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Internet # 300510172

Model # 2771-20

Store SKU # 1002217920

Store SO SKU #1002149481

M18 18-Volt 1/4 HP Lithium-Ion Cordless Transfer Pump (Tool Only)

$249.00
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  • Industry’s first cordless transfer pump
  • Powerful pump moves water at up to 480 Gal. per hour
  • Part of the M18™ System of over 200 tools
  • View More Details
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Product Details

About This Product

The MILWAUKEE M18 Transfer Pump offers users faster water transfers and service calls. This portable water transfer pump is the industry's first cordless transfer pump, offering users the fastest setup. With an innovative self-priming pump, users can connect and go quicker than ever. The Milwaukee transfer pump's flexible impeller and powerful pump move water at up to 480 Gal. per hour, generates up to 18 ft. of lift and produces up to 75 ft. of head height. As a part of the M18 System, REDLITHIUM battery packs power the water transfer pump, which delivers up to 240 Gal. moved per charge on an XC5.0 battery pack. Onboard REDLINK Intelligence can recognize when the tool stops moving water and automatically shuts itself off to avoid dry pumping. REDLINK also provides optimized performance and overload protection in abusive situations.

Highlights

  • Self priming, connect and go
  • Detects when water flow stops and automatically shuts off
  • Ideal use: clean water
  • Run time: transfer up to 480 Gal. per hour on a single battery charge
  • Flow rate: 8 GPM
  • Portable design with water resistant battery cover
  • Part of the M18 system, featuring over 250+ tools
  • Includes: (1) M18 transfer pump( Tool Only- 2771-20 )
  • Battery and charger sold separately
  • Shop All Milwaukee Tools
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 300510172

Model # 2771-20

Store SKU # 1002217920

Store SO SKU #1002149481

Specifications

Dimensions: H 6 in, W 5.75 in, D 13.25 in

Dimensions

Product Depth (in.)

13.25 in

Product Height (in.)

6 in

Product Width (in.)

5.75 in

Details

Amperage (A)

0.0 A

Cord Length (ft.)

0 ft

Discharge Flow @ 0 ft. (gallons/hour)

8

Discharge Flow @ 0 ft. (gallons/min)

0.13

Discharge Flow @ 10 ft. (gallons/hour)

480

Discharge Flow @ 10 ft. (gallons/min)

8

Features

Corrosion Resistant, Portable, Self-Priming, Thermal Overload Protection

Head Pressure (ft.)

75

Housing Material

Other

Impeller Material

NBR

Included

No Additional Items Included

Inlet Connection

Threaded male

Maximum Discharge Flow (gallons/hour)

480

Maximum Horsepower (hp)

0

Maximum Pressure (PSI)

0 PSI

Maximum Working Temperature (F)

140

Minimum working temperature (F)

39

Outlet Connection

Threaded male

Power Type

Electric

Product Weight (lb.)

7.9 lb

Pump Switch Type

Electronic

Returnable

90-Day

Vertical Lift (ft.)

18

Voltage

18v

Warranty / Certifications

Certifications and Listings

UL Classified

Manufacturer Warranty

Warranty: 5 Year Tool

Questions & Answers

Would it be advisable to use this to pump out water from a toilet before removal? Toilet would be flushed many times so just tap water. I would also run fresh water from hose bibb afterwards to clean before storage. Wouldn't be used very often.
ByNov 12, 2025
0 Answer | 
Answer This Question

will it transfer glychol
ByOct 31, 2025
1 Answer | 
Answer This Question

Hey, Steven. The Milwaukee M18 18-Volt 1/4 HP Lithium-Ion Cordless Transfer Pump is designed and specified for clean water transfer applications.

By|Nov 5, 2025
    0/0


    This manual pump is good for oil?
    ByOct 23, 2025
    1 Answer | 
    Answer This Question

    The Milwaukee M18™ 1/4 HP Lithium-Ion Cordless Transfer Pump is primarily designed for water transfer applications. It features a flexible impeller and self-priming capabilities, making it ideal for moving water efficiently. Using it for oil could potentially damage the pump or reduce its lifespan due to the viscosity and chemical properties of oil.

    By|Oct 23, 2025
      0/0


      What is the power rating o n the motor
      ByOct 4, 2025
      1 Answer | 
      Answer This Question

      Hi, David. The M18 1/4 HP Lithium-Ion Cordless Transfer Pump is powered by the M18™ REDLITHIUM™ battery system and delivers up to 480 gallons per hour, with a maximum lift of 18 feet and head height of 75 feet. This performance is optimized by Milwaukee's REDLINK™ Intelligence for efficiency and protection.

      By|Oct 6, 2025
        0/0


        I need to pump out water from an old cistern which will be dirty or have solids, will I be able to use this and/or will i need a filter on the end of it?
        BySep 21, 2025
        1 Answer | 
        Answer This Question

        Hey, Colton. The M18 1/4 HP Lithium-Ion Cordless Transfer Pump is designed for transferring water efficiently, but it is primarily intended for clean water applications. Using it with dirty water or water containing solids may cause damage to the pump or reduce its performance.

        By|Sep 23, 2025
          0/0


          I usually use a garden hose to water my roof which is 12 ft heigh and the psi pressure on the garden shut off valve is 60 psi, which is enough to have water on the roof, but I need a little more pressure so I can finish my work faster, will this pump help
          BySep 19, 2025
          2 Answers | 
          Answer This Question

          Hi, Luis. Yes, the Milwaukee M18™ 1/4 HP Lithium-Ion Cordless Transfer Pump has enough pressure to water a 12-foot-high roof. This pump can produce a maximum head height of 75 feet, which means it can push water vertically up to that height. A 12-foot elevation is well within its capabilities.

          By|Sep 23, 2025
            0/0

            Get a pressure washer ..Will work better

            By|Oct 29, 2025
              0/0


              What is the PSI pressure it delivers ?
              BySep 19, 2025
              1 Answer | 
              Answer This Question

              Hey, Luis. The M18™ Transfer Pump delivers up to 75 feet of head height, which is equivalent to approximately 32.5 PSI of pressure. This is based on the standard conversion where 1 foot of head equals 0.433 PSI.

              By|Oct 13, 2025
                0/0

                (1)

                Can the pump handle gasoline?
                BySep 18, 2025
                1 Answer | 
                Answer This Question

                No, here is the statement from Milwaukees' User Manual. Do not pump flammable or explosive fluids such as gasoline, fuel oil, kerosene, etc. Do not use in a flammable and/or explosive atmosphere. Personal injury and/or death could result. MIke

                By|Oct 17, 2025
                0/0

                (1)

                Viewing 1-8 of 172

                Customer Reviews

                4.6 out of 5

                • 4.6 out of 753 reviews
                • 90% recommend this product
                Filter by:
                Showing 1-10 of 753 reviews
                Bad switch
                On/off switch fails to work Had it in for service and the apparently replaced it 3 months ago and now does not work again
                by
                Response from Customer CareJun 3, 2025
                Hey, we're sorry to hear that your M18™ Transfer Pump is not operating properly again. We will reach out to your email and assist with this situation! - Milwaukee Tool, Social Team
                  • Recommended
                  BEWARE MILWAUKEE WILL NOT STAND BEHIND THIS PUMP!
                  BEWARE!!! Milwaukee does not stand behind this product. The warranty on these pumps will always get denied because they make claims as the pump was overloaded or "damaged". The buttons on these get stuck on and once that battery is dead the pump won't work anymore. This happened to a pump I used 2times. Also had pumps go bad were said to be "overloaded" i bought m18 12ah forge batteries to run these pumps which have fans in them to keep the battery cool. I own over 6 of these and 4 are out for repair and they are denying the warranty on all of them. I don't feel as a product that has a 5 year warranty didn't last 6 months should require a repair bill of over $500 combined.
                  by
                  Response from Milwaukee ToolApr 7, 2025
                  Hey Jerry! We are sorry to hear you are running into issues here, could you send us some details of the repairs to social.media@milwaukeetool.com so we can look into it and try to assist?
                    3 found this review helpful
                    Dont buy
                    Impeller always broken, hole in the housing after a few uses
                    by
                    Response from Customer CareMar 25, 2025
                    Hi, Sean. Our team would like to get a better look at your M18™ Transfer Pump to assist. We will be in contact via email to learn more! Thanks for the review - Milwaukee Tool, Social Team
                      Works great, best with Forge 8 or 12A battery
                      by
                      • Verified Purchase
                      Sap pump
                      Using it to transfer sap and it’s awesome. Has not quit and transferring 100s of gals.
                      by
                      • Verified Purchase
                      • Recommended
                      nit suffered from premature failures
                      I've been extremely satisfied with M18 tool quality, prior to this pump. I used it twice, charging a radiant heat system, and like others, struggled to get more than 18-20 PSI out of it. Second, for transfer of my sap for my maple syrup operation. Second time out in the woods with it, it started refusing to start when I activated the power switch. I don't think I've got an hour of operation on this unit. Went through the troubleshooting, which suggests the impeller may need cleaning - clean as a whistle. The unit does have nice mass for it's secondary use as a very expensive doorstop after it fails.
                      by
                        4 found this review helpful
                        Excellent Product!
                        I own 2 of these. Great product! Pumps great, has A good runtime on one battery. I have pumped everything from RV Antifreeze to muddy water.
                        by
                        • Verified Purchase
                        • Recommended
                        M18 transfer pump
                        Fast pumping, works with hot water too (boilers), water heaters . the viewing window on the pump is also nice. It is a massive time saver especially if you do a lot of work in basements.
                        by
                        • Verified Purchase
                        • Recommended
                        Maybe
                        Very much like it but now it doesn’t work bought it in 9-2018 and just miss the 5 year warranty it kinda makes me very upset since I bought everything Milwaukee because I switch dewalt to Milwaukee. And this isn’t the first product that did this to me. Very unsatisfied.
                        by
                        Response from Social TeamNov 16, 2023
                        If your battery is out of warranty, we recommend sending it through our Lighting Max Repair Program. If you have additional questions about our LMR program please email our team at social.media@milwaukeetool.com or call 1-800-SAW-DUST. - The Social Team
                          Great product
                          Bought this for emptying our hot tub but have also used it for watering our garden with our pond and it has pushed water good through 150’ of hose!
                          by
                          • Verified Purchase
                          • Recommended
                          2 found this review helpful
                          Showing 1-10 of 753 reviews

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                          Product Snapshot

                          Ideal for customers who want cordless convenience, ensuring fast water transfers with up to 480 Gal. per hour.
                          Must-have for anyone looking to quickly remove water with ease and reliability , pumping up to 25 GPM and a max head height of 17 ft. Great for homeowners looking for cordless convenience , making.

                          Flow Rate

                          480 GPM
                          25 GPM

                          Maximum Head Lift

                          18 ft
                          17 ft

                          Power Source

                          Electric
                          Electric

                          Horsepower (HP)

                          1/4 HP
                          1/3

                          Suction Lift

                          48 in