【4 USB ports】The 4-port 12V USB adapter is automatically equipped with four charging ports, including QC3.0 [22W], PD [30W], Type-C [15W] and 3.1A USB 5V/3.1A, and can charge four devices at the same time. A multi-port car charger can meet the needs of your family. 【22W QC3.0 & 30W PD super fast charge】QC3.0 22W Max output power, 6 times faster than a 2.4A charger, charges the phone from 0 to 85% in 30 minutes. The PD port supports a maximum output power of 30W, four times faster than a traditional 2.4A car charger. When paired with a Pd fast charging cable, your phone can be charged to more than 60% in 30 minutes. The four charging ports are independent of each other, allowing all 4 devices to charge simultaneously at the fastest speed. 【LED Voltage Indicator】The cigarette lighter voltmeter automatically monitors the vehicle's battery and electrical system and displays the vehicle's voltage on the screen, you know the battery status when you are driving. The 12V USB socket is