--- title: "Best Cordless Angle Grinders for Every Task" canonical: "https://thetoolwave.com/best-cordless-angle-grinder/" author: "Marcus Vance" published: "2026-11-08T15:00:00+00:00" modified: "2026-09-25T10:19:00+00:00" language: "en-US" site: "The Tool Wave" description: "The best best cordless angle grinder is the Makita XAG04Z, the only model here that combines a brushless motor with the proven 18V LXT platform, giving…" categories: "Power Tools" attribution: "The Tool Wave (https://thetoolwave.com/)" --- # Best Cordless Angle Grinders for Every Task The best **best cordless angle grinder** is the Makita XAG04Z, the only model here that combines a brushless motor with the proven 18V LXT platform, giving you serious cutting power without sacrificing runtime or reliability. It's the right pick if you already own Makita batteries or want a tool that pros have trusted for years. Want maximum cutting speed instead? The Milwaukee 2880-20 M18 Fuel is the fastest grinder we've seen in research, but its no-lock paddle switch isn't for everyone. You trade some safety convenience for raw performance. *As an Amazon Associate, I earn from qualifying purchases.* This guide helps you decide which cordless angle grinder fits your actual work, not just the best specs on paper. We'll also cover who should skip this category entirely like weekend warriors who only need five cuts a year. Everything below comes from current Amazon product data, manufacturer specs, and verified buyer feedback, not hands-on lab testing. ## Quick Answer: The Best Cordless Angle Grinder The Makita XAG04Z is our top pick. Here's the full ranking: - **[Makita XAG04Z 18V LXT® Lithium-Ion Brushless](https://www.amazon.com/dp/B071KD1CHB?tag=thetoolwave-20)** (Best overall for serious users): Proven brushless power in a durable, tool-only body. - **[Milwaukee 2880-20 M18 Fuel Brushless Lithium-Ion](https://www.amazon.com/dp/B09RX4R3TR?tag=thetoolwave-20)** (Best raw cutting speed): Delivers the fastest cuts in the lineup. - **[DEWALT 20V MAX* XR Brushless Cordless](https://www.amazon.com/dp/B0DF84JKVF?tag=thetoolwave-20)** (Best ergonomics): Newer XR design with excellent vibration control. - **[AOBEN Cordless Angle Grinder 4-1/2 inch](https://www.amazon.com/dp/B0D256FJXF?tag=thetoolwave-20)** (Best budget kit): Comes with two 4.0Ah batteries and charger. - **[TEENO Cordless Angle Grinder Kit](https://www.amazon.com/dp/B0FW4ZM7B4?tag=thetoolwave-20)** (Best for light detail work): Compact 3-inch wheel for small tasks. Thinking about just occasional use instead? Jump to Who Should NOT Buy below before you spend anything. ## Comparison Table Here's the lineup at a glance: photo, product, who it's built for, and our /10 score. | Photo | Product | Best for | Score | Buy | | --- | --- | --- | --- | --- | | | Makita XAG04Z 18V LXT® Lithium-Ion Brushless | Serious DIY & Pro Jobsite Work | 9.2/10 | Check price → | | | Milwaukee 2880-20 M18 Fuel Brushless Lithium-Ion | High-Output Cutting & Heavy Grinding | 9.0/10 | Check price → | | | DEWALT 20V MAX* XR Brushless Cordless | Smooth Operation & Low Vibration | 8.8/10 | Check price → | | | AOBEN Cordless Angle Grinder 4-1/2 inch | First-Time Cordless Buyers on a Budget | 7.6/10 | Check price → | | | TEENO Cordless Angle Grinder Kit | Small, Lightweight Detail & Craft Work | 6.8/10 | Check price → | *Scroll sideways on small screens to see every column.* ## Product Reviews ### Makita XAG04Z 18V LXT® Lithium-Ion Brushless: Best Overall for Serious DIY & Pro Jobsite Work MakitaBrushless motor, tool only #1[![Makita XAG04Z 18V LXT® Lithium-Ion Brushless](https://m.media-amazon.com/images/I/61d7RPJNVgL._AC_UL320_.jpg)](https://www.amazon.com/dp/B071KD1CHB?tag=thetoolwave-20)[Makita XAG04Z 18V LXT® Lithium-Ion Brushless](https://www.amazon.com/dp/B071KD1CHB?tag=thetoolwave-20)MakitaBrushless motor, tool only**9.2**OUT OF 10Power & Torque9.5Battery System9.0Build Quality9.3Owner Satisfaction9.0**This is the grinder for anyone who already owns Makita batteries or wants a tool that simply works day after day.** The brushless motor delivers 8,500 RPM on a 5.0Ah battery, and users consistently report excellent runtime on a single charge. The slim barrel grip makes it easy to hold for long cuts without fatigue.It’s a tool-only purchase, which means you need your own Makita 18V LXT battery and charger. That’s actually a plus if you’re already in the ecosystem you avoid paying for another charger you don’t need. The spindle lock is solid, and the guard adjusts with a single lever.**Flaws but not dealbreakers.** It runs hot during heavy grinding sessions, though that’s normal for brushless motors. Some owners mention the on/off switch feels stiff when new. It loosens up after a few uses.Need something with a lower upfront cost? The [AOBEN kit](https://www.amazon.com/dp/B0D256FJXF?tag=thetoolwave-20) includes batteries and charger, but you’ll lose power and longevity.⚠**Compatibility:** This is a bare tool. You must have a Makita 18V LXT battery and charger. If you’re new to Makita, factor that into your total cost.Pros - ✓Brushless motor for longer runtime and less heat - ✓Accepts both 4-1/2 and 5-inch wheels - ✓Compact and lightweight at 5.3 lbs with battery - ✓Very high owner satisfaction (4.8/5 on Amazon) Cons - ✕Tool only no battery or charger included - ✕Stiff switch reported by some users initially - ✕Can run warmer than corded models under heavy load Voltage18VNo Load Speed8,500 RPMWheel Size4-1/2″ / 5″Weight5.3 lbs (with battery)**Best for:** Anyone who values proven reliability and already owns Makita batteries. Ideal for metal fabrication, auto repair, and general construction.[Check current price on Amazon →](https://www.amazon.com/dp/B071KD1CHB?tag=thetoolwave-20) ### Milwaukee 2880-20 M18 Fuel Brushless Lithium-Ion: Best High-Output Cutting & Heavy Grinding MilwaukeeNo-lock paddle switch #2[![Milwaukee 2880-20 M18 Fuel Brushless Lithium-Ion](https://m.media-amazon.com/images/I/51VbFwi7iOL._AC_UL320_.jpg)](https://www.amazon.com/dp/B09RX4R3TR?tag=thetoolwave-20)[Milwaukee 2880-20 M18 Fuel Brushless Lithium-Ion](https://www.amazon.com/dp/B09RX4R3TR?tag=thetoolwave-20)MilwaukeeNo-lock paddle switch**9.0**OUT OF 10Power & Torque9.3Battery System9.2Build Quality9.0Owner Satisfaction8.5**This is the fastest cutting cordless grinder in our research, period.** The M18 Fuel motor puts out impressive torque, and independent user tests show it cuts through 1/4-inch steel faster than any other model here. The no-lock paddle switch means it stops as soon as you let go, which some safety-conscious users prefer.It accepts both 4-1/2 and 5-inch wheels. The tool weighs about 5.0 pounds without a battery, and when paired with a Milwaukee High Output 6.0Ah battery, you get excellent runtime even under heavy load. The REDLINK intelligence software protects the tool from overload.**Flaws but not dealbreakers.** The paddle switch can’t be locked on, so you have to hold it continuously. That’s tiring for long grinding jobs. Also, the tool is tool-only, so you need Milwaukee M18 batteries. Some owners also report that the guard adjustment is stiff.Need a lock-on switch for sustained work? The [DEWALT DCG410B](https://www.amazon.com/dp/B0DF84JKVF?tag=thetoolwave-20) offers a two-finger trigger with a lock-on button.⚠**Safety:** No-lock paddle switch requires constant pressure to run. This improves safety but may cause hand fatigue during extended use.Pros - ✓Industry leading cutting speed for a cordless grinder - ✓Powerful M18 Fuel brushless motor with overload protection - ✓Compatible with Milwaukee High Output batteries for max runtime - ✓Slim grip design for comfortable control Cons - ✕No lock-on switch, must hold paddle continuously - ✕Tool only no battery or charger - ✕Guard adjustment can be stiff out of the box Voltage18VNo Load Speed9,000 RPMWheel Size4-1/2″ / 5″Weight5.0 lbs (bare tool)**Best for:** Tradespeople who need maximum speed for cutting rebar, pipe, and thick metal sheets. Good for Milwaukee ecosystem users.[Check current price on Amazon →](https://www.amazon.com/dp/B09RX4R3TR?tag=thetoolwave-20) ### DEWALT 20V MAX* XR Brushless Cordless: Best Smooth Operation & Low Vibration DEWALTTwo-finger trigger, lock-on #3[![DEWALT 20V MAX* XR Brushless Cordless](https://m.media-amazon.com/images/I/51o1yxbmgaL._AC_UL320_.jpg)](https://www.amazon.com/dp/B0DF84JKVF?tag=thetoolwave-20)[DEWALT 20V MAX* XR Brushless Cordless](https://www.amazon.com/dp/B0DF84JKVF?tag=thetoolwave-20)DEWALTTwo-finger trigger, lock-on**8.8**OUT OF 10Power & Torque8.8Battery System8.5Build Quality9.2Owner Satisfaction8.7**The DEWALT DCG410B is the smoothest running grinder among the big three brands.** Its brushless motor combined with a precision-balanced gear case results in noticeably lower vibration. Users with arthritis or those doing long finishing passes will appreciate the difference. The two-finger trigger with a lock-on button gives you the best of both worlds safety and convenience.This is a newer XR model that runs on the 20V MAX platform. It accepts 4-1/2 and 5-inch wheels. The tool weighs only 4.5 pounds bare, making it the lightest of the pro-grade options. The guard rotates without tools using a thumb lever.**Flaws but not dealbreakers.** It lacks the raw cutting speed of the Milwaukee (8,500 RPM vs 9,000 RPM). Some owners report the battery indicator light is hard to see in sunlight. Also, it’s a bare tool, so you need to own DEWALT 20V batteries.Already invested in the DEWALT ecosystem? This is your best pick. If you’re starting from scratch, the [Makita XAG04Z](https://www.amazon.com/dp/B071KD1CHB?tag=thetoolwave-20) offers a slightly more mature platform.⚠**Compatibility:** Uses DEWALT 20V MAX batteries (not compatible with older 18V NiCad). Tool only, no battery included.Pros - ✓Very low vibration for comfortable extended use - ✓Lock-on trigger reduces hand fatigue - ✓Lightest pro-grade grinder at 4.5 lbs bare - ✓Tool-free guard adjustment Cons - ✕Slightly lower RPM than Milwaukee (8,500 vs 9,000) - ✕Tool only no battery or charger - ✕Battery gauge hard to read in bright light Voltage20V MAX*No Load Speed8,500 RPMWheel Size4-1/2″ / 5″Weight4.5 lbs (bare tool)**Best for:** DEWALT users who want a smooth, low-vibration grinder for cutting and finishing. Ideal for auto body work and precision metal cutting.[Check current price on Amazon →](https://www.amazon.com/dp/B0DF84JKVF?tag=thetoolwave-20) ### AOBEN Cordless Angle Grinder 4-1/2 inch: Best Budget Kit for First-Time Cordless Buyers AOBEN2 batteries, brushless #4[![AOBEN Cordless Angle Grinder 4-1/2 inch](https://m.media-amazon.com/images/I/81SjITesPoL._AC_UL320_.jpg)](https://www.amazon.com/dp/B0D256FJXF?tag=thetoolwave-20)[AOBEN Cordless Angle Grinder 4-1/2 inch](https://www.amazon.com/dp/B0D256FJXF?tag=thetoolwave-20)AOBEN2 batteries, brushless**7.6**OUT OF 10Power & Torque7.0Battery System7.5Build Quality7.8Owner Satisfaction8.0**The AOBEN is the best value kit if you don’t already own batteries.** It comes with two 4.0Ah batteries and a charger, plus a brushless motor that gives it decent runtime. For around the same price as a bare tool from the big three, you get everything you need to start cutting right away. Users report it handles light to medium metal cutting and grinding well.The 21V battery platform is proprietary, meaning you can’t swap with other brands. But the included pair means you can keep one charging while using the other. The grinder itself has a comfortable rubber grip and a safety paddle switch. It spins up to 8,500 RPM.**Flaws but not dealbreakers.** Build quality isn’t on par with Makita or Milwaukee. Some owners mention the guard feels a bit flimsy and the battery charge indicator can be inaccurate. Replacement batteries are harder to find than for the major brands.If you want something that will last through heavy daily use, step up to the [Makita XAG04Z](https://www.amazon.com/dp/B071KD1CHB?tag=thetoolwave-20). But for weekend projects and occasional jobs, this kit is hard to beat on value.⚠**Care:** The 21V batteries are proprietary. Keep them stored at room temperature and avoid full discharges to maximize lifespan.Pros - ✓Complete kit with two 4.0Ah batteries and charger - ✓Brushless motor for better efficiency - ✓Good value for light to medium work - ✓Comfortable rubber grip handle Cons - ✕Proprietary battery system limits future tool expansion - ✕Guard and plastic components feel less durable - ✕Not powerful enough for heavy continuous grinding Voltage21VNo Load Speed8,500 RPMWheel Size4-1/2″Batteries2x 4.0Ah**Best for:** First-time cordless grinder buyers on a budget. DIYers who need occasional metal cutting, bolt removal, or light grinding around the house.[Check current price on Amazon →](https://www.amazon.com/dp/B0D256FJXF?tag=thetoolwave-20) ### TEENO Cordless Angle Grinder Kit: Best for Small, Lightweight Detail & Craft Work TEENO3-inch wheel, compact #5[![TEENO Cordless Angle Grinder Kit](https://m.media-amazon.com/images/I/91MJdAZy5yL._AC_UL320_.jpg)](https://www.amazon.com/dp/B0FW4ZM7B4?tag=thetoolwave-20)[TEENO Cordless Angle Grinder Kit](https://www.amazon.com/dp/B0FW4ZM7B4?tag=thetoolwave-20)TEENO3-inch wheel, compact**6.8**OUT OF 10Power & Torque6.0Battery System6.5Build Quality7.0Owner Satisfaction7.5**The TEENO is a tiny 3-inch grinder built for precise, light-duty work where a full-size tool is too clumsy.** It spins at 19,500 RPM, which is fast for its size, and comes with six cutting discs and two 16.8V 2000mAh batteries. Users use it for cutting small metal rods, smoothing edges on craft projects, and even delicate wood carving with the right attachment.The 3-inch wheel means it can’t handle deep cuts or heavy material removal. But for detail work, that small wheel gives you incredible control. The brushless motor is quiet and efficient. The paddle switch requires constant pressure, which is actually a safety bonus for one-handed use.**Flaws but not dealbreakers.** Battery life is limited around 10-15 minutes of continuous cutting per charge. The 16.8V system is noticeably weaker than 18V or 20V platforms. And finding replacement 3-inch discs locally can be a hassle you’ll need to order online.If you need real cutting power for metal, skip this and go for the [Makita XAG04Z](https://www.amazon.com/dp/B071KD1CHB?tag=thetoolwave-20) with its 4-1/2 inch wheel. But if your work is small and precise, the TEENO is surprisingly capable.⚠**Sizing:** Uses 3-inch discs only. Standard 4-1/2 inch discs will not fit. Make sure you have a supply of the right size before buying.Pros - ✓Very compact and lightweight for one-handed use - ✓High 19,500 RPM for fast cuts on small material - ✓Comes with 6 cutting discs and two batteries - ✓Brushless motor runs quietly Cons - ✕Low power compared to full-size grinders - ✕Proprietary 16.8V batteries with short runtime - ✕Limited disc availability at local hardware stores Voltage16.8VNo Load Speed19,500 RPMWheel Size3-inchBatteries2x 2000mAh**Best for:** Hobbyists, crafters, and anyone needing a precision cutting tool for small metal pieces, plastic, or light wood work. Good for model making and auto body detail work.[Check current price on Amazon →](https://www.amazon.com/dp/B0FW4ZM7B4?tag=thetoolwave-20) ## Buying Guide: Power, Battery Platform, Switch Type and Size A cordless angle grinder isn't a one-size-fits-all tool. The right choice depends on how you'll use it, what batteries you already own, and how often you pick it up. Here are the four things that actually matter. ### What voltage and speed do I really need? The pro models (Makita, Milwaukee, DEWALT) all run on 18V or 20V MAX platforms and spin between 8,500 and 9,000 RPM. That's enough to cut through 1/4-inch steel rebar, grind welds, or zip through bolts. The AOBEN runs on a 21V platform and matches the 8,500 RPM speed, but real-world cutting power is lower due to the less efficient motor design. The TEENO spins very fast at 19,500 RPM, but its tiny 3-inch wheel and 16.8V battery mean it can't maintain speed under load. For context, the [Milwaukee 2880-20](https://www.amazon.com/dp/B09RX4R3TR?tag=thetoolwave-20) can cut through a 3/8-inch steel bar in under ten seconds. The TEENO would take over a minute and likely bog down. If you're cutting metal thicker than 1/8 inch, stick with the 18V/20V pro models. For occasional bolt cutting or light grinding, the AOBEN kit gets the job done for a fraction of the cost. ### Should I buy a tool-only grinder or a complete kit? This is the biggest decision. The three pro brands (Makita, Milwaukee, DEWALT) sell only the bare tool. If you don't own their batteries, you'll need to buy them separately. That's a big upfront cost. The AOBEN and TEENO kits include everything. You open the box and start cutting. But you're locking yourself into a proprietary battery system. If that tool breaks or you want to expand to other tools, you might be stuck. Here's a rough comparison of what you're getting: | Factor | Pro bare tool (e.g. Makita) | Budget kit (e.g. AOBEN) | | --- | --- | --- | | Upfront cost | Lower (tool only) | Higher (tool + batteries) | | Total system cost | Higher if buying batteries | Lower, all included | | Platform longevity | 10+ years of support | Unknown, smaller brand | | Replacement batteries | Widely available | Harder to find | As of 2026, the Makita 18V LXT platform has been around for nearly two decades. The AOBEN platform is newer and less proven. If you plan to use the grinder for years, investing in a major brand's ecosystem pays off. ### Paddle switch vs. slide switch vs. lock-on trigger This is a personal preference, but it affects safety and comfort. The Milwaukee 2880-20 uses a no-lock paddle switch. You must hold it down to run it. That's safer if you drop the tool, but it tires your hand during long grinding passes. The DEWALT DCG410B has a two-finger trigger with a lock-on button. You can lock it on for sustained use, then tap the trigger to release. Many users prefer this for extended work. The Makita XAG04Z uses a traditional slide switch with a lock-off button. It stays on until you slide it off. That's convenient but less safe if you set it down while still spinning. The AOBEN and TEENO both use paddle switches without lock-on. For light use, that's fine. For heavy grinding, consider the DEWALT or Makita. ### What size wheel do I need? Standard angle grinders use 4-1/2 inch or 5 inch wheels. That's the sweet spot for most metal cutting, grinding, and polishing. All four full-size models (Makita, Milwaukee, DEWALT, AOBEN) accept both sizes. The TEENO uses a 3-inch wheel. That limits its cutting depth to about 1/2 inch. You can't cut through pipe or thick plate. But for small jobs like trimming bolts, cutting sheet metal, or cleaning up castings, it's easier to control. One thing to watch: the TEENO's 3-inch discs aren't as common at hardware stores. You'll likely need to order them online. Factor that into your decision. For anything beyond light craft work, spring for a 4-1/2 inch model. To see how these factors play out on real picks, compare the [Makita XAG04Z 18V LXT® Lithium-Ion Brushless](https://www.amazon.com/dp/B071KD1CHB?tag=thetoolwave-20), [Milwaukee 2880-20 M18 Fuel Brushless Lithium-Ion](https://www.amazon.com/dp/B09RX4R3TR?tag=thetoolwave-20) and the [DEWALT 20V MAX* XR Brushless Cordless](https://www.amazon.com/dp/B0DF84JKVF?tag=thetoolwave-20) reviewed above. ## Who Should NOT Buy Best Cordless Angle Grinder A cordless angle grinder is the wrong tool for several types of buyers. Honest advice means knowing when to say no. ### You need to cut or grind for more than 40 minutes at a time If you're doing serious fabrication, removing rust from a vehicle, or cutting dozens of metal pieces in one session, a cordless grinder will frustrate you. Even the best models like the Makita XAG04Z or Milwaukee 2880-20 will drain a 5.0Ah battery in 20 to 30 minutes under heavy load. Then you're swapping batteries and waiting for charges. A corded angle grinder gives you unlimited runtime and more consistent power. For the same money as a cordless kit, you can buy a high-quality corded grinder that will never run out of juice. If your work is stationary, a corded model is still the better tool. ### You're on a tight budget and need a grinder for one small project If you only need to cut a few bolts or grind a single weld, buying any cordless grinder is overspending. You'd be better off borrowing a tool from a friend, renting one from a local tool library, or even using a hacksaw or hand file for tiny jobs. The battery and charger alone cost more than a cheap corded grinder. Alternatively, look for a cheap corded grinder at a hardware store. You'll spend less and get more power. The convenience of cordless isn't worth it for a single-use scenario. ### You need precision for delicate craft work but want power too The TEENO is the only compact option here, but it has limited power and battery life. If you're doing fine metalwork, jewelry making, or detailed carving, a rotary tool like a Dremel might be a better fit. Rotary tools use smaller collets and offer variable speed, which gives you more control for intricate cuts. Conversely, if you need real power for heavy work, don't compromise with a mini grinder. Go straight for the pro-level 4-1/2 inch models. The [Makita XAG04Z](https://www.amazon.com/dp/B071KD1CHB?tag=thetoolwave-20) will handle both heavy and light work, but it's heavier and less precise for tiny details. ## Final Verdict If I had to recommend one cordless angle grinder to the widest range of people, it's the [Makita XAG04Z](https://www.amazon.com/dp/B071KD1CHB?tag=thetoolwave-20). It's not the fastest or the lightest, but it's the most reliable, best supported, and most comfortable for daily use. The 18V LXT platform is a safe investment with decades of tool support. Want maximum cutting speed and you're deep in the Milwaukee ecosystem? Get the [Milwaukee 2880-20](https://www.amazon.com/dp/B09RX4R3TR?tag=thetoolwave-20). It's a beast for heavy metal cutting, but be prepared for the no-lock paddle switch. Need the smoothest operation with low vibration for finishing work? The [DEWALT DCG410B](https://www.amazon.com/dp/B0DF84JKVF?tag=thetoolwave-20) is your best bet. It's the lightest pro grinder here and the lock-on trigger is a game changer for long sessions. On a budget and need a complete kit to start? The [AOBEN](https://www.amazon.com/dp/B0D256FJXF?tag=thetoolwave-20) gives you everything for less than a bare pro tool. Just know that its proprietary batteries limit future expansion. And if your work is small, precise, and detail-oriented, the [TEENO](https://www.amazon.com/dp/B0FW4ZM7B4?tag=thetoolwave-20) is a surprisingly capable little tool. But if you need real cutting power, skip it and go for the Makita. Before you buy, double check the Who Should NOT Buy section above. If you're not the right buyer for a cordless grinder, you'll save money and frustration by choosing a different tool. ## FAQ ### What's the best cordless angle grinder overall? The Makita XAG04Z is the best overall pick. It combines a proven brushless motor, excellent build quality, and access to the huge Makita 18V LXT battery ecosystem. Owner satisfaction is extremely high at 4.8 out of 5 stars. ### Are cordless angle grinders as powerful as corded ones? No, not quite. A corded angle grinder typically delivers 10 to 15 amps of continuous power, which translates to higher torque and no battery fade. A cordless grinder like the Milwaukee 2880-20 comes close for short bursts, but it can't sustain maximum power for long cuts. For most DIY and even professional jobs, cordless power is sufficient. But for heavy daily production work, corded still wins. ### How long does the battery last on a cordless angle grinder? It depends on the battery size and workload. With a 5.0Ah battery, expect 15 to 30 minutes of continuous heavy cutting. Lighter grinding can push that to 45 minutes. The AOBEN's two 4.0Ah batteries give you about the same runtime when used one after another. The TEENO's 2000mAh batteries last about 10 to 15 minutes per charge under load. ### Can I use 5-inch wheels on a 4-1/2 inch grinder? Yes, if the grinder is designed for both. The Makita, Milwaukee, and DEWALT models all accept 4-1/2 and 5-inch wheels. The AOBEN is limited to 4-1/2 inch. The TEENO uses only 3-inch wheels. Always check the manufacturer's specifications before using a larger wheel, as the guard and RPM rating must match. ### Is a brushless motor worth the extra cost? Yes. Brushless motors are more efficient, run cooler, and last longer than brushed motors. They also deliver more torque per watt of battery power. All five grinders in this guide use brushless motors. If you find a cheap cordless grinder with a brushed motor, skip it you'll get poor runtime and shorter tool life. Investing in a brushless model like the Makita XAG04Z pays off over time.