Daygreen 12V to 48V 30A 1440W DC-DC Boost Converter - High Power Voltage Step Up Module for Solar Panels, Electric Vehicles, and Industrial Equipment

Wiring: INPUT+ to BAT+, INPUT- to BAT-, OUTPUT+ to LOAD+, OUTPUT- to LOAD- Reminder: Never reverse the polarity. Use the enough big cable to avoid the voltage drop. Never connect to solar panel or wind turbine. Never charge the battery. Keep good air convection. Daygreen P/N: A1U4830Efficiency: 95% Input Voltage: 11-16VDC Output Voltage: 48VDC Output Current: 30A Ripple: 400mVp Line Regulation: ±0.2% Load Regulation: ±0.2% Voltage Accuracy: ±1.5% Enclosures: IP68 Dimension: 220*130*50mm Net Weight: 2.2kg Case Operating Temperature: -40~85°C Certificates: CE Rohs Warranty: 3 years MTBF: 100,000 hours Application: 12V DC battery of vehicles as input power to 48VDC appliances as output load. How to choose the correct current for loads? For example, if the max current of your load device is 10A, then choose 10A/0.7=14.28A 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.