12V/24V 36W QC3.0 Dual USB Car Charger Adapter, Waterproof Dual USB Ports with LED Digital Voltmeter Display for Motorcycles, Trucks, Boats and More

[Dual QC3.0 USB Ports] Two QC3.0 fast charging ports: 18W/3A and 4 times faster than conventional chargers. Backward compatible with Quick Charge 2.0 and 1.0. Suitable for all common USB devices. Note: The car charger draws a maximum of 30mA when the vehicle is off. [All-Metal Housing] Made of aluminum alloy with excellent heat dissipation. The charger is flame retardant, wear-resistant and extremely stable. It does not overheat even at high temperatures, making it safer than plastic. [Digital LED Display] With an LED display that shows the voltage status of the car battery in real time. Ideal for cars, boats, bicycles, SUVs, ATVs, RVs, caravans, motorcycles, etc. [Comprehensive Protection] The dual QC3.0 USB charging ports meet the highest safety and quality standards. It provides protection against overload, overvoltage, overcurrent, overheating and short circuit. [Easy Installation] The USB socket is very simple to install: the "+" connector is connected to the positive terminal and the "-" connector to the negative terminal. To save energy, it can also be connected to an on/off switch.