DEWALT DCF845B 20V Max XR 1/4 in Impact Driver
- Torque: 1825 in-lb
- Maximum Torque: 1825 in-lb
- Power Source: Battery
- Maximum Rotational Speed: 3400 rpm
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact 20V impact driver at about 2.2 pounds with a 3400 RPM top speed. A practical fit for anyone already using DeWalt 20V batteries.
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ASIN: B0BQCWH5KFModel: DCF845BCategory: Impact Drivers & Wrenches
Overview
DeWalt's DCF845B impact driver runs on the 20V MAX platform, spinning to 3400 RPM at a listed weight of about 1 kilogram. It is built as a compact driver for repetitive fastening work.
Weight matters more than raw numbers suggest when you are driving screws overhead for an hour, and the DCF845B's roughly 2.2 pounds should help there. As with the other DeWalt tool in this batch, no seller description or review text accompanies the listing, so this page works from the spec sheet alone.
- 4.7 average rating
- 20 volt battery power source
Who it's for
Tradespeople doing repetitive fastening work who want a lighter impact driver and are already on DeWalt's 20V battery system. Not the pick for someone needing documented torque figures before buying, since none are listed here.
Pros and cons
- Light at about 1 kilogram
- 3400 RPM top speed
- Runs on DeWalt's 20V MAX batteries
- No torque specification listed
- Battery inclusion not confirmed
Performance notes
The 3400 RPM top speed points to quick driving on standard fasteners, and the roughly 1 kilogram weight should ease fatigue during extended use. No torque or impacts-per-minute figures are given, so heavy-duty capability cannot be confirmed from this data.
Specifications
| Brand | DeWALT |
|---|---|
| Model | DCF845B |
| Dimensions & fit | |
| Maximum Chuck Size | 0.5 Inches |
| Item Weight | 2.2 poundslower than 64% of 184 impact drivers & wrenches |
| Item Dimensions L X W X H | 5.1 × 3.4 × 8.1 inches |
| Capacity & performance | |
| Maximum Rotational Speed | 3400 rpmhigher than 73% of 71 impact drivers & wrenches |
| Speed | 3400 RPM |
| Drilling Capacity Wood | 0.2 inches |
| Drilling Capacity Metal | 0.5 inches |
| Number Of Speeds | 3 |
| Power & efficiency | |
| Power Source | Battery |
| Voltage | 20 voltshigher than 54% of 171 impact drivers & wrenches |
| Maximum Power | 300 watts |
| Construction & materials | |
| Material Type | Metal With Possibly Some Secondary Plastic Parts |
| Color | Black, Yellow |
| Compatibility & installation | |
| Compatible Devices | DEWALT 20V MAX Batteries (not Including The Tool Itself) |
| Included components | |
| Unit Count | 1 |
| Included Components | Impat Driver Tool Only |
| Warranty & support | |
| Manufacturer Warranty Description | Manufacturer Warranty |
| Other details | |
| Torque | 1825 in-lbhigher than 64% of 75 impact drivers & wrenches |
| Maximum Torque | 1825 in-lbhigher than 66% of 68 impact drivers & wrenches |
| Drill Type | Impact Driver |
| Is Electric | Yes |
| Item Type Name | Impact Driver |
| Additional Features | Variable Speed |
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Frequently asked questions
What is the top speed of the DCF845B?
It is rated at 3400 RPM.
How much does the DCF845B weigh?
About 1 kilogram, roughly 2.2 pounds.
Does the DCF845B need a specific battery?
It runs on DeWalt's 20V MAX battery platform.