• Powerology 4-in-1 combines jump starter, air compressor, and power bank. • Jump starts vehicles with up to 5L gasoline or 3L diesel engines (800A peak current). • Inflates tires up to 150 PSI (±0.1 Bar accuracy) for cars, motorcycles, and bicycles. • 8800mAh battery with 20W PD output for charging smartphones and tablets. • LED display shows real-time pressure. • Built-in flashlight for nighttime use. • Compact design for easy storage in vehicle.