In addition to the primary output, there is a charger output with a smaller rated current, enabling backup power supply applications for security access systems. With a rated efficiency of 86%, it can operate with air convection cooling in temperatures from -30 to 70 degress Celsius. Key protection features include over-temperature, over-voltage, battery low cut off, and battery reverse polarity protection (by fuse). Output Voltage: 13.8VDC Current: 2.8A/1.5A Power: 59.34W Ripple Voltage: 120mV p-p Input Voltage: 90-264VAC Input Frequency: 47-63Hz Inrush Current: 30A@115VAC, 60A@230VAC