VEVOR PCP Air Compressor, 4000PSI Portable PCP Compressor, 24V DC 110V/220V AC PCP Compressor Auto-stop, w/Built-in Adapter and Cooling Fan System

Can I use this to fill a full size scuba tank?

Is it 4,000 or 4,500.? Description reads 4,000. In the Questions and Answers, it was answered 4,500. Which is it.?

is for 24v or 12v ? the car battery are 12v

Can this unit be accurately set to 14psi?

What is the lowest pressure setting available? (I’d need to fill something to 15psi in addition to higher pressure fills)