Best Cordless Angle Grinder (2026): 5 Picks Scored for Shop and Metal Fabrication
Five cordless angle grinders compared on motor design, wheel diameter, operating speed, included battery packs and manufacturer warranty terms.
By WeldGearLab Editorial
Updated October 9, 2026
Finding the best cordless angle grinder comes down to matching motor power, battery capacity, and safety braking to your shop cutting and grinding tasks. Cordless grinders provide mobility around welding tables and field repairs without dragging extension cords across the workspace. We compared 5 cordless models on motor design, wheel diameter, operating speed, battery kits, and written warranty terms.
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Quick picks
- Best Overall DEWALT DCG413B: Brushless motor, Kickback Brake, electronic brake stopping in 2 seconds or less, and E-Switch no-volt release. Check price on Amazon
- Best Warranty CRAFTSMAN CMCG400B: A Limited Lifetime Warranty in the listing, 8,500 RPM motor speed, and a cast metal gear housing with a 3-position handle. Check price on Amazon
- Best Complete Kit AOBEN 21V Cordless Grinder: Brushless motor with 3 speeds up to 9500 RPM, two 4.0Ah batteries, 2 wheel guards, and 6 cutting, grinding and sanding wheels in a tool case. Check price on Amazon
- Best Compact Cut Off TEENO 16.8V Mini Grinder: Compact 3-inch tool spinning at 19,500 RPM with two 16.8V 2000mAh batteries, up to 1/2 inch cutting depth, and a dual-action safety switch. Check price on Amazon
Compare the picks
| Model | Gear Score | Wheel diameter | Motor type | Speed | Batteries included | Weight | Warranty |
|---|---|---|---|---|---|---|---|
| DEWALT DCG413B | 8.0/10 | 4 1/2 in | Brushless | Not stated | Tool only (not included) | Not stated | Not stated |
| CRAFTSMAN CMCG400B | 7.3/10 | 4-1/2 in | Not stated | 8,500 RPM | Tool only (sold separately) | Not stated | Limited Lifetime Warranty |
| AOBEN 21V Grinder | 7.3/10 | 4-1/2 in | Brushless | 3 speeds, up to 9500 RPM | Two 21V 4.0Ah packs | Not stated | Not stated |
| TEENO 16.8V Grinder | 7.0/10 | 3 in | Not stated | 19,500 RPM | Two 16.8V 2000mAh packs | Not stated | Not stated |
| ZFULVO 16.8V Grinder | 6.4/10 | Not stated | Brushed | 19500 rpm | Two 16.8V 2000mAh packs | 1100 g | Not stated |
Specifications are manufacturer rated, as published on each listing and collected 9 October 2026. Where a listing states a figure two ways, the table shows both.
The picks
| Award | Product | Gear Score About the Gear ScoreThe Gear Score runs from 0 to 10 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick › | |
|---|---|---|---|
DEWALT 20V MAX* Angle Grinder Tool Cordless
|
8.0/10 | Check price on Amazon | |
CRAFTSMAN V20* Angle Grinder, Small, 4-1/2-Inch
|
7.3/10 | Check price on Amazon | |
AOBEN Cordless Angle Grinder 4-1/2 inch
|
7.3/10 | Check price on Amazon | |
TEENO Cordless Angle Grinder Kit
|
7.0/10 | Check price on Amazon | |
ZFULVO Cordless Brush Angle Grinder Kit
|
6.4/10 | Check price on Amazon |
DEWALT 20V MAX* Angle Grinder Tool Cordless
A 20V MAX 4 1/2 inch brushless angle grinder with a Kickback Brake, 2-second wheel stop and no-volt release paddle switch.
Pros
- Brushless motor requires no brush changes
- Brake stops the wheel in 2 seconds or less on average
- Kickback Brake engages on pinch or stall to shut the grinder off
- E-Switch Protection no-volt release and two-stage paddle trigger prevent accidental restart
Cons
- No warranty term is stated in the listing
- Tool only, battery and charger not included
- No operating speed or RPM rating stated in the listing
- No weight specification stated in the listing
CRAFTSMAN V20* Angle Grinder, Small, 4-1/2-Inch
An 8,500 RPM 4-1/2-inch angle grinder with a cast metal gear housing, 3-position handle and Limited Lifetime Warranty.
Pros
- Rated at 8,500 RPM for metal grinding applications
- Limited Lifetime Warranty stated in the listing
- Cast metal gear housing designed to dissipate heat during extended work
- Tool-free guard adjustment and 3-position contoured over-molded handle
Cons
- Tool only, battery and charger sold separately
- Motor type is not stated as brushless
- No kickback brake or electronic wheel stop stated in the listing
- No weight specification stated in the listing
AOBEN Cordless Angle Grinder 4-1/2 inch
A 21V brushless 4-1/2 inch angle grinder kit with 3 speeds up to 9500 RPM, two 4.0Ah batteries, 2 wheel guards and a tool case.
Pros
- Brushless motor with 3 adjustable speeds up to 9500 RPM
- Kit includes two 21V 4.0Ah lithium-ion battery packs and a charger
- Ships with 2 wheel guards, 2 cutting wheels, 2 grinding wheels and 2 sanding wheels
- Standard 7/8 inch arbor with 5/8-11 spindle and spindle lock
Cons
- No warranty term is stated in the listing
- Listing notes battery packs of other brands are not compatible
- No kickback brake mechanism stated in the listing
- Item weight is not stated in the listing
TEENO Cordless Angle Grinder Kit
A compact 3-inch 16.8V cut off grinder spinning at 19,500 RPM with two 2000mAh batteries, dual-action switch and 6 discs.
Pros
- High speed 19,500 RPM motor for cutting small metal profiles
- Compact 3-inch wheel size suited for tight spaces and 1/2 inch cutting depth
- Dual-action start lock requires two buttons to prevent accidental activation
- Kit includes two 16.8V 2000mAh batteries, charger, 6 discs, gloves and case
Cons
- No warranty term is stated in the listing
- Maximum cutting depth limited to 1/2 inch
- Wheel diameter limited to 3 inches rather than standard 4-1/2 inches
- No exact tool weight figure stated in the listing
ZFULVO Cordless Brush Angle Grinder Kit
An 1100g mini cut off tool with a 19500 rpm brushed motor, two 16.8V 2000mAh batteries, 6 cutting wheels and gloves.
Pros
- Spins at 19500 rpm for small metal and wood cutting tasks
- Listing states exact tool weight of 1100g for one-handed operation
- Kit includes two 16.8V 2000mAh batteries, charger, 6 wheels and gloves
- Spindle lock and side toggle switch with rubberized grip
Cons
- No warranty term is stated in the listing
- Motor is a brushed design rather than brushless
- Wheel diameter is not stated in the listing
- Listing has inconsistent switch descriptions, mentioning self-locking and side toggle
How we scored them
Each machine is scored out of 100 on performance, build, value, safety listing and warranty, with the weights published on our How We Pick page. A spec the listing does not publish scores nothing, which is why bare tools without stated warranty terms lose ground to complete kits and models with written coverage.
| Product | Gear Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| DEWALT DCG413B | 8.0 | 30 | 22 | 20 | 7 | 0 |
| CRAFTSMAN CMCG400B | 7.3 | 27 | 20 | 20 | 2 | 4 |
| AOBEN 21V Cordless Grinder | 7.3 | 29 | 20 | 22 | 4 | 0 |
| TEENO 16.8V Mini Grinder | 7.0 | 24 | 19 | 22 | 4 | 0 |
| ZFULVO 16.8V Mini Grinder | 6.4 | 23 | 19 | 20 | 2 | 0 |
Buying guide: how to choose the best cordless angle grinder
Motor design: brushless vs brushed
Brushless motors eliminate carbon brush maintenance and run with higher electrical efficiency. In this comparison, DEWALT and AOBEN publish brushless designs, while ZFULVO states a brushed motor and CRAFTSMAN does not specify motor construction. Brushless motors also support electronic safeguards such as overload shutdown and rapid wheel braking.
Wheel diameter and cutting depth
Wheel size determines cutting depth and surface contact area. Standard 4 1/2 inch grinders like the DEWALT, CRAFTSMAN, and AOBEN handle typical shop grinding and beveling. The smaller 3-inch TEENO mini grinder provides up to 1/2 inch cutting depth for tight spaces and thin tubing, while ZFULVO does not publish an exact wheel diameter.
Operating speed and controls
Operating speed influences cutting rate and abrasive wheel selection. The CRAFTSMAN states 8,500 RPM, while AOBEN features 3 selectable speeds reaching up to 9500 RPM. The smaller 3-inch mini tools from TEENO and ZFULVO spin at 19,500 RPM and 19500 rpm respectively, whereas DEWALT leaves RPM unstated.
Battery platforms and kit contents
Battery inclusion changes real shop readiness. DEWALT and CRAFTSMAN sell their tools as bare units without batteries or chargers, fitting users already invested in 20V platforms. AOBEN supplies two 21V 4.0Ah batteries, two wheel guards, and 6 abrasive discs in a case. Both TEENO and ZFULVO supply two 16.8V 2000mAh battery packs with starter wheels.
Arbor sizing, spindle threading, and wheel selection
Matching abrasive wheels to tool arbors is essential for balance and shop safety. The AOBEN listing publishes standard 7/8 inch arbors with a 5/8-11 spindle, allowing it to mount common 4 1/2 inch wheels, wire cups, and flap discs. The AOBEN, TEENO, and ZFULVO listings all include spindle lock buttons to hold the arbor stationary during changes. AOBEN and TEENO each supply one wrench, whereas ZFULVO includes two wrenches in the box. Abrasive assortments differ across kits: AOBEN supplies 2 cutting wheels, 2 grinding wheels, and 2 sanding wheels; TEENO includes 6 starter discs covering metal, flap, HSS, and diamond; and ZFULVO provides 6 cutting wheels. Always verify that replacement wheels match the arbor diameter and carry a maximum RPM rating equal to or exceeding the tool spindle speed.
Handle positions, housings, and tool weight
Grip control and heat dissipation dictate comfort during extended weld cleaning. CRAFTSMAN features a 3-position auxiliary handle and contoured over-molded grip, allowing the side handle to mount in three orientations for vertical or overhead grinding. CRAFTSMAN also specifies a cast metal gear housing designed to dissipate operating heat. In contrast, the smaller 16.8V tools from TEENO and ZFULVO are built for one-handed cutting in cramped areas. ZFULVO is the only model in this comparison that publishes an exact weight at 1100g, while DEWALT, CRAFTSMAN, AOBEN, and TEENO leave weight figures unstated. For shop fabrication, a bare tool without published weight or battery packs requires factoring in the added mass of the battery platform you select.
Safety features and wheel braking
Grinding wheels store considerable kinetic energy, making active braking and guard design critical shop safeguards. DEWALT features a Kickback Brake that shuts the motor down during bind-ups and stops the wheel in 2 seconds or less, alongside an E-Switch no-volt release. TEENO includes a two-button dual-action safety switch, while AOBEN provides two wheel guards and overload shutdown protection.
Angle grinder safety. Grinding and cutting metal produce hot sparks and flying debris. Always wear safety glasses, a face shield, leather welding gloves, and flame resistant apparel. Keep guards securely installed between your hands and the wheel, verify spindle tightness before power-up, and disconnect battery packs during wheel changes. Review our Safety Disclaimer.
Frequently Asked Questions
What is the best cordless angle grinder?
The DEWALT DCG413B earns our top score for shop metal fabrication due to its brushless motor, Kickback Brake, and rapid 2-second wheel stop. For fabricators who want an all-in-one kit with two batteries and multiple wheels, the AOBEN 21V kit is a practical alternative.
How do I choose an angle grinder for metal fabrication?
Consider whether you need a standard 4 1/2 inch grinder for weld prep or a compact 3-inch cutter for cramped spaces. Match the battery platform to your existing shop tools, or choose a complete kit with included batteries and charger. Check for safety mechanisms like kickback braking and paddle switches with no-volt protection.
How does an angle grinder work?
A battery delivers direct current to an electric motor housed in the tool body. The motor drives a spindle through a right-angle gear set, spinning abrasive or cut off discs at high speed. The spinning disc removes metal through friction grinding or cuts through plate and tubing.
How do I safely use a cordless angle grinder?
Position the wheel guard between yourself and the grinding wheel before switching on the tool. Hold the grinder firmly with both hands using the side handle, and let the motor reach full speed before contacting workpiece metal. Disconnect the battery pack whenever swapping discs or making adjustments.
Are compact 3-inch grinders suitable for metal fab?
Compact 3-inch grinders work well for cutting small brackets, trimming rusty bolts, or modifying thin sheet in cramped quarters. However, with cutting depths capped at 1/2 inch, they cannot replace standard 4 1/2 inch grinders for beveling plate or cleaning heavy welds. They serve best as secondary trimming tools in a metal shop.
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About the author
WeldGearLab Editorial is the editorial team behind WeldGearLab. We research product listings, specifications, safety listings and warranty terms, score every pick with the published Gear Score method, and correct errors when readers report them. We do not run our own shop trials; see How We Pick for exactly how picks are made.