Whether you’re a pro contractor or a serious DIY enthusiast, the DEWALT 20V MAX 4-1/2 Inch Cordless Angle Grinder delivers the performance and freedom you need for tough cutting and grinding tasks. Built with portability, durability, and power in mind, this bare tool (DCG412B) is a standout addition to DEWALT’s 20V MAX line.
In this guide, we’ll break down everything you need to know about the DEWALT 20V MAX 4-1/2 Inch Cordless Angle Grinder—from key features to ideal use cases—plus how to get the most value from your investment.

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Why Choose the DEWALT 20V MAX 4-1/2 Inch Cordless Angle Grinder?
When it comes to portability and performance, few tools match the DEWALT 20V MAX 4-1/2 Inch Cordless Angle Grinder. Whether you’re cutting metal, grinding welds, or tackling rust removal, this compact beast handles it all without the cord tangles or outlet limitations.
Key Features at a Glance:
- Motor Power: 8,000 RPM high-power motor for fast material removal
- Tool-Free Guard: Easily adjust guard position for better versatility
- Quick-Change Wheel Release: Swap wheels without wrenches
- Comfort Grip: 2-finger trigger with lock-off switch for safety
- Battery Compatibility: Works with DEWALT 20V MAX system batteries
You’ll appreciate how this cordless angle grinder reduces job site clutter, enhances mobility, and still delivers the muscle needed for demanding projects.
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Built Tough for Real Worksites
Durability is a core selling point for DEWALT tools, and this model doesn’t disappoint. The DEWALT 20V MAX 4-1/2 Inch Cordless Angle Grinder features a sturdy cast metal gear case designed to withstand harsh environments, making it ideal for construction sites, auto shops, and outdoor projects.
You won’t have to worry about overheating either—this tool is engineered to manage heat even during extended use. Whether you’re grinding through thick rebar or cutting tile, this tool holds up.
Ease of Use: No Learning Curve Required
If you’ve ever been frustrated by tools with steep learning curves or excessive vibration, the DEWALT DCG412B will be a refreshing change. It features a comfortable overmolded grip, a streamlined two-finger trigger, and smart safety mechanisms.
You can change wheels quickly using the Quick-Change Wheel Release, which makes tool swaps faster and reduces downtime. Plus, the tool-free guard adjustment lets you adapt to any angle or task in seconds—perfect for tight spots or awkward angles.
👉 Get yours and simplify your setup.
Battery Life and Compatibility
Although this model is sold as a bare tool, it’s fully compatible with the DEWALT 20V MAX battery system. This means if you already own a DEWALT 20V MAX drill, impact driver, or saw, you’re ready to roll.
Battery life will depend on your usage, but with a 5.0Ah battery, most users can complete full tasks without mid-job recharges. That kind of efficiency means fewer interruptions and more productivity.
Looking to pair it with a high-capacity battery? Find the grinder here and explore bundled battery options for max value.
Ideal Projects for the DEWALT 20V MAX 4-1/2 Inch Cordless Angle Grinder
Not sure if this grinder fits your needs? Here are a few projects it’s perfectly suited for:
- Cutting rebar or metal tubing
- Removing rust or paint from metal surfaces
- Grinding weld seams
- Cutting masonry or tile (with appropriate wheel)
- Smoothing concrete edges
Its compact size and cordless design also make it perfect for tight workspaces, rooftops, or remote locations where access to power is limited.
What Users Are Saying
The DEWALT 20V MAX 4-1/2 Inch Cordless Angle Grinder has earned rave reviews for its reliability, ergonomics, and cordless convenience. Users frequently highlight its solid battery life, the ease of wheel changes, and the freedom of movement it offers over corded alternatives.
Here’s a quote from a verified Amazon buyer:
“This grinder saved my project! I was cutting through rusted bolts and grinding welds all day—no cord, no problem. Definitely one of the best tools I’ve added to my shop.”
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Is the DEWALT DCG412B Worth It?
If you’re invested in the DEWALT 20V MAX system and need a grinder that can handle professional tasks without sacrificing portability, the DCG412B is a no-brainer. While it doesn’t come with a battery or charger, it offers tremendous value for anyone already in the ecosystem—or looking to expand it.
Its durability, ease of use, and high-speed motor performance make it an ideal choice for anyone who needs to grind, cut, or polish with freedom and precision.
Final Thoughts
The DEWALT 20V MAX 4-1/2 Inch Cordless Angle Grinder stands out as a high-performance, convenient, and durable solution for a wide range of grinding and cutting tasks. Whether you’re upgrading your cordless collection or starting from scratch, this tool is a solid investment that won’t let you down.
Don’t wait until you’re mid-project and wishing you had a better tool.
👉 Get the DEWALT DCG412B today and feel the power in your hands.
FAQs
1. Does the DEWALT DCG412B come with a battery?
No, this is a bare tool—battery and charger are sold separately.
2. What battery works with the DEWALT 20V MAX grinder?
It works with any battery from the DEWALT 20V MAX lineup.
3. Can it cut concrete?
Yes, with the correct wheel, it can cut through concrete and masonry.
4. How heavy is it?
Approximately 6.2 lbs without battery, making it lightweight and easy to maneuver.
5. Is it good for beginners?
Absolutely. It’s user-friendly, with safety features and intuitive design