DEWALT DCG413B Grinder
- Grinder
- 20 watts
- Battery
- 1 pound
- Better rated than 85%
- More reviewed than 99%
A cordless 20 volt angle grinder with a strong 4.8 rating across nearly 9,600 reviews, best matched to buyers already invested in the DEWALT battery platform.
As an Amazon Associate, ProductDome may earn a commission from qualifying purchases made through links on this page.
How it ranks among the 150 grinders we track
4.8★ across 9,600 Amazon ratings, Bayesian-smoothed toward the category average.
9,600 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
2,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 150 grinders we track - how the scorecard works · full grinders data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
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. A 4.8 rating across roughly 9,600 reviews and about 2,000 units bought in the past month point to a well-established, frequently repurchased tool in the DEWALT lineup.
- 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.
Strengths and trade-offs
Drawn from this product's published specifications.
- Cordless 20 volt operation
- 4.8 average rating across roughly 9,600 reviews
- 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.
Specifications
| Brand | DeWalt |
|---|---|
| Model | DCG413B |
| Dimensions & fit | |
| Item Weight | 1 pound |
| Dimensions | 12.2 × 4.7 × 6 inches |
| Capacity & performance | |
| Speed | 3450 rpm |
| Power & efficiency | |
| Motor Power | 20 watts |
| Power Source | Battery |
| Voltage | 20 volts |
Other DeWalt grinders
How it compares
This product against the closest alternatives we track in grinders.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| DEWALT DCG413B GrinderThis product | 4.8 / 5 | 9,600 | 4.7 / 5 |
| Milwaukee 2880-20 GrinderMILWAUKEE | 4.8 / 5 | 2,400 | 4.5 / 5 |
| AVID MW590 GrinderAVID | 4.5 / 5 | 6,100 | 4.4 / 5 |
| Makita 9557PBX1 GrinderMAKITA | 4.8 / 5 | 3,960 | 4.4 / 5 |
| CRAFTSMAN CMCG400B GrinderCraftsman | 4.7 / 5 | 2,900 | 4.4 / 5 |
Similar grinders from other brands
Questions about the DeWalt DCG413B
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
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.