The portable air pump has a built-in 6000 mAh battery. When fully, it allows for the inflation of 4 car tires from 0-35 PSI or approximately 12 times from 28-35 PSI. [Tire Inflator Cordless and Corded Design, Easy to Carry]: The portable air pump's new compact Cordless design with rechargeable batteries allows you to inflate any device without external power and annoying power cords. its compact size can easily fit in your car, bicycle rack, or backpack. The car tire inflation pump with a pressure gauge can accurately check your real-time tire pressure. You can see it clearly on its LCD display. Its preset tire pressure and auto shut-off function provide you with a worry-free inflation experience. It will automatically stop when the tire pressure reaches the preset value. No need to worry about over-inflation and use with confidence. This small portable tire inflator is embedded with a powerful 24-cylinder air pump which provides 150 PSI maximum pressure and 35.8 L/Min airflow. It can fully inflate car tires in 6 minutes (0-36PSI) or under everyday conditions (29-36PSI) in 1 minute. The tire Inflator portable air compressor's ultra-bright LED with 2 lighting modes (bright and flashing) makes your portable tire inflator suitable for roadside emergencies and nighttime use. When fully, the light lasts up to 7 hours and the LED is bright for less energy consumption. Carry case included!