Review on 🚀 TOPDC Dual Cylinder Air Compressor – Heavy Duty Metal Tire Inflator - Portable Digital Tire Pump - 12V DC 100PSI with Battery Clamp and 2M Extension Air Hose - for Car Tires, SUV, Truck, Bike, Air Bed, Basketball by Jesus Gallagher

Advertised as fast filling and convenient. It is neither one nor the other. The video I've included here shows the R18 tire being inflated from 40 to 46.5psi - it blows above the 45psi I set. The auto shut off never worked on two gas generators. The light is also incredibly dim, which is also demonstrated in the video. You need to turn it off and let it cool down every 15 minutes. Any off-road tire will go flat in 15+ minutes. Any large pool toy or air mattress cannot be inflated in 15 minutes. It is NOT convenient to open the hood and connect directly to the car battery terminals and then run the car while the inflator is running. The cigarette lighter option didn't work on any of my 3 cars, from passenger cars to large SUVs. It must be connected directly to the car battery for proper operation. Yes it's fine for emergencies but if you want to inflate a flat tire or inflate all four tires or inflate a large inflatable pool toy it will take some 30 minutes. Cool down" breaks between 15 minutes of work. Bike tires are fine - anything with a low volume goes through quickly. But high-volume inflatables are unrealistic. The auto-off function didn't work on my first one (there were other problems), and also didn't work when swapped out auto shut off WHAT IT'S GOOD FOR: Airing multiple bike tires next to your vehicle This is great for low volume tires Quiet and gets the job done quickly - small exception - you have to SCREW the tube every time, no quick connect lever like others Pumping This also causes air to leak out when you put the tire on and off, so you have to inflate the tire properly to get the pressure you want, it's not that hard.