Universal Inverter 12V to 220V Modified Sine Wave Off Grid Voltage Transformer Power Converter Intelligent LCD Digital Display Note: This is a modified sine wave inverter, suitable for resistive load appliances, such as mobile phones, computers, TVs, digital cameras, video cameras, rice cookers, electric kettles, etc. Features: * Compatible with high-power electrical appliances, Modified Sine Wave full power without imaginary lines, 220V output compatible range. * USB output, 5V-1A/2.1A supports a variety of digital products. * Intelligent silent fan, intelligent silent temperature control, strong heat dissipation to reduce internal temperature, longer use. This * Equipped with pure copper wire core power cord, alligator clip wire + lighter wire, thick pure copper wire core, low power consumption, stable transmission. CAUTION: 1. Tighten the Positive (+) and Negative (-) terminals when the car converter is in use 2. If the converter is directly connected with the cigarette lighter. The highest out put power must be under 150W. If higher than 150W,we strongly recommend you using the Crocodile Clips to a battery ,because car cigarette lighter might not afford power over 150W. 3. The 12V inverter is suitable for 12V batteries, the 24V inverter is suitable for 24V batteries, and lead-acid batteries are recommended for the batteries. 4. Please do not leave the inverter in the ON position before car start. It's easy to damage the inverter before connected to the battery. The correct operation is connect to the battery first and then turn on the inverter switch. 5. It's normal for the inverter to become warm while you are using it. Please put the inverter on the flat surface The working place should keep dry, keep the inverter away from moisture or water. Do not put the inverter next to heat vents or other devices(between 0 Celsius degrees and 40 Celsius degrees). Try to keep the inverter not be shined directly by the sunshine. Battery Usage Time Calculation: 1)The working time of inverter, it is depend on the battery power and load power. 2)Formula: Working time (hours)= Battery Capacity X Battery Voltage X 0.8X0.9/Load Power 3) For example, the battery of 12V 60AH is supplied to a 220V 100W bulb. The working time is = 12(V) X 60(AH) X 0.8 X 0.9/100(W)=5.18(hours) (Note: 0.8 is battery discharge coefficient, 0.9 is inverter conversion efficiency) Specification: Name: Inverter Display: LCD digital display Peak power: 500W / 1200W / 1600W / 2200W Continuous power: 400W=500W, 600W=1200W, 800W=1600W, 1000W=2200W (Please make sure that the total rated power of the connected devices is ≤ Continuous power: 400W /600W / 800W/ 1000W) Output frequency: 50Hz Output voltage: 220V+5V-1A/2.1A USB Input voltage: 12V Size: 25.5x10x6.5cm Colour: Black Packing included: 1 * Inverter 1 * Alligator Clip Wire 1 * Cigarette Lighter Wire Note: 1. Please allow 1-3cm (0.4-1.18") difference due to manual measurement and slight color variation for different display setting. 2. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.