Key Features
Fast Tire Top-OffsThis inflator is built to top off 33 inch light truck tires in under 1 minute, so you spend less time waiting on the side of the road or in the yard. Set It, Let It StopTrueFill technology checks pressure as it stabilizes, then fills to your target PSI and shuts off automatically to help prevent overinflation. M18 Platform FitThe Milwaukee M18 18V Cordless Tire Inflator works with all M18 batteries, which makes it a smart bare-tool pickup if you are already on the Milwaukee cordless platform.
Overview
The Milwaukee M18 18V Cordless Tire Inflator, Model 2848-20, is a battery-powered tire inflator built for fast, accurate inflation without dragging around a cord or hunting for an air source. This is a tire inflator designed for inflating passenger, light truck, and other medium-duty tires. If you already run Milwaukee M18 batteries, this bare tool gives you a portable way to top off vehicle tires, trailer tires, and jobsite equipment with less setup and less guesswork.
What makes this unit matter is speed combined with control. Milwaukee rates it as their fastest 18V cordless tire inflator, and it is built to top off 33 inch light truck tires in under 1 minute. That matters when you are dealing with work trucks, fleet vehicles, or repeated tire service and do not want to stand there babysitting an inflator. It is also rated for a maximum of 150 PSI, so it has the pressure range for common vehicle inflation tasks and higher-pressure applications beyond a basic emergency inflator.
The big practical feature here is TrueFill technology. Instead of simply running until a timer or rough target is reached, it checks the pressure after the system stabilizes and continues filling until the selected PSI is achieved. There is also automatic shut-off at the chosen pressure. In plain terms, that means you can dial in the number you want, let the tool do its job, and avoid overshooting pressure on routine top-offs. For anyone maintaining several vehicles, that is a real time-saver and it gives more consistent results.
Milwaukee also got the everyday details right. The inflator has four PSI memory slots so you can save common pressure settings instead of punching them in every time. If you regularly move between a pickup, a trailer, and a passenger vehicle, that feature earns its keep fast. The 36 inch hose gives you enough reach to work around tire position without constantly repositioning the tool, and the on-board hose and nozzle storage helps keep the setup together instead of turning the accessories into loose pieces rolling around in the truck.
From a design standpoint, this is clearly meant to travel. The compact body, carry handle, and cordless M18 format make it easy to grab for roadside work, mobile service, or general shop use. Milwaukee also includes anti-vibration feet to help minimize tool walk while running. That sounds small until you have used cheaper inflators that creep across pavement or shake around while filling. The all-brass Schrader chuck also matters because it is one of those contact points that gets used every single time.
As a bare tool, the Milwaukee M18 18V Cordless Tire Inflator fits all Milwaukee M18 batteries. That makes it especially appealing for contractors, fleet maintenance crews, and homeowners who already own M18 packs and chargers. It also comes with an inflation needle, inflator nozzle, and Presta chuck, so it is not limited to standard Schrader tire valves. That gives it more flexibility for bikes, sports gear, and general inflation tasks, even though its sweet spot is clearly vehicle tires.
Who should buy it? If you want a compact cordless inflator mainly for passenger vehicles, light trucks, trailers, and medium-duty tire work, this one makes a strong case. It is a better fit for users who value portability, repeatable PSI settings, and fast top-offs than for someone who already has a full-time shop compressor sitting ten feet away. For mobile use, roadside service, and anyone invested in the M18 system, it is the kind of tool that quickly goes from “nice to have” to “why didn’t I buy this sooner?”
Built to Go Where the Vehicle Is
This is the advantage of a cordless inflator done right: you bring the tool to the truck instead of bringing the truck to the shop. For roadside top-offs, jobsite vehicles, or equipment parked out in the yard, that portability is the whole point.
- Powered by the Milwaukee M18 battery system
- Optimized for passenger, light truck, and medium-duty tires
Dial In the PSI and Walk Away
The digital controls are there for more than looks. Between TrueFill technology, automatic shut-off, and memory presets, this inflator is built to hit the target pressure without the usual stop-start guessing.
- Auto pressure check helps ensure the selected PSI is actually reached
- Stores up to 4 PSI presets for vehicles or repeat inflation tasks
Compact Storage, Ready-to-Use Setup
Small details decide whether a tool gets used or left in the garage. On-board storage for the hose and accessories keeps the setup together, and the 36 inch hose gives you enough reach to work around the tire without fighting the tool.
- Includes a 36 inch hose with all-brass Schrader chuck
- On-board storage helps keep hose and nozzles from getting lost
What’s in the Box
- (1) Milwaukee M18 Inflator
- (1) Inflation Needle
- (1) Inflator Nozzle
- (1) Presta Chuck
Battery and charger are not included.
Key Specifications
| Battery System | M18 |
|---|---|
| Voltage (V) | 18V |
| Power Source | Cordless |
| Maximum Pressure (PSI) | 150 PSI |
| Hose Length (in) | 36 in |
| Length (in) | 13.8 in |
| Height (in) | 7.8 in |
| Weight (lbs) | 7.0 lbs |
Compatibility
Battery Platform Fits all Milwaukee M18 batteries. Valve and Inflation Accessories Includes an all-brass Schrader chuck plus a Presta chuck, inflation needle, and inflator nozzle for broader inflation use.
Built For
Fleet MaintenanceAutomotiveGeneral ContractingRoadside Tire Top-OffsPassenger VehiclesLight TrucksTrailersDIY / Hobbyist
Pro Tip
Use the four PSI memory slots for the vehicles you inflate most often, then leave the right setting saved for each one. It turns routine tire checks into a grab-it-and-go job instead of resetting pressure every time.
Warranty & Support
5 Year Limited Warranty.
Tool Nut’s Take
Tool Nut’s Take
Milwaukee M18 18V Cordless Tire Inflator That Actually Earns Truck Space
The Milwaukee M18 18V Cordless Tire Inflator is one of those tools that makes a lot of sense the first time you need fast, accurate air away from a compressor.
- Who it’s for: M18 users, truck owners, fleet crews, and contractors who need a portable tire inflator for vehicle and trailer maintenance.
- Why it stands out: The mix of fast inflation, 150 PSI capacity, automatic shut-off, and TrueFill pressure checking puts it well above the cheap emergency inflator category.
- Worth knowing: This is a bare tool, so if you are not already on M18, add a battery and charger to the plan.
Common Questions
- What is the maximum pressure rating? The inflator is rated for a maximum of 150 PSI.
- Does it shut off automatically at the selected pressure? Yes. It has automatic shut-off to stop inflation at the chosen PSI and help prevent overinflation.
- Which battery platform does it use? It is part of the Milwaukee M18 system and fits all M18 batteries.
- What kinds of tires is it designed for? It is optimized for passenger, light truck, and other medium-duty tires.
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