12V to 29.4V 40A 1176W DC DC Step Up Converter 7S LiFePO4 Lithium Charger

Wide input voltage from 12.5V to 15V Work for appliances from 0AMP to 40AMP automatically Charge 24V lithium battery to 29.4V The charger works when the engine turns on only ( If you charge the auxiliary battery from the primary battery without vehicles, this charger can't work. And please inquiry us for another model. ) ACC enable (The charger is 100% off when the ACC turns off) 100% full rated power 100% full stable output current 100% burn-in test High-efficiency up to 96% Waterproof sealed Cooling by free air convection Surface mountable Over-current, over-voltage protections Over-temperature protection According to: EN 61000-6-3:2007/A1:2011/AC:2012 EN 55014-1:2006/A2:2011 EN 60950-1:2006/AC:2011 Notes: Converters cannot be used in parallel    Efficiency: 95% Input Voltage: 12.5-15V DC Output Voltage: 29.4V Output Current: 40A Ripple: 200mVp Line Regulation: ±0.2% Load Regulation: ±0.2% Voltage Accuracy:  ±1.5% Enclosures: IP68 Dimension: 220*130*50mm Net Weight: 2.2kg Operating T