CTYRZCH Dc-dc 250w Constant Current Boost Step-up Module Mobile Power Supply LED Driver MAX 10a 8.5-48v Input 12-50v Output Maximum power: 250W. Conversion efficiency: 95%. Small size: 70*36*13mm. (L*W*H) Input voltage: DC8.5V-48V; Output voltage: 10-50V continuously adjustable. (The default output 19V. 12-80V fixed output, for volume customers). Input current: 10A (MAX) exceeds 8A please enhance heat dissipationp; Output current: 10A MAX exceed 6A please enhance heat dissipation (input, output pressure related to the pressure the greater the output current is smaller)