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Prices may varyThis product ranks #4 of 12 in Impact Wrenches.Three above it ↓
Last reviewed May 26, 2026
TL;DR Mid-range cordless ½" wrench (600 ft-lbs fastening / 800 ft-lbs breakaway per manufacturer) on DeWalt 20V MAX; no independent US safety certification confirmed.
Brushless cordless ½" hog ring impact wrench rated at 600 ft-lbs fastening and 800 ft-lbs breakaway torque. Runs on DeWalt 20V MAX batteries (200+ compatible tools). Weighs 4.3 lbs with 4-speed modes for precision fastening control. No independent torque meter test was located; community evidence draws from fastener-removal outcomes only. Well-rated by a large owner base, with no stall-out pattern reported on standard passenger-car and light-truck lug nuts. Electric · no air compressor required.
Home mechanics doing tire rotations and light under-car work on passenger vehicles already on the 20V MAX platform will find this capable and convenient. Skip it if your primary use is heavy-duty truck wheel studs or seized suspension bolts · a higher-torque model with community-confirmed 700+ ft-lbs real-world output serves those better.
No UL or ETL certification confirmed as of 2026-05-17. Li-ion battery; no documented thermal incidents. Hearing protection situationally appropriate for extended use. Standard e-waste disposal; Call2Recycle handles the battery pack.
No. The DCF891B is a bare tool · it includes the impact wrench and a belt clip only. A compatible DeWalt 20V MAX battery and charger are sold separately. The wrench works with any DeWalt 20V MAX battery across the platform's Ah options.
Community evidence from owner reviews supports reliable lug nut removal on standard passenger vehicles and light trucks. No independent calibrated torque meter test was located · the 600 ft-lbs fastening / 800 ft-lbs breakaway spec is from the manufacturer. For heavy-duty truck wheel studs or severely seized suspension bolts, consider DeWalt's higher-torque DCF899B (700 ft-lbs fastening) or a model with community-confirmed 700+ ft-lbs real-world output.
No independent US safety certification (UL or ETL) was confirmed for the DCF891B as of 2026-05-17. The UL Product iQ lookup was inconclusive for this model number, and the product listing does not state CE certification. The health score reflects a certification deduction.
The Amazon listing for DEWALT DEWALT DCF891B 20V MAX XR ½" Cordless Impact Wrench carries a California Prop 65 warning. California requires this warning on a very wide range of manufactured goods — including electronics with wiring, solder joints, or plastic/metal housings — whenever trace exposure to any of roughly 900 listed substances (commonly phthalates or heavy metals) is possible, regardless of whether the specific product poses a meaningful health risk. As a passive electronics product, DEWALT DEWALT DCF891B 20V MAX XR ½" Cordless Impact Wrench has no Safety Data Sheet, so there's no chemistry breakdown to translate beyond that.
Marketing copy from DEWALT, via Amazon. Not editorial.
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