Makita XDT20ZvsDEWALT DCF850B
Two impact drivers, compared from their makers' published US specs. Specs checked 2026-10-18. Makers do not always rate the same way, so treat cross-brand figures with care.
Makita XDT20Z
Max torque 1,590 in-lbsMax speed 0 - 1,100 / 0 - 2,100 / 0 - 3,200 / 0 - 3,600 RPMImpact rate 0 - 1,100 / 0 - 2,600 / 0 - 3,600 / 0 - 3,800 IPM
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Find XDT20Z prices on Amazon Find XDT20Z prices at Acme Tools 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 Check the DCF850B price at Acme Tools 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
- Already own Makita 18V LXT batteries? The XDT20Z uses them; the DCF850B needs DEWALT 20V MAX batteries and a charger.
- Already own DEWALT 20V MAX batteries? The DCF850B is the one that fits what you have.
- Starting from nothing: this is a battery-system choice more than a tool choice; compare the kit versions (XDT20T, DCF850E1), which add batteries and a charger.
From the published figures only; no testing. Rated figures from different makers are not measured the same way.
Where they differ
- Different battery systems: Makita 18V LXT vs DEWALT 20V MAX. Batteries and chargers do not interchange.
- DEWALT DCF850B: more torque (1,825 in-lbs vs 1,590 in-lbs).
- Makita XDT20Z: higher top speed (0 - 1,100 / 0 - 2,100 / 0 - 3,200 / 0 - 3,600 RPM vs 3,250 rpm).
- Both are bare tools: no battery or charger in either box.
9 of 14 listed specs differ or are listed by only one maker. Stated from the published figures only; no testing.
Every published spec, side by side
| Spec | Makita XDT20Z | DEWALT DCF850B |
|---|---|---|
| Max torque (manufacturer rating)DiffersDCF850B: +235 in-lbs (+14.8%) | 1,590 in-lbs | 1,825 in-lbs |
| Max speedDiffersXDT20Z: +350 RPM (+10.8%) | 0 - 1,100 / 0 - 2,100 / 0 - 3,200 / 0 - 3,600 RPM | 3,250 rpm |
| Impact rateOnly one listed | 0 - 1,100 / 0 - 2,600 / 0 - 3,600 / 0 - 3,800 IPM | Not on maker page |
| Tool length | 4-1/2 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 sizeOnly one listed | 1/4 in | Not on maker page |
| Speed settingsOnly one listed | 4 | Not on maker page |
| Weight with batteryOnly one listed | 3.3 lbs | Not on maker page |
| Chuck typeOnly one listed | Not on maker page | Hex |
| CaseOnly one listed | Not on maker page | No Case Included |
| WarrantyOnly one listed | Not on maker page | 3 Year Limited Warranty, 1 Year Free Service, 90 Days Satisfaction Guaranteed |
"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: XDT20Z, DCF850B. Swap either model in the compare tool. copied
Makita XDT20Z
Max torque 1,590 in-lbsMax speed 0 - 1,100 / 0 - 2,100 / 0 - 3,200 / 0 - 3,600 RPMImpact rate 0 - 1,100 / 0 - 2,600 / 0 - 3,600 / 0 - 3,800 IPM
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Find XDT20Z prices on Amazon Find XDT20Z prices at Acme Tools 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 Check the DCF850B price at Acme Tools 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 DCF850B (features), retrieved 2026-10-18
- Makita US product page XDT20Z, 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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