[Linked Image from i.imgur.com]

I use this on my girlfriend's car. Easy to attach to the battery. The wires and the tube are long, so you can easily work all 4 tires. The tube screws onto the valve stem, so you don't have to sit there and hold the nozzle onto the valve stem. Accurate pressure gauge is affixed to the unit, just stand there and watch it run it up to 42 psi and you are done. Highly recommended.

https://www.amazon.com/Viair-00088-88P-Portable-Compressor/dp/B005ASY23I