Prices verified Aug 4 · Always confirm at the retailer before buying.
Quick answer
For US shoppers comparing these angle grinders, DEWALT DCG413B was captured at $157.46 with 4.8 stars and 9,562 reviews on August 4, 2026, but its exact registry record was marked unavailable. BLACK+DECKER BDEG400 was captured at $45.99 with 4.5 stars and 7,354 reviews on the same date, and its record was marked in stock. BLACK+DECKER is $111.47 lower and is the actionable primary option in this snapshot; DEWALT stays in the comparison rather than being silently replaced. The titles describe a 20V MAX tool-only format versus a 6.5-amp 4-1/2-inch format. DEWALT's paddle-switch and kickback-brake wording is not an independent safety test. Verify battery or cord needs, wheel, guard, arbor, handle, material use, live price, and package contents. No independent cutting, vibration, heat, kickback, electrical-safety, or durability test was performed.
BLACK+DECKER is the actionable captured listing and costs $111.47 less; DEWALT is unavailable in the cited registry. Verify power source, wheel, guard, and package contents.
Mubboo Verdict
Winner
BLACK+DECKER BDEG400 4-1/2-Inch Angle Grinder
DEWALT DCG413B 20V MAX Angle Grinder vs BLACK+DECKER BDEG400 4-1/2-Inch Angle Grinder, side by side
DEWALT DCG413B 20V MAX Angle Grinder
Pros:
- 20V MAX, paddle-switch, and kickback-brake wording is named
- 4.8-star captured rating
- Retained so an unavailable primary is not silently substituted
Cons (honest weight):
- Unavailable in the captured registry
- $111.47 higher captured price than BLACK+DECKER
- No independent vibration, heat, kickback, or cutting test
BLACK+DECKER BDEG400 4-1/2-Inch Angle Grinder
Pros:
- $111.47 lower captured price
- 4-1/2-inch and 6.5-amp wording is named
- Marked in stock in the captured registry
Cons (honest weight):
- Lower captured rating than DEWALT
- Corded versus 20V MAX format is a major workflow difference
- No independent vibration, heat, kickback, or cutting test
Where each one wins
6 dimensions scored head-to-head. DEWALT DCG413B takes 2; BLACK+DECKER BDEG400 takes 2.
| Dimension | DEWALT DCG413B 20V MAX Angle Grinder | BLACK+DECKER BDEG400 4-1/2-Inch Angle Grinder | Winner |
|---|---|---|---|
| Captured priceBLACK+DECKER is $111.47 lower in the captured snapshot. | $157.46 | $45.99 | BLACK+DECKER BDEG400 |
| Captured availabilityBLACK+DECKER is marked in stock; DEWALT is marked unavailable. | Unavailable | In stock | BLACK+DECKER BDEG400 |
| Power and format wording20V MAX tool-only versus 6.5-amp 4-1/2-inch wording; verify the setup you need. | 20V MAX / tool only | 6.5 amp / 4-1/2 inch | Tie |
| Named switch or brake wordingDEWALT's title names a paddle switch and kickback brake; this is not a safety test. | Paddle switch / kickback brake | Verify live listing | DEWALT DCG413B |
| RatingDEWALT is higher in the captured records. | 4.8 | 4.5 | DEWALT DCG413B |
| Independent tool testNo controlled test was performed. | Not tested | Not tested | Tie |
| Overall | 2 wins | 2 wins | Tie |
Availability changes the practical choice
DEWALT is captured at $157.46 with 4.8 stars from 9,562 reviews; its record was captured on August 4, 2026 and marked unavailable. BLACK+DECKER is captured at $45.99 with 4.5 stars from 7,354 reviews; its record was captured on August 4, 2026 and marked in stock. BLACK+DECKER is $111.47 lower, but the products use different power formats.
DEWALT stays in the comparison so an unavailable primary is not silently replaced. If its exact ASIN becomes available, recheck whether the listing is tool-only, whether the required battery and charger are separate, and whether the current seller is the same product.
20V MAX and 6.5 amps describe different setups
DEWALT's title names a 20V MAX tool-only format. BLACK+DECKER's title names a 6.5-amp 4-1/2-inch grinder. This is not a direct performance ranking: battery platform, cord access, wheel, guard, handle, material, pressure, and operator technique affect the job.
Check the exact wheel diameter, arbor, guard, side handle, switch, battery or cord requirements, included accessories, and manufacturer instructions. Do not assume a power number predicts cutting speed, heat, vibration, or lifespan.
Safety wording is not a safety certification
The DEWALT title uses kickback-brake wording. That is a captured listing descriptor, not an independent evaluation of stopping behavior, kickback risk, vibration, guard setup, or operator safety. Use the correct guard and wheel, wear the required eye, hearing, hand, and respiratory protection, and follow the tool manual and material-specific guidance.
Alternatives by workflow
Makita is a current in-stock paddle-switch alternative. Metabo HPT and AVID POWER are current corded formats with different kit and motor wording. They are separate ASINs, not silent replacements for DEWALT or BLACK+DECKER; verify wheels, guard, handle, power source, and package contents.
What this comparison does not test
No independent cutting, grinding, vibration, heat, kickback, noise, wheel, electrical-safety, or durability test was performed. The recommendation is limited to captured registry facts and captured listing-title wording.
Which should you buy?
| Your situation | Pick | Why |
|---|---|---|
| Need an actionable listing | BLACK+DECKER BDEG400 4-1/2-Inch Angle Grinder | Marked in stock in the captured registry. |
| Existing DEWALT battery platform | DEWALT DCG413B 20V MAX Angle Grinder | 20V MAX wording, but unavailable in the cited capture. |
| Lower captured price | BLACK+DECKER BDEG400 4-1/2-Inch Angle Grinder | Lower by $111.47 in the captured record. |
| Cutting or safety evidence | BLACK+DECKER BDEG400 4-1/2-Inch Angle Grinder | No independent test. |
Marked in stock in the captured registry.
20V MAX wording, but unavailable in the cited capture.
Lower by $111.47 in the captured record.
No independent test.
What if neither is right?
Makita 9557PBX1 4-1/2-Inch Angle Grinder
$109
A current in-stock alternative; verify switch, wheel, guard, power, and package contents before use.
Metabo HPT G12SR4 4-1/2-Inch Angle Grinder
$49
The title names five grinding wheels and a hard case; verify included accessories and intended material use.
AVID POWER 7.5-Amp 4-1/2-Inch Angle Grinder
$42.99
The title names a 7.5-amp motor and multiple wheel types; verify guard, handle, discs, and current package.
Frequently Asked Questions
Which is better, DEWALT DCG413B or BLACK+DECKER BDEG400?
BLACK+DECKER is the actionable lower-price option in the captured registry. DEWALT names a different 20V MAX tool-only format and has the higher captured rating, but its exact record is marked unavailable. Verify the power source and tool setup.
Which angle grinder is cheaper?
BLACK+DECKER is captured at $45.99 versus $157.46 for DEWALT, a $111.47 difference. Verify live prices and availability.
Does the DEWALT include a battery and charger?
The captured title says tool only. Verify the live package contents and battery/charger requirements before ordering.
Does kickback-brake wording prove the DEWALT is safer?
No. It is listing wording, not an independent safety evaluation. Use the correct guard and wheel, follow the manual, and use the required protective equipment.
Did Mubboo test grinding or cutting performance?
No. This comparison uses registry and listing evidence and does not include controlled cutting, vibration, heat, kickback, electrical-safety, or durability testing.
How we compared: Price, rating, review count, image, title wording, and captured availability use exact US registry records for DEWALT, BLACK+DECKER, and the linked alternatives. Both primary records were captured on August 4, 2026. Tool specifications and safety wording are not independent cutting, vibration, heat, kickback, or electrical-safety testing.
Who wrote this and where's the data from?
Author: Mubboo Editorial Team. Independent US-market consumer research using captured registry records and exact listing information. Last verified: 2026-08-04. No controlled cutting, vibration, heat, kickback, electrical-safety, or durability testing is claimed.