Best Cordless Angle Grinder

Best Cordless Angle Grinder for Home Use

If you want to avoid leapfrogging over extension cords and further maximize your productivity, finding the best cordless grinder should be at the top of your priorities list. If that’s the case, you’ve come to the right place.

In this article, we’ll take a deep dive into the top cordless grinders for homeowners and DIYers. We’ll be covering a range of popular high-end models and some more budget-friendly options that still pack some serious gusto.

So stick around to learn more about the best cordless angle grinders as we review each grinder’s top attributes, so you can pick the right grinder that works for you!

① Our Pick
Dewalt Dcg412B 20V Max 4-1/2” Angle Grinder DeWalt DCG412B 20V MAX 4-1/2” Angle Grinder
  • Incredibly powerful cost-effective cordless angle grinder that generates an impressive 8,000 RPM plus making it ideal for contractors.


  • A robust angle grinder has been specifically designed for more heavy-duty demanding applications including construction sites.


  • Awesome over-under handle design with a handy 2-finger trigger switch that is exceedingly comfortable to use for extended periods.


  • A very versatile angle grinder that can be used with either a 4 1/2-inch wheel or 5-inch cutting or grinding wheel attached to it.

Comparison Chart

① Best Overall
  • 5.0
  • Pros:
    • Very powerful 20V cordless grinder
    • Fast-acting disc/wheel replacement
    • Responsive trigger with lock-off shift
② Runner Up
  • 4.5
  • Pros:
    • Brushless motor output -8,500 RPM
    • Snap-on X-LOCK for wheel changes
    • Automatic speed & torque technology
③ Deluxe Pick
  • 4.0
  • Pros:
    • Robust Powerstate brushless motor
    • Utilizes a comfortable paddle switch
    • Added sidebar for precision & power
④ Value Pick
  • 3.5
  • Pros:
    • Cost-effective 20V cordless grinder
    • Made in the US with a 3-yr warranty
    • Comfy 3-position overmold handle
⑤ Budget Buy
  • 3.0
  • Pros:
    • 5 min Quick Jump Start™ charger
    • Equipped with a smart soft motor
    • Ideal for budget-conscious worker
① Best Overall
5.0
Pros:
  • Very powerful 20V cordless grinder
  • Fast-acting disc/wheel replacement
  • Responsive trigger with lock-off shift
② Runner Up
4.5
Pros:
  • Brushless motor output -8,500 RPM
  • Snap-on X-LOCK for wheel changes
  • Automatic speed & torque technology
③ Deluxe Pick
4.0
Pros:
  • Robust Powerstate brushless motor
  • Utilizes a comfortable paddle switch
  • Added sidebar for precision & power
④ Value Pick
3.5
Pros:
  • Cost-effective 20V cordless grinder
  • Made in the US with a 3-yr warranty
  • Comfy 3-position overmold handle
⑤ Budget Buy
3.0
Pros:
  • 5 min Quick Jump Start™ charger
  • Equipped with a smart soft motor
  • Ideal for budget-conscious worker

Best Cordless Angle Grinder Reviews

1. Dewalt DCG412B 20V MAX Cordless Angle Grinder

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The Dewalt DCG412B 20V is literally loaded with highly functional features, yet it still manages to rival many of its competitors in terms of price.

That said, where entirely does it stack up in regards to performance with the rest of the grinders we’ve reviewed here today? Well, let’s find out, shall we…

Review

A lot of cordless grinders on the market attempt to replicate the performance of what a corded angle grinder offers. But few, if any, actually attain such a goal.

But the Dewalt DCG412B is a cordless grinder that accomplishes such a stupendous triumph with top-notch engineering that makes most corded angle grinders seem somewhat inferior in comparison.

We’re talking about a cordless grinder that pumps out over 8,000 RPM and is powered by a high-capacity 20V 4.0Ah li-ion battery, that will tirelessly keep cutting and grinder without missing a beat.

The Dewalt DCG412B utilizes a rather unique design in comparison to the other 4-1/2 inch angle grinders on the market. This over-under handle design features a convenient trigger switch with a safety lock-off switch that is cleverly situated right above the trigger. With respect to design and ergonomics, the DCG412B is impeccably assembled like the tail end of a Ferrari Enzo. 

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The Dewalt DCG412B is about as heavy-duty as it gets, which is why welders, plumbers, mechanics, craftsmen, and construction workers, regularly use it for their everyday projects.

While this is the type of grinder that your average professional contractor will proudly cut, grind and polish, it’s also a cordless grinder that every DIY weekend warrior should aim to own.

The DCG412B comes fitted with a bulky and comfortable 2-position adjustable handle that allows you to attack gritty materials from different angles. It also has a low-profile gearbox head and the gears themselves are engineered entirely out of metal so that mechanical failure is vastly reduced.

The DCG412B can be fitted with either a 4-1/2 inch wheel or a 5-inch wheel. This is a feature that very few cordless angle grinders possess, and only further adds to the ridiculous amount of swagger that the DCG412B already showcases.

Like all quality angle grinders, the Dewalt DCG412B makes use of a quick-release spindle lock that allows you to change discs effortlessly with the hassle of fumbling around with pesky Allen Keys or on-tool wrenches.

Finally, with the Dewalt DCG412B weighing a mere 4 lbs, it’s obviously lightweight enough to transport with ease and is also a pure delight to maneuver in confined spaces. 

PROS

  • Tool-free wheel removal with Dewalt’s Quick-Change™ system
  • Incredibly powerful cordless grinder generating over 8,000 RPM
  • Awesome over-under handle with handy 2-finger trigger switch  
  • Very versatile grinder that can be used with 4-1/2″ or 5″ wheel 

CONS

  • You’ll need another battery to rotate as the DCG412B is thirsty
  • Not much to complain about with the DCG412B, except the price

2. Makita XAG20Z 18V LXT BL 4-1/2 Cordless Angle Grinder

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One of their most popular cordless grinders on the market, the Makita XAG20Z, comes out swinging like Mike Tyson after the opening bell.

The Makita XAG20Z asserts its dick-swinging dominance like no other with its 18-volt lithium-ion powered battery.

Review

With the Makita XAG20Z, performance metrics are brought to life by Makita’s BL™ brushless motor that possesses remarkable efficiency thanks to the brushless motor’s ability to remove excessive heat under load.

Apart from the outstanding power that the XAG20Z produces, you’ll also have greater control while wielding it due to Makita incorporating a variable speed control feature. You will be able to easily adjust the RPM range between 3,000-8,500 via a dial, so you can appropriately tackle a multitude of tasks in complete control.

Now while you could constantly alter the grinder speed manually with the XAG20Z like some sort of prehistoric neanderthal attempting complete a Rubik’s Cube blindfolded. Or, you could let technology take the reins and automate this minuscule task with absolute ease.

Makita has encompassed what is called Automatic Speed Change™ technology which magically adjusts the grinder’s speed and torque during operation. This performance tweak might be deemed unnecessary by some experts, but if you’re using a grinder daily, a little high-tech voodoo could help take the guesswork out of the equation.

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Makita proudly beat their own drum about the electric brake system fitted to the XAG20Z that stops the grinding wheel from spinning in less than two seconds for safety and maximum productivity.

They have also made use of what is called Active Feedback Technology (AFT) which will turn the motor off if the wheel gets blocked, so you don’t have to worry about it overheating.

Makita has gone above and beyond with the XAG20Z by adding some mesh protective intake covers to minimize any potential debris affecting the motor.

Couple that with their very own Star Protection Computer Controls™ system which has been designed to protect the brushless motor from overload and excessive discharging, and you’ve got yourself one immensely resilient grinder.

There are a bunch more features that we could ramble on about with the XAG20Z that have been designed for increased efficiency, including; a 3-stage LED battery indicator, spiral bevel gears, paddle switch, soft start, and more.

PROS

  • Powered by Makita’s BL™ brushless motor for enhanced efficiently  
  • Comfortable rubberized slimline body with soft grip construction    
  • Auto adjusts both speed & torque with Automatic Speed Change™ 
  • Equipped with an electric brake to stop the grinder wheel in 2 secs 

CONS

  • Not the lightest cordess grinder on the market as it weighs 5.7 lbs
  • Definitely a grinder that is more suitable for professional contractors

3. Milwaukee 2780-20 M18 Fuel Cordless Angle Grinder

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The Milwaukee 2780-20 is a superbly constructed cordless grinder that has been engineered for professional contractors.

With a range of features and high-tech attributes you expect from a Milwaukee, this little beast will power through a plethora of dense materials with ease.

Review

You immediately gain a lasting impression with the M18 2780-20 that Milwaukee is heavily focused on the finer details, and that is abundantly evident as soon as you grasp the comfortable anti-vibration control handle.

Milwaukee has obtained a reputation for manufacturing high-quality and durable tools that get the job done without any exceptions. Like most other Milwaukee cordless tools, this angle grinder also comes with Milwaukee’s unique electronic motor protection which prevents overheating.

The Milwaukee 2780-20 is about as stout as any cordless angle grinder. You’ll find that many professionals make use of this savage M18 grinder to ruthlessly brutalize tough metal materials on a daily basis. The 2780-20 can achieve these rugged feats with its Powerstate™ brushless motor that pumps out a blistering 8,000 RPM. 

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The Milwaukee 2780-20 makes use of one of the most sophisticated brushless motors on the market. The colossal amount of power this cordless angle grinder possesses surpasses the majority of corded angle grinders in terms of performance.

It’s also fitted with a burst-resistant wheel guard that provides enhanced safety so you can securely grind and cut for extended periods with confidence. The tool-less quick-change wheel guard and restart protection work together to prevent accidental startups and injuries.

In summary, the Milwaukee 2780-20 is one of the best cordless angle grinders you could purchase for serious DIY works and you’ll likely own it for a lifetime without a single hiccup.

It’s an exceedingly powerful cordless grinder and can cope with a range of heavy-duty tasks like cutting metal pipes and ceramic tiles. You really can’t go wrong with the Milwaukee 2780-20.

PROS

  • Shockingly powerful 6 amp motor blasts out a blistering 8,000 RPM
  • Brilliant cut capacity that has been optimized for metal applications 
  • Super durable design that is fitted with a burst-resistant wheel guard
  • Vastly increased runtime with Milwaukee’s Redlithium battery tech

CONS

  • Battery & charger not included – tool only option without upgrading
  • The M18 battery is one of the more expensive angle grinders listed

4. Craftsman CMCG400B 20V Cordless Angle Grinder

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The Craftsman CMCG400B 20V cordless angle grinder is an affordable grinder that holds its own with some of the more expensive models covered.

It has all of the essential features you’d expect to see in a cordless angle grinder and for a cost-effective alternative, it really does have a tremendous amount of power.

Review

The Craftsman CMCG400B distinguishes itself and sheds its DeWalt-like knockoff skin by generating an impressive 8,500 RPM cutting speed. Both the brushless motor and transmission are housed within a stout metal casing for protection.

Fabrication and performance metrics like this will enable you to make a whole horde of quick cuts with great precision. The CMCG400B is powered by the Craftsman dependable 20-Volt lithium battery.

Now while the specs mentioned here with the Craftsman CMCG400B are not something of legend that will blow the Cheeto dust off your ungroomed beard with great astonishment. they are very respectable for a cordless angle that cost half the price of the premium models available today. 

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The Craftsman CMCG400B also has a solid ergonomic design that provides a comfortable, secure grip, so you won’t have to worry about the grinder slipping out of your hands on the job. Seems like they’ve taken a page out of DeWalt’s book in the design department with its 3-position handle.

One downside with this grinder is that you’ll have to buy the 20V batteries and charger separately. I guess that’s where things get messing, and costly, but it seems that’s quite the conundrum with any power tool that you purchase as a bare tool.

The last attribute that needs to be discussed with the Craftsman CMCG400B, is its weight. It manages to tip the scale at a little more than 6 lbs, so it’s a bit heavier than most cordless angle grinders.

PROS

  • Solid design and construction with highly responsive trigger switch   
  • Easily alter the guard position with the tool-free guard release feature
  • Comfortable 3-position handle with overmold design added versatility
  • Backed by Craftsman’s 3-year warranty with excellent local support

CONS

  • Quality low-cost cordless angle grinder but not exactly high quality
  • Listed as a small angle grinder but is more on the big and bulky side

5. SKIL AG290202 20V 4-1/2 Inch Cordless Angle Grinder

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The SKIL AG290202 is one of the best cordless angle grinders for those that are searching for a cost-effective cordless grinder that still ticks all the boxes.

So if you’re the type of sensible character that is more fiscally conscious and would rather spend your hard-earned money on more rewarding things like beer, the AG290202 might be just the cordless angle grinder for you. 

Review

The SKIL AG290202 really is the ideal cordless angle grinder for attempting to tackle and accost an entire legion of home improvement projects. This obnoxious little red & black bundle of battery fuelled joy will eagerly help you finish off any grinding, sanding, sharpening, and polishing works.

The tool comes with a PWRCore 20 amp Lithium battery designed with a special cooling system that prolongs the battery’s lifespan. Now while the PWR Core 20 Lithium Battery technology sounds like it’s the revolutionary battery technology you’ve been patiently waiting for, it’s not all that spectacular when using SKIL’s 2.0Ah battery.

So if you already don’t own a SKIL PWR Core 4.0Ah battery variation, we recommend you consider getting one if the SKIL AG290202 is the grinder you do choose.

The AG290202 is equipped with a powerful motor that can produce up to 8500 RPM, which is very impressive for a cordless grinder. The overall build quality of the AG290202 is pretty good and we’d deem it more than adequate in terms of durability for withstanding everyday DIY jobs. 

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At this stage of the article, you’re probably wondering, where’s the fancy paddle switch and premium quality brushless motor that we’ve all become accustomed to with cordless angle grinders?

While it would be great to have all of the above high-tech wizardry incorporated into the AG290202, it’s not exactly feasible or logical considering the AG290202’s price point.

SKIL seems to have found a way to produce quality power tools like the AG290202 while utilizing cost-effective components that fulfill the needs of DIYers who are merely attempting to swiftly complete projects on a budget.

That said, we like a lot about the AG290202, including the dual-function lock-on switch which makes sure that the grinder doesn’t start up by accident, to reduce the risk of possible injuries.

The grinder’s got a 3-position side handle you can easily move to be able to reach some tricky areas where other tools can’t. The AG290202 also utilizes a spindle lock that helps you change wheels in a matter of seconds. The grinder also has onboard wrench storage that is housed nicely in the side handle. 

PROS

  • A cost-effective cordless grinder for the budget-conscious worker    
  • Comfortable 3-position side handle neatly stores on-tool wrench
  • Smart soft start feature greatly reduces wear & tear on the motor 
  • Quick Jump Start™ charger recharges a flat battery back in 5 mins

CONS

  • Not the ideal angle grinder for heavy-duty construction type works 
  • Not as comfortable in hand compared to a 3-position handle model

Best Cordless Angle Grinder FAQ.

What are the Best Cordless Angle Grinders?

If you’ve ever owned any type of cordless grinder, you’ll probably forever opt for the cordless option in the majority of circumstances.

Unless you’re attacking a super-dense piece of material that really requires that extra gusto that the best angle grinder for the money offers, you’d unlikely reach for the latter given the choice.

Any decent cordless angle grinder with a brushless motor can generate a substantial amount of torque and speed, with some high-end grinders like the DEWALT DCG413R2 producing up to 9,000 RPM. With that kind of power, it would be far-fetched to encounter and job around the home that you could not successfully complete.

Now while the DEWALT DCG413R2 might be the exception, any brushless angle grinder with over 7,500 RPM should suffice for a multitude of tasks around the home or workshop.

Although, if you’re a construction worker contemplating going cordless because you’re sick and tired of running extension leads, going with something like the DEWALT DCG413R2 might be worthwhile.

What are the Best Angle Grinders for Beginners?

Whether you’re interested in purchasing a cordless grinder or a corded angle grinder, there are a few prerequisites that you should prioritize your purchase around. If you’re all about cordless grinders, you should consider opting for angle grinders that utilize brushless motors and larger-capacity lithium-ion batteries.

Generally speaking, the more reputable the brand is, the greater the likelihood of success and satisfaction. Why is that? Because the top established brands in the tool industry devote a significant about of their budget to research & development.

This gives them the ability to manufacture and test these expensive power tools so the finished product is the well-refined tool you expect and not the future failure that lesser-known brands might deliver to market.

Apart from your specific needs and the build quality of the angle grinders available, you should be pondering the features included and how they will actually benefit you.

We recommend you contemplate selecting angle grinders that make use of a paddle switch, easy-to-rotate wheel guard, lock-on switch, a multi-position ergonomic handle, and a brushless motor if it’s of the cordless variety.

What Are The Best Angle Grinders For Beginners
Image: Andrew Thiessen

What is the Best Angle Grinder Regardless of Price

So are we talking 4-1/2-inch grinders of the cordless kind where you’re after the absolute best and money is no object? 

If so, then we’d say go for that extra 1/2-inch and grab yourself the DEWALT DCG414T1.

The DCG414T1 is powered by DeWalt’s Flexvolt battery technology and has damn near every conceivable bell and whistle you’d anticipate a top-tier angle grinder would possess.

But, keep in mind, while that additional 1/2-inch that the DEWALT DCG414T1 offers might make you a happy camper, your other half will be anything but content when she see’s the credit card statement.

In other words, size matters in many mysterious ways, and be prepared to pay one way of the other when purchasing the DEWALT DCG414T1.

What Is The Best Angle Grinder Regardless Of Price
Image: DeWalt Mania

FINAL VERDICT

The Dewalt DCG412B takes the cake here. It has everything attribute you’d want from an angle grinder and simply outperforms any other cordless grinder in the same price range.

Another advantage the DCG412B has over the competing grinders we covered here in this review, is that it allows you to utilize both a 4-1/2 inch and 5-inch wheel. 

You really are getting tremendous value with the DCG412B, and it will likely be a power tool you own for a lifetime. 

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In Conclusion

So that’s a wrap for the best angle grinder of the cordless variety. We hope that you found the new grinder of your dreams.

Now while you could pick any one of these reputable little battery-powered critters and get to cutting anything you desire, you should ideally take a moment to consider what is the best grinder for your specified needs.

While we’ve mostly banged on about fancy features and brute power for the majority of this in-depth review, we tried to objectively analyze all the nuances that highlight each tool’s attributes, so you can make a decision with the utmost confidence.