Enclosed AC-DC switching single output power source with battery charger (UPS Function). Universal AC input / Full range. Battery low protections. With power LED indicator and overloading protection, short-circuit and over voltage. DC voltage output: 13.8 VDC - 3.5 Amp current intensity. Battery Channel: 13.4 VDC - 0.23 Amp. Cooling by free air convection. Fixed switching frequency at 45 KHz. Output rated power: 51.38 W.