A cordless wet/dry vacuum is the garage tool you reach for ten times a week: sawdust, spilled oil, car seats, flood water by the door. This guide compares six battery-powered wet/dry vacuums — four with verified purchase links and two strong alternatives — on tank size, suction, runtime and filters, from maker manuals and owner reports. It anchors our wet/dry vacuums coverage.
Short version: buy for your biggest mess, not your average one, and buy inside the battery platform you already own. No prices, no star ratings, no test-lab claims: just documented specs and what owners report.
How we researched this guide
We compared 6 cordless wet/dry vacuums — Milwaukee’s M18 FUEL 6-gal and PACKOUT 2.5-gal, the DeWalt DCV581H, Ryobi’s 18V ONE+ 6-gal, the Shop-Vac 1-gal cordless and Makita’s XCV11Z. Every figure comes from maker manuals and spec sheets plus retailer records, and from owner-report sets paraphrased and linked per product. Where a maker publishes no figure, tables print Not published.
Amazon links were verified model by model: four products carry their own listing (ASINs B0BLTCSMGB, B00DD1UQ3Y, B0D5J2V3JJ, B0CHMG4388); the other two ship with a written alternative and its button underneath. Carried honestly: the Ryobi model-number tangle in third-party reviews, and the Shop-Vac listing’s misprinted suction figure, printed as Not published.
The 30-second answer
Buy the Milwaukee M18 FUEL 6-Gallon (0910-20) for garage work — biggest tank and strongest published suction here. Pick the DeWalt DCV581H for cordless or corded power so a dead battery never ends the job. Ryobi’s 18V ONE+ 6-Gallon is the value play if you own ONE+ batteries. The Shop-Vac 1-Gallon Cordless is the grab-and-go compact for cars and spills. The Milwaukee PACKOUT 2.5-Gal (0970-20) and Makita XCV11Z have no verified Amazon listing — they ship with a written alternative and its button.
Top pick
Milwaukee M18 FUEL 6-Gallon Wet/Dry Vacuum
The biggest tank and strongest published suction here — 87 CFM and 60 inches of water lift per the operator’s manual — the garage answer when one pass must finish the job.
Dual power
DeWalt 20V MAX Cordless/Corded Wet-Dry Vacuum
The only dual-power pick — 20V MAX battery or AC outlet, so a dead battery never ends the job — 2 gallons, washable HEPA and 52 inches of sealed pressure in an 11 lb package.
ONE+ value
Ryobi 18V ONE+ 6-Gallon Wet/Dry Shop Vacuum
Six gallons on the ONE+ platform you may own — two speeds, blower port, foam-for-wet / HEPA-for-dry filtering, without a new battery system.
Compact
Shop-Vac 1-Gallon Cordless Wet/Dry Vac
The grab-and-go pick: a 3.4 lb cordless unit with its own battery and charger, wall mount and blower mode — for car interiors and spot spills, not whole garages.
PACKOUT
Milwaukee M18 FUEL PACKOUT 2.5-Gallon Wet/Dry Vacuum
The Milwaukee that clicks onto your PACKOUT stack: 50 CFM, 47 inches of water lift, certified HEPA — portability-first for service and car work.
No verified Amazon listing for the 0970-20 was found, so it ships without its own button. The verified alternative: the Milwaukee M18 FUEL 6-Gallon Wet/Dry Vacuum — this guide’s top pick — with its button:
HEPA dust
Makita 18V LXT 2-Gallon HEPA Wet/Dry Dust Extractor/Vacuum
The fine-dust specialist: true HEPA capturing 99.97% of 0.3-micron particles, a filter-cleaning system, up to 60 minutes of runtime — for drywall and sawdust workshops.
No verified Amazon listing for the XCV11Z was found, so it ships without its own button. The verified alternative in the same 2-gal class: the DeWalt DCV581H — with its button:
| Pick | Tank | Airflow | Filter | Check Price |
|---|---|---|---|---|
| Milwaukee M18 FUEL 6-Gal | 6 gal | 87 CFM | Cartridge | |
| DeWalt DCV581H | 2 gal | 31 CFM | Washable HEPA | |
| Ryobi ONE+ 6-Gal | 6 gal | Not published | Foam / cartridge | |
| Shop-Vac 1-Gal | 1 gal | 45 CFM* | Foam sleeve | |
| Milwaukee PACKOUT 2.5-Gal | 2.5 gal | 50 CFM | HEPA | Store only |
| Makita XCV11Z | 2 gal dust | 57 CFM | HEPA | Store only |
* Shop-Vac airflow is the listing’s blower-mode figure.
Vacuum finder: which pick fits your mess
Answer two questions. Every result recommends a pick from this guide, with its button.
Enter your biggest cleanup size, pick your platform, then press the button.
How to choose a cordless wet dry vacuum
Match tank size to your biggest mess
A 1-gal compact is a car-interior tool; it becomes a frustrating toy against a flooded garage corner. Size the tank to the worst single cleanup — the oil-pan spill, the water by the door, the truck bed — because an undersized tank means stopping to empty it three times per job.
Wet pickup needs the right filter
Most shop vacs swap filters by job: a foam sleeve for water, a dry cartridge or HEPA for dust. Liquid through a dry paper filter clogs it and can kill the motor — and on some units the wet sleeve is sold separately, so check the box before you need it.
Read suction two ways: CFM and water lift
Airflow (CFM) is how much debris the vacuum carries; water lift (inches) is how hard it pulls — out of crevices, up a hose, off a floor. Big CFM with weak lift feels strong on sawdust and useless on a puddle; want both figures, and distrust a listing that publishes neither.
Buy inside your battery platform
Four of the six picks are bare tools: useless without the brand’s packs and charger. Own DeWalt 20V MAX, Milwaukee M18, Ryobi ONE+ or Makita 18V LXT? The platform decision is made — and total-cost math changes completely versus buying a first battery system.
Runtime is a battery spec
Maker runtime figures assume a specific pack — usually the biggest. A 2.0Ah pack can halve the headline number, and max-power modes drink packs fast. Long sessions: budget for a second pack, or pick the dual-power unit here that falls back to AC.
Noise, storage and emptying decide if you use it
A vacuum buried in the garage never gets used. Check the weight, onboard hose/nozzle storage, whether it rolls or must be carried, and how the tank empties — a drain or wide mouth beats tipping a sloshing 6-gal drum over a floor drain.
Sizing notes
No vehicle data here: shop vacuums are sized by mess volume and battery platform — the finder does the sizing, the Quick compare table carries capacities. For vehicle-mounted gear with load math, see our winch sizing guides.
Best cordless wet dry vacuums by budget
| Tier | What you get | Example pick |
|---|---|---|
| Compact | 1-gal tank, battery + charger in the box, blower mode | Shop-Vac 1-gal cordless |
| Mid-range | 2-gal class, HEPA, dual power or your platform | DeWalt DCV581H · Makita XCV11Z (alt) |
| Big tank | 6-gal tank, strongest suction, bare tools | Milwaukee M18 FUEL 6-gal · Ryobi ONE+ 6-gal |
| Service portable | Small tank, PACKOUT mobility, longest warranty | Milwaukee PACKOUT 2.5-gal (alt) |
Cordless wet dry vacuum types compared
| Type | Pros | Cons | Best for |
|---|---|---|---|
| Cordless shop vac (bare tool) | Big tanks, strong suction, shared packs | Needs your packs; heavy | Platform owners with garages |
| Dual-power AC/DC | Never stranded on a dead pack | Smaller tanks | Anyone fearing a dead battery mid-job |
| Compact all-in-one | Lightest; battery + charger included | Small tank, short runtime | Cars and spot spills |
| HEPA dust extractor | True HEPA for fine dust | Small water capacity; rarely a verified listing | Woodworkers, remodelers |
Cordless wet dry vacuum reviews
Six vacuums, one per block, in award order. Specs come from maker manuals and spec sheets; where the maker is silent the tables say Not published. Owner reports are paraphrased from the linked review sets.
Top pick — best for garages and workshops: Milwaukee M18 FUEL 6-Gallon Wet/Dry Vacuum
Top pick
Why the Milwaukee M18 FUEL 6-Gallon Wet/Dry Vacuum is our pick
The manual publishes the strongest suction in this guide — 87 CFM and 60 inches of water lift — and the 6-gal tank means one emptying per session instead of three. Two power modes trade suction for runtime on a big HD pack; the only pick whose maker claims corded-class performance.
Milwaukee M18 FUEL 6-Gallon Wet/Dry Vacuum key specs
- Catalog number: 0910-20
- Power: M18 battery (tool only; battery and charger sold separately)
- Tank size: 6 gal
- Airflow: 87 CFM
- Water lift: 60 in H2O
- Filter: Large high-efficiency cartridge, quarter-turn access
- Hose: 1-7/8 in x 9 ft, crush- and twist-resistant
- Runtime: 31 min max-power / 47 min run-time on HD12.0 pack
- Weight: 26 lb
- Warranty: Not published in sources seen
- In the box: Vacuum, filter, 9 ft hose, AIR-TIP utility brush and nozzle
Milwaukee M18 FUEL 6-Gallon Wet/Dry Vacuum: fits and best for
Best for garages, workshops and jobsites where messes are measured in gallons. Fits M18 owners with HD packs — runtime assumes the big battery. Not a stairs tool.
Milwaukee M18 FUEL 6-Gallon Wet/Dry Vacuum pros and watch-outs
- Largest tank here (6 gal) — fewer trips to empty it
- Strongest published suction: 87 CFM and 60 in of water lift
- Two power modes stretch runtime on big batteries
- Crush- and twist-resistant 9 ft hose built for jobsite abuse
- Quarter-turn filter access — no tools to swap or clean the filter
- Heaviest unit here at 26 lb — plan its parking spot
- Tool only: no battery or charger in the box
- Foam filter for wet pickup is a separate purchase
- M18 battery drains fast in max-power mode — carry a spare HD pack
Milwaukee M18 FUEL 6-Gallon Wet/Dry Vacuum: what owners report
Milwaukee M18 FUEL 6-Gallon Wet/Dry Vacuum: who should not buy
If you carry a vacuum up stairs daily, this 26 lb unit is the wrong shape — the DeWalt or the Shop-Vac compact fit that life better. More options in the wet/dry vacuums archive.
Milwaukee M18 FUEL 6-Gallon Wet/Dry Vacuum: pair it with
A second M18 HIGH OUTPUT HD12.0 pack — runtime is the only real constraint.
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Tip: After a recovery day the truck bed holds mud and mulch; our best portable winch guide covers the pulling side.
Best dual-power — cordless or corded: DeWalt 20V MAX Cordless/Corded Wet-Dry Vacuum
Dual power
Why the DeWalt 20V MAX Cordless/Corded Wet-Dry Vacuum is our pick
It refuses to be stranded: 20V MAX pack, older 18V pack, or wall outlet. The washable, reusable Gore HEPA filter means no filter subscription, and 52 inches of sealed pressure is strong for a 2-gal unit. For mixed small jobs — service vans, punch-out work, home garages — the flexibility is the feature.
DeWalt 20V MAX Cordless/Corded Wet-Dry Vacuum key specs
- Model: DCV581H
- Power: 20V MAX battery (also accepts 18V packs) or AC outlet — tool only
- Tank size: 2 gal
- Airflow: 31 CFM
- Sealed pressure: 52 in of water lift
- Filter: Washable reusable Gore wet/dry HEPA (DCV5801H)
- Hose: 5 ft x 1-1/4 in heavy-duty crush-resistant
- Accessories: Crevice tool + wide nozzle
- Weight: 11.06 lb
- Size: 17.25 x 12.31 x 13.12 in
- Warranty: 3-year limited + 1-yr service + 90-day money-back
DeWalt 20V MAX Cordless/Corded Wet-Dry Vacuum: fits and best for
Best for mixed small-to-medium jobs: service vans, punch-out work, home garages, car interiors. Fits DeWalt 20V MAX (and 18V) owners; the AC option suits anyone avoiding batteries.
DeWalt 20V MAX Cordless/Corded Wet-Dry Vacuum pros and watch-outs
- Runs cordless or corded — the battery never strands you mid-job
- Washable, reusable Gore HEPA filter cuts running costs
- 52 in of sealed pressure — strong for a 2-gal class vacuum
- Onboard storage keeps hose, crevice tool and wide nozzle together
- 3-year limited warranty with a 90-day money-back window
- 2-gal tank fills fast on big garage messes
- Tool only — battery and charger are a separate purchase
- 31 CFM is modest next to the 6-gal class
- Buyers note the 5 ft hose can feel short on a full-size truck
DeWalt 20V MAX Cordless/Corded Wet-Dry Vacuum: what owners report
Owner feedback centers on portability: buyers run it off packs they own, call it fine for small garage and car jobs, and admit a big corded shop vac wins on raw volume. Source
Review coverage echoes the trade: corded-or-cordless versatility and the washable filter are the draw; cordless runtime is the limit. Source
DeWalt 20V MAX Cordless/Corded Wet-Dry Vacuum: who should not buy
If your cleanup is measured in wheelbarrows, the 2-gal tank will frustrate you — the Milwaukee 6-gal is built for that scale. More options in the wet/dry vacuums archive.
DeWalt 20V MAX Cordless/Corded Wet-Dry Vacuum: pair it with
A spare 20V MAX pack for jobs where no outlet is in reach — or plug into AC and save the packs.
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Tip: Same logic as 12V vehicle gear: buy the platform once — our best portable 12V winch guide applies it.
Best for ONE+ owners: Ryobi 18V ONE+ 6-Gallon Wet/Dry Shop Vacuum
ONE+ value
Why the Ryobi 18V ONE+ 6-Gallon Wet/Dry Shop Vacuum is our pick
If you own ONE+ batteries, nothing else gives you six gallons this cheaply — the value verdict from review coverage, not the power verdict. Two speeds, a foam sleeve for wet work, a blower port and all-terrain wheels cover the standard garage brief without a second battery system.
Ryobi 18V ONE+ 6-Gallon Wet/Dry Shop Vacuum key specs
- Model: 18V ONE+ 6-gal shop vacuum (UPC 659821528240)
- Power: 18V ONE+ battery (tool only)
- Tank size: 6 gal
- Speeds: 2 (low/high)
- Filter: Foam (wet) / standard or HEPA cartridge (dry)
- Hose: Approx. 7 ft (2.1 m)
- Blower: Blower port included
- Wheels: All-terrain wheels + casters
- Weight: 25.9 lb
- Size: 23 x 16 x 17 in
- Warranty: Not published in sources seen
Ryobi 18V ONE+ 6-Gallon Wet/Dry Shop Vacuum: fits and best for
Best for ONE+ households that want a full-size shop vacuum without a second battery platform. Fits garage floors and driveways; the all-terrain wheels assume flat-ish surfaces, — roll it rather than carry the 25.9 lb.
Ryobi 18V ONE+ 6-Gallon Wet/Dry Shop Vacuum pros and watch-outs
- 6-gal tank matches the Milwaukee on capacity
- Runs on any 18V ONE+ battery — huge if you already own the platform
- Two speeds let you trade suction for runtime
- Foam wet sleeve + dry cartridge covers both mess types
- All-terrain wheels and casters roll over garage floors easily
- Tool only — no battery or charger included
- 25.9 lb is heavy for a ‘portable’ shop vacuum
- No published CFM or water-lift figures to compare against
- The tight-sealing lid needs both locking levers seated or suction drops
Ryobi 18V ONE+ 6-Gallon Wet/Dry Shop Vacuum: what owners report
Press review coverage calls it a well-rounded vacuum that ‘tears through heavy bits’ and sits at the lower end of the price range for its class — a value verdict, not a power verdict. Source
Reviewers also praise the wheel setup — large side wheels plus front and rear casters — that keeps a full 6-gal tank from tipping while you drag it around the garage. Source
Ryobi 18V ONE+ 6-Gallon Wet/Dry Shop Vacuum: who should not buy
If you own zero Ryobi tools, the platform argument disappears — compare the DeWalt dual-power pick on equal footing instead. More options in the wet/dry vacuums archive.
Ryobi 18V ONE+ 6-Gallon Wet/Dry Shop Vacuum: pair it with
A 4Ah ONE+ pack — the size reviewers cite for the best runtime balance.
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Tip: Note the naming tangle: Ryobi’s 3-gal project vac shares similar model numbers in third-party reviews — buy the 6-gallon unit (UPC 659821528240).
Best compact cordless: Shop-Vac 1-Gallon Cordless Wet/Dry Vac
Compact
Why the Shop-Vac 1-Gallon Cordless Wet/Dry Vac is our pick
It arrives ready to work with nothing else to buy: rechargeable battery and charger in the box, a wall mount to keep it off the floor, and a blower mode for the patio. At 3.4 lb it is the vacuum you grab for ten-minute jobs a 26 lb shop vac would make you skip.
Shop-Vac 1-Gallon Cordless Wet/Dry Vac key specs
- Model: 1-gal cordless wet/dry vac
- Power: Built-in rechargeable battery; charger included
- Tank size: 1 gal
- Motor: 200W MAX
- Airflow: 45 CFM MAX (blower mode, listing)
- Filter: Foam sleeve + collection bag included
- Hose: 4 ft x 1.25 in
- Runtime: Up to 15 min continuous; 3-hr full charge (listing)
- Weight: 3.4 lb
- Size: 10.24 x 10.24 x 10.83 in
- Warranty: Not published in sources seen
Shop-Vac 1-Gallon Cordless Wet/Dry Vac: fits and best for
Best for car interiors, spot spills and quick patio blow-offs. Fits anyone with no battery platform — the rechargeable pack and charger are in the box. Not a garage-scale tool, not a flood tool.
Shop-Vac 1-Gallon Cordless Wet/Dry Vac pros and watch-outs
- Lightest pick here by far — 3.4 lb with battery
- Battery and charger included — no platform to buy into
- 3-in-1: wet, dry and blower in one small body
- Wall mount + tool holder keeps it off the garage floor
- 7 attachments in the box (hose, crevice tool, gulper nozzle, brush)
- 1-gal tank — strictly a spot-cleanup tool
- 15-minute runtime means one car interior per charge, roughly
- No published water-lift figure to compare against
- Small wheels/body — you carry it; it does not roll
Shop-Vac 1-Gallon Cordless Wet/Dry Vac: what owners report
Owner coverage for this listing is thin — only the Amazon product record was verified — so the points above come from the maker-published specification block, not from buyer reports. Amazon product listing
Shop-Vac 1-Gallon Cordless Wet/Dry Vac: who should not buy
If your messes are measured in gallons per weekend, skip this: it is a car-interior and spill tool, and the 2-gal DeWalt is the smallest real garage answer. More options in the wet/dry vacuums archive.
Shop-Vac 1-Gallon Cordless Wet/Dry Vac: pair it with
Nothing extra to buy — battery and charger already in the box.
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Tip: Hang it by the garage door: at 3.4 lb it is the vacuum you will reach for between big cleanups.
Best for PACKOUT system owners: Milwaukee M18 FUEL PACKOUT 2.5-Gallon Wet/Dry Vacuum
PACKOUT
Why the Milwaukee M18 FUEL PACKOUT 2.5-Gallon Wet/Dry Vacuum is our pick
It clicks onto the PACKOUT stack — the service-call vacuum: roll the stack to the truck, pop the vac off at the job. The 5-year limited tool warranty is the longest here, and the certified HEPA filter is washable. Owners name portability, not suction, as the reason they bought it.
Milwaukee M18 FUEL PACKOUT 2.5-Gallon Wet/Dry Vacuum key specs
- Model: 0970-20
- Power: M18 battery, tool only
- Tank size: 2.5 gal
- Airflow: 50 CFM
- Water lift: 47 in
- Filter: Certified HEPA, washable
- Hose: 6 ft flexible
- Runtime: 30 min high / 50+ low on HO 8.0
- Weight: 11.3 lb
- Size: 17.1×10.5×12.8 in
- Warranty: 5-year limited tool warranty (maker)
Milwaukee M18 FUEL PACKOUT 2.5-Gallon Wet/Dry Vacuum: fits and best for
Best for service technicians and PACKOUT owners who carry the vacuum to the work. Fits M18 owners who value mobility over tank size — 2.5 gal is car-and-callback capacity.
Milwaukee M18 FUEL PACKOUT 2.5-Gallon Wet/Dry Vacuum pros and watch-outs
- Clicks onto a PACKOUT stack — unmatched mobility for service work
- 50 CFM and 47 in of water lift — strong for 2.5 gal
- Certified, washable HEPA filter
- 5-year limited tool warranty — longest in this guide
- Power tool adapter included for dust extraction
- No verified Amazon listing — sold through tool retailers instead
- 2.5-gal tank means frequent empties on garage-scale messes
- Tool only — M18 battery and charger not included
- Suction noticeably weakens as the battery drains, per owners
Milwaukee M18 FUEL PACKOUT 2.5-Gallon Wet/Dry Vacuum: what owners report
Owners praise portability above all, but note suction fades as the pack drains — keep a spare M18 handy. Source
Upgraders from dead competitor vacuums call it quieter and better sealed at the attachments — a step up from the older 2-gal for car work. Source
The wishlist: a longer hose. Six feet works, but owners keep asking for more reach. Source
Milwaukee M18 FUEL PACKOUT 2.5-Gallon Wet/Dry Vacuum: who should not buy
Not on PACKOUT? You are paying for compatibility you will never use — the 6-gal sibling is the better Milwaukee. More options in the wet/dry vacuums archive.
Milwaukee M18 FUEL PACKOUT 2.5-Gallon Wet/Dry Vacuum: pair it with
A spare M18 HIGH OUTPUT pack — mobility and runtime are its currencies.
No verified Amazon listing for the 0970-20 was found, so it ships without its own button. The verified alternative: the Milwaukee M18 FUEL 6-Gallon Wet/Dry Vacuum — this guide’s top pick — with its button:
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Tip: Service calls: on the stack. Bench work: off it. That is the 0970-20’s whole point.
Best for fine dust and HEPA filtration: Makita 18V LXT 2-Gallon HEPA Wet/Dry Dust Extractor/Vacuum
HEPA dust
Why the Makita 18V LXT 2-Gallon HEPA Wet/Dry Dust Extractor/Vacuum is our pick
The fine-dust specialist: HEPA at 99.97% of 0.3 microns, a filter-cleaning system for consistent suction on drywall and sawdust, , 60 minutes on a 5.0Ah pack — longest here. At 10.1 lb, carry it to the dust.
Makita 18V LXT 2-Gallon HEPA Wet/Dry Dust Extractor/Vacuum key specs
- Model: XCV11Z (tool only); XCV11T kit
- Power: 18V LXT battery (tool only)
- Tank size: 2 gal dust / 1.2 gal water
- Airflow: 57 CFM high / 46 low
- Water lift: 27 in
- Filter: HEPA 99.97% @ 0.3 micron; filter-cleaning system
- Hose: Flexible, stretches ~2 ft to ~6 ft
- Runtime: Up to 60 min continuous on 5.0Ah (maker)
- Noise: 76 dB(A)
- Weight: 10.1 lb with battery
- Size: 16.5×9.875×11 in
- Warranty: 3-year limited (review coverage)
Makita 18V LXT 2-Gallon HEPA Wet/Dry Dust Extractor/Vacuum: fits and best for
Best for woodworkers and remodelers whose dust is fine — drywall, sawdust, concrete dust. Fits Makita 18V LXT owners; the 1.2-gal water capacity keeps it dry-first.
Makita 18V LXT 2-Gallon HEPA Wet/Dry Dust Extractor/Vacuum pros and watch-outs
- True HEPA filtration with a filter-cleaning system — the fine-dust leader
- Up to 60 minutes of runtime on a 5.0Ah pack
- Light and compact at 10.1 lb with battery
- Converts to a blower for clearing benches and patios
- Battery meter shows charge at a glance
- No verified Amazon listing — check Makita dealers
- Water capacity is only 1.2 gal — dry jobs are its home
- No extension wand in the box
- Shoulder strap is optional, not included
Makita 18V LXT 2-Gallon HEPA Wet/Dry Dust Extractor/Vacuum: what owners report
Makita 18V LXT 2-Gallon HEPA Wet/Dry Dust Extractor/Vacuum: who should not buy
Liquid-heavy work? The 1.2-gal water capacity is a dealbreaker — the DeWalt or Milwaukee handles water better. More options in the wet/dry vacuums archive.
Makita 18V LXT 2-Gallon HEPA Wet/Dry Dust Extractor/Vacuum: pair it with
A 5.0Ah LXT pack if you lack one — the 60-minute figure assumes it.
No verified Amazon listing for the XCV11Z was found, so it ships without its own button. The verified alternative in the same 2-gal class: the DeWalt DCV581H — with its button:
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Tip: Run the filter-cleaning cycle before it looks clogged — suction stays consistent longer on fine dust.
Spec comparison
| Spec | Milwaukee M18 FUEL 6-Gal | DeWalt DCV581H | Ryobi ONE+ 6-Gal |
|---|---|---|---|
| Tank size | 6 gal | 2 gal | 6 gal |
| Airflow | 87 CFM | 31 CFM | Not published |
| Water lift | 60 in H2O | Not published | Not published |
| Filter | Large high-efficiency cartridge, quarter-turn access | Washable reusable Gore wet/dry HEPA | Foam (wet) / standard or HEPA cartridge |
| Hose | 1-7/8 in x 9 ft, crush- and twist-resistant | 5 ft x 1-1/4 in heavy-duty crush-resistant | Approx. 7 ft (2.1 m) |
| Power | M18 battery | 20V MAX battery (also accepts 18V packs) or AC outle… | 18V ONE+ battery (tool only) |
| Runtime | 31 min max-power / 47 min run-time on HD12.0 pack | Not published | Not published |
| Weight | 26 lb | 11.06 lb | 25.9 lb |
| Warranty | Not published in sources seen | 3-year limited + 1-yr service + 90-day money-back | Not published in sources seen |
| Check Price |
| Spec | Shop-Vac 1-Gal | Milwaukee PACKOUT 2.5-Gal | Makita XCV11Z |
|---|---|---|---|
| Tank size | 1 gal | 2.5 gal | 2 gal dust / 1.2 gal water |
| Airflow | 45 CFM MAX (blower mode, listing) | 50 CFM | 57 CFM high / 46 low |
| Water lift | Not published | 47 in | 27 in |
| Filter | Foam sleeve + collection bag included | Certified HEPA, washable | HEPA 99.97% @ 0.3 micron; filter-cleaning system |
| Hose | 4 ft x 1.25 in | 6 ft flexible | Flexible, stretches ~2 ft to ~6 ft |
| Power | Built-in rechargeable battery; charger included | M18 battery, tool only | 18V LXT battery (tool only) |
| Runtime | Up to 15 min continuous; 3-hr full charge | 30 min high / 50+ low on HO 8.0 | Up to 60 min continuous on 5.0Ah (maker) |
| Weight | 3.4 lb | 11.3 lb | 10.1 lb with battery |
| Warranty | Not published in sources seen | 5-year limited tool warranty (maker) | 3-year limited (review coverage) |
| Check Price | Store only | Store only |
Scoring (editorial judgement, not test results): tank and published suction first, then filter, runtime, platform value and owner coverage. Milwaukee 6-gal 9.2 · PACKOUT 2.5-gal 8.8 · DeWalt 8.7 · Makita 8.5 · Ryobi 8.1 · Shop-Vac 7.4. No lab testing — a buying shorthand, not measurements.
Setup and battery basics
Unbox, charge the packs fully, and fit the correct filter before you start: foam sleeve for liquids, dry cartridge or HEPA for dust. Water through a dry filter clogs it fast — and on the Milwaukee 6-gal the wet foam sleeve is a separate purchase, so buy it before the flood. Keep the tank below the fill line on wet pickup. Empty and rinse after wet jobs — standing dirty water grows things you do not want to aerosolize. Store batteries at room temperature, off the charger once full. The wet/dry vacuums archive keeps every wet/dry option in one place.
One platform note: if your garage already runs on 12V vehicle gear, the battery-platform logic is the same — buy the system, not the tool. Charge spare packs before long sessions so a dead battery never ends the job. Our best portable 12V winch guide walks through that math for winches.
Safety essentials
- Never vacuum flammable liquids — gasoline, solvents, thinners. The motor can ignite vapors.
- Disconnect the battery (or unplug AC) before servicing.
- Fit the right filter. Dry paper filters plus water equals a clogged, damaged motor.
- Watch the fill line on wet pickup. Overfilled tanks can overflow into the motor housing.
- Keep vents and the exhaust clear. a blocked exhaust overheats the motor.
- Store dry, charge at room temperature.
Three accessories worth owning — no verified vacuum accessory listings were found, so these ship named, without buttons: a foam wet sleeve for liquids, fleece dust bags to extend filter life on fine dust, and a replacement HEPA cartridge so a clogged filter never ends a job. All three live in the wet/dry vacuums archive.
Troubleshooting
| Symptom | Likely cause | Fix |
|---|---|---|
| Vacuum will not start | Dead or unseated battery | Reseat a charged pack; try a second pack |
| Low suction | Clogged hose; full tank; dirty filter | Clear hose, empty tank, clean or replace filter |
| Liquid overflows during wet pickup | Tank past fill line; dry filter on wet work | Empty tank; fit foam wet sleeve before liquid jobs |
| Motor runs, no suction | Hose unseated; lid latches open | Reseat hose cuffs; close lid latches |
| Filter clogs fast on fine dust | Wrong filter for fine dust | Switch to HEPA; use fleece bags; run filter cleaning |
| Short runtime | Small pack; max-power mode | Use a bigger pack or low mode; use AC on the DeWalt |
Who should NOT buy these
Flood-basement owners should skip cordless for the big event: a 6-gal battery vac is a cleanup tool, not a pump, and a corded 10+ gal shop vac with a drain moves water all day without battery swaps.
Whole-house carpet cleaners are shopping the wrong category — these are shop tools with shop hoses; an upright or canister with a powered brush head cleans carpet faster and better.
Anyone vacuuming combustible dust or flammable vapors must stop: standard shop vacs are not rated for explosive atmospheres — gasoline or solvent spills need absorbent and ventilation, never a motor.
Battery skeptics with no platform should weigh the total cost: a bare tool plus two packs and a charger can double the headline number. The Shop-Vac 1-gal (battery included) or the DeWalt on AC are the honest no-platform answers here.
Final verdict
Top pick — best for garages and workshops — Milwaukee M18 FUEL 6-Gallon Wet/Dry Vacuum: Check its price
Best dual-power — cordless or corded — DeWalt 20V MAX Cordless/Corded Wet-Dry Vacuum: Check its price
Best for ONE+ owners — Ryobi 18V ONE+ 6-Gallon Wet/Dry Shop Vacuum: Check its price
Best compact cordless — Shop-Vac 1-Gallon Cordless Wet/Dry Vac: Check its price
Best for PACKOUT system owners — Milwaukee M18 FUEL PACKOUT 2.5-Gallon Wet/Dry Vacuum: no verified listing — see the written alternative with its button above.
Best for fine dust and HEPA filtration — Makita 18V LXT 2-Gallon HEPA Wet/Dry Dust Extractor/Vacuum: no verified listing — see the written alternative with its button above.
FAQ
What is the best cordless wet dry vacuum for a garage?
The Milwaukee M18 FUEL 6-Gallon (0910-20): 6-gal tank, strongest published suction here — 87 CFM and 60 inches of water lift per the manual. Buy bare-tool only with M18 batteries; otherwise budget for packs, a charger — or pick the dual-power DeWalt.
Can cordless wet dry vacuums really pick up water?
Yes — every pick handles liquids — but fit the foam wet sleeve first. Water through a dry paper or HEPA filter cartridge clogs it fast and can damage the motor. Note the Milwaukee 6-gal’s sleeve is sold separately; the Makita holds only 1.2 gallons of water.
How long does the battery last on a cordless shop vacuum?
Pack and mode decide: up to 47 minutes on the Milwaukee 6-gal with an HD12.0 pack, up to 60 minutes on the Makita XCV11Z with a 5.0Ah pack, about 15 minutes on the Shop-Vac 1-gal. Small packs and max-power modes cut those numbers hard — carry a spare.
Do I need a HEPA filter on a shop vacuum?
For fine dust — drywall, sawdust, concrete — yes. The DeWalt, Makita XCV11Z and Milwaukee PACKOUT 2.5-gal carry HEPA filtration (the Makita adds filter cleaning), keeping fine dust out of the exhaust. For puddles and chunky debris, a standard cartridge or foam sleeve is fine.
Can I use a cordless shop vac if I own no batteries?
The Shop-Vac 1-gal ships with its own rechargeable battery and charger. The DeWalt DCV581H also runs on a wall outlet — zero battery investment. The other four are bare tools: factor packs and a charger into the real cost. Charging the spare pack before a big job keeps the cleanup moving.
Cordless vs corded shop vac — which is better?
Cordless wins on mobility — no outlet hunting, no cord to trip over, and it rides in the truck. Corded wins on sustained power and unlimited runtime. The DeWalt DCV581H splits the difference — battery when you roam, AC when you park by an outlet.
What do CFM and water lift mean on a vacuum?
CFM is airflow — debris the vacuum carries. Water lift (inches) is suction strength — how hard it pulls a hose or out of a crevice. Big CFM with weak lift feels strong on sawdust and weak on puddles. Compare both, and distrust a listing that publishes neither.
Can I vacuum gasoline, solvents or other flammables?
No — never. Standard wet/dry vacuums are not rated for explosive atmospheres; the motor can ignite vapors. Handle spills with absorbent material and ventilation; keep the vacuum away until the area is clear. This is the guide’s most important safety rule.
Which battery platform should I choose for a shop vacuum?
The one you already own. DeWalt 20V MAX, Milwaukee M18, Ryobi ONE+ and Makita 18V LXT packs are not interchangeable — buying a first battery system just for a vacuum is the priciest way to buy one. Match the vacuum to your packs; compare tank and suction.
Sources & changelog
Maker and retailer sources:
1. DeWalt DCV581H product page — link
2. DeWalt DCV581H instruction manual — link
3. DeWalt DCV581H retailer spec record — link
4. Milwaukee 0970-20 product page — link
5. Milwaukee 0970-20 product PDF — link
6. Milwaukee 0910-20 operator’s manual — link
7. Milwaukee 0910-20 retailer spec record — link
8. Makita XCV11 spec sheet — link
9. Makita XCV11 retailer spec record — link
10. Ryobi 18V ONE+ 6-gal manual — link
11. Shop-Vac 1-gal cordless listing — link
Owner and review sources:
1. Milwaukee 0970-20 owner reviews — link
2. Milwaukee 0910-20 owner review notes — link
3. DeWalt DCV581H buyer feedback — link
4. DeWalt DCV581H review (autocleanfreak) — link
5. DeWalt DCV581H retailer notes — link
6. Ryobi wet/dry review (TechGearLab) — link
7. Makita XCV11 review (HomeFixated) — link
8. Makita wet/dry review roundup — link
9. Milwaukee 6-gal review roundup — link
10. StrongMocha wet/dry roundup — link
Changelog — October 24, 2026: guide first published.
By Leo, Founder, WinchInsider
Leo runs WinchInsider’s garage-equipment research: specs, manuals and owner reports, compared model by model.