High performance:This battery air pump has a maximum pressure of 150 PSI. The powerful motor generates an air flow of 25 liters per minute. Inflates a car tire (195/55R15) from 0 to 2.48 bar in 4 minutes and 30 seconds and a racing bike tire (700x28C) from 0 to 120 PSI in 4 minutes and 13 seconds. Wide range of uses:This battery compressor comes with 4 accessories (Schrader valve, Presta valve, needle valve, air valves) and 4 pressure units (Psi, Bar, Kpa, Kg/Cm). By connecting the inflator to the tire, you can measure the tire pressure accurately. Intelligent inflation:You can set the desired tire pressure before use. When the preset pressure value is reached, the battery compressor will shut off automatically to avoid over-inflation. Easy to use:This electric The pump has a large display on which the values are easy to read, even at night or in sunlight. Besides, we put a flashlight on the top to have light for your night work. Large capacity battery:The electric bicycle pump has a built-in 4000mAh lithium battery and is charged via a Type-C port. When fully charged, it can fill 2.5 175/55R15 tires (0-36 PSI) / 7 700x28c tires (0-100 PSI) / 24 mountain bike tires (0-45PSI) / 10 motorcycle tires..Items from Sheng Xinshun's shop