I would rather opt for the skinny 3.0 batteries - the ones coming with the Northern Tool deal come in the way when working in odd angles. But for anyone in need of an inflator, this is still the deal to get. Best inflator on the market. M12>M18 for topping off tires.
I disagree. The M12 inflator only excels at bike and mower tires, it’s barely adequate for topping off car tires and a joke when it comes to truck tires. Adding 3 psi fron 33 to 36 psi to the tires on my Bronco with the M12 took enough time that I could walk to the bench, grab a battery from the drawer, and set up a second M12 inflator on the next tire before it was done. The M18 does the same task in less than 10 seconds. Trying to top off a 3/4 ton from 65 to 80 psi with the M12 takes 8-9 minutes and consumes most of a 6.0 battery. I put up with the M12 before the M18 inflator was out, but now that the M18 is here I’ll never touch either of my M12 again.


