Daygreen Voltage Regulator DC DC 48V Step Down to DC 12V 20A Buck Converter 36V to 12V Reducer Non-Isolated

Wiring: OUTPUT+ to LOAD+, OUTPUT- to LOAD-; INPUT+ to BAT+, INPUT- to BAT- Reminder: Never connect to solar panel or wind turbine. Never charge the battery. Never reverse the polarity. Use the enough big cable to avoid the voltage drop. Keep good air convection. Daygreen P/N: B20-3648-12 Efficiency: 95% Input Voltage: 40-60VDC Output Voltage: 12VDC Output Current: 20A No-load current: <0.1V Ripple: 200mVp Line Regulation: ±0.2% Load Regulation: ±0.2% Voltage Accuracy: ±1.5% Enclosures: IP68 Dimension: 2.91*2.91*1.18 inch Net Weight: 0.573 lb Case Operating Temperature: -40-185?(When temperature is over 104?, you touch the case and will feel hot and this is very normal. When case temperature is over 185?, then converter protects.) Certificates: CE Rohs Warranty: 1 year MTBF: 100,000 hours Application: 36V/48V Lead acid/ lithium battery of vehicles as input power to 12VDC appliances as output load. Questions How to choose the correct current for loads? For example, if the max current of your load device is 10A, then choose 10A/0.8=12.5A at least for resistive loads according to international standard. If the load device is motor or compressor, then you may choose 10A/0.5=20A according to real testing result since the motor and compressor starting current may be 2-3 times than nominal current.