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Model #2785-20-48-11-1880

M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 7/9 in. Angle Grinder W/ HIGH OUTPUT XC 8.0Ah Battery

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  • Delivers the power of 15 Amp corded large angle grinder
  • Includes M18 18-Volt lithium-ion HIGH OUTPUT XC 8.0Ah battery
  • Part of the M18 System, featuring over 200+ tools
  • View More Details

Frequently Bought Together


Product Overview

The M18 FUEL 7 in./9 in. Large Angle Grinder is the world's first 18v LAG generating the power of a 15 Amp corded large angle grinder, is up to 2 lbs. lighter, and has 9 in. grinding capacity. Providing high performance, advanced ergonomics and legendary durability, this grinder is designed to complete the toughest grinding, surface preparation, and cutting applications with any 7 in. to 9 in. accessory. The POWERSTATE Brushless Motor provides 6,600 RPM and higher speeds under load for corded grinding/cutting performance. REDLINK PLUS intelligence ensures maximum performance and protection from overload, overheating and over discharge. Tool-free accessory changes using the FIXTEC nut and guard adjustments mean less downtime during work. The Milwaukee M18 REDLITHIUM HIGH OUTPUT XC8.0 Battery Pack provides 50% more power and runs 50% cooler vs M18 REDLITHIUM XC battery packs. The optimized combination of smaller size and increased power of the 18-Volt battery provides a great solution for the entire range of M18 products. The lithium-ion battery delivers fade-free power and runs substantially cooler through heavy applications, allowing trade professionals to push their cordless tools throughout a wide application range.
  • POWERSTATE brushless motor: purposely built for the M18 FUEL 7 in./9 in. L angle grinder to generate the power and performance of a 15 Amp corded large angle grinder
  • REDLINK PLUS intelligence: ensures optimal performance and provides overload protection to prevent damage to the tool and battery during heavy applications while still maintaining compatibility across the entire M18 system
  • REDLITHIUM high output HD 12.0 battery pack: provides 50% more power and runs 50% cooler versus standard REDLITHIUM HD packs, superior pack construction provides the industry ft. s best protection against jobsite conditions
  • 100% tool free: make all accessory changes and guard adjustments without a wrench for increased productivity.
  • Metal housing and gearing system providing legendary durability
  • Dual action trigger: eliminating accidental trigger actuation
  • Compatible with all M18 batteries and tools
  • Includes: 1 M18 FUEL 18-Volt lithium-ion brushless cordless 7/9 in. angle grinder (2785-20), one M18 18-Volt lithium-ion HIGH OUTPUT XC 8.0 Ah battery (48-11-1880), type 27 9 in. guard, side handle, FIXTEC nut, backing flange, wrench
  • Best-in-class construction: offers long-lasting performance and the best protection against jobsite, weather and environmental conditions
  • Fuel gauge onboard: displays remaining run-time
  • Versatility: powers all 175+ M18 cordless solutions
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Info & Guides

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Product Depth (in.)
3.4 in
Product Height (in.)
5.66 in
Product Width (in.)
22.31 in
Wheel Diameter (in.)
9 in


Amperage (amps)
0 A
Arbor Size
5/8 - 11 in.
Batteries Included
Battery Amp Hours
8 Ah
Battery Power Type
Lithium Ion
Battery Size
1 Battery Included
(1) 8 Ah Battery Included
Charger Included
Charger Not Included
Color Family
Cordless Tool Type
Angle Grinder
Cordless/ Corded
Electronic Speed Control
Grinder Switch Type
No Additional Items Included
Maximum Speed (rpm)
Motor Type
Number of Total Batteries Included
Power Tool Features
Adjustable Handle Position,No Tool Wheel Change,Spindle Lock
Product Weight (lb.)
11.95 lb
Tools Product Type
Power Tool
Variable Speed
Voltage (volts)

Warranty / Certifications

Certifications and Listings
UL Listed
Manufacturer Warranty
5 Year Warranty on Tool & 3 Year Battery Warranty

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4.7
    out of 167 reviews
  • 89% recommend this product
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Showing 1-10 of 167 reviews
Poor physical size design
I wish they still made the 9.0 battery’s. The 9.0 was more compact and fit in my pack out much better than the 8.0 battery. Size size it sucks. Wish they would bring the 9.0 back or make this battery More narrow and short
Response from Milwaukee ToolSep 23, 2021
Thank you for your review. We appreciate your honest feedback and we will pass your suggestions along to our team. Please feel free to contact us at socialmedia@milwaukeetool.com if you would like further investigation into this matter. Thank you. -Cayla
    1 person found this helpful
    Good When it Works
    The tool has a great feel to it, being sturdy, heafty, and well balanced. I’ve used it for a few projects around the house, from grinding down concrete subfloors with a cup wheel to cutting paver blocks with a diamond blade. It definitely feels like it has the power to handle any job. The main drawback here is that this monster CHEWS through batteries. If you’re a professional, or have plenty to spare, them you’ll probably be fine, but a 5ah/6ah HO battery equates to barely 5 min. of runtime with the cup wheel or maybe 4-8 patio block cuts depending on the size of the block. Even with a few of them, having a charged battery is my limiting factory with a single charger. I can run through three batteries quicker than I can charge one. My bigger concern however is that mine died after just FOUR months - and thats with limited nights and weekend use. Given my battery situation, it barely gets warm before I run out of juice (20 min runtime max over a few hours) yet the motor still managed to fail. Luckily Milwaukee’s warranty service is FANTASTIC and had it fixed and returned within a a week, which is why I’m happy to keep expanding my M18 collection, but it’s still concerning given it’s DIYer workload.
      • Recommended
      Worked great on milwaukee blower, can do the yard two or three times on one charge.
      Worked great on milwaukee blower, can do the yard two or three times on one charge.
      • Verified Purchase
      • Recommended
      2 people found this helpful
      Good battery for bigger tools
      Good battery for bigger tools
      • Verified Purchase
      • Recommended
      1 person found this helpful
      Cannot say enough about great this product is. Milwaukee not only stands by their product but the...
      Cannot say enough about great this product is. Milwaukee not only stands by their product but they also believe in it. Ive got a small army of Milwaukee Tools, both 18v and regular hand tools from drywall saws to tape measures. I can say that they are worth the extra money. These batteries last forever, Ive got 3 now because how awesome they are. They cost a lot, sure but I get literally twice if not three time the life. They may weigh a pound extra but Id rather pick up the pound and get 4 more hours.
      • Recommended
      7 people found this helpful
      Can't go wrong with the M18 system. This XC8.0 HO works great for high demand tools at 2.4lbs we...
      Can't go wrong with the M18 system. This XC8.0 HO works great for high demand tools at 2.4lbs weight. I'll tell you right away that I'm a huge fan of the M18 system. I have been very happy with the system for a variety of tools I have. This is my first very large battery, and high output type. I plan to use it with future high demand tools (maybe a leaf blower), but for now it serves well for my existing tools, although it is a bit heavier. My go-to battery is the XC5.0, which is light enough and has enough juice for drivers, drills and hand saws. The XC8.0 fits them just fine, but adds a bit of weight. The attached photo shows the difference in size between a CP2.0, XC5.0 and this XC8.0 if you want a reference. Here are also some measured weights of the batteries: - XC8.0: 2.4 lb (this product) - XC5.0: 1.6 lb - CP2.0: 1.0 lb I was using the XC8.0 on my little hand vac and after 20 minutes, it didn't lose an LED of charge, although it did accept more charge. Compare that to the CP2.0 which is almost exhausted. The trade off is simple: weight. This fits the bill for larger stationary tools, two hand tools or power hungry tools like a blower. In my case, it is my back up for now. If I lose power on any other battery, this will fill in while the other recharges. Speaking of recharging, I am using the standard charger. Works fine, but takes quite a few hours for a full charge. Not a problem if you have backup. Mad in Korea and China
      • Recommended
      9 people found this helpful
      This review is for the M18 8.0 a/h battery, model # 48-11-1880. The 1880 is one of Milwaukee's n...
      This review is for the M18 8.0 a/h battery, model # 48-11-1880. The 1880 is one of Milwaukee's new "High Output" series of lithium batteries. Compared to the standard XC series they're supposed to give 50% more power and run cooler. There's a 'fuel gauge' that shows the amount of charge (see photo below). The battery came with a minimal charge, so plan on charging it before use. No charger is included in this package, just a single battery. One of the hallmarks of the M18 battery line is that there's no performance degradation as the battery runs low on power - it simple reaches the end of its charge and shuts off. Checking the fuel gauge occasionally can keep you apprised of the amount of work time left before a battery swap will be required. When the last light lit is flashing, you're down to less than 10% remaining power. I have an M18 6.0 a/h "High Output" battery as well as this new model 1880. In a side by side weight comparison the 6.0 a/h unit is 2 pounds, 6.5 ounces while the new 8.0 a/h unit comes in at 2 pounds, 6.4 ounces (as measured on my wife's kitchen food scale; YMMV). More power packed into the same sized package. (See the photo below). I'm a homeowner / DIY'er, not a professional, so I can't give a detailed account of how the new 8.0 a/h battery would work in a full day of drilling holes through rafters or some such. It’s difficult to review batteries without performing a full set of benchmark tests, under precise conditions – which, as a DIY’er, I’m not set up to do. I can say that on an M18 angle grinder (model 2980-20) it performs wonderfully. Milwaukee’s new line of ‘high output’ batteries really is a step forward in battery design, I think, rather than just an advertising claim. There’s a 3-year warranty on the battery and, of course, Home Depot offers a 90-day return policy. HTH Regards, Jim
      • Recommended
      6 people found this helpful
      The Milwaukee M18 18-Volt Lithium-Ion HIGH OUTPUT XC 8.0Ah Battery seems a step up from my M18 18...
      The Milwaukee M18 18-Volt Lithium-Ion HIGH OUTPUT XC 8.0Ah Battery seems a step up from my M18 18-volt 9.0Ah HD (High Demand) batteries. A few ounces lighter and 20% smaller, it carries my Milwaukee M18V tool loads for the same continuous duration, while offering M18 portable power in a lighter, smaller package! With the standard Milwaukee charger, this 8.0Ah HD battery also provides shorter recharge times than the 9.0...Nice. Overall, All of my M18 Lithium-Ion batteries (XC, HD, HO in 5.0-6.0-9.0-12.0) still perform flawlessly!!
      • Recommended
      4 people found this helpful
      This 18 volt lithium- ion high output battery is another great product by Milwaukee. It fits over...
      This 18 volt lithium- ion high output battery is another great product by Milwaukee. It fits over 175 M18 tools, which I have several of,from light demand to heavy demand. It has fifty percent more power and runs cooler than M18 Redlithium XC battery packs.It is surprisingly heavy for it's size so I imagine that it will be very durable. I have used it on a few tools already and it works great. It is expensive but the price is fair for the quality. It has a three year warranty.
      • Recommended
      This M18 18-Volt HIGH OUTPUT XC 8.0 Ah Battery is a great addition to my M18 tools. I have been extremely happy with all of my Milwaukee M18 tools. I have two XC 5.0 Ah and two XC 6.0 Ah batteries, and needed one with a bit more run-time. I haven’t yet had any projects that would use enough power to run it down, so I can’t say just how much better it is, but Milwaukee claims that this one provides 60% more run-time than an M18 XC 5.0 battery, so this is a welcome addition for those jobs that require more power and longer use of some tools. Though I didn’t time it, the first-time full charged pretty quickly (less than 1 hr.) using the Rapid Charger. This XC 8.0 is very close to the same size and weight of the XC 6.0, so I don’t even notice any difference in handling. While some other manufacturers are going to higher voltages, Milwaukee just keeps making the M18 batteries better, without the need for more voltage, plus we don’t have to replace our tools. These work with the entire line of over 175 M18 tools. Gotta love it.
      • Recommended
      Showing 1-10 of 167 reviews