Turn any 6-30V DC power source into a USB Fast Charger Output: 5V 3.4A, 9V 2.5A, 12V 2A 90-97% conversion efficiency depending on the voltage difference between input and output Support multiple fast charging protocols: QC 2.0/3.0, BC 1.2, MTK PE1.1/PE2.0, AFC, SFCP Size: 37x20x10mm Orange USB Connector LED Power Indicator Cable Resistance Compensation Overvoltage protection Undervoltage Protection Overcurrent Protection Short Circuit Protection Thermal Protection