Turn any 6-30V DC power source into a USB Fast Charger Output: 2x24W (5V 3.4A / 9V 2.5A / 12V 2A) per port 90-97% conversion efficiency depending on the voltage difference between input and output Supports multiple fast charging protocols: QC 2.0/3.0, BC 1.2, MTK PE1.1/PE2.0, AFC, SFCP 220kHz Switching Frequency Heat Dissipating PCB Over-voltage protection Under-voltage Protection Over-current Protection Short Circuit Protection Thermal Protection