A cordless angle grinder is one of the most useful tools for fabrication, construction, maintenance, and metalworking. But choosing the right DeWalt model depends on more than wheel size alone.
This guide compares DeWalt 20V MAX cordless grinders with the higher-demand 60V FLEXVOLT platform to help you choose the setup that better matches your work.
20V MAX or FLEXVOLT: What's the Difference?
For Everyday Cordless Grinding
DeWalt 20V MAX grinders are practical for general fabrication, maintenance, cutting, weld cleanup, and mobile jobsite work.
They also make sense for users who already own compatible DeWalt 20V MAX batteries.
For More Demanding Applications
FLEXVOLT grinders are designed for higher-demand cordless work where sustained grinding and cutting performance are important.
They are well suited to fabrication, construction, industrial maintenance, and heavier workloads.
Quick Guide: Which Platform Fits You?
DeWalt 20V MAX Grinder Options
DeWalt DCG405N
A compact professional grinder with electronic brake, electronic clutch, overload protection, soft start, and kickback brake.
View DCG405N →DeWalt DCG406N
A professional cordless grinder for users who prefer a paddle-switch control for grinding, cutting, and surface preparation.
View DCG406N →DeWalt DCG407N
Designed for grinding, cutting, deburring, and surface preparation in fabrication, maintenance, and construction work.
View DCG407N →DeWalt DCG412N
A 5-inch cordless grinder for users who want a larger disc while remaining within the DeWalt 20V MAX battery platform.
View DCG412N →DeWalt 60V FLEXVOLT Grinder
Quick Grinder Comparison
| Model | Platform | Disc Size | Best Fit |
|---|---|---|---|
| DCG405N | 20V MAX | 4" | Compact professional grinding |
| DCG406N | 20V MAX | 4" | Paddle-switch users |
| DCG407N | 20V MAX | 4" | General fabrication and maintenance |
| DCG412N | 20V MAX | 5" | Larger disc within the 20V platform |
| DCG418N | 60V FLEXVOLT | 5" | Demanding professional grinding and cutting |
What Should You Consider Before Buying?
Battery Platform
If you already own compatible DeWalt 20V MAX batteries, choosing another 20V MAX tool may be the simplest option.
Disc Size
A 4-inch grinder is compact and easy to handle. A 5-inch grinder offers a larger working area for cutting and grinding.
Workload
General maintenance may suit a 20V MAX grinder, while heavier fabrication and frequent cutting may justify FLEXVOLT.
Switch Type
DeWalt offers slide-switch and paddle-switch grinder options. Choose the control style that suits your work and preference.
Which DeWalt Cordless Grinder Should You Choose?
For general construction, installation, maintenance, and everyday fabrication, the DCG405N, DCG406N, and DCG407N are practical 20V MAX 4-inch options.
If you want a larger 5-inch disc while staying within the 20V MAX platform, consider the DCG412N.
For more demanding professional grinding and cutting, the DCG418N FLEXVOLT offers a 5-inch disc, brushless motor, 9,000 rpm no-load speed, Kickback Brake, E-CLUTCH, and PERFORM & PROTECT features.
Frequently Asked Questions
Is FLEXVOLT always better than 20V MAX?
Not necessarily. FLEXVOLT is suited to more demanding workloads, while a 20V MAX grinder may be lighter and more practical for everyday grinding and cutting.
Can DeWalt cordless grinders cut steel?
Yes, when used with the correct compatible cutting disc and within the tool and accessory specifications.
Should I choose a 4-inch or 5-inch grinder?
Choose a 4-inch model when compact handling is important. A 5-inch grinder may be preferred when you need a larger disc and working area.
Does the DCG418N include a battery?
No. KHM lists the DCG418N as a bare tool. A compatible DeWalt FLEXVOLT battery and charger are required separately.
Explore DeWalt Cordless Grinders
Compare DeWalt 20V MAX and FLEXVOLT cordless grinders for fabrication, construction, metalworking, maintenance, and professional jobsite work.
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