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Deal.ai › DeWalt
DeWalt
DeWalt DCF921B ATOMIC 20V MAX 1/2 in. Impact Wrench W/ DCB2104C POWERPACK 4Ah Kit

DeWalt DCF921B ATOMIC 20V MAX 1/2 in. Impact Wrench W/ DCB2104C POWERPACK 4Ah Kit

Best price now

$75.99at eBayChecked 47 min ago

68% under what the other stores charge

Compared across 16 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.

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Price facts

  • Last seen at $75.99 at eBay on Nov 12.
  • Checked at 16 stores.

Our take on the DeWalt DCF921B ATOMIC 20V MAX 1/2 in. Impact Wrench W/ DCB2104C POWERPACK 4Ah Kit

This is DeWalt's compact 1/2 in. cordless impact wrench, the DCF921B from the Atomic line, bundled with a 20V MAX XR POWERPACK 4Ah battery kit. It delivers up to 300 ft-lbs of fastening torque and 450 ft-lbs of breakaway torque, with four speed settings for control across light and heavy fastening. The Atomic body is short and light, so it fits where full-size high-torque guns won't, but it gives up peak torque to DeWalt's larger 1/2 in. models. It suits home mechanics, tire changes and assembly work; owners of the DCF921 praise its size and power for the class, while some want more breakaway torque for rusted fasteners.

Best forLug nut removal on cars and light trucksHome mechanics and DIY auto repairWorking in tight engine bays and wheel wellsBuyers who want one battery platform for many tools
Pros
  • Compact Atomic body reaches tight spaces
  • 300 ft-lbs fastening and 450 ft-lbs breakaway torque
  • Four speed settings for controlled fastening
  • 1/2 in. anvil takes standard impact sockets
  • Ships with a 4Ah XR POWERPACK battery
  • Runs on the common 20V MAX battery platform
Cons
  • Less torque than DeWalt's full-size high-torque wrenches
  • Not a substitute for a breaker bar on badly rusted bolts
  • Bare tool plus battery kit means no charger in the box
  • 4Ah pack is mid-capacity for heavy all-day use

DeWalt DCF921B ATOMIC 20V MAX 1/2 in. Impact Wrench W/ DCB2104C POWERPACK 4Ah Kit prices at every store

  • eBayNew

    In stock

    $75.99Free shippingChecked 47 min ago
    Visit eBay
  • Max ToolNew

    In stock

    $239.00Free shippingChecked 47 min ago
    Visit Max Tool
  • Home DepotNew

    In stock

    $239.00Free shippingChecked 47 min ago
    Visit Home Depot
  • Ace HardwareNew

    In stock

    $239.00Free shippingChecked 47 min ago
    Visit Ace Hardware
  • BigRNew

    In stock

    $239.99+ $6.95 shippingChecked 47 min ago
    Visit BigR
  • Authorized Tool OutletNew

    In stockReturn policy

    $425.15Checked 47 min ago
    Visit Authorized Tool Outlet
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $165.00Free shippingChecked 47 min ago
    Visit Amazon
  • WalmartNew

    Availability unknownSold by WB TOOLS

    $189.00Checked 47 min ago
    Visit Walmart
  • Acme ToolsNew

    Availability unknown

    $239.00Checked 47 min ago
    Visit Acme Tools
  • RunningsNew

    Availability unknown

    $239.00Checked 47 min ago
    Visit Runnings
  • Tool NutNew

    Availability unknown

    $239.00Checked 47 min ago
    Visit Tool Nut
  • Ohio Power ToolNew

    Availability unknown

    $239.00Checked 47 min ago
    Visit Ohio Power Tool
  • Do it BestNew

    Availability unknown

    $239.99Checked 47 min ago
    Visit Do it Best
  • Coastal Farm & RanchNew

    Availability unknown

    $239.99Checked 47 min ago
    Visit Coastal Farm & Ranch
  • Grainger Industrial SupplyNew

    Availability unknown

    $311.78Checked 47 min ago
    Visit Grainger Industrial Supply
  • ImperialSupplies.comNew

    Availability unknown

    $311.78Checked 47 min ago
    Visit ImperialSupplies.com

Store links may earn us a commission.

DeWalt DCF921B ATOMIC 20V MAX 1/2 in. Impact Wrench W/ DCB2104C POWERPACK 4Ah Kit price history

Lowest price we've seen: $75.99 on Nov 13 at eBay. Tracked across 15 stores since Nov 13.

What reviewers say

Owners of the DCF921B rate it highly as a compact 1/2 in. impact wrench, calling it strong for its size and easy to handle in tight spots. Common complaints are that it can struggle with heavily rusted or over-torqued fasteners and that runtime drops under continuous heavy use.

What people mention
  • PowerPraisedOwners say it removes most lug nuts and mid-size fasteners without strain.
  • SizePraisedThe short Atomic head is repeatedly called out for fitting where full-size wrenches won't.
  • Rusty boltsCriticisedReviewers report it can fall short on heavily rusted or over-torqued fasteners.
  • Battery lifeMixedThe 4Ah pack is fine for occasional jobs but drains quickly during long sessions.
  • Speed settingsMixedThe four modes are useful, though some find the selector awkward to change.

About the DeWalt DCF921B ATOMIC 20V MAX 1/2 in. Impact Wrench W/ DCB2104C POWERPACK 4Ah Kit

This bundle pairs the DeWalt ATOMIC 20V MAX 1/2 in. cordless impact wrench (DCF921B) with a 20V MAX XR POWERPACK 4Ah battery (DCB2104C). The wrench is designed to handle a range of fastening projects. The battery is included, so the tool is ready to run out of the box.

The wrench delivers up to 300 ft-lbs of fastening torque and 450 ft-lbs of breakaway torque. It has 4 speed settings for control in different applications. The battery is rated for 50% more power and longer life than traditional cylindrical batteries. Every item is a genuine DeWalt 20V MAX product supplied in its original packaging.

Brand
DeWalt
Tool model
DCF921B ATOMIC 20V MAX 1/2 in. Impact Wrench
Battery model
DCB2104C 20V MAX XR POWERPACK 4Ah Battery Kit
Drive size
1/2 in.
Fastening torque
Up to 300 ft-lbs
Breakaway torque
Up to 450 ft-lbs
Speed settings
4
Voltage
20V MAX
Battery capacity
4Ah
In the box
1 x DCF921B impact wrench, 1 x DCB2104C battery kit

Questions and answers

Is the DCF921B powerful enough for lug nuts?
Yes for most passenger cars and light trucks. With 450 ft-lbs of breakaway torque it handles typical lug nuts, but badly rusted or over-torqued bolts may still need a breaker bar.
What is the difference between fastening and breakaway torque?
Fastening torque (300 ft-lbs) is what it applies when tightening. Breakaway torque (450 ft-lbs) is the higher peak it can hit briefly to loosen a stuck fastener.
Does the kit include a charger?
No. The bundle is the DCF921B wrench and the DCB2104C 4Ah battery kit; a charger is not listed, so you need a DeWalt 20V MAX charger you already own.
Will this work with my existing DeWalt 20V batteries?
Yes. The DCF921B runs on any DeWalt 20V MAX battery, so older packs and larger XR packs work, though runtime varies with capacity.
What sockets does it take?
It has a 1/2 in. square anvil, so it uses standard 1/2 in. impact-rated sockets. Use impact sockets, not chrome hand sockets.
How does it compare with DeWalt's high-torque 1/2 in. wrench?
The DCF921B is smaller and lighter but gives up peak torque. DeWalt's full-size high-torque models loosen heavier, rusted fasteners more reliably at the cost of size and weight.
Where is the DeWalt DCF921B ATOMIC 20V MAX 1/2 in. Impact Wrench W/ DCB2104C POWERPACK 4Ah Kit cheapest?
At eBay, for $75.99, 68% under what the other stores charge, as of our latest check.
Where can I buy the DeWalt DCF921B ATOMIC 20V MAX 1/2 in. Impact Wrench W/ DCB2104C POWERPACK 4Ah Kit?
16 stores we checked sell it, including Authorized Tool Outlet, Amazon, eBay, Walmart, Max Tool.

Stores we've priced the DeWalt DCF921B ATOMIC 20V MAX 1/2 in. Impact Wrench W/ DCB2104C POWERPACK 4Ah Kit at

  • Ace Hardware deals and prices
  • Acme Tools deals and prices
  • Coastal Farm & Ranch deals and prices
  • Grainger Industrial Supply deals and prices
  • Ohio Power Tool deals and prices
  • Runnings deals and prices
  • The Home Depot deals and prices
  • Tool Nut deals and prices
  • Walmart deals and prices
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