DEWALT DCF850B-NBX Impact
- Impact
- 16 amps
- Battery
- 2.16 pounds
- More reviewed than 75%
A well-specified, high rpm 20V impact driver from a mainstream brand, worth it for buyers already on DeWalt's battery platform who understand it likely ships as a bare tool.
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How it ranks among the 284 impacts we track
4.6★ across 1,000 Amazon ratings, Bayesian-smoothed toward the category average.
1,000 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
700+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 284 impacts we track - how the scorecard works · full impacts data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A 20V MAX cordless impact driver from DeWalt, model DCF850B-NBX, rated at 3280 rpm and weighing 2.16 pounds, sized at roughly 6.5 by 3 by 9 inches. It is one of the more frequently purchased tools in this batch based on recent buying activity.
DeWalt's B suffix on this model typically marks a bare tool, meaning battery and charger are usually sold separately, so check the listing carefully for what ships in the box. The compact footprint and high rpm rating make it suited to overhead and tight-space fastening work common on job sites.
- 20V MAX cordless power
- 3280 rpm speed rating
- 2.16 pound weight
- 6.5 x 3 x 9 inch size
Who it's for
This suits tradespeople and DIYers already using DeWalt's 20V MAX battery platform who want a fast, compact impact driver. It is less suited to buyers who need a complete kit with battery and charger included straight out of the box.
Strengths and trade-offs
Drawn from this product's published specifications.
- High 3280 rpm speed rating
- Compact 2.16 pound weight
- Fits DeWalt's widely used 20V MAX battery platform
- Likely sold as a bare tool, no battery
- Torque figures are not listed
Performance notes
The 3280 rpm rating and 20V power point to quick fastening speed, and the 2.16 pound weight keeps the tool maneuverable in tight spots. The listed amperage figure describes battery draw rather than sustained torque output, and torque itself is not specified.
Specifications
| Brand | DeWALT |
|---|---|
| Model | DCF850B-NBX |
| Amperage | 16 amps |
| Power Source | Battery |
| Item Weight | 2.16 pounds |
| Voltage | 20 volts |
| Dimensions | 6.5 × 3 × 9 inches |
Other DeWALT impacts
How it compares
This product against the closest alternatives we track in impacts.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| DEWALT DCF850B-NBX ImpactThis product | 4.6 / 5 | 1,000 | 4.3 / 5 |
| Milwaukee 2457-20 ImpactMILWAUKEE | 4.6 / 5 | 8,078 | 4.5 / 5 |
| GEARWRENCH 81270 ImpactGEARWRENCH | 4.7 / 5 | 4,983 | 4.4 / 5 |
| AOBEN AB7331T ImpactAOBEN | 4.4 / 5 | 10,707 | 4.4 / 5 |
| Ryobi P235A ImpactRyobi | 4.7 / 5 | 4,700 | 4.4 / 5 |
Similar impacts from other brands
Questions about the DeWALT DCF850B-NBX
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the DeWalt DCF850B come with a battery?
The B suffix in DeWalt's naming typically marks a bare tool, so check the listing to confirm whether a battery and charger are included.
What is the speed rating of the DCF850B?
It is rated at 3280 rpm.
How much does the DCF850B weigh?
2.16 pounds.