4 Port Car ChargerTECKNET USB car charger is equipped with 4 USB A ports that provides power for 4 devices at the same time. Perfectly avoiding the problem of who can use the car charger first. Best travel companion for your trip. Fast Charging USB A Maximum output up to 54W in total (QC3.0 18W output and USB 1/2/3 12W output at each port). QC3.0 port output 18W charges most of devices from 0% to 88% within 35 minutes, saving an average of 2 hours than normal charger. Support QC3.0/QC2.0/AFC/FCP protocol.