DeWALT

DEWALT DCF921B Impact

Impact
2.8 pounds
20 volts

4.8/ 5 on Amazon907Amazon ratings1,000+bought last month4.3ProductDome score

Better rated than 84%
More reviewed than 74%

Medium confidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology

Best forYou want a lighter 20V DEWALT impact tool and already have compatible batteries

A lighter 2.8 pound entry in DEWALT's 20V impact lineup, sold bare and best suited to buyers who already own compatible batteries.

As an Amazon Associate, ProductDome may earn a commission from qualifying purchases made through links on this page.

ProductDome scorecard

How it ranks among the 284 impacts we track

4.3/ 5ProductDome scoreMedium confidence

Owner satisfaction · 56% of scorecategory median 4.6★4.8

4.8★ across 907 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 360 ratings3.7

907 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score4.1

1,000+ bought on Amazon last month.

Data quality · 11% of score2.5

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 284 impacts we track - how the scorecard works · full impacts data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

Weighing in at 2.8 pounds, the DCF921B is DEWALT's lighter bare-tool entry in the 20 volt impact lineup, sold without a battery or charger included.

At 2.8 pounds this is noticeably lighter than DEWALT's DCF892B in the same 20V impact family, which weighs 4.2 pounds, making the DCF921B the better fit where reach and reduced arm fatigue matter more than raw bulk. It draws from the same 20V MAX battery platform, so it only makes sense to buy bare if you already own compatible batteries.

20 volt cordless platform
2.8 pound tool weight
Bare tool, battery sold separately
DEWALT DCF921B model

Who it's for

Users already on DEWALT's 20V MAX platform who want a lighter impact tool for overhead work or tight spaces. Skip it if you need a complete kit with battery and charger included.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out

2.8 pounds, lighter than similar 20V impacts
Fits existing 20V MAX battery investment

What to check first

Bare tool, no battery or charger included

Performance notes

The lighter 2.8 pound body reduces fatigue during overhead or repetitive work compared to heavier impact tools in the same line, though as with any bare tool, actual output depends on the battery pack used with it.

Specifications

Brand	DeWALT
Model	DCF921B
Item Weight	2.8 pounds
Voltage	20 volts

How it compares

This product against the closest alternatives we track in impacts.

Product	Amazon rating	Ratings	ProductDome score
DEWALT DCF921B ImpactThis product	4.8 / 5	907	4.3 / 5
Milwaukee 2457-20 ImpactMILWAUKEE	4.6 / 5	8,078	4.5 / 5
GEARWRENCH 81270 ImpactGEARWRENCH	4.7 / 5	4,983	4.4 / 5
AOBEN AB7331T ImpactAOBEN	4.4 / 5	10,707	4.4 / 5
Ryobi P235A ImpactRyobi	4.7 / 5	4,700	4.4 / 5

Frequently asked

Questions about the DeWALT DCF921B

Common buyer questions answered straight from the product spec data - no fluff, no "it depends".

How much does the DEWALT DCF921B weigh?

2.8 pounds, lighter than DEWALT's DCF892B at 4.2 pounds.

Does the DCF921B come with a battery?

No, it is sold as a bare tool.

What voltage platform is the DCF921B built on?

DEWALT's 20 volt system.