Specifications: Model: A502 Brand: AUXITO Voltage: 11.1 Volts Recommended Uses For Product: Tire Inflation Power Source: Battery Powered/DC Powered Noise Level: ≤85 dB Features: [Lasting Power Tire Inflation] With a built-in 7,800mAh rechargeable battery to supply power and no need to connect to an external power source during use, the AUXITO A502 inflation speed is three times faster than other ordinary cordless inflation on the market, with a 35% increase in power. Providing 150 PSI maximum pressure and 40 L / min airflow, it inflates car tires (205/55 R16) in less than five minutes and e-bikes from 10 to 20 PSI in 30 seconds. [PD 30W Super Fast Charging] .