If you want something just to put a few psi into your tires, this is what I use.
https://www.lowes.com/pd/Kobalt-12-V...tor/1000092575
It's small, 120 psi and can set what psi to inflate your tires and it will shut off. I figured that when on the road I will just need to top off the tires and this handles it pretty well.