The 10 Best Cordless Angle Grinders
Battery-powered angle grinders ranked from live Amazon data — cutting, grinding, and polishing power without a cord.
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.
Where the deals are
The tools ranked here come from DEWALT, Makita, Milwaukee, AOBEN, SEESII, 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 2026-09-19. 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 full ranking
#1
Best Overall
DEWALT
DEWALT 20V MAX Angle Grinder Tool Cordless Brushless, 4-1/2 Inch, Paddle Switch and Kickback Brake, Tool Only (DCG413B)
4.8
9,576 reviews
Score 88/100
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.
- Battery
- 20V MAX
- Wheel Size
- 4-1/2"
- Max Speed
- —
- Safety Brake
- Kickback Brake
- Accessories
- Bare tool
Pros
- 9,576 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
#2
Makita
Makita XAG04Z 18V LXT Lithium-Ion Brushless Cordless 4-1/2" / 5" Cut-Off/Angle Grinder, Tool Only
4.8
3,122 reviews
Score 85/100
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. 3,122 reviews at 4.8 stars.
- Battery
- 18V LXT
- Wheel Size
- 4-1/2" to 5"
- Max Speed
- —
- Safety Brake
- Active Feedback-sensing Technology (AFT)
- Accessories
- Bare tool
Pros
- 3,122 reviews at 4.8 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
Money No Object
DEWALT
DEWALT FLEXVOLT ADVANTAGE 20V MAX Angle Grinder, Paddle Switch, 4-1/2-Inch to 5-Inch, Tool Only (DCG416B)
4.7
3,039 reviews
Score 83/100
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.
- 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
- Kickback Brake and E-CLUTCH stall protection
- 3,039 reviews at 4.7 stars
Cons
- Most expensive grinder in the category
- Bare tool — a FLEXVOLT battery costs extra on top
#4
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)
4.8
2,495 reviews
Score 83/100
The M18 FUEL pick — a brushless grinder with an Electronic Clutch for kickback protection and a no-lock paddle switch, backed by 2,495 reviews at 4.8 stars. The pick if you're already on Milwaukee M18 batteries.
- Battery
- M18
- Wheel Size
- 4-1/2" to 5"
- Max Speed
- —
- Safety Brake
- Electronic Clutch (kickback protection)
- Accessories
- Bare tool
Pros
- 2,495 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
#5
Best Budget
AOBEN
AOBEN Cordless Angle Grinder 4-1/2 Inch, 21V Battery Grinder Kit, Brushless Motor, 2x4.0Ah Battery & Charger
4.3
929 reviews
Score 77/100
The value pick — a complete cordless kit with two 4.0Ah batteries, a charger, and a case full of wheels for under $60, backed by more reviews than any other kit here. Ready to cut out of the box, no platform required.
- 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
- 929 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
#6
SEESII
SEESII Cordless Angle Grinder 4-1/2 Inch, 10000RPM Brushless Motor, 21V Battery Grinder Tool with 2x 4.0Ah Batteries, 3-Speed
4.4
577 reviews
Score 76/100
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 above the AOBEN kit but with a stronger top speed.
- 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
- 577 reviews at 4.4 stars
Cons
- Pricier than the AOBEN kit with a smaller review base
- Off-brand battery with no wider ecosystem
#7
Milwaukee
Milwaukee 2888-20 18V Cordless 4.5"/5" Grinder w/ Variable Speed, Tool Only
4.8
261 reviews
Score 75/100
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 261 reviews.
- 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, highest rating alongside the DEWALT and Makita bare tools
Cons
- Not brushless, unlike the similarly priced Milwaukee 2880-20
- Smaller review base than the other premium picks
#8
DEWALT
DEWALT 20V MAX Cordless 4-1/2 Inch Paddle-Switch Grinder, Bare Tool Only (DCG408B)
4.7
285 reviews
Score 74/100
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.
- 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
#9
CRAFTSMAN
CRAFTSMAN V20 Angle Grinder, Small, 4-1/2-Inch, Tool Only (CMCG400B)
4.7
2,988 reviews
Score 72/100
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 3,000 reviews at 4.7 stars.
- Battery
- V20
- Wheel Size
- 4-1/2"
- Max Speed
- 8,500 RPM
- Safety Brake
- —
- Accessories
- Bare tool
Pros
- 2,988 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
4.5
315 reviews
Score 62/100
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.
- 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
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.
