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DEWALT 20V MAX* 1/4 in. Brushless Cordless Impact Driver (Tool Only) (DCF840B)

DEWALT 20V MAX* 1/4 in. Brushless Cordless Impact Driver (Tool Only) (DCF840B)

5· 1 rating

Best price now

$72.07at WalmartObserved at 10:53 PM

25% under what the other stores charge

Compared across 6 stores. Prices are checked against each store and labelled with when.

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Quick answers

Where is the DEWALT 20V MAX* 1/4 in. Brushless Cordless Impact Driver (Tool Only) (DCF840B) cheapest?
At Walmart, for $72.07, 25% under what the other stores charge, as of our latest check.
Is the DEWALT 20V MAX* 1/4 in. Brushless Cordless Impact Driver (Tool Only) (DCF840B) at its lowest price?
Yes: $72.07 is the lowest price we've seen for it since October 31.
What do buyers say about the DEWALT 20V MAX* 1/4 in. Brushless Cordless Impact Driver (Tool Only) (DCF840B)?
Rated 5 out of 5 from 1 ratings.
Where can I buy the DEWALT 20V MAX* 1/4 in. Brushless Cordless Impact Driver (Tool Only) (DCF840B)?
15 stores we checked sell it, including eBay, Toolmarts.com, Walmart, Woot, Amazon.

DEWALT 20V MAX* 1/4 in. Brushless Cordless Impact Driver (Tool Only) (DCF840B) prices at every store

  • WalmartNew

    In stockSold by M & A Sales

    $72.07Observed at 10:53 PM
    Visit store
  • WootNew

    In stock

    $95.99Observed at 8:24 PM
    Visit store
  • WootNew

    In stock

    $95.99Observed Nov 1, 2026, 7:02 AM
    Visit store
  • eBayNew

    Availability unknownSold by coinsandtreasures

    $82.39Observed at 10:53 PM
    Visit store
  • AmazonNew

    Availability unknown

    $86.99Observed Nov 1, 2026, 7:02 AM
    Visit store
  • Toolmarts.comNew

    Availability unknown

    $164.48Observed at 10:53 PM
    Visit store

Also available at

  • Ace Tool GroupCheck price at Ace Tool Group
  • Acme ToolsCheck price at Acme Tools
  • Dewalt Authorized SellerCheck price at Dewalt Authorized Seller
  • Elite TruckCheck price at Elite Truck
  • MSC Industrial SupplyCheck price at MSC Industrial Supply
  • Wurth NSICheck price at Wurth NSI
  • Tool NutCheck price at Tool Nut
  • ToolUp.comCheck price at ToolUp.com
  • ZoroCheck price at Zoro
  • MassdepotCheck price at Massdepot

DEWALT 20V MAX* 1/4 in. Brushless Cordless Impact Driver (Tool Only) (DCF840B) price history

$72.07$72.07
Oct 31Nov 2

Lowest price we've seen: $72.07 on Oct 31 at Walmart. Tracked across 16 stores since Oct 31.

About the DEWALT 20V MAX* 1/4 in. Brushless Cordless Impact Driver (Tool Only) (DCF840B)

DeWalt DCF840B 20V Impact Driver Impact Driver delivers up to 1,850"/lb of torque, 3,800BPM and 3,250RPM. Designed with 3 LED on-board lights and 3 speed trigger. Accepts 1" bit tips and is best used for framing, decking, cabinetry, electrical, dry-wall and plumbing/mechanical. Impact Driver is compact at under 4" and only weighs 2.1lbs.

Specifications

Torque
1850 in lbSource
Electric motor type
BrushlessSource
Volts
20 VoltsSource
Maximum speed
250 rpmSource
Features
Variable SpeedSource
Speeds
3Source
Is variable speed
YSource
Batteries incl
NSource
Brand
DEWALTSource
Rec. use
Drywall, PlumbingSource
Impact driver type
Impact DriverSource
Blows per minute
3800 BPMSource
Chuck size
0.25 inSource
Weight
2 lbSource
Color
YellowSource
Model
DCF840B-NBXSource
Piece count
1Source
Power type
BatterySource
Charger included
NSource
Power Source
Battery
Power Voltage
20V
Battery Voltage
20V
Battery Type
Lithium Ion
Battery Capacity
N/A - Battery Not Included

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