DEWALT DCF845B Impact Review
Our verdict
The DEWALT DCF845B is a 20-volt MAX bare-tool impact driver with 12,700 reviews and a 4.7-star rating, making it the most extensively reviewed option in this batch by a wide margin. At $123.97 it sits in the mid-range for bare tools and delivers consistent real-world results across the largest verified sample available.
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DEWALT 20V MAX platform users and anyone who wants maximum verified buyer confidence before purchasing an impact driver
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You need a kit with batteries included, or you are not already on the DEWALT 20V MAX platform
- Power Source Battery Powered
- Voltage 20 Volts
- Speed 3400 RPM
- Weight 1 Kilograms
Our scorecard
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Owner rating4.7/5
4.7 average across 12,700 owner ratings
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Popularity5.0/5
12,700 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other power tools and workshop machinery we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
The DEWALT DCF845B runs on the 20-volt MAX battery platform and reaches 3,400 RPM no-load at a total weight of 1 kilogram. The -B suffix designates this as a bare tool. What distinguishes the DCF845B most from a data standpoint is its review count: 12,700 verified ratings at 4.7 stars means its quality assessment is grounded in far more evidence than any other impact driver in this group. Around 1,000 units are bought per month, confirming it as an actively purchased product, not a legacy listing coasting on old sales.
At $123.97 for the tool alone, the DCF845B sits in a reasonable range for experienced tradespeople and serious DIYers who are already invested in DEWALT's extensive 20V MAX ecosystem. The 1-kilogram weight (roughly 2.2 pounds) keeps it in a comfortable range for repetitive or overhead fastening.
Based on specs and verified owner reviews, this driver handles the full range of standard construction fastening tasks well. The 3,400 RPM speed is competitive without being the absolute fastest in the group, reflecting a balance between speed and control that suits a wide range of operators.
Pros
- 12,700 reviews at 4.7 stars is the largest and highest-confidence rating pool in this batch
- 20-volt MAX platform provides access to DEWALT's wide range of compatible batteries
- 3,400 RPM no-load speed is well suited to general construction and fastening
- 1 kilogram weight balances usability across different work positions
- Roughly 1,000 monthly buyers confirms sustained real-world demand
Cons
- Bare tool only at $123.97 requires separate 20V MAX battery purchase
- No torque or amperage figure published in the listed specs
- 3,400 RPM trails some 18-volt competitors that reach 3,900 RPM
Specifications
| Power Source | Battery Powered |
|---|---|
| Voltage | 20 Volts |
| Speed | 3400 RPM |
| Weight | 1 Kilograms |
Performance notes
Battery-powered on the DEWALT 20-volt MAX platform. No-load speed 3,400 RPM, weight 1 kilogram. Tool only (no battery). Suited to framing, decking, structural fastening, and general construction tasks. No amperage or torque spec is published in the available listing data.
What buyers say
With 12,700 reviews, the sentiment picture is more complete than most tools in this space. Owners consistently highlight reliable performance across varied project types and easy compatibility with existing 20V MAX batteries. Recurring criticisms are minor, touching on belt clip design and the absence of a battery in the box for new buyers.
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Frequently asked questions
Does the DEWALT DCF845B include a battery or charger?
No. The -B designation means this is a bare tool. A compatible 20V MAX battery and charger must be purchased separately or sourced from an existing DEWALT kit.
How does the DEWALT DCF845B differ from the DCF845P1 or DCF845D1E1?
The DCF845B is the bare tool at $123.97. The DCF845P1 and DCF845D1E1 are kit variants that include batteries and charger, reflected in their higher prices of $198.89 and $175.00 respectively.
Need help choosing the right DEWALT 20V MAX impact driver? Email hello@toolgalaxy.com.
The ToolGalaxy team can help you compare bare-tool vs kit options based on your current battery inventory and project needs.