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The 10 Best Cordless Angle Grinders
Battery-powered angle grinders ranked from live Amazon data — cutting, grinding, and polishing power without a cord.
Ranked by ToolboxTop10 from Amazon data captured Nov 6, 2026. Rankings and prices are updated several times a week and can change as new data comes in. How we rank
An angle grinder is the tool that cuts, grinds, deburrs, and polishes metal, tile, and masonry, and a cordless one lets you use it anywhere a cord can't reach. Most of the best-sellers here ship as a bare tool with no battery, so check whether a pick is tool-only or a ready-to-use kit, and which battery platform it rides. A grinder spins a 4-1/2" to 5" wheel fast enough to throw sparks and kick back hard if it binds, so weigh safety features like a kickback brake or electronic clutch alongside price and power.
DEWALT DCG413BDEWALT 20V MAX owners: the best cordless grinder, with a kickback brake.
Makita XAG04ZMakita LXT owners who want speed that adjusts to the load.
Milwaukee 2880-20Milwaukee M18 owners who want brushless power and kickback protection.
Milwaukee 2888-20Jobs that need a set speed, like polishing or thin metal.
SEESII AG0200SBest OverallA complete kit with a faster top speed than the AOBEN.
DEWALT DCG408BDEWALT 20V MAX owners who want constant speed under load and full protection.
DEWALT DCG416BMoney No ObjectHeavy grinding with a FLEXVOLT battery and full stall protection.
AOBEN AT-102DA complete grinder kit with two batteries and wheels, no platform needed.
CRAFTSMAN CMCG400BBest BudgetCRAFTSMAN V20 owners who want a cheap, well-rated grinder.
RYOBI PCL445BRYOBI ONE+ owners who want a cheap grinder for occasional work.
Already own batteries?
Batteries only fit their own brand's platform, so the best tool for you is often the best
one that runs on the packs you already have. Here's our top-ranked pick on each platform on this page.
A tool-only model skips the cost of a battery and charger you don't need.
Tools sold as "compatible with" another brand's batteries aren't listed here. They're made by third parties, and the battery brand doesn't warrant them.
Where the deals are
The tools ranked here come from DEWALT, Makita, Milwaukee, SEESII, AOBEN, CRAFTSMAN, and RYOBI. Prices on these brands move week to
week on Amazon, and the deepest cuts usually land around Prime Day and Black Friday.
Every price button on this page opens the live listing, so you always see today's
number, not the one we captured on 2026-11-06. If your pick is over budget
right now, check back in a few days — DEWALT and Makita rotate through sales and bundle
deals often.
The best cordless angle grinder here by a wide margin — 9,500+ reviews at 4.8 stars and 2,000+ bought last month. A brushless DEWALT with a paddle switch and a Kickback Brake that engages with maximum force when it senses a bind-up. Bare tool, so you'll need a 20V MAX battery.
Best for: DEWALT 20V MAX owners: the best cordless grinder, with a kickback brake.
Skip it if: You don't own the batteries; it's tool only.
Battery
20V MAX
Wheel Size
4-1/2"
Max Speed
—
Safety Brake
Kickback Brake
Accessories
Bare tool
Pros
9,641 reviews at 4.8 stars, the most-reviewed grinder in the category
Kickback Brake stops the wheel in 2 seconds or less on average
Runs on the huge DEWALT 20V MAX battery lineup
Cons
Tool only — no battery or charger included
Reviewers note the battery runs down quickly under heavy cutting
The Makita pick — a BL brushless motor with Automatic Speed Change that adjusts speed and torque on the fly, plus Active Feedback-sensing Technology that cuts power if the wheel suddenly binds. 3,158 reviews at 4.7 stars.
Best for: Makita LXT owners who want speed that adjusts to the load.
Skip it if: Long-term durability is your top concern; reviews are mixed.
Battery
18V LXT
Wheel Size
4-1/2" to 5"
Max Speed
—
Safety Brake
Active Feedback-sensing Technology (AFT)
Accessories
Bare tool
Pros
3,158 reviews at 4.7 stars
Automatic Speed Change adjusts torque during operation
AFT shuts the motor off if the wheel is suddenly forced to stop
Cons
Tool only — battery and charger sold separately
Reviewers report mixed durability, with some units failing before the first wheel change
#3
Milwaukee
Milwaukee 2880-20 M18 FUEL Brushless Lithium-Ion 4-1/2 in. / 5 in. Cordless Small Angle Grinder with No-Lock Paddle Switch (Tool Only)
4.82,556 reviews
Score 89/100
Why this score
Star rating 45% of score96/100 → 43 pts
Number of reviews 35% of score100/100 → 35 pts
Features 20% of score55/100 → 11 pts
Has: a brushless motor, a kickback brake, a paddle switch. Missing: a complete kit (everything you need in the box), variable speed.
The M18 FUEL pick — a brushless grinder with an Electronic Clutch for kickback protection and a no-lock paddle switch, backed by 2,556 reviews at 4.8 stars. The pick if you're already on Milwaukee M18 batteries.
Best for: Milwaukee M18 owners who want brushless power and kickback protection.
Skip it if: You don't own M18 batteries; it's tool only.
Battery
M18
Wheel Size
4-1/2" to 5"
Max Speed
—
Safety Brake
Electronic Clutch (kickback protection)
Accessories
Bare tool
Pros
2,556 reviews at 4.8 stars, 2,000+ bought last month
Brushless motor with Electronic Clutch kickback protection
Runs on the wide Milwaukee M18 battery platform
Cons
Tool only — no battery or charger included
Reviewers say the paddle switch placement takes getting used to
The one to reach for when the job needs a dialed-in speed — five settings from 3,500 to 8,500 RPM, a paddle switch, and a brake that stops the wheel in under 2 seconds. 4.8 stars across 285 reviews.
Best for: Jobs that need a set speed, like polishing or thin metal.
Skip it if: You want brushless; the 2880-20 is close in price.
Battery
M18
Wheel Size
4-1/2" to 5"
Max Speed
3,500-8,500 RPM (5-speed)
Safety Brake
Electronic brake (under 2 sec.)
Accessories
Bare tool
Pros
5 speed settings from 3,500 to 8,500 RPM
Electronic brake stops the wheel in under 2 seconds
4.8 stars, tied for the top rating with the DEWALT DCG413B and Milwaukee 2880-20
Cons
Not brushless, unlike the similarly priced Milwaukee 2880-20
A second complete kit option — two 4.0Ah batteries, a charger, cutting and flap wheels, and a carrying bag, with three speeds up to 10,000 RPM. Priced a little below the AOBEN kit, with a faster top speed.
Best for: A complete kit with a faster top speed than the AOBEN.
Skip it if: You want the most-reviewed kit; the AOBEN has more reviews.
Battery
21V
Wheel Size
4-1/2"
Max Speed
10,000 RPM (3-speed)
Safety Brake
—
Accessories
2 batteries, charger, wheels, bag
Pros
Two 4.0Ah batteries, charger, and carrying bag included
3-speed brushless motor up to 10,000 RPM
713 reviews at 4.4 stars
Cons
Smaller review base than the AOBEN kit
Off-brand battery with no wider ecosystem
#6
DEWALT
DEWALT 20V MAX Cordless 4-1/2 Inch Paddle-Switch Grinder, Bare Tool Only (DCG408B)
4.7378 reviews
Score 88/100
Why this score
Star rating 45% of score94/100 → 42 pts
Number of reviews (counted 1.1x, newer listing) 35% of score100/100 → 35 pts
Features 20% of score55/100 → 11 pts
Has: a brushless motor, a kickback brake, a paddle switch. Missing: a complete kit (everything you need in the box), variable speed.
A newer DEWALT paddle-switch grinder that maintains constant speed under load, with up to 850 MWO and 9,000 RPM no-load. Anti-rotation Kickback Brake and E-Clutch, and 1,000+ bought last month despite a smaller review base so far.
Best for: DEWALT 20V MAX owners who want constant speed under load and full protection.
Skip it if: You want a long review history; it's a newer listing.
Battery
20V MAX
Wheel Size
4" to 5"
Max Speed
9,000 RPM (no load)
Safety Brake
Kickback Brake + E-Clutch
Accessories
Bare tool
Pros
Up to 9,000 RPM (no load) and 850 MWO from the brushless motor
Kickback Brake and E-Clutch anti-rotation protection
1,000+ bought in the past month
Cons
Fewer reviews than the other DEWALT picks here (newer listing)
Bare tool — no battery, charger, or wrench included
#7
Money No Object
DEWALT
DEWALT FLEXVOLT ADVANTAGE 20V MAX Angle Grinder, Paddle Switch, 4-1/2-Inch to 5-Inch, Tool Only (DCG416B)
4.63,088 reviews
Score 87/100
Why this score
Star rating 45% of score92/100 → 41 pts
Number of reviews 35% of score100/100 → 35 pts
Features 20% of score55/100 → 11 pts
Has: a brushless motor, a kickback brake, a paddle switch. Missing: a complete kit (everything you need in the box), variable speed.
The most capable grinder here — up to 54% more power when paired with a FLEXVOLT battery, plus a Kickback Brake and an E-CLUTCH that shuts the motor down in under a tenth of a second on a pinch or stall. If money's no object, this is the one to own.
Best for: Heavy grinding with a FLEXVOLT battery and full stall protection.
Skip it if: You're on a budget; it's the priciest and needs a costly battery.
Battery
20V MAX / FlexVolt
Wheel Size
4-1/2" to 5"
Max Speed
9,000 RPM
Safety Brake
Kickback Brake + E-Clutch
Accessories
Bare tool
Pros
Up to 1,550 max watts out and 9,000 RPM with a FLEXVOLT battery
The value pick — a complete cordless kit with two 4.0Ah batteries, a charger, and a case full of wheels for about $80, backed by more reviews than any other kit here. Ready to cut out of the box, no platform required.
Best for: A complete grinder kit with two batteries and wheels, no platform needed.
Skip it if: You want kickback protection or a brand-name battery.
Battery
21V
Wheel Size
4-1/2"
Max Speed
9,500 RPM (3-speed)
Safety Brake
—
Accessories
2 batteries, charger, wheels, case
Pros
Two batteries, charger, and 6 wheels included
984 reviews at 4.3 stars, most-reviewed kit in the category
Brushless motor with 3 adjustable speeds up to 9,500 RPM
Cons
Off-brand 21V battery with no wider tool ecosystem
No kickback brake or electronic clutch
#9
Best Budget
CRAFTSMAN
CRAFTSMAN V20 Angle Grinder, Small, 4-1/2-Inch, Tool Only (CMCG400B)
4.73,009 reviews
Score 77/100
Why this score
Star rating 45% of score94/100 → 42 pts
Number of reviews 35% of score100/100 → 35 pts
Features 20% of score0/100 → 0 pts
Missing: a complete kit (everything you need in the box), a brushless motor, a kickback brake, variable speed, a paddle switch.
A straightforward, well-reviewed bare tool on the CRAFTSMAN V20 platform — 8,500 RPM, a tool-free guard, and a cast metal gear housing to dissipate heat, backed by nearly 3,009 reviews at 4.7 stars.
Best for: CRAFTSMAN V20 owners who want a cheap, well-rated grinder.
Skip it if: You want brushless or a kickback brake.
Battery
V20
Wheel Size
4-1/2"
Max Speed
8,500 RPM
Safety Brake
—
Accessories
Bare tool
Pros
3,009 reviews at 4.7 stars
Tool-free guard adjustment and cast metal gear housing
Shares batteries with CRAFTSMAN V20 tools
Cons
Brushed motor, not brushless
No kickback brake or electronic clutch
#10
RYOBI
RYOBI PCL445B 18V ONE+ Cordless 4-1/2 in. Angle Grinder, Tool Only
4.4380 reviews
Score 75/100
Why this score
Star rating 45% of score88/100 → 40 pts
Number of reviews (counted 1.1x, newer listing) 35% of score100/100 → 35 pts
Features 20% of score0/100 → 0 pts
Missing: a complete kit (everything you need in the box), a brushless motor, a kickback brake, variable speed, a paddle switch.
The pick if you're on RYOBI ONE+. A 9,000 RPM motor, spindle lock for fast wheel changes, and a die-cast metal gear case, all for under $60 — just add a ONE+ battery.
Best for: RYOBI ONE+ owners who want a cheap grinder for occasional work.
Skip it if: You want brushless or a kickback brake.
Battery
ONE+ 18V
Wheel Size
4-1/2"
Max Speed
9,000 RPM
Safety Brake
—
Accessories
Bare tool
Pros
Cheap entry point on the huge RYOBI ONE+ platform
9,000 RPM motor with spindle lock for quick wheel changes
Die-cast metal gear case for durability
Cons
Tool only — no battery or charger
Not brushless, and no kickback brake
How we rank
Every tool gets one score from 0 to 100, weighted
45% on its star rating,
35% on how many people have reviewed it (more reviews = more
confidence the rating is real), and 20% on the features that
matter for the job. The list is ordered by that score. Best Overall is the top-scoring
pick with at least 4.0 stars and 30 reviews (a ready-to-use kit wins a close call);
Best Budget is the top score at or under $80 that costs less than
Best Overall; and Money No Object is the one to buy if price is no object.
The features score is built from a complete kit (25%), a brushless motor (20%), a kickback brake (20%), variable speed (20%), a paddle switch (15%), capped at 100. The review-count score is on a log scale, so each tenfold jump in reviews adds the same amount, and 200 or more reviews gets full marks. A listing under two years old with at least 30 reviews has its count scaled up for the shorter time it has had to collect them, never more than double. Open Why this score on any tool to see its numbers.
What changed
We re-check every listing on this page on a rotation. The most recent changes:
Badges now follow the scores instead of hand picks. Best Overall is now the SEESII AG0200S (was the DEWALT DCG413B). Best Budget is now the CRAFTSMAN CMCG400B (was the AOBEN AT-102D).
Prices, ratings and review counts re-checked on every listing. Biggest price moves: the DEWALT DCG408B dropped from $129 to $117; the CRAFTSMAN CMCG400B dropped from $64.90 to $59; the Makita XAG04Z dropped from $129 to $117.50.
All 10 picks kept and re-checked. New avoid pick: the GEARWAVE kit's listing is gone, so the Runful 12V mini grinder takes its place; its battery and motor claims contradict its own spec table. The Makita XAG04Z now shows its price only in the cart, so its price here is from our previous check.
Buyer's guide
Bare tool or kit?
A bare tool ships with no battery or charger — worth it if you already own the brand's batteries, useless out of the box if you don't. A kit includes batteries, a charger, and usually a set of wheels. Each pick above says which.
4-1/2" or 5" wheel?
4-1/2" is the standard size for most cutting, grinding, and polishing around the house and shop. A grinder rated for 4-1/2" to 5" gives you the option to size up for masonry or heavier metal work later without buying a second tool.
Brushless or brushed?
Brushless motors run cooler, last longer, and hold speed better under load — worth it if you'll use the grinder often or push it hard. For occasional cutting and grinding, a brushed tool like the CRAFTSMAN or RYOBI bare tools is fine.
What does a kickback brake or E-Clutch actually do?
A grinder wheel that binds in a cut can kick the tool back at you hard. A kickback brake or electronic clutch senses that bind and cuts power or stops the wheel in a fraction of a second. It's a real safety feature, not a marketing bullet — worth prioritizing if you'll be cutting metal regularly.
Which battery platform should I buy into?
Buy on the same platform as tools you already own (DEWALT 20V MAX, Milwaukee M18, Makita 18V LXT, CRAFTSMAN V20, RYOBI ONE+) so one battery lineup covers everything. If you own nothing yet, a self-contained kit like the AOBEN or SEESII avoids the platform lock-in.
How many RPM do I need?
Most cordless angle grinders run 8,500-10,000 RPM, which is plenty for cutting, grinding, and polishing metal, tile, and masonry. A variable-speed tool like the Milwaukee 2888-20 lets you slow down for delicate work like paint removal or polishing, where full speed can gouge the surface.
Tools to avoid
Not everything in the search results deserves your money.
This one would rank dead last on our scale — here's the listing to walk past, and exactly why.
✕ Avoid
Runful
Runful 4000mAh Battery Angle Grinder, 19500RPM Cordless Mini Angle Grinder with Battery
2.828 reviews$17.99
A 12V mini grinder whose listing can't agree with itself: the title promises a 4,000mAh battery and a brushless motor, the spec table lists 10 watt-hours and 5 watts. At 2.8 stars with 45% one-star ratings, any real 18V/20V grinder above is the better buy.
Why we'd skip it
The title advertises a 4,000mAh battery, but the spec table lists 10 watt-hours. A 12V pack of that size would hold about 48 watt-hours, so one of the two figures is wrong.
The title calls it brushless; nothing in the bullets or the spec table backs that up, and the table rates the motor at 5 watts.
The listing itself says a full 3-hour charge gives about 20 minutes of work and advises against using it for long periods.
Changing the wheel means removing a screw with a screwdriver rather than a spindle lock and flange wrench, and the listing gives no wheel size.
45% of its 28 ratings are 1-star (2.8 stars overall).
