Fast Inflation: The Cordless Tire Inflator Has A Powerful Motor That Allows It To Reach 150 Psi And Inflate A Car Tire (195/55/R15) From 25 Psi To 36 Psi In 4 Minutes. Portable And Easy To Carry: The Compact, Palm-Sized Electric Tire Pump Makes The Electric Tire Pump Easy To Carry In Your Bag Or Car. More Than A Tire Inflator: The Portable Air Pump Is Not Only A Tire Inflator Air Compressor, But Also Can Be Used As A Power Bank And Flashlight In Emergency. Built-In Battery: 2 X 2000 Rechargeable Li-Ion Batteries Mah, The Tire Compressor Can Work Continuously For 15-20 Minutes. Auto-Stop: Auto-Stop At Preset Pressure, Let You Easily Inflate Without Worrying About Over-Inflating Or Under-Inflating.