Features Input voltage range 18V to 40V Stable output voltage 48V Maximum output current 30A 100 % burn-in test Efficiency up to 95% IP 65 Waterproof ( excluding terminals, LED lights ) , internal glue sealing , anti-vibration, dust-proof Self-cooling, easy installation 2 years warranty Over current protection: when the output current is higher than the set value, the output voltage gradually decreases until there is no output voltage. Over temperature protection: When the case temperature is 85 the power converter stops working, and there is no voltage output. Low voltage protection: When the input voltage is lower than the set value, the output voltage gradually decreases until there is no output voltage. Reference standards : EN 61000-6-3 2007/ A 1 2011/ AC 2012 EN 55014-1 2006/ A 2 2011 EN 60950-1 2006/ AC 2011 Wiring Definition OUTPUT Load positive GND battery negative / load negative INPUT battery positive Product Number FDE30-24S48 Efficiency up to 95% Input Voltage 18-40V DC Output Voltage 48V DC Maximum Output Current 30A Ripple 500mVp ( measured by 20M oscilloscope) Line Regulation Rate 1 % Load Regulation 1 % Voltage Accuracy 2 % Waterproof Level IP 65 (except output ports and indicator light) Dimension 180*127* 63mm Net Weight 2 kg Operating Temperature Warranty 2 years Above specifications are tested under the room temperature 25 ( derating is required for high temperature above 50 C ).