Milwaukee 0880-20 18-Volt Cordless Wet/Dry Vacuum Review: The Portable Powerhouse That Delivers

When we first got our hands on the Milwaukee 0880-20 18-Volt Cordless Wet/Dry Vacuum, we weren’t expecting to be as impressed as we ultimately were. After putting this red powerhouse through its paces in multiple real-world scenarios—from workshop cleanups to vehicle detailing—we can confidently say this isn’t just another shop vac. It’s a game-changer for anyone who values mobility without sacrificing suction power.

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Why Milwaukee’s Cordless Design Makes All the Difference

The first thing that struck us during testing was the genuine freedom that comes with cordless operation. No more dragging extension cords across the garage or constantly searching for outlets. We tested the Milwaukee 0880-20 in our workshop, inside vehicles, and even outdoors on the patio, and the cordless functionality proved invaluable in every situation.

The vacuum runs on Milwaukee’s 18-Volt battery system, which many users (ourselves included) already have from other Milwaukee tools. This interchangeability is brilliant—we simply grabbed a charged battery from our drill, popped it in, and we were cleaning within seconds. For those new to the Milwaukee ecosystem, you’ll need to purchase the battery and charger separately, but trust us, it’s an investment that pays dividends across their entire tool lineup.

Suction Power That Rivals Corded Models

We’ll be honest—we were initially skeptical about a cordless vacuum’s ability to handle serious cleanup tasks. That skepticism evaporated within the first five minutes of use. During our testing, we threw everything at this vacuum: sawdust, drywall debris, screws, small bolts, water spills, and even wet leaves from a clogged gutter.

The suction power genuinely surprised us. Milwaukee rates it at 17 CFM (cubic feet per minute), and while that might not mean much on paper, in practice, it means this compact unit can handle jobs we typically reserved for our full-size shop vac. We found it particularly effective on fine dust particles, which many portable vacuums struggle with.

Real-World Performance: Our Hands-On Testing Results

During our comprehensive testing period, we used the Milwaukee 0880-20 for:

**Workshop cleanup**: After a weekend woodworking project, we vacuumed up approximately two gallons of sawdust and wood chips. The vacuum maintained consistent suction throughout, and the 2-gallon tank capacity meant we only had to empty it once.

**Vehicle detailing**: This is where the cordless design truly shines. We cleaned out three vehicles without any cord hassles, easily maneuvering around seats and into tight spaces. The included accessories made quick work of floor mats, upholstery, and those annoying crevices around the center console.

**Wet spills**: We intentionally spilled a half-gallon of water to test the wet vacuum capability. The Milwaukee handled it effortlessly, with no loss in suction or performance. The wet/dry functionality isn’t just a marketing claim—it genuinely works.

**Garage floor cleanup**: After an oil change, we used it to clean up absorbent material, dirt, and general garage grime. The 6-foot hose provided excellent reach without needing to constantly move the unit.

Battery Life: How Long Does It Really Last?

Battery runtime is always the elephant in the room with cordless tools. In our testing with a 3.0 Ah battery (not included), we consistently got between 15-20 minutes of continuous runtime, depending on the material being vacuumed. That might not sound like much, but consider this: how often do you actually vacuum continuously for 20 minutes?

For most quick cleanups—which is exactly what this vacuum excels at—15 minutes is plenty. We found that popping in a fresh battery took less than 10 seconds, so having a spare on hand essentially gives you unlimited runtime. With a 5.0 Ah battery, users report up to 30+ minutes of runtime, making it even more practical for extended jobs.

Design Features We Genuinely Appreciated

After weeks of regular use, certain design elements really stood out:

**The onboard storage**: Milwaukee thoughtfully included storage for accessories right on the vacuum body. No more hunting for that crevice tool or wondering where you put the nozzle. Everything clips securely to the unit.

**The drain plug**: Emptying wet debris is as simple as unscrewing the bottom drain plug. We tested this feature multiple times, and it’s far more convenient than tilting and pouring, especially when dealing with heavy, wet material.

**Tank design**: The 2-gallon tank is translucent, allowing you to see when it needs emptying. It might seem like a minor detail, but we appreciated not having to guess about capacity.

**Comfortable handle**: The top-mounted handle is well-positioned and comfortable to carry, even when the tank is full. The weight distribution feels balanced, which we noticed especially when carrying it up and down stairs.

**Rubber feet**: The vacuum sits on sturdy rubber feet that prevent it from sliding around in your truck bed or on smooth garage floors. It’s a small detail that shows Milwaukee thought through real-world usage.

What Comes in the Box (and What Doesn’t)

Let’s be clear about what you’re getting. The Milwaukee 0880-20 package includes:

– The vacuum unit
– 1-1/2″ x 6′ hose
– Utility nozzle
– Crevice tool
– Wet nozzle
– Filter (pre-installed)

What’s NOT included:

– 18V battery
– Battery charger

This is a bare tool offering, which means you’ll need to budget for a battery and charger if you don’t already own Milwaukee 18V tools. We recommend at least a 3.0 Ah battery for occasional use, or a 5.0 Ah battery if you plan to use it regularly for extended periods.

Customer Insights: What Other Users Are Experiencing

To validate our own findings, we dug deep into customer reviews for the Milwaukee 18V Cordless Wet Dry Vacuum 0880-20 Portable Shop Vac, and the feedback largely mirrors our experience.

The most commonly praised features include:

**Portability**: Countless users mention using this in their vehicles, boats, RVs, and workshops. One customer specifically noted it’s “perfect for cleaning out the truck bed after hauling materials,” which aligns perfectly with our own testing.

**Suction power**: The overwhelming consensus is that this little vacuum punches well above its weight class. Many users compare it favorably to their corded shop vacs for everyday tasks.

**Build quality**: Milwaukee’s reputation for durability comes through in the reviews. Users report years of reliable service, even in dusty, demanding job site conditions.

However, some criticisms appear consistently:

**Battery life concerns**: Some users wish the runtime was longer, particularly those tackling whole-house cleanups. As we noted, this is designed for quick, targeted cleaning rather than extended vacuuming sessions.

**Price point**: A few reviewers mention the cost, particularly when factoring in batteries and charger. Our take: if you value convenience and already own Milwaukee batteries, it’s absolutely worth it. If you’re starting from scratch, factor in the complete system cost.

**Filter maintenance**: Several users note that the filter requires frequent cleaning when dealing with fine dust. We experienced this too—keeping a spare filter on hand and cleaning the primary filter after dusty jobs helps