【PD20W & QC3.0 Fast Charging】This 5-port DC-DC cigarette lighter socket increases the number of sockets, allowing different devices to be used simultaneously, and the plugs will not fall out even with vibrations while driving. In addition, the dual cigarette lighter socket is equipped with QC3.0 charging ports (3.0A) * 2 + PD20 TYPE-C charging port, allowing multiple devices (iPhone, iPad, Mac, Android, Google, Huawei) to be fast-charged simultaneously. This solves the problem of insufficient USB ports in cigarette lighters. Even for devices that do not support QC, "random charging" will send the optimal current (5V / 2.4A). With a maximum output of 3.1A, charging time is significantly reduced. ▲Note: To achieve Quick Charge 3.0 fast charging, the charging cable/adapter and the device must support Quick Charge 3.0. 【Independent Switch & Safety Protection】This car charger cigarette lighter socket is equipped with NO/OFF power-saving switches with individual LED indicators, allowing you to reduce unnecessary power consumption with one touch. A fuse is built into the cigarette lighter socket. Moreover, two replacement fuses are included, so you can replace them if they break. It uses a smart chip that automatically adjusts the current according to the device being charged, fully protecting your device. It also has various protection functions such as overcurrent protection, overvoltage protection, overheating protection, and short circuit protection, and the exterior uses flame-retardant ABS+PC, so you can use it with peace of mind. 【Smart IC Chip for Automatic Voltage Detection】Measures and displays voltages from 9V to 30V, and the LED warning light flashes to notify you when it drops below 10.5V. ●【Warning Flash Function】The LED light flashes to warn you when the voltage drops below 10.5V. 【Wireless Design & Compact】Simply plug the car outlet adapter into your car's cigarette lighter and start using it easily. No extra wires are needed, and the rotating design keeps your car tidy and increases the charging efficiency of in-car devices. 【Compatible with 12-24V Cars & 180W Power Supply】The cigarette lighter charger supports a wide range of vehicles, from domestic cars to imported cars, trucks, and 24V large vehicles such as camping cars.