Optimal Use / Precautions: 1.Always make sure that the total rated power of the connected devices is 1000W. 2.Always tighten the Positive (+) and Negative (-) terminals when the inverter is in use otherwise a loose connection can overheat due to poor contact. 3.Avoid placing the inverter in a location that receives prolonged direct sunlight or near to heat sensitive materials as the inverter can become warm during use. 4.Converts DC power in your 12V batteries in your car,truck,boat or any other DC power sources into the AC power that home appliances,electronics and tools need. 5.If the rated input of any connected AC devices exceed 150W use the included battery clamps to directly connect to your vehicle battery as most vehicles 12V ports are rated and fused for 150W. Features: Ultimate Versatility It can be used for camping,outdoors,vacations,road trips,remote job sites,and even charging household items. The outlets can power a wide range of power-hungry items on the road.For maximum utility,stay in charge at all times and add this to your travel emergency kit. Replaceable Fuse Built-in replaceable 40A mini slip fuse to protect your devices,easy to replace.Provides safe charging under harsh surrondings and all seasons. Cooling Fan Cooling Fan is to keep the unit from overheating.The cooling fan is normally started at 1/3 of the rated power of the inverter.The conversion efficiency will rise after the cooling fan kicks on. Car Power Inverter Specifications: Weight: 1.85lb AC output: 110V Input: DC 12V/40A Size: 6.6 x 3.7 x 2.2 in No-load current: 0.4A USB output: DC 5V/2.1A Continuous output power: 1000W Surge output power(0.1 second): 2000W Package: 1 x User Manual 2 x Battery Clips 1 x Cigarette Lighter Plug 1 x Vehicle Power Inverter Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. .