[36W Dual USB Fast Car Charging]. Dual QC3.0 USB port support, USB car charger fast charges two compatible devices at the same time at QC3.0 speed, 4 times faster than traditional charging. Dual ports with a total output of 36W and 18W/3A output per port can quickly charge iPhone 13 from 0% to 80% in 30 minutes and fully charge Samsung Galaxy S22 in 1 hour. High Quality Material and Design?The car charger is made of high and low temperature resistant material, which can be used in -20-60(?) working environment. Equipped with a colorful voltmeter, it can monitor the voltage value of your car battery in real time, so you can always know the power level of your car battery. The colorful LED light can also help you easily find the USB charging port of the car charger in a dark environment. Advanced Safety Protection? The USB fast car charger is UL, FCC, ROHS, EMC certified. Built-in smart chip provides overvoltage protection, short circuit prevention, prevents your phone from overcharging and overheating, ensures your mobile devices are charged at maximum speed, sophisticated protection measures to ensure the safety of you and your iPhone/iPad devices, escorting your charging safely. Widely Compatible?USB cigarette lighter adapter fast charger is compatible with almost all popular car models and all Android/iOS and other devices, such as Samsung Galaxy S22, Note 10/10+, iPhone 13/12/12 Mini/12 Pro/12 Pro Max/11/Pro/Max, iPhone X/ XS/XR/8s/SE, OnePlus, etc. ?How to use? Step 1: Press the switch lightly, the voltmeter LED and USB port work well. Step 2: Press the switch lightly, the voltmeter LED power is off. the USB interface is working fine. Step 3: Press and hold the switch for two seconds, the voltmeter and USB interface power off.