There will be very few with both 110v and 12v. I use a Slime 12v that has been good and have seen others use the Ryobi mentioned with good results at autocross events. 110v won't do you any good for being self sufficient on the road. Mike
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I've used my Ryobi 18v inflator a few times, and so far, so good. They make two very similar models - one is high speed + low pressure, for toys and inflatable pools and such. The other is low speed + high pressure for tires. Just make sure you grab the right one.
It was an easy choice for me, since I already had the trimmer and a drill - the trimmer came with a battery, and the drill came with 2. So I have three batteries to pass around between the tools - works for me.
IMO, you might as well buy a tool that comes with one or more batteries rather than spending the money on a battery by itself. Better value that way, especially if there's a sale.
I have the Milwaukee 12 volt. compliments my other tools. I like the option to set a psi and the infiltator will run and automatically stop when it reaches it that psi
Plus one more vote for the Milwaukee, especially if you're looking to add tools around the house. I've got both M12 and M18 tools that have been awesome performers. For most of your around-the-house drilling needs, a little M12 drill would be more than enough.
The M12 inflator works great. Average noise level for this style of tool, as mentioned the auto-set pressure function works great. Pretty speedy, even topping up SUV tires.
If you just want a compact in case of emergency pump, I had a $20 antigravity batteries air pump that gets the job done. Noisier than the Milwaukee, but it takes up virtually no space in your car. It also has a power cable you can plug into your cigarette lighter and reach any of your tires so you don't need to worry about a battery. If you get one of their jump packs, you can plug directly into that and skip the long cable.
My all time favorite is my Powertank, but takes a lot of space. I've had both the Ryobi and the Milwaukee, and now have a Milwaukee Inflator in both vehicles. If you're already using Milwaukee 12V tools then that's an easy decision.
Amazon.com: Q Industries MF-1035 Inflator, 12 Volt Portable Air Compressor for Car Tires and Sport Balls, MF1035 by MasterFlow: Automotive
I've been using a Master Flow for 10 years. Have to plug it into the 12V cigarette lighter but has never let me down. Will probably look into a battery powered one once it goes.