This adapter features three cigarette lighter sockets with a total output of 80W. Each socket has an independent on/off switch to ensure safety and prevent repeated plugging and unplugging, while saving energy and protecting your devices. This is sufficient to charge GPS navigators, dashcams, car humidifiers, car fans, and various portable devices. QC3.0/PD Fast Charging: This QC 3.0+PD+dual USB car charger can charge up to four devices simultaneously. A built-in smart IC intelligently detects your devices and provides the fastest charging speed (Note: QC3.0/PD are fast charging interfaces). Main Power Switch and LED Voltage Monitor: The main power switch effectively extends the lifespan of the cigarette lighter adapter; the adapter plug with a digital LED voltage display monitors the car battery output, providing real-time information on the car battery status and preventing issues during driving. Replaceable Safety Fuse: This 12V/24V cigarette lighter splitter has a complete protection circuit and a unique chip with a built-in replaceable safety fuse to prevent overcurrent, overvoltage, overload, overheating, short circuits, and other damage to the splitter and your devices. Wide Applicability: This adapter comes with a 1-meter long power cable and a cigarette lighter plug for convenient charging for rear-seat passengers; it is suitable for most vehicle types, including crossovers, RVs, SUVs, trucks, minivans, and CDVs. It is compatible with most USB-powered devices such as laptops, cameras, AirPods, Samsung phones, and Android phones.