Specs from the makers' own documentation Battery compatibility built in UK retailer prices, updated daily 25+ years of trade experience
‹ Impact Drivers
18V XR · Brushless DeWalt DCF850N-XJ 18V XR Brushless Compact Impact Driver (Body Only)
Impact Drivers · DeWalt 18V XR

DeWalt DCF850N-XJ 18V XR Brushless Compact Impact Driver (Body Only)

205Nm3-speed + Precision0.95kg bare3 years (with registration)

18V XR Atomic brushless 3-speed compact impact driver. 205Nm, 3250rpm, 3800ipm. Ultra-compact 100mm. Bare unit.

Adds it to My Tools, kept on this device
How do you want it?2 ways to buy · tap one to see what's in the box
Lowest price we track
£114.95at Tooled Up · + £5.95 delivery
Compare retailersTotal with delivery
Tooled Up Lowest£114.95 + £5.95 delivery£120.90View ›
My Tool Shed£114.95 + £5.95 delivery£120.90View ›
Machine Mart£155.00 + £4.99 delivery£159.99View ›
Prices from UK retailer feeds, updated daily.We may earn a commission
205Nm
Max torque
3,250rpm
Max speed
0.95kg
Weight (bare)
1/4" Hex
Bit holder

Where it sits among impact drivers

Against the 39 impact drivers we list. Not a score: bigger isn't always better for your job.

Max torque205Nm
40Nm lowestMakita DTS141highest 282NmDeWalt DCF860
Impacts per minute3,800
2,700 lowestMakita DTS141highest 6,300Milwaukee M18 FIDRQ
Max speed3,250rpm
2,500rpm lowestMakita DTD156highest 3,900rpmMilwaukee M18 FID3
Weight (bare)0.95kg
0.76kg lightestMakita TD111Dheaviest 1.2kgBosch EXDX 18V-210

Full specs

From DeWalt's own documentation. Checked 13/06/2026. Report a spec error ›

Performance

Max torque205 Nm
Torque settings3
Speed settings3
No-load speed0–1000 / 0–2800 / 0–3250
Impacts per minute3,800
MotorBrushless
Impact mechanismStandard
Precision / Assist mode✓ Yes
Voltage18V
Bit holder1/4" Hex
Year released2021

Physical & Build

Weight (bare)0.95 kg
Weight (with battery)1.56 kg
LED work light✓ Yes
Belt clip✓ Yes
Noise level88 dB(A) LpA / 99 dB(A) LwA
Vibration18.5 m/s²
The verdictOur take

The DCF850 is DeWalt's ATOMIC compact impact driver, packing the same 205Nm and 3-speed Precision Drive as the DCF887 into a much shorter 100mm body. That stubby head reaches into joists, cabinets and tight corners the full-size driver cannot. We rate it the pick for XR owners who value access and control; the DCF887 is the slightly longer standard alternative, and the 282Nm DCF860 is there if you need maximum torque.

Powered by DeWalt 18V XR · 12

All 12 batteries that fit this tool, smallest first. Kits and chargers ›

DCBP034 1.7Ah · 30.6Wh 0.32kg 1.27kg from £78.95at Tooled Up + £5.95 delivery View at Tooled Up ›
DCB183 2.0Ah · 36Wh 0.4kg 1.35kg from £44.95at Tooled Up + £5.95 delivery View at Tooled Up ›
DCBP318 3.5Ah · 63Wh 0.58kg 1.53kg from £99.95at Tooled Up + £5.95 delivery View at Tooled Up ›
DCB182 4.0Ah · 72Wh 0.61kg 1.56kg from £49.95at Tooled Up + £5.95 delivery View at Tooled Up ›
DCB184 5.0Ah · 90Wh 0.62kg 1.57kg from £59.95at Tooled Up + £5.95 delivery View at Tooled Up ›
DCB184B 5.0Ah · 90Wh 0.62kg 1.57kg No retailer price yet About this battery ›
DCBP518 5.0Ah · 90Wh 0.75kg 1.7kg from £122.95at Tooled Up + £5.95 delivery View at Tooled Up ›
DCB546 6.0Ah · 108Wh · via DeWalt 18V/54V FlexVolt 1.08kg 2.03kg from £99.95at Tooled Up + £5.95 delivery View at Tooled Up ›

Tool weight worked out by adding each pack's weight to the bare tool, using the makers' figures. The maker's own with-battery figure can differ slightly. We may earn a commission on retailer links.

Warranty · 3yr

Up to 3 years1 year as standard, 3 once you register it with DeWalt
Register with DeWalt ›
Register within 28 days of buying Own one? Add it to My Tools and we'll remind you before the 28 days run out

Register within 4 weeks. Batteries/chargers excluded (PowerStack eligible). Nailers and other fastening tools are excluded and keep 1 year. Kit tools registered individually.

Warranty terms are set by the maker and can change. Always confirm current cover on their site before you buy.

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