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Internet # 318102170

Model # 2880-20-48-59-1850

Store SO SKU #332031926

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M18 FUEL 18V Lithium-Ion Brushless Cordless 4-1/2 in./5 in. Grinder and Starter Kit w/(1) 5.0 Ah Battery and Charger

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$425.00
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  • Cordless paddle switch grinder generates 11A corded power
  • Battery powered grinder: up to 135 cuts in 3/8" rebar per charge
  • Compatible With All M18 Cordless Power Tools
  • View More Details

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Product Details

About This Product

The MILWAUKEE M18 FUEL 4-1/2" / 5" Grinder Paddle Switch, No Lock is the next advancement in power and performance, generating 11A corded power, fastest cutting, and delivering up to 135 cuts per charge. The M18 FUEL 4-1/2" / 5" Grinder generates 11A corded power allowing completion of the toughest grinding and cutting applications, all on the M18 Cordless System. The POWERSTATE Brushless Motor delivers maximum sustained power and 8,500 RPM to remove material faster and increase productivity. REDLINK PLUS Intelligence ensures unmatched levels of performance, protection, and compatibility. The M18 FUEL 4-1/2" / 5" Grinder includes an electronic clutch for kickback protection, as well as overload protection to maximize motor life. The M18 REDLITHIUM HIGH OUTPUT XC6.0 Batteries (not included) deliver 50% more power while running 50% cooler than our M18 REDLITHIUM XC Batteries and are compatible with 200+ Tools in the M18 System. Experience faster accessory changes, and less downtime with tool-free accessory and guard adjustments, while remaining fully compatible with the most common accessories in the market. The M18 FUEL 4-1/2" / 5" Grinder takes cordless grinders to the next level in performance and run-time. The MILWAUKEE M18 REDLITHIUM XC5.0 Starter Kit delivers up to 2.5X more runtime, 20% more power and 2X more recharges than standard lithium-ion batteries.

Highlights

  • POWERSTATE brushless motor: purposely built for the M18 FUEL 4-1/2 in. / 5 in. angle grinder delivers 8,500 RPM to provide the power to complete the toughest grinding and cutting applications
  • REDLINK PLUS intelligence: most advanced system of electronics in the industry, enabling communication between batteries and tools, allowing for unmatched levels of performance, protection, and compatibility
  • REDLITHIUM HIGH OUTPUT battery pack (not included): provides 50% more power and runs 50% cooler versus standard REDLITHIUM battery, superior pack construction, electronics and performance deliver more work per charge and more work over pack lifespan than any battery on the market
  • Paddle switch design for increased comfort and ease-of-use when operating in various positions
  • Tool-free guard adjustment for faster guard installations and adjustments
  • Tool-free accessory changes with integrated FIXTEC Nut technology
  • Electronic clutch for kickback protection
  • 5/8 in.-11 spindle for use with common grinding accessories
  • Overload protection to maximize motor life
  • Anti-vibration side handle for increased user comfort and safety
  • Compatible with all M18 batteries
  • Includes: one M18 FUEL 4-1/2 in. / 5 in. grinder paddle switch, no-lock (2880-20), one T27 guard, one T1 clip-on guard, 1 side handle, 1 spanner wrench, 1 back flange, 1 flange nut, one 5.0Ah battery and 1 multi-volt charger
  • All-weather performance: delivers fade free power in extreme jobsite conditions
  • Shop All Milwaukee Products
  • Click here for more information on Electronic Recycling Programs
  • Return Policy

Product Information

Internet # 318102170

Model # 2880-20-48-59-1850

Store SO SKU #332031926

Additional Resources

Shop All Milwaukee

Specifications

Dimensions: H 4.05 in, W 2.77 in, D 12.71 in

Dimensions

Product Depth (in.)

12.71 in

Product Height (in.)

4.05 in

Product Width (in.)

2.77 in

Wheel Diameter (in.)

4.5 in

Details

Amperage (A)

0 A

Battery Amp Hours

5 Ah

Battery Power Type

Lithium Ion

Battery Size

18-volt

Battery Voltage (V)

18V

Charger Included

Charger Included

Color Family

Red

Cordless Tool Type

Angle Grinder

Cordless/Corded

Cordless

Grinder Switch Type

Paddle

Included

Battery Included, Charger

Motor Type

Brushless

Number of Total Batteries Included

1

Power Tool Features

Adjustable Handle Position, Blade Guard System, Cushioned Grip, Side Handle

Product Weight (lb.)

3.1 lb

Returnable

90-Day

Tools Product Type

Power Tool

Voltage (V)

18

Warranty / Certifications

Manufacturer Warranty

5 Year Warranty

Questions & Answers

Does the buy one get one really mean buy one get one.? I don’t new any more batteries just the grinder so where is the buy one get one
ByAug 9, 2026
0 Answer | 
Answer This Question

How much does it weigh?
ByJul 28, 2026
1 Answer | 
Answer This Question

The M18 FUEL 4-1/2"/5" Grinder with Paddle Switch (Tool-Only) weighs approximately 4.5 lbs (without battery).

By|Jul 29, 2026


    Does this product include a disc for connecting any material?
    ByMay 7, 2026
    1 Answer | 
    Answer This Question

    Hey Mauricio. No, the Milwaukee M18 FUEL™ 4-1/2" / 5" Grinder with Paddle Switch does not include a grinding or cutting disc in the box.

    By|May 7, 2026


      Can I install a 4" grinder disk on this model?
      ByApr 30, 2026
      1 Answer | 
      Answer This Question

      Using a 4" wheel is acceptable as long as it has the correct 7/8" arbor, the guard stays on, and the RPM rating is compatible.

      By|May 1, 2026


        Do 7/8” arbor discs fit it?
        ByJan 9, 2026
        1 Answer | 
        Answer This Question

        Yes, the Milwaukee M18 FUEL™ 4-1/2" / 5" Grinder with Paddle Switch uses a 5/8"-11 spindle, which is the standard size for most 4-1/2" and 5" angle grinders. This means it is fully compatible with 7/8" arbor discs, as those discs are designed to fit over the 5/8"-11 threaded spindle using the included flange and nut system.

        By|Jun 6, 2026

          (6)

          What is the rpm on this tool
          ByJan 5, 2026
          1 Answer | 
          Answer This Question

          Hi, Moises. The Milwaukee M18 FUEL™ 4-1/2" / 5" Variable Speed Braking Grinder features a variable speed dial with 5 settings, allowing for an RPM range of 3,500 to 8,500 RPM. This provides excellent control for various grinding and cutting applications.

          By|Jan 8, 2026


            Speed control information
            ByDec 27, 2025
            1 Answer | 
            Answer This Question

            This version does not have variable speed. It runs at a fixed speed of 8,500 RPM for grinding and cutting applications. This version includes a 5-position variable speed dial, allowing you to adjust between 3,500 RPM and 8,500 RPM for greater control in different applications. It also features a RAPIDSTOP™ brake for enhanced safety

            By|May 14, 2026

              (2)

              What is a quality purchase? What do I need to buy to get the free tool?
              ByNov 25, 2025
              0 Answer | 
              Answer This Question

              Viewing 1-8 of 79

              Customer Reviews

              4.7 out of 5

              • 4.7 out of 2,519 reviews
              • 93% recommend this product
              Filter by:
              Showing 1-10 of 2,519 reviews
              It’s way more than I expected. Easier swap of the cutting wheels. Spins faster than my last corded grinder, and accelerates to that speed faster. It also doesn’t bog down with heat while using a flap wheel. I love how easy it is to change the angle of the guard too, no tools required, just pull the tab and twist the guard out of the way. The battery life is much longer than I have used it for in a day’s work. When it does run out, the charger makes quick work of getting you back to work. 10/10 would recommend this combo to anybody on the fence about getting a corded or battery grinder. No dragging an extension cord out to the yard, or risk of melting the cord casing with sparks.
              by
              Great grinder, excellent run time. I really like the innovative switch as shown. And obviously not fighting with the cord, like I did with my old corded grinder for years, is epic.
              by
              I recently purchased the Milwaukee 2880-20 M18 FUEL 4-1/2" / 5" brushless angle grinder. It's a nice upgrade over my old grinder. It has more power. I feel safer using the grinder since it has RAPIDSTOP brake, which stops wheels in under two seconds.
              by
              This customer chose to rate the product and not provide text.
              by
              I've always owned corded grinders up until this purchase and let me tell you how amazing it is to finally ditch the cord... This thing is a beast don't get me wrong!- But my favorite part is not having to run an annoyingly long extension cord and having to unwind and wind it back up after every use. It is truly so nice just being able to slap a battery on and being good to go. I would also like to mention how impressive the rapidstop brake is. If you're like me you probably set corded grinders down and they spin for a little bit before they come to a stop. Not the milwaukee! It stops spinning before I can even position my arm down. It also has an adjustable guard which is another great touch. I always run the guards on mine so it's nice Milwaukee is doing what they can to make the guards not annoying/get in the way while working hopefully convincing more to work with it on. This is definitely going to be a tool I would consider an investment due to time and effort you will be saving compared to corded. And for the cherry on top, this has more power than my old corded one to my surprise. Highly recommend!
              by
              The Milwaukee line has been great in every aspect! This is actually my second grinder my son like them also it seems ?? . Great power , excellent ergonomics and if you take reasonable care of your equipment they really last ! Highly recommend and Home Depot is also hard to beat as a retailer . Thanks
              by
              Super excited to have this grinder. Have an old dewalt, which is great but it’s corded and need the ability to use on the fly. This will fit well with my other Fuel items. Go Milwaukee!
              by
              Love it
              Bought this about a month ago and love it. Used it on 2 tile jobs.. battery lasts for days and I love the auto stop. Paddle is really nice when holding tile in 1 hand and grinder in the other. Awesome deal
              by
                Excellent product Easy to use great thank you
                by
                This M18 cordless grinder has been a great tool. No extra tool is needed for blade changes. Also the rapid stop feature works flawlessly. The tool is well balanced and depending on the battery used, not at all heavy, eliminating fatigue with long usage.
                by
                Showing 1-10 of 2,519 reviews

                Compare Key Features

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                Product Snapshot

                Ideal for heavy-duty grinding and cutting tasks, this grinder delivers corded performance with cordless convenience. A must-have for professionals demanding power and flexibility.
                Built for pros: Powerful cordless grinder with rapid stop brake for enhanced safety.
                Ideal for professionals needing variable speed control, powerful performance, and enhanced safety features.
                Ideal for professionals or DIYers who need high-performance cordless power and safety features, ensuring efficient and controlled cutting and grinding.

                Disc Size

                4.5 in.
                4-1/2 in. / 5 in.
                4.5 in
                6 in.

                Power Output

                11A
                11A
                18V
                13A

                Speed Control

                Dust Protection

                Safety Features