# TLDR Review: DEWALT DCF840 Impact Driver

*Published: 2026-05-21 | Updated: 2026-05-21 | Source: https://shopsavvy.com/reviews-tldr/dewalt-dcf840-impact-driver*

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## Product: DEWALT DCF840 Impact Driver
**Brand:** DEWALT

## Pros
- Compact and lightweight design, making it easy to maneuver in tight spaces
- Brushless motor delivers longer runtime and increased durability
- Includes a 2 Ah Lithium-Ion battery, providing decent run time for most jobs
- 20V power ensures strong performance for driving screws and bolts
- Convenient 1/4 inch drive size, compatible with a wide range of bits
- Quick and easy to switch between applications with minimal effort
- Kit includes everything needed to get started right out of the box
- Generally well-reviewed for reliability and consistent performance
- Good balance of power and portability, ideal for DIYers and professionals alike
- Enjoys positive feedback for its ergonomic grip and comfortable handling

## Cons
- Some review mentions of the impact driver feeling slightly less powerful than larger models
- Battery life might be limited on heavy, prolonged use, requiring multiple batteries for extensive projects
- No included carrying case or storage solution, which could be inconvenient for transport
- May lack some advanced features found in higher-end impact drivers, such as adjustable torque settings
- Limited to a 2 Ah battery capacity, which might not satisfy heavy users needing longer runtime
- No speed or torque adjustment controls, reducing versatility for precise tasks
- An upgrade to models with more torque or additional features may be preferable for industrial use

## Bottom Line

Based on user reviews and manufacturer details, the DEWALT DCF840D1 is a solid choice for those wanting a reliable, easy-to-use impact driver for general tasks. Its brushless motor provides good efficiency and durability, making it suitable for most DIY projects and light professional work. If you need more power or longer runtime for heavy-duty applications, you might want to explore models with larger batteries or more torque. For a compact, dependable impact driver at a fair price, this kit is a great option.

## Pros vs Cons at a Glance

| Pros | Cons |
|------|------|
| Compact and lightweight design, making it easy to maneuver in tight spaces | Some review mentions of the impact driver feeling slightly less powerful than larger models |
| Brushless motor delivers longer runtime and increased durability | Battery life might be limited on heavy, prolonged use, requiring multiple batteries for extensive projects |
| Includes a 2 Ah Lithium-Ion battery, providing decent run time for most jobs | No included carrying case or storage solution, which could be inconvenient for transport |
| 20V power ensures strong performance for driving screws and bolts | May lack some advanced features found in higher-end impact drivers, such as adjustable torque settings |
| Convenient 1/4 inch drive size, compatible with a wide range of bits | Limited to a 2 Ah battery capacity, which might not satisfy heavy users needing longer runtime |
| Quick and easy to switch between applications with minimal effort | No speed or torque adjustment controls, reducing versatility for precise tasks |
| Kit includes everything needed to get started right out of the box | An upgrade to models with more torque or additional features may be preferable for industrial use |
| Generally well-reviewed for reliability and consistent performance |  |
| Good balance of power and portability, ideal for DIYers and professionals alike |  |
| Enjoys positive feedback for its ergonomic grip and comfortable handling |  |

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*About this review: We pulled together findings from professional and user reviews, and cross-referenced them with ShopSavvy's pricing data from thousands of retailers to give you the short version.*