DEWALT

DEWALT 20V MAX XR DCF840 Impact Driver Review

*DEWALT DCF840C2 DEWALT 20V BRUSHLESS Impact Driver KIT

$275.00 (price as of 2026-11-07)

Check Price on Amazon

Drills Supply is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.

Reddit score

3.3 Based on 3 Reddit owner comments · Top 88% of 16 tracked impact drivers

Owner sentiment
4.8
Recommendations
2.4
Spec score
Not rated
Value
1.0

How these are computed: methodology. Components without evidence show “Not rated” and their weight moves to the others.

Limited Reddit owner feedback. We need more owner experiences before this score is reliable, so this page is not yet in our sitemap.

Is the DEWALT 20V MAX XR DCF840 Impact Driver worth it?

Based on 3 Reddit owner comments, the DEWALT 20V MAX XR DCF840 Impact Driver scores 3.3 out of 5 (owner comments average 5.0 stars), and the theme owners raise most is speed modes (1 mention).

Who it suits

  • You care about speed modes (1 positive owner mention)

Who should skip it

  • Not observed: no recurring complaint theme yet.

What Reddit owners say

3 positive and 0 critical owner comments. Quotes link to the original Reddit comment.

“I actually love my 1.7’s, but they primarily only stay on the dcf840 or 850.”
owner comment via r/Dewalt · 2025-12-20
speed modes
“If my 12V drill and driver ever quit, I'll get the DCF840 and DCD793 kit.”
owner comment via r/Dewalt · 2026-01-02
“There was an opportunity to get the DCF840 when I was buying my first set of 20v tools and I have noticed the improvement - now the DCF801 sits on the shelf for the most part.”
owner comment via r/Dewalt · 2026-07-15

Key specs

As listed on the Amazon product page we checked; missing fields are never estimated.

Item Package Dimensions L x W x H11.85 x 9.52 x 3.3 inches
Package Weight2.34 kg
Item Dimensions LxWxH12.44 x 3.38 x 9.19 inches
Item Weight2.34 kg
Brand NameDEWALT
Model NameDCF840C2
ColorMulti
MaterialNylon
Suggested Usersunisex-adult
Part NumberDCF840C2
Included Components*DEWALT DCF840C2 DEWALT 20V BRUSHLESS IMPACT DRIVER KIT
SizeOne Size

Check Price on Amazon

Drills Supply is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Commissions never affect scores, rankings, or verdicts.

FAQ

Is the DEWALT 20V MAX XR DCF840 Impact Driver worth it?

Based on 3 Reddit owner comments, the DEWALT 20V MAX XR DCF840 Impact Driver scores 3.3 out of 5 (owner comments average 5.0 stars), and the theme owners raise most is speed modes (1 mention).

What do Reddit owners complain about with the DEWALT 20V MAX XR DCF840 Impact Driver?

We have not observed a recurring complaint theme in owner comments yet.

How much does the DEWALT 20V MAX XR DCF840 Impact Driver cost?

It was $275.00 on Amazon when we checked on 2026-11-07. Prices change, so check Amazon for the current price.

Alternatives

DEWALT

DEWALT 20V MAX XR DCF860 3-Speed Impact Driver

3.7 (16 owner comments)

$199.00 (price as of 2026-11-07)

powercompact

“The DCF860 is fantastic, but it's so powerful it's almost absurd.”

Read review →
DEWALT

DEWALT 20V MAX XR DCF845 Impact Driver

3.5 (5 owner comments)

$170.00 (price as of 2026-11-07)

battery lifevalue

“DCF845 > DCF787 Generally 8xx drills/impacts > 7xx.”

Read review →
DEWALT

DEWALT 20V MAX Atomic DCF850 Impact Driver

3.9 (14 owner comments)

$169.00 (price as of 2026-11-07)

powercompact

“The DCF850 is newer, slimmer/lighter and will do just as well or better than my 887's - and would be what I would get for daily home/farm work, fence ”

Read review →

Keep deciding

More DEWALTAll impact driversBuying guideMethodology

Last updated 2026-11-07. Amazon listing ASIN B09MLKRLKQ.