from draining when idle. Also with LED voltmeter to monitor your car battery in time. Effective SecurityBuilt-in smart IC chip. Protect the device against overvoltage, overheating, overloading or short circuiting. It can intelligently detect the current required by devices and provide them with the best charging speed. Certified by UL, CE and FCC. Charge two devices simultaneously at high speed. Built-in smart IC chip which can intelligently detect the current required by devices and provide them with the best charging speed. Package includes: About wiring: This USB socket supports DC12V~24V input voltage, cannot be used as a power adapter at home. Connect the + to the positive pole of the power supply, and connect - to ground or the negative pole. For the vehicle, it is better to choose the power positive pole of ACC, than BATT+; For the motorcycle, it is better to get the power supply from the key switch