Wagan iOnBoost V8 Air has 4S battery technology generating 800 peak amps with a digitally controlled 150 PSI air compressor and USB QC 3.0 power port with a flashlight. The dual-screen displays show you the remaining device battery life (right screen) and the air compressor information (left screen). When you're ready to jump start a vehicle, the screen will display the vehicle battery voltage and jump starter readiness. The 150 PSI air compressor has a high flow rate of 20 liters per minute. With the ability to fill up 3 flat tires on a single charge and can cycled between PSI, BAR, and KG/CM³. iOnBoost V8 line has undergone extensive safety testing and has several safety features built-in to ensure your safety and the safety of your loved ones. Over-charge, Over/Under-Voltage, reverse polarity, and anti-sparking (short circuit) protections are all built in to the iOnBoost V8 Air to make sure that you and your family are able to use the device safely - even if you’re not mechanically inclined.