Please start the car engine first to increase power and avoid consuming the car battery power. This machine is limited to using direct current (DC12V) power supply and cannot use household high-voltage power supply. In order to maintain the good operation of the air compressor, its working time shall not exceed 10 minutes. If the compressor continues to operate for more than 10 minutes, it should be cooled for 10 minutes to avoid damaging the engine and parts. Please pay attention to inflation at any time and check the pressure gauge to avoid excessive pressure. Long-distance driving will inevitably cause changes in tire pressure. Failure to deal with them in time will lead to serious consequences...