DeWalt DCG415 Angle Grinder
Angle Grinder
$199

DeWalt

DeWalt DCG415 Angle Grinder

DeWalt's Power Detect flagship grinder: it senses larger batteries and raises output to 1,350 watts, spinning to a class-leading 9,000 RPM. The Kickback Brake and E-Clutch electronics shut the wheel down on pinch events before the tool wrenches your wrist.

Bare Tool
$199
Kit
$279
Platform
DeWalt 20V Max
Weight
3.9 lbs (bare)
Best for: 20V Max users who want the smartest safety stack (kickback brake + clutch) in a cordless grinder

Specifications

Category
Angle Grinder
Battery Platform
DeWalt 20V Max
Voltage
20V
Motor
Brushless
Model
DCG415B
Weight
3.9 lbs (bare)
Released
2020
Wheel Size
4-1/2 / 5 in
No-Load Speed
9,000 RPM
Switch
Paddle
Max Output
1,350 W
Spindle
5/8-11

Features

Electric BrakeKickback BrakeE-Clutch

Pros

  • Class-leading 9,000 RPM and 1,350W output with a big battery — Pro Tool Reviews measured it at the top of the 20V class.
  • The Kickback Brake genuinely fires on wheel pinches; owners describe it saving wrists on rebar cuts.
  • Power Detect scales output up with 8Ah+ packs, so the tool grows with your battery investment.
  • At under 4 lbs bare it is light for the power class, helping overhead and fatigue-prone work.
  • E-Clutch stops the driveline on bind-ups instead of spinning the tool around the wheel.
  • One-touch guard rotates without tools and locks positively.

Cons

  • Headline power requires an 8Ah or larger battery — on compact packs it is a mid-pack grinder.
  • Runtime under sustained load is the class complaint: grinding is where cordless still taxes batteries hardest.
  • The brake's abrupt stop takes getting used to and can jerk cut-off wheels if you feather the paddle.
  • Kit pricing with the big battery pushes $279+, eroding the value story.
  • DeWalt's 3-year warranty trails Milwaukee's 5-year coverage on the competing 2880.
  • No variable speed for surface-prep and polishing tasks.

Common Questions

What does Power Detect actually do?
The grinder senses when a larger battery is fitted and raises output accordingly — with an 8Ah+ pack it delivers 1,350 watts at a class-leading 9,000 RPM, which Pro Tool Reviews measured at the top of the 20V class. On compact packs it's a mid-pack grinder, so the headline power genuinely requires the big battery.
Does the Kickback Brake really work in practice?
Owners describe it firing on real wheel pinches — saving wrists on rebar cuts — and the E-Clutch stops the driveline on bind-ups instead of letting the tool spin around the wheel. The abrupt stop takes getting used to, though, and can jerk cut-off wheels if you feather the paddle.
How heavy is it compared to other cordless grinders?
At 3.9 lbs bare it's one of the lightest in the power class — a real advantage for overhead and fatigue-prone work, and well under Makita's 9.7-lb (with battery) XGT flagship. Add the 8Ah pack that unlocks full power and it gains back some of that, but it stays manageable.
Is it good for polishing and surface prep?
Not really — there's no variable speed, so it runs flat out at 9,000 RPM, which is too fast for polishing pads and touchy flap-disc work. It's built as a cutting and grinding tool; if RPM control matters, look at variable-speed rivals like Flex's FX3171A or Metabo HPT's G3612DVE.
What's the real-world runtime story?
Grinding is the hardest thing you can ask of a cordless battery, and sustained load drains packs quickly — the standard complaint for the whole category, this model included. Kit pricing with the big battery pushes $279+, and DeWalt's 3-year warranty trails Milwaukee's coverage on the competing 2880.

Compare the DeWalt DCG415 Angle Grinder

Milwaukee M18 Fuel 2880 Angle Grinder
$199
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Milwaukee's braking M18 Fuel grinder, rated equivalent to an 11-amp corded tool with an 8,500 RPM brushless motor. The paddle-switch no-lock configuration is the OSHA-friendly pick; slide-switch and variable-speed siblings (2888) fill out the family.

Corded-class powerRapid Stop brakePaddle switch
Milwaukee M1818VBrushless
Best for: M18 users cutting and grinding metal daily who want corded power without a generator
Full specs & owner notes
Flex 24V FX3171A Variable Speed Angle Grinder
$199
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Flex's flagship 24V grinder, part of the brand's 2021 North American relaunch. A sensor-free brushless motor spins 4-1/2 or 5-inch wheels at up to 10,000 RPM - the highest top speed in this roundup - with touch-control speed settings of 3,500/5,000/7,000/10,000 RPM. Anti-kickback sensing stops the motor on bind-up, guard adjustment is one-step tool-free, and the vibration-suppression side handle tames buzz. FX3171A is the no-lock paddle version; FX3181A is the side-switch sibling. THERMA-TECH heat management and 24V packs push it toward corded-class sustained output.

10,000 RPM class-leading speed4-speed touch controlKickback sensor shutoff
Flex 24V24V4.2 lbs (bare)Brushless
Best for: Flex 24V adopters and fabricators who want the fastest wheel speed in the cordless 5-inch class plus true speed settings for flap-disc and blending work
Full specs & owner notes
Makita 18V LXT XAG04 Angle Grinder
$169
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Makita's long-running brushless LXT grinder with Automatic Speed Change: it drops RPM and raises torque under load to keep the wheel moving. The slide switch with lock-on suits continuous grinding; a paddle-switch sibling (XAG09) covers no-lock jobsites.

ADT load sensingSlide switchLXT value
Makita 18V LXT18V5.6 lbs (with battery)Brushless
Best for: LXT owners who prefer a slide-switch grinder with lock-on for long, steady cuts
Full specs & owner notes
Metabo HPT MultiVolt G3612DVE Angle Grinder
$249
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The October 2024 successor to Metabo HPT's original G3612DA, with a 1500W-max brushless motor the company rates at 18% more power than the outgoing model. A 6-position dial spans 3,200-10,000 RPM plus an auto mode, and the safety package includes an electric quick brake, anti-kickback protection, soft start, and zero-voltage restart protection. Dust- and water-resistant switch, tool-less wheel guard, and dual LED work lights round it out. Being MultiVolt, it runs on 36V packs or Metabo HPT's AC adapter - the only grinder in this class that can go corded. G3612DVFQ6 is the paddle-switch twin; G3615DVFQ6 is the 6-inch big brother.

1500W max output, 18% more power6-speed dial up to 10,000 RPMRuns on battery or AC adapter
Metabo HPT MultiVolt36V5.1 lbs (bare)Brushless
Best for: MultiVolt users and shop/field hybrid workers who want 36V power, a true variable-speed dial, and the option to plug into AC for all-day bench grinding
Full specs & owner notes
Bosch PROFACTOR 18V Spitfire GWS18V-13CN Angle Grinder
$259
Angle Grinder

Bosch's PROFACTOR-tier 'Spitfire' flagship grinder, pairing a BITURBO brushless motor with CORE18V High Power batteries to claim 13-amp corded-equivalent output. Runs 5- or 6-inch wheels at 9,000 RPM on a standard 5/8-11 spindle, with an electric brake, KickBack Control that shuts the tool off in a bind, restart protection, and a Vibration Control two-position side handle. Connected-ready for the Bosch PRO360 app (module sold separately); the GWS18V-13PN is the paddle-switch sibling and the GWX18V-13CN swaps to X-LOCK.

13A corded-class BITURBO powerKickBack Control bind-up shutoffPRO360 connected-ready
Bosch 18V18V5.1 lbs (bare)Brushless
Best for: Bosch/AMPShare 18V pros who want corded-13A grinding power, a 6-inch wheel option, and jobsite tracking without leaving the 18V platform
Full specs & owner notes
Ridgid 18V Brushless R86047 Angle Grinder
$139
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Ridgid's current 18V flagship grinder (May 2022), superseding the Octane-era R86042B with a brushless motor Ridgid rates at up to 25% more power than its predecessor. Runs 4-1/2-inch wheels at 9,000 RPM with an electric brake, a grip-spanning paddle switch, tool-free guard and wheel changes via a folding-tab flange nut, and a 2-position side handle. Sold exclusively at Home Depot; registering unlocks Ridgid's free-parts-and-service Lifetime Service Agreement.

25% more power than prior genLifetime Service AgreementTool-free wheel and guard changes
Ridgid 18V18V4.5 lbs (bare)Brushless
Best for: Ridgid 18V owners and value-minded users who want a brake-equipped, paddle-switch grinder with a lifetime service agreement for light-to-medium metal work
Full specs & owner notes