An intelligent car charger with 2 USB ports supports the latest fast charging technology QC 3.0. It can charge with 30W power. The speed is compared to the power of chain charger. This car charger provides several levels of security, including before voltage surges, overheating, overcharging. Intelligent voltage management allows you to match voltage to a specific device. LED backlight makes it easier to locate the device when it's dark. High-quality material as aluminium alloy guarantees resistant to corrosion and abrasion. Specification: Material: Aluminum Ports: 2x USB (QC 3.0) Voltage (input): DC 12 - 24V Voltage (output): USB1 - 4.5V / 5A, 5V / 4.5A, 9V / 3A, 12V / 2.5A; USB2 - 4.5V / 5A, 5V / 4.5A, 9V / 3A, 12V / 2.5A; USB1 + USB2 - 5V / 5A (max) Additional features: LED backlight