Voltire Portable Tire Inflators. Wireless Car Air Pump Portable Tire Digital Display Inflator. Power: 100W Air Pressure, Range: 3–150 PSI, Gas Flow: 40L/min, Trachea Length: 15cm, Material: ABS + Electronic Components. Battery Capacity: 3600mAh, Charging Time: 3–4 hours, Battery Life: 15–25 minutes (depending on usage).