Specifications: - -Rated power: 1500W (Please make sure that the total rated power of the connected devices is ≤ 1500W) -Product size: 28.8X7.5X15cm -Maximum Active Surge Rating (less than 1 second) :10000W -6000W -Rated power: 3000W (Please make sure that the total rated power of the connected devices is ≤ 3000W) -Product size: 35.5X14X18cm -Maximum Active Surge Rating (less than 1 second) :6000W   -Rated power: 2500W (Please make sure that the total rated power of the connected devices is ≤ 2500W) -Product size: 31.5x14x18cm -Maximum Active Surge Rating (less than 1 second) :5000W -4000W -Rated power: 1800W (Please make sure that the total rated power of the connected devices is ≤ 1800W) -Product size: 27.7X15X7.5cm -Maximum Active Surge Rating (less than 1 second) :4000W -12000W -Rated power: 2000W (Please make sure that the total rated power of the connected devices is ≤ 2000W) -Product size: 30.5X15X7.5cm -Maximum Active Surge Rating (less than 1 second) :12000W Specifications: -Name: Pure sine wave power inverter - -Output voltage : AC 220V (210~230V) -Output frequency: 50Hz -Maximum AC Current per socket :8.33Ampere -Output Waveform: True/pure sine wave (3% THD) Efficiency: 90≥% -No Load Current Draw (DC side) 0.6 A -8 Safety Protection Function: Reverse polarity protection, Low input voltage protection, High input voltage protection, Over-current protection, Short circuit protection, Over temperature protection, Overload protection, Internal fuses 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 24V 60A 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) What Size Power Inverter Do I Need? The size you choose depends on the watts (or amps) of what you want to run (find the power consumption by referring to the specification plate on the appliance or tool). We recommend you buy a larger model than you think you'll need (at least 10% to 20% more than your largest load).   NOTE:(Pure Sine Wave Inverter suitable for sensitive load appliances, such as refrigerators, air conditioners, coffee machines, bread machines, induction cookers, etc.)   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 output 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 car converter suitable for DC12V and Car ONLY, not applied for DC 24V and airplane. 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.