1. Using high-quality materials, the quality is guaranteed 2. Fan blade heat dissipation is adopted, the heat dissipation effect is very good, and the output is higher 3. The temperature-controlled fan adopts hydraulic bearing fan, which has achieved a good balance in noise and heat dissipation. When the load is light, the fan does not turn. When the load temperature reaches about 60 degrees, the fan automatically rotates. Can effectively reduce noise and prolong service life 4. The main tube insulation board is made of high-quality alumina, and the thermal conductivity is 10 times that of ordinary insulation pads 5. Oversized ferrosilicon aluminum magnetic ring, using four 1.2 pure copper enameled wires, low calorific value and high efficiency.With current function, it can be used for car battery boost, battery charging, etc. Output : 1800W Input voltage range: 10V-60V Output voltage range: 12V-90V Input current: 40A Output current: 22A Conversion efficiency: 48V to 60V 8A (98.1 %) 48V to 72V 8A (98.1%) 48V 84V 8A (97.6%) Charge Regulation: 10% to 50% charge (72V output) Temperature coefficient: 50% load Ripple and Noise: 20MHz bandwidth (48V-72V 4A) 100mVp-p Switching frequency: VIN = 48V VO = 72V 4A (110khz) No-load current: VIN = 48V VO = 72V (18mA) Input reverse protection: yes Storage humidity: 95% Operating temperature: -20 65 C Storage temperature: -40 125 C Operating Temperature Rise: 48V to 60V 5A (45 C) Overheating Protection: 60C Wiring : input, output (solderless, terminal block). Cooling : strong cooling Colour:As shown Material:PC+Metal Package Contents: 1 x Boost Converter(1800w)(Due to different product batches, the appearance may be different, but thefunction is the same) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.