DEWALT Atomic DCF809B 20V Max Impact Driver
- Torque: 1825 in-lb
- Maximum Torque: 1700 in-lb
- Power Source: Battery
- Maximum Rotational Speed: 9200 rpw
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact bare-tool impact driver for people already on the 20V MAX platform who value size and weight over a stated torque number.
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ASIN: B07QJ96V1SModel: DCF809BCategory: Impact Drivers & Wrenches
Overview
DeWALT's DCF809B is a 20V MAX cordless impact driver with a short 8 by 6 by 2.5 inch head, weighing 2.16 pounds, built for driving screws and fasteners where a full-length driver will not fit. The B suffix on the model number indicates it ships as a bare tool, without battery or charger.
Rated at 9,200 rpm no-load speed, it runs on the same 20V MAX battery line as DeWALT's wider tool range, so the appeal is largely about adding a compact driver to a battery pool you already own. No torque figure is listed in the spec sheet, so buyers comparing heavy-duty driving jobs should look for that number elsewhere before assuming this matches larger DeWALT impact drivers.
- 20V MAX cordless platform
- 9,200 rpm no-load speed
- 8 x 6 x 2.5 inch compact body
- 2.16 pound tool weight
Who it's for
Fits tradespeople and DIYers already invested in 20V MAX DeWALT batteries who want a lighter, shorter driver for cabinetry, trim, or overhead work. Less suited to someone starting from scratch who needs a battery and charger in the box, or who wants a published torque spec to compare against other brands.
Pros and cons
- Compact 8-inch body for tight spaces
- Light at 2.16 pounds for repeated overhead use
- Runs on the shared 20V MAX battery platform
- Sold as a bare tool, no battery or charger
- No torque spec listed for comparison
Performance notes
The 9,200 rpm no-load speed points to a fast driving action, but with no torque figure supplied, actual stopping power on long lag bolts or dense lumber is not something the spec sheet confirms. At 2.16 pounds and 8 inches long, it is built for reach into cabinets and stud bays rather than for maximum leverage.
Specifications
| Brand | DeWALT |
|---|---|
| Model | DCF809B |
| Dimensions & fit | |
| Maximum Chuck Size | 6.35 Millimeters |
| Item Weight | 2.16 poundslower than 70% of 184 impact drivers & wrenches |
| Item Dimensions L X W X H | 8 × 6 × 2.5 inches |
| Capacity & performance | |
| Maximum Rotational Speed | 9200 rpw |
| Drilling Capacity Wood | 0.2 inches |
| Drilling Capacity Metal | 0.2 inches |
| Battery Capacity | 1300 mAh |
| Number Of Speeds | 3 |
| Power & efficiency | |
| Power Source | Battery |
| Voltage | 20 voltshigher than 54% of 171 impact drivers & wrenches |
| Amperage | 16 amps |
| Maximum Power | 300 watts |
| Battery Type | Lithium-Ion |
| Construction & materials | |
| Material Type | Blend |
| Color | Multi |
| Compatibility & installation | |
| Compatible Devices | DEWALT 20V MAX Batteries |
| Included components | |
| Included Components | (1) DCF809 20V MAX* Brushless Compact 1/4 In. Impact Driver; (1) Belt Clip |
| Warranty & support | |
| Manufacturer Warranty Description | No |
| Other details | |
| Torque | 1825 in-lbhigher than 64% of 75 impact drivers & wrenches |
| Maximum Torque | 1700 in-lbhigher than 51% of 68 impact drivers & wrenches |
| Drill Type | Impact Driver |
| Is Electric | Yes |
| Item Type Name | Impact Driver |
| Additional Features | Variable Speed |
Closest rivals on specs
Frequently asked questions
Does the DEWALT DCF809B come with a battery?
No. The B in the model number marks it as a bare tool, so battery and charger are sold separately.
What is the no-load speed of the DCF809B?
DeWALT lists it at 9,200 rpm.
How much does the DCF809B weigh?
2.16 pounds, with an 8 by 6 by 2.5 inch body.