DEWALT DCF850B-NBX 20V Compact 1/4 in Impact Driver
- 20 volts MAX, battery powered
- 1825 inch pounds of maximum torque
- 3250 RPM top speed across 3 speeds
- 336 watts maximum power
- 2.16 pounds weight
- Belt clip included
- Impact driver listed as the only tool
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A lightweight three speed impact driver with a belt clip, supplied as the tool alone. Several fields, such as chuck size and amperage, look wrong.
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ASIN: B0CCPS79PKModel: DCF850BCategory: Impact Drivers & Wrenches
Overview
Driving screws and bolts is the job of this compact DEWALT impact driver, which ships with only a clip for the belt. The body is metal and plastic.
Low weight and high torque make it easy to handle for overhead and repetitive fastening. The limitation is data quality, because the chuck size, amperage and speed unit fields need correcting.
Who it's for
Overhead fastening and repetitive screw driving suit a light driver with speed settings. A first-time buyer should look at a kit instead.
Pros and cons
- High torque rating
- Three speed settings
- Belt clip included
- Battery and charger not included
- Chuck size field looks wrong
- Amperage field looks wrong
- Speed unit typo
Performance notes
Fastening force comes from the motor and impact mechanism, with three speed settings to match fasteners. Battery size sets run time. The listing gives one speed as RPM and another as rph, so the true top speed is unclear.
Specifications
| Brand | DeWALT |
|---|---|
| Model | DCF850B |
| Dimensions & fit | |
| Item Dimensions L X W X H | 6.5"L x 3"W x 9"H |
| Item weight | 2.16 Pounds |
| Maximum Chuck Size | 1 Inches |
| Capacity & performance | |
| Speed | 3250 RPM |
| Battery Capacity | 5 Amp Hours |
| Number Of Speeds | 3 |
| Power & efficiency | |
| Power Source | Battery Powered |
| Voltage | 20 Voltshigher than 54% of 135 impact drivers & wrenches |
| Maximum Power | 336 Watts |
| Amperage | 16 Amps |
| Construction & materials | |
| Material Type | Metal, Plastic |
| Color | Black, Gray |
| Included components | |
| Included Components | Belt Clip, Impact Driver |
| Other details | |
| Maximum Torque | 1825 Inch Pounds |
| Drill Type | Impact Driver |
| Additional Features | Lightweight |
| Is Electric | Yes |
Closest rivals on specs
Frequently asked questions
Which batteries fit the DEWALT DCF850B?
The listing names 20 volts but no battery line. Check with the maker for compatible packs.
Does the DEWALT DCF850B include a battery?
No. The included components are the belt clip and the impact driver.
Is the DEWALT DCF850B chuck really one inch?
The chuck size field says one inch, which is likely a listing error for an impact driver.
Is the DEWALT DCF850B an impact driver?
Yes. The drill type and item type are both impact driver.