Cordless 8000mAh Battery and Corded DC 12V Dual Power SupplyThis portable air compressor is designed with both cordless and power modes. Cordless: Inflates about 10 car tires or 30 racing bike tires, fully charged in about 3 - 5 hours. The tire inflator also comes with a 10ft (approx. 10m) DC 12V power cord that plugs directly into your car's cigarette lighter in case the battery runs out. 150PSI RAPID INFLATORThis tire inflator can inflate tires quickly with a maximum pressure of 150 PSI and an airflow of 34 liters per minute, inflating tires 134% faster than other cordless inflators on the market. It can fully inflate tires in 40 seconds (30-36PSI) or in 5 minutes (0-36PSI). EASY-TO-USE AND PORTABLE DESIGNOne-button start of this tire inflator, 4 preset inflation modes (car, bike, motorcycle, ball), 4 pressure measurement units (PSI, KPA, BAR, KG/CM), and 1 manual mode. The compact design makes it easy to store in a car, bike rack or backpack, perfect for inflating while traveling or at home. [LED DIGITAL DISPLAY & AUTO SHUTOFFThe car tire air pump is equipped with a LED digital display, allowing you to read the real-time pressure value at a glance. The portable tire inflator automatically shuts off when it reaches the preset value to prevent over-inflation and remembers the last preset value to avoid repeated operation. All-in-One and ConvenientThe tire pump is equipped with a USB-C input port/USB-A output port, which can be used as an emergency power source for electronic devices. There is also an LED light on the top for easy use in the dark.