DEWALT DCF809BvsDCF850B
Two impact drivers, compared from their makers' published US specs. Specs checked 2026-10-18.
Comparing the DEWALT DCF809B (BARE TOOL) and DEWALT DCF850B (BARE TOOL) on the DEWALT 20V MAX platform: across 10 specs published for both models, 2 differ and 8 match, while 1 spec is published by only one maker and not assumed for the other. Key distinction: DEWALT DCF850B: more torque (1,825 in-lbs vs 1,700 in-lbs). All figures are from published US manufacturer specs and operator manuals, not hands-on testing.
DEWALT DCF809B
Max torque 1,700 in-lbsMax speed 2,800 rpmTool length 5.1 in
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Find DCF809B prices on Amazon Find DCF809B prices at eBay Opens the retailer in a new tab; the current price is shown there. Marketplace sellers vary: check the seller and exact model.DEWALT DCF850B
Max torque 1,825 in-lbsMax speed 3,250 rpmTool length under 4 in (DEWALT's wording)
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Find DCF850B prices on Amazon Find DCF850B prices at eBay Opens the retailer in a new tab; the current price is shown there. Marketplace sellers vary: check the seller and exact model.How to choose between them
- Both run on DEWALT 20V MAX batteries, so your existing packs and chargers fit either tool.
- Evidence boundary: 1 spec row is published by only one maker in the table below; unstated figures are treated as unknown rather than assumed.
From the published figures only; no testing. Rated figures from different makers are not measured the same way.
Where they differ
- DEWALT DCF850B: more torque (1,825 in-lbs vs 1,700 in-lbs).
- DEWALT DCF850B: higher top speed (3,250 rpm vs 2,800 rpm).
2 verified spec differences across 10 specs published for both models (1 spec is listed by only one maker). Stated from the published figures only; no testing.
What they share
- Same battery system (DEWALT 20V MAX): both tools run on the same packs and chargers.
- Same tool category: both are impact drivers.
- Both are bare tools: no battery or charger in either box.
- Matching published specs: Motor: Brushless; Batteries in box: 0; Battery capacity: None included; Charger in box: No; Chuck type: Hex; Chuck size: 1/4 in.
Published by only one maker (data gaps)
- Speed settings: DCF850B lists 3; we hold no matching figure for the DCF809B.
A missing value means we have no published figure under that heading for the other model (its maker may not publish it, or may state it differently); we never guess or count an unstated spec as a verified difference.
Every published spec, side by side
| Spec | DEWALT DCF809B | DEWALT DCF850B |
|---|---|---|
| Max torque (manufacturer rating)DiffersDCF850B: +125 in-lbs (+7.4%) | 1,700 in-lbs | 1,825 in-lbs |
| Max speedDiffersDCF850B: +450 rpm (+16.1%) | 2,800 rpm | 3,250 rpm |
| Tool lengthMaker's wording, not ranked or compared | 5.1 in | under 4 in (DEWALT's wording) |
| Motor | Brushless | Brushless |
| Batteries in box | 0 | 0 |
| Battery capacity (each) | None included | None included |
| Charger in box | No | No |
| Chuck type | Hex | Hex |
| Chuck size | 1/4 in | 1/4 in |
| Case | No Case Included | No Case Included |
| Warranty | 3 Year Limited Warranty, 1 Year Free Service, 90 Days Satisfaction Guaranteed | 3 Year Limited Warranty, 1 Year Free Service, 90 Days Satisfaction Guaranteed |
| Speed settingsOnly one listed | Not on maker page | 3 |
"Differs" marks different published values; pure formatting is not counted. "Only one listed" marks a spec only one maker page gives. Box contents, owner ratings, manuals and sources are on each model's own page: DCF809B, DCF850B. Swap either model in the compare tool. copied copied
DEWALT DCF809B
Max torque 1,700 in-lbsMax speed 2,800 rpmTool length 5.1 in
Paid link: we may earn a commission.
Find DCF809B prices on Amazon Find DCF809B prices at eBay Opens the retailer in a new tab; the current price is shown there. Marketplace sellers vary: check the seller and exact model.DEWALT DCF850B
Max torque 1,825 in-lbsMax speed 3,250 rpmTool length under 4 in (DEWALT's wording)
Paid link: we may earn a commission.
Find DCF850B prices on Amazon Find DCF850B prices at eBay Opens the retailer in a new tab; the current price is shown there. Marketplace sellers vary: check the seller and exact model.Sources
- DEWALT US product page DCF809B (features), retrieved 2026-10-18
- DEWALT US product page DCF850B (features), retrieved 2026-10-18
Spotted a wrong number? Report a spec error (opens an email with both models filled in). We re-check against the makers' pages and correct the page.
Researched by Rob, licensed electrician (Australia), 18 years on the tools. Found an error? Tell us.
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