Ask Mylow

Mylow is an AI virtual assistant.

More Information

How do I install the guard?Does this include a battery?What is the warranty period?Can I change wheels easily?How much does it weigh?

DEWALT 4.5-in 20-volt max Trigger Switch Cordless Angle grinder

Name: DEWALT 4.5-in 20-volt max Trigger Switch Cordless Angle grinder
Brand: DEWALT
SKU: 3962539
Price: 159 USD
Availability: InStock
Rating: 4.6 (381 reviews)

Shop DEWALT

4.6

381

Pickup

Unavailable

Shipping

Fri, Jul 10

59 available

Delivery

Thu, Jul 16

59 available

Check Fee in Cart.

Outside Delivery.

Stepper number input field with increment and decrement buttons

Members save more.

This Item Is Featured In

POWERSTACK 1/2-in 20-volt Max 1.7-Amp Variable Speed Brushless Cordless Hammer Drill (1-Battery Included) plus 4.5-in 20-volt Max Trigger Switch Cordless Angle Grinder (Tool Only)

DEWALT POWERSTACK 1/2-in 20-volt Max 1.7-Amp Variable Speed Brushless Cordless Hammer Drill (1-Battery Included) plus 4.5-in 20-volt Max Trigger Switch Cordless Angle Grinder (Tool Only)

DEWALT 20V Max 1/2-in Keyless Brushless Cordless Drill & 4.5-in 20V Max Trigger Switch Cordless Angle grinder

DEWALT 20V MAX 2-Tool Power Tool Combo Kit w/ Case, 2-Batteries and Charger & 20V Angle grinder

DEWALT 20V Max 5-Tool Combo Kit with 2x 5Ah Batteries & Charger

DEWALT 20V 1/2-in Cordless Drill Kit & 20V Max 4.5-in Cordless Angle Grinder

DEWALT 3-Tool 20V Max Brushless Combo Kit & 20V Max 4.5-in Cordless Angle Grinder

DEWALT 4.5-in 20V Cordless Angle Grinder & 20V 2 Amp-Hour Battery

Best Price. Guaranteed

Find a lower price on an exact item? We'll match it. Some exclusions apply.

Price Guarantee

FREE Returns

Return it in store or ship it back for free. Eligibility rules apply.

Return Policy

Pay Your Way

Credit card, PayPal or Buy Now, Pay Later options available at checkout. Your choice.

Payment Options

The DCG412B 20V MAX* Lithium Ion 4-1/2-inch / 5-inch Cordless Angle Grinder increases productivity with features like Quick-Change wheel release, convenient trigger switch with lock-off button, and extended run-time battery of the DEWALT® cordless grinder.

8,000 RPM motor provides high power for cutting and grinding applications
Quick-Change™ wheel release allows tool free wheel removal without need for a wrench
Tool-free guard allows for quick and easy guard adjustments/positioning
2-finger trigger switch with lock-off button for convenient activation and easier gripping
2-position side handle offers greater control, comfort and versatility
Includes: (1) DCG412 Grinder, (1) 5-in x 1/4-in T27 Metal Grinding Wheel, (1) 2-Position Side Handle, (1) Type 27 Grinding Guard, (1) Hex Wrench

General
Battery Voltage	20-volt max	Battery Type	Lithium ion (Li-ion)
Color/Finish Family	Yellow	Package Contents	(1) DCG412 Grinder, (1) 5-in x 1/4-in T27 Metal Grinding Wheel, (1) 2-Position Side Handle, (1) Type 27 Grinding Guard, (1) Hex Wrench
Sub-Brand	N/A	Handle Type	2-position side handle
Type	Angle grinder	Housing Material	Plastic
Base Material	Plastic	Gearing Type	Metal
Package Quantity	1	Switch Type	Trigger

Dimensions
Arbor Diameter	1/4-in	Wheel Diameter (Inches)	4.5
Cord Length (Feet)	0	Width (Inches)	16.75
Length (Inches)	16	Amperage (Amps)	0
Weight (lbs.)	4.07

Features
Accessories Included	Yes	Maximum RPM (RPM)	8000
Adjustable Handle	Yes	Motor Bearings	Yes
Brushless	No	Number of Batteries Included for Tool	Not included
Charge Time (Hours)	0	Overload Protection	Yes
Charger Included	No	Replaceable Brushes	No
Cordless	Yes	Side Handle	Yes
Electronic Speed Control	No	Spindle Lock	Yes
Grinding Wheel Included	Yes	Variable Speed	No
Hybrid Capable	No

Compatibility
App Compatibility	No	Works with Android	No
Bluetooth Compatibility	No	Works with iOS	No
Wi-Fi Compatibility	No

Warranty
Warranty	3-year limited

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -	Safety Listing	UL safety listing

Miscellaneous
UNSPSC	27112700

Check out the Best Selling Angle Grinders on Lowes.com

Review

4.6 out of 5

381 Reviews

92% Recommend this product

Ratings may include incentivized customer reviews.

Read All Reviews

What Customers Are Saying

The cordless angle grinder is a versatile tool suitable for light-duty grinding and cutting tasks. Users praise its cordless convenience, lightweight design, and power output. However, some report issues with battery life and overheating during more demanding applications. The grinder performs well for common household projects but may struggle with intensive cutting tasks, leading to overheating and battery problems. Overall, it is a solid choice for light-duty work but may not be the best option for heavy-duty or prolonged use.

Customer review summary generated by AI, including incentivized reviews.

381 Customer Reviews

Sort By

Great for light weight work

Would Recommend

I got this for smaller, light weight grinding jobs. A 5aH batter is a must otherwise it won't cut. It has enough torque to cut, grind, and polish but I can still use it one handed when needed.

RETXFebruary 3, 2026

Was this Review Helpful ?

Dewalt has come a long way...

Would Recommend

Easy to use and dependable.

Richie VDecember 18, 2025
Verified Purchaser

Was this Review Helpful ?

Good starter

This is a good cheap grinder. The handling is good and has good grip. Would highly recommend.

Dewalt DCF921December 1, 2025

From dewalt.com

32 Questions

Read All Q&A

Sort By

DEWALT 4.5-in 20-volt max Trigger Switch Cordless Angle grinder

Shop DEWALT

Pickup

Shipping

Delivery

This Item Is Featured In

Overview

Product Features

Specifications

Community Q & A

DEWALT: Featured Videos

RELATED SEARCHES

DEWALT Angle Grinders

Angle Grinders

DEWALT Power Tool Combo Kits

Cordless Angle Grinders

Cordless Reciprocating Saws

Cordless Miter Saws

DEWALT Bench Grinders

Variable Speed Bench Grinders

Brushless Angle Grinders

20-volt max Battery Angle Grinders

DEWALT Benchtop Sanders

DEWALT Oscillating Tool Accessory Kits

Trigger Angle Grinders

Top Rated Angle Grinders

Brushless Oscillating Tool Kits