Mayoki Air Compressor for Pneumatic Brad Nailer Stapler, Compatible with Dewalt 20V Battery(Tool Only), 120 PSI Oil Free Cordless Portable Compressor, 160PSI Digital Tire Inflator for Pickup, Tire

I threw the Mayoki cordless compressor in my truck for a few weeks of real-world use—topping off tires, running an 18-gauge brad nailer, and handling the usual household inflatables. It’s a compact, oil-free unit that runs on Dewalt 20V batteries (battery not included) and promises two personalities: a 160 PSI tire inflator and a 120 PSI mini-compressor for pneumatic tools. On paper, that sounds ambitious. In practice, it’s surprisingly capable, with a few quirks worth knowing before you buy.

Setup and controls

Getting started is straightforward. Slide in a Dewalt 20V battery, connect either the short integrated hose for inflating or the included high-pressure hose for tools, and power up. The digital interface is simple and useful. You can switch among PSI, BAR, kPa, and kg/cm², set a target pressure, and let the auto shut-off stop the pump right on cue. The display is bright, easy to read, and the memory function recalls your last setting—handy if you’re consistently aiming for, say, 38 PSI on a daily driver. The built-in LED work light is more than a token feature—it’s genuinely bright enough to make nighttime tire checks less of a hassle.

Low-voltage protection is built in, which I appreciate; it’s easy to beat up batteries with high draw tools when you’re distracted by the task at hand. Here, the tool looks after itself and your battery.

Tire inflation performance

As an inflator, the Mayoki holds its own. On a mid-size SUV with 265-series tires, bringing a tire from 32 PSI to 38 PSI took a few minutes—about what I expect from a compact cordless unit. For passenger-car tires and bikes, it feels quick. The auto shut-off consistently stopped within roughly a pound of my target when I cross-checked with a separate gauge.

The included accessory kit covers the typical bases: ball needle, air nozzle, and tire valve adapter. The tire chuck seals reliably, and the heat-resistant hose keeps its composure even after longer inflation cycles. One tip: set your target a hair above your number (1 PSI or so) to account for the momentary loss you’ll get when disconnecting from the valve stem, especially on larger tires.

The unit isn’t whisper-quiet. It’s about as loud as other compact compressors—conversation is still doable, but you’ll be aware it’s running. On balance, the noise level is acceptable for roadside or driveway use, and vibration is controlled well enough that it doesn’t skitter across the pavement.

Pneumatic tool performance

The reason I was most curious about this compressor is the promise of running small air tools without dragging out a full-size compressor, hose reel, and extension cords. With a brad nailer (18-gauge), the Mayoki is legitimately useful for trim, punch-list tasks, and small repairs. You won’t be rapid-firing long strips of nails, but you can place a handful of fasteners in sequence and keep moving. Expect the compressor to cycle frequently; think “portable, targeted work” rather than “production speed.”

Hookup is via the included high-pressure hose with a quick-connect fitting. There’s an inline valve on the tool hose that you open to feed air to the tool. In practice, that means you’ll often use two hands—one on the tool, one managing air—and that’s where the shoulder strap is actually helpful. Throw the compressor over your shoulder and you can maintain control without the unit tugging itself around on the floor. Pressure recovery is quick enough for brad nailers and staplers; for tools that need continuous flow (die grinders, paint sprayers, high-consumption riveters), this isn’t the right solution.

On hardwood trim (oak), I had no trouble seating 2-inch brads cleanly. For intermittent fastening—installing a couple of returns, tacking beadboard, securing stops—it works. For long baseboard runs or crown where you’re shooting non-stop, a conventional compressor still wins on volume and speed.

Build quality and ergonomics

At 2.6 pounds (tool only), the Mayoki is genuinely portable. The molding and fittings feel solid for the class; it’s not a heavy-duty shop unit, but nothing on my sample felt flimsy. The included attachments stow in the base, which keeps small bits from disappearing into the abyss of a truck bin. The heat-resistant hose doesn’t soften uncomfortably under load, and the quick-connect for tools mates cleanly with standard fittings.

The built-in hose for inflating is on the short side. For tires, that means crouching near the wheel or placing the compressor on the ground close to the valve. A slightly longer integrated hose would add convenience. The tool hose is stiffer than I’d like, and while that’s common with high-pressure lines, it can nudge the unit around as you move—again, the shoulder strap helps tame this.

Battery life and runtime

Runtime will depend on the battery you use and the work you’re doing. With a 5.0Ah Dewalt battery, I had enough juice to top off four car tires and then do a small trim fix without hitting the low-voltage cutoff. Under heavy, continuous inflating or extended tool use, plan for a spare battery. The compressor doesn’t pretend to be a shop tank; it’s a small piston unit that keeps up impressively for its size but will ask for breathers if you push it. Letting it recover between sustained cycles will extend its service life and keep temperatures in check.

Usability details that matter

• Auto shut-off and memory: These two features significantly improve real-world use. Set it once for your vehicle and it’s one-button operation next time.
• LED work light: Bright enough to matter. If you get a slow leak after dark, you won’t be fumbling with a phone flashlight.
• Unit switching: PSI, BAR, kPa, and kg/cm² accommodate whichever standard you’re used to or what your tools specify.
• Accessory completeness: The kit has what most people need for sports gear, tires, and simple blow-off tasks. The quick-connect for tools means you can plug in a brad nailer or stapler without hunting for odd fittings.

Limitations and wish list

• Air volume: It’s the trade-off for portability. Great for brad nailers and staplers; not for high-CFM tools or continuous draw.
• Two-handed tool operation: The inline valve setup means you’ll often need a second hand to manage airflow. A locking valve or a slightly different manifold design would streamline tool use.
• Hose lengths: A longer integrated inflator hose would make tire work more comfortable, and a more flexible tool hose would reduce the tug you feel as you move around.
• Noise: Not loud enough to be a deal-breaker, but don’t expect “quiet mode.”

Warranty and value

A five-year warranty is generous for a tool in this category and speaks to confidence in the design. If you’re already on the Dewalt 20V battery platform, the tool-only format keeps cost down and simplifies charging logistics. The Mayoki strikes a smart balance for folks who need portability and versatility more than raw output.

Who it’s for

• DIYers and pros who want a compact, cordless inflator that can also run light pneumatic tools on a punch list.
• Tradespeople who work in finished spaces where dragging hoses and cords is more hassle than it’s worth.
• Drivers who want a reliable, battery-powered inflator in the trunk with enough muscle to handle truck/SUV tires.

Who should look elsewhere? If you routinely run air-hungry tools or need true rapid-fire nailing, a larger compressor with a real tank and higher CFM is still the right call.

Recommendation

I recommend the Mayoki compressor for anyone already invested in Dewalt 20V batteries who wants a portable inflator that moonlights as a small air supply for brad nailers and staplers. It’s easy to use, accurate, and genuinely handy in places where a full-size compressor would be overkill. Its limitations are predictable—air volume and hose ergonomics—not defects, and they’re outweighed by the convenience of cordless operation, a useful control set, and a strong warranty. Use it for what it was built to do, and it’s a very practical addition to a mobile tool kit or trunk.