Description
Product Overview
The DeWalt DCF845B 20V MAX XR® Brushless 3-Speed Impact Driver* is DeWalt’s newest and most powerful 1/4-inch impact driver in the XR compact class. It features a highly efficient brushless motor that delivers significantly more torque (1,825 in-lbs) than the older DCF885 or DCF887 models while remaining lightweight and compact. As a “bare tool,” it is designed for users who already have DeWalt batteries.
What’s Included in the Box
1 x DCF845 20V MAX* XR® 1/4″ Impact Driver
1 x Belt Hook
(Note: Battery and Charger are NOT included)
Technical Specifications
| Specification | Detail |
| Voltage | 20V MAX* |
| Max Torque | 1,825 in-lbs |
| No Load Speed | 0-3,400 RPM |
| Impacts/Min | 0-4,200 IPM |
| Chuck Size | 1/4″ Hex (Quick-Release) |
| Speed Settings | 3-Speed Selector |
| Tool Length | 5.1 inches (Very Compact) |
| Tool Weight | 2.0 lbs (Tool Only) |
| Motor Type | Brushless |
Key Features
3-Speed Selector: Allows you to switch between applications:
Speed 1: Precision Drive™ (prevents overtightening/stripping screws).
Speed 2: Normal Impacting.
Speed 3: High-Speed Impacting (3,400 RPM).
Brushless Motor: Delivers up to 30% more torque than the DCF885 and significantly longer runtime.
Ultra-Compact: At only 5.1 inches long, it is designed to fit into extremely tight spaces (like between studs or inside cabinets).
3-LED Light Ring: Provides visibility without shadows; lights are positioned around the chuck for direct illumination of the fastener.
Warranty & Service
3-Year Limited Warranty
1-Year Free Service Contract
90-Day Money-Back Guarantee
Common Use Cases
This tool is ideal for deck builders, HVAC installers, and cabinet makers. It is the go-to tool for driving long deck screws, lag bolts, or self-tapping metal screws where speed and torque are required but space is limited.
*Note: “20V MAX” refers to the maximum initial battery voltage (measured without a workload), which is 20 volts. Nominal voltage is 18 volts.
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