DeWalt 20V MAX XR Brushless Cordless 4-1/2 - 5 in Small Angle Grinder with POWER DETECT Tool Technology Kit

20V MAX XR Brushless Cordless 4-1/2 - 5 in Small Angle Grinder with POWER DETECT Tool Technology Kit

Features

  • POWER DETECT tool technology adjusts output when used with high-capacity XR batteries
  • Brushless motor with 1,350 max watts out
  • No-load speed up to 9,000 rpm
  • Built-in kickback brake stops the wheel and shuts off the grinder on a pinch, stall, or bind-up
  • E-CLUTCH anti-rotation system that shuts down the motor in bind-up situations
  • E-Switch Protection: trigger must be cycled after a power interruption to restart
  • Paddle switch
  • Spindle lock for wheel changes
  • Adjustable 2-position side handle
  • Cordless power source (20V MAX system)
  • Includes battery, charger, guard, handle, wrench, flanges, and kit bag
  • 3-year limited warranty (plus 1 year free service and 90 days satisfaction guarantee)

Specifications

Arbor Size 5/8 in
Wheel Diameter 5 in
Battery Type 20V MAX Li-ion
Battery Included Yes (DCB208 20V MAX 8.0Ah)
Battery Voltage 20 V (maximum initial)
Motor Output 1,350 max watts out
No Load Speed (Rpm) 9000
Power Source Cordless
Brushless Yes
Switch Type Paddle
Product Length 12.2 in
Product Width 9.84 in
Product Weight 3.87 lbs
Weight (Oz) 61.92 oz
Handle Type 2-position side handle
Spindle Thread / Arbor 5/8 - 11
Guard Type Included 5 in Type 27 guard
Accessories Included Charger, side handle, wrench, inner and outer flange, kit bag
Charge Time (Hours) 0.75 (charger specification listed)
Warranty 3-year limited; 1 year free service; 90 days satisfaction guarantee
Safety / Protection Kickback brake, E-CLUTCH anti-rotation, E-Switch Protection
Color Yellow/Black

Cordless small angle grinder intended for grinding and cutting. The tool uses POWER DETECT technology to recognize high-capacity XR batteries and maximize output. It has a brushless motor rated for 1,350 max watts out and a no-load speed up to 9,000 rpm. The kit includes a 20V 8.0Ah battery, a charger, and a storage bag.

Model Number: DCG415W1
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DeWalt 20V MAX XR Brushless Cordless 4-1/2 - 5 in Small Angle Grinder with POWER DETECT Tool Technology Kit Review

4.9 out of 5

The DeWalt 20V MAX XR Brushless Cordless Small Angle Grinder, model DCG415W1, has been a game-changer in my workshop. This versatile tool delivers high performance across a variety of tasks, making it a staple for both professional and DIY applications.

Design and Build Quality

Right out of the box, the first thing I noticed was the solid build quality of this angle grinder. The bright yellow and black color scheme is unmistakably DeWalt, and the tool feels robust and durable. Weighing in at just under four pounds (61.92 ounces), it’s on the heavier side, but this weight contributes to its sturdy feel and helps with balance during use. The overall length of 12.2 inches and width of 9.84 inches make it fairly compact and easy to maneuver, even in tighter spaces.

Performance and Power

The brushless motor is a standout feature of this grinder, enhancing both efficiency and durability. The motor's power delivery is smooth and consistent, handling everything from cutting unistrut and pipes to grinding down metal bars with ease. The grinder operates on a 20V MAX* battery, which is included in the kit, and while smaller batteries suffice for lighter tasks, I found that an 8.0Ah battery significantly extended the runtime for more demanding jobs.

The 5-inch wheel diameter is versatile enough for most tasks and the tool’s compatibility with high-capacity XR batteries ensures prolonged use, which is crucial for extended projects. The paddle switch is another highlight, offering a level of control that’s both intuitive and reassuring, especially when working in awkward positions or tight spaces.

Safety Features

Safety is paramount when using power tools, and the DeWalt angle grinder doesn’t disappoint. The kickback brake is a particularly useful feature, engaging quickly to stop the wheel if a pinch or stall occurs. This not only protects the user but also helps to prolong the life of the tool itself. The E-CLUTCH system is another layer of safety, shutting down the motor in the event of a pinch or stall, which adds peace of mind during operation.

One significant oversight, however, is the absence of a Type 1 guard for cutting, which is vital for ensuring user safety when using certain blades. While the grinder comes with a Type 27 guard for grinding, a Type 1 guard should ideally be included in the package or, at the very least, more readily available for purchase. This oversight can be a hassle, especially for those new to angle grinders and unfamiliar with the importance of using the correct guards.

Usability and Comfort

The DeWalt angle grinder scores high marks for usability. The paddle switch design allows for easy, one-handed operation and offers better control compared to traditional on/off switches. The tool also features an oversized nut for changing discs, which can be easily operated even with welding gloves on—an excellent consideration for those wearing protective gear.

One minor inconvenience is the lack of onboard storage for the hex key. While it doesn’t affect the tool’s performance, it means you’ll need to keep track of the hex key separately, which can be a bit of a hassle when you need to change discs frequently.

Battery Life and Efficiency

Battery life is always a concern with cordless tools, and the DeWalt angle grinder performs admirably in this regard. With an 8.0Ah battery, I found that the tool could handle most tasks without frequent interruptions. However, for larger, more continuous jobs, having multiple high-capacity batteries on hand is advisable. The brushless motor’s efficiency helps extend the runtime, and I didn’t notice significant power drops even as the battery started to deplete.

Durability and Maintenance

Durability is another area where this tool excels. After months of regular use, from cutting DIN rails for electrical panels to making precise cutouts in electrical cabinets, the grinder has shown no signs of slowing down. The motor remains cool to the touch even after extended use, which speaks volumes about its efficiency and build quality.

Maintenance is straightforward, with the brushless motor requiring less upkeep compared to its brushed counterparts. The tool’s design also makes it relatively easy to clean and maintain, ensuring long-term reliability.

Final Thoughts

The DeWalt 20V MAX XR Brushless Cordless Small Angle Grinder is a powerful, well-designed tool that delivers on its promises. Its robust build quality, excellent power delivery, and thoughtful safety features make it a worthy addition to any toolkit. While it does have a few minor drawbacks, such as the lack of onboard hex key storage and the omission of a Type 1 cutting guard, these issues are relatively small in the grand scheme of things.

Given its performance, durability, and the convenience of being cordless, I would highly recommend this angle grinder to both professionals and serious DIY enthusiasts. Whether you’re working on metal fabrication, masonry, or general construction tasks, this tool is up to the challenge and then some.



Project Ideas

Business

Mobile Metal Repair & Fabrication

Offer on-site cutting, grinding, and prep for gates, railings, trailers, and farm equipment. The cordless grinder with 8.0Ah battery handles remote jobs without power access. Use cut-off wheels for removal, grind for fit-up, and flap discs for clean finishes; bill hourly plus materials.


Railing and Rust Restoration Service

Prep corroded steel railings, fences, and security doors for repainting. Use wire cups and flap discs to remove rust and old coatings, then clean up edges and welds. Target HOAs and property managers; price per linear foot and upsell priming/paint partnerships.


Concrete Edge Refinishing & Crack Prep

Provide diamond grinding of chipped stair noses, garage slab edges, and trip-lip transitions, plus crack chase prep for epoxy repair. The E-CLUTCH and kickback brake reduce risk during edge catches. Offer dust-controlled add-ons with a shroud and vac; price per foot or per patch.


Lawn & Garden Tool Sharpening Pop-Up

Set up at farmers’ markets or hardware stores to sharpen mower blades, axes, hoes, and machetes using grinding and flap discs. The 9,000 rpm brushless motor and POWER DETECT deliver fast throughput; run multiple batteries for continuous service. Charge per item with volume discounts.


Handmade Metal Art & Knife Shop

Create and sell metal wall art, minimalist furniture accents, and small-batch knives. The grinder handles profiling, texturing, and finishing in a compact shop or outdoor booth. Sell via Etsy and local markets; offer custom finishes and monograms for higher margins.

Creative

Scrap-to-Art Metal Wall Panels

Collect scrap steel (saw blades, gears, plate offcuts) and cut/shape with cut-off and grinding wheels to assemble abstract wall panels. Use flap discs to create brushed textures and light-catching patterns at up to 9,000 rpm. The cordless power and 2-position handle make it easy to work outdoors when sparks and dust are a concern.


Railroad Spike or Leaf-Spring Knives

Forge or cold-shape rough blanks, then use the grinder with coarse to fine flap discs to profile blades, bevel edges, and polish spines. POWER DETECT with the 8.0Ah battery gives strong, consistent grind pressure, while the kickback brake adds confidence when working tight bevels.


Concrete Terrazzo Coasters and Planters

Cast small concrete pieces with colorful stone chips, then reveal and smooth the aggregate using a diamond cup wheel and successive grit polishing pads. The cordless, brushless motor keeps pace for consistent finishes, and E-CLUTCH helps if the cup wheel snags on edges.


Industrial Pipe & Steel Furniture

Build side tables or shelves from black pipe and angle iron. Use the grinder to cut stock to length, chamfer edges, and flush-grind welds. Finish with flap discs for a satin sheen before clear-coating. The spindle lock speeds wheel swaps between cutting, grinding, and finishing.


Garden Wind Spinner Sculpture

Cut sheet metal vanes and round their edges, then polish patterns that shimmer as they spin. The adjustable side handle helps control curved grinds and consistent edge breaks, and the 5/8-11 spindle accepts a range of flap and polishing attachments for final detailing.