Max Load: 500W 500W Input: 120V 60Hz 120V 60Hz Output: 11.5V 23V Input Current: 4.2A 4.2A Open Circuit Current: 0.4A 0.4A Open Circuit Volts: 12.5V 25V Efficiency: 95% 95% Power Factor: 0.976 0.976 Max Load per Circuit: 250W 500W No. of Circuits: 2 1 Dimensions in inches: 7 H x 4.74 W x 4.35 D Weight: 12 lbs