DROKxae; DC/DC 8-50V 12V/24V/36V to 5V 3A Buck Converter Mini 5 Pin USB Male Adap. Input Voltage: DC 8-50V Output voltage: DC 5V Output Current: 3A MAX, 2.5A long-term work Output Power: 15W MAX Output ripple peak: 100; Conversion rate: 85%; waterproof