
DEWALT DCG413B 20V MAX Brushless Angle Grinder 4-1/2 Inch
- Power Source: Battery
- Voltage: 20 volts
- Item Weight: 1 pound
- Motor Power: 20 watts
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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ASIN: B07457BXJWModel: DCG413BCategory: Power Grinders
Overview
The DEWALT DCG413B is a 20 volt cordless angle grinder with a no-load speed of 3450 RPM, measuring 12.2 by 4.7 by 6 inches. Listed item weight is about 1 pound, which points to the bare tool rather than a complete kit with battery.
Running on DEWALT's 20 volt battery platform lets this grinder skip a cord, useful for job sites without easy power access, though that also means runtime depends on whatever battery pack you pair it with.
- 20 volt cordless power source
- 3450 RPM no-load speed
- 12.2 x 4.7 x 6 inch body
- 4.8 average rating
Who it's for
Tradespeople and DIYers who already have DEWALT 20 volt batteries and want a cordless angle grinder for cutting, grinding, or surface prep away from an outlet. Less useful to anyone without existing DEWALT batteries, since this listing is for the tool alone.
Pros and cons
- Cordless 20 volt operation
- Compact at 12.2 x 4.7 x 6 inches
- Listed as bare tool, battery and charger sold separately
- 3450 RPM is on the modest side for heavy grinding work
Performance notes
A 3450 RPM no-load speed is in line with compact angle grinders built for cutting and light grinding rather than heavy material removal. Running cordless on the 20 volt platform trades some sustained power for freedom from a cord, with actual runtime and cutting power depending on the battery pack used.
Where it stands among angle grinders
- #5 most-searched brand and model of the 27 angle grinders lines we track (by search demand, not sales).
From the specs of the 10 angle grinders we list; not a test result.
Specifications
| Brand | DeWalt |
|---|---|
| Model | DCG413B |
| Dimensions & fit | |
| Item Weight | 1 pound |
| Dimensions | 12.2 × 4.7 × 6 inches |
| Dimensions | 12.2"L x 4.7"W x 6"H |
| Capacity & performance | |
| Speed | 3450 RPM |
| Power & efficiency | |
| Power Source | Battery |
| Voltage | 20 volts |
| Motor Power | 20 watts |
Closest rivals on specs
Milwaukee 2880-20 M18 FUEL Small Angle Grinder- Voltage 20 vs 18 volts (+11%)
- Motor Power 20 vs 800 watts (-97%)
- Item Weight 1 vs 4.99 pounds (-80%)
ZFULVO Cordless Mini Angle Grinder Kit- Voltage 20 vs 16.8 volts (+19%)
- Item Weight 1 vs 2.43 pounds (-59%)
AVID POWER MW590 Angle Grinder 4-1/2 Inch- Voltage 20 vs 120 volts (-83%)
- Motor Power 20 vs 900 watts (-98%)
- Item Weight 1 vs 5.1 pounds (-80%)
Frequently asked questions
Does the DCG413B include a battery?
The B in DEWALT model numbers typically marks a bare tool, and the roughly 1 pound listed weight fits a tool-only unit, so plan to buy a battery and charger separately unless the listing states otherwise.
What is the no-load speed?
3450 RPM, per the listing specs.
What battery platform does it use?
DEWALT's 20 volt system, per the listed voltage.