The DeWalt DCF840B is a 20V MAX brushless 1/4 in. impact driver rated at 1,825 in-lbs of torque, enough for large-diameter screws and lag bolts. Its three-speed switch gives finer control than single-speed drivers, and a three-LED ring light covers dim work areas. It is a bare tool: battery and charger are sold separately, and the Tool Connect chip is also extra. Against DeWalt's higher-torque 1/4 in. models it trades peak power for a shorter, lighter body, which suits overhead and cabinet work more than heavy framing.
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Ratings are very high, and owners describe it as a strong, controllable driver for its size. The main friction is that it arrives as a bare tool, so buyers need batteries and a charger already.
This DEWALT 20V MAX XR 1/4 in. impact driver has a brushless motor that delivers 1,825 in./lbs. of maximum torque for driving large diameter screws. It is a lightweight cordless tool.
A 3-speed switch gives the user more control and precision across different applications. A 3-LED on-board work light illuminates dimly lit workspaces.
The driver comes Chip Ready, so a chip (sold separately) can be added to track the tool's location with the DEWALT TOOL CONNECT Site Manager App. Battery and charger are sold separately.
