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DEWALT 20V Oscillating Tool or DEWALT Oscillating Tool? Which DEWALT Model to Buy

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You are deciding between the dewalt 20v oscillating tool vs oscillating tool. Both models share DEWALT’s Quick-Change system and universal accessory adaptors. The main difference is power source. One is cordless with a brushless motor. The other is corded with a 3-amp motor. You also need to consider included accessories and weight. This guide compares their specs to help you choose the right kit for your workshop or job site.

Key differences

AspectDEWALT 20V Brushless Cordless Oscillating Tool KitDEWALT 3-Amp Corded Oscillating Tool
Power SourceCordless, 20V MAXCorded
Motor TypeBrushless3-Amp
Speed Control3-speed selector and variable triggerVariable speed trigger
Battery IncludedYes, with chargerNot listed
Included AccessoriesWood blades, sandpaper, tool bag29-piece kit with storage box
Weight5.4 pounds12 ounces

Which one should you choose?

Choose DEWALT 20V Brushless Cordless Oscillating Tool Kit if

  • You need cordless freedom for jobs without easy power access.
  • You want a brushless motor for extended run time.
  • You prefer a lighter tool for overhead work.

Choose DEWALT 3-Amp Corded Oscillating Tool if

  • You want continuous power without worrying about battery charge.
  • You need a lightweight tool for reduced fatigue.
  • You want a comprehensive 29-piece accessory kit included.

Verdict: Choose the cordless model if you prioritize mobility and longer run time from the brushless motor. Pick the corded version if you need unlimited power and a lighter weight for detailed work. Both tools offer the same quick-change accessory system and universal compatibility.

Cordless Brushless vs Corded Power

Power source

Edge: Tie

Product A is a cordless 20V MAX tool powered by a battery. You need to charge the battery before use and manage runtime. Product B is a corded tool with a 3-amp motor. It plugs directly into a wall outlet for continuous power. You do not need to worry about battery levels or charging time with the corded model. The corded option offers unlimited runtime as long as you have access to an outlet. The cordless model provides freedom from cords but requires battery management for extended jobs.

Motor type

Edge: DEWALT 20V Brushless Cordless Oscillating Tool Kit

Product A features a brushless motor. DEWALT states this delivers up to 57% more run time over brushed motors. This efficiency helps extend battery life during use. Product B uses a powerful 3-amp motor. The data does not specify if this is brushed or brushless, but it provides strong performance for cutting and sanding. The brushless motor in Product A is designed for efficiency and longer tool life. The 3-amp motor in Product B relies on direct electrical connection for consistent power output.

Included accessories

Edge: DEWALT 3-Amp Corded Oscillating Tool

Product A includes wood blades, sandpaper, and a tool bag. It also comes with a battery and charger. The accessory selection is basic but sufficient for general tasks. Product B includes a 29-piece accessory kit with a storage box. This kit contains popular cutting and sanding attachments. The corded model provides significantly more accessories out of the box. If you need a wide variety of blades and pads immediately, Product B offers a more comprehensive starter package with organized storage.

Speed control

Edge: DEWALT 3-Amp Corded Oscillating Tool

Product A has a 3-speed selector. You can choose from three fixed speed settings based on your application. It also features a Dual-Grip variable speed trigger for fine control. Product B has a variable speed trigger. This allows you to adjust the speed continuously while working. The variable trigger on the corded model offers more granular control for delicate tasks. The 3-speed selector on the cordless model provides preset options for common materials. Both tools allow you to adjust speed during operation for better performance.

Weight and portability

Edge: DEWALT 3-Amp Corded Oscillating Tool

Product A weighs 5.4 pounds. This weight includes the tool, battery, and charger in the kit. The tool itself is lighter, but the battery adds significant mass. Product B weighs only 12 ounces. As a corded tool, it is much lighter and easier to handle for overhead work or extended periods. The lack of a battery makes Product B more portable in terms of weight. However, you must manage the power cord with the corded model. For pure tool weight, the corded option is far lighter.

Additional features

Edge: DEWALT 3-Amp Corded Oscillating Tool

Product B includes a bright LED light to illuminate dark work surfaces. It also features a guide system to set depth or height for accurate repeatability. These features help with precision in low-light conditions. Product A does not list an LED light or a depth guide in the provided data. The cordless model focuses on speed settings and brushless efficiency. The corded model offers more auxiliary features for accuracy and visibility. If you need precise depth control or work in dim areas, Product B has the advantage.

Which DEWALT Oscillating Tool Fits You

Users needing cordless freedom and long runtime

Our pick: DEWALT 20V Brushless Cordless Oscillating Tool Kit

This model uses a brushless motor for up to 57% more run time than brushed versions. You get a 20V battery and charger included. The 3-speed selector lets you adjust power for different materials. It weighs 5.4 pounds and comes with wood blades, sandpaper, and a tool bag for immediate use.

Professionals requiring continuous power and depth control

Our pick: DEWALT 3-Amp Corded Oscillating Tool

The 3-amp corded motor provides constant power without worrying about battery charge. A built-in LED light illuminates dark work surfaces for accuracy. The guide system allows you to set depth for repeatability. It includes a 29-piece accessory kit with a storage box, offering extensive tool variety for cutting and sanding tasks.

Those prioritizing lightweight portability and less weight

Our pick: DEWALT 3-Amp Corded Oscillating Tool

This corded tool weighs only 12 ounces, making it significantly lighter than the 5.4-pound cordless option. The compact design reduces fatigue during extended overhead or tight-space work. You still get the Quick-Change system for fast blade swaps and a universal adaptor for compatibility with most accessory brands on the market.

The products compared

DEWALT 20V Brushless Cordless Oscillating Tool Kit

Best for: Users wanting a complete cordless kit with runtime

Power Source
Cordless
Voltage
20V
Motor Type
Brushless
Speed Settings
3 speed selector
Accessory Interface
Universal accessory adaptor
Blade Change
Quick-Change

View on Amazon: DEWALT 20V Brushless Cordless Oscillating Tool Kit Affiliate link

This cordless DEWALT oscillating tool features a brushless motor for extended run time. It includes a 20V battery, charger, and a tool bag with wood blades and sandpaper. The three-speed selector and dual-grip trigger offer precise control. Its quick-change system allows tool-free accessory swaps. This kit suits users who need portable power and versatility for various cutting and sanding tasks without a cord.

Pros

  • Brushless motor delivers up to 57% more run time
  • Includes 20V battery, charger, and carrying tool bag
  • Quick-Change tool-free accessory system for fast swaps
  • Three-speed selector for application-specific control

Cons

  • Heavier at 5.4 pounds compared to tool-only versions
  • Only three speed settings limit fine-tuning options
  • Requires purchasing additional batteries for extended use

Good fit if

  • You need a complete kit ready to use out of the box
  • You prioritize longer run time over minimal weight
  • You work in areas without easy access to power outlets

Skip if

  • You already own compatible 20V DEWALT batteries
  • You prefer a lighter tool for overhead work
  • You need more than three speed settings for precision

Verdict: DEWALT 20V Brushless Oscillating Tool Kit is ideal for DIYers who want a complete, cordless solution with extended runtime. It fits users who value convenience and do not mind the extra weight for a fully equipped package.

DEWALT 3-Amp Corded Oscillating Tool

Best for: Users needing universal blade compatibility

Power Source
Corded
Speed Settings
Variable speed trigger
Accessory Interface
Universal accessory adaptor
Blade Change
Tool-free, Quick-Change
Included Accessories
29-piece accessory kit with storage box
Included Tools
Oscillating Tool

View on Amazon: DEWALT 3-Amp Corded Oscillating Tool Affiliate link

This DEWALT oscillating tool uses a 3-amp motor for consistent cutting and sanding power. It features a quick-change system for tool-free blade swaps and a universal adapter to accept most brands. The dual-grip variable speed trigger offers precise control, while the guide system helps set accurate depth. It includes a 29-piece accessory kit. You should choose this model if you prefer corded reliability and frequent accessory changes.

Pros

  • 3-amp motor delivers strong performance
  • Quick-Change tool-free blade system
  • Universal accessory adaptor included
  • Built-in guide system for depth control

Cons

  • Corded power limits mobility
  • No variable speed dial
  • Heavier than cordless alternatives

Good fit if

  • You need constant power for long cuts
  • You work with multiple accessory brands
  • You want precise depth settings

Skip if

  • You need cordless freedom
  • You require a compact design
  • You prefer digital speed controls

Verdict: DEWALT DWE315K 3-Amp Corded Oscillating Tool suits users who prioritize steady power and universal compatibility over battery portability. It is ideal for stationary tasks where cord management is not a barrier.

Specifications side by side

Spec DEWALT 20V Brushless Cordless Oscillating Tool Kit DEWALT 3-Amp Corded Oscillating Tool
Power Source Cordless Corded
Voltage 20V not stated
Motor Type Brushless not stated
Speed Settings 3 speed selector Variable speed trigger
Accessory Interface Universal accessory adaptor Universal accessory adaptor
Blade Change Quick-Change Tool-free, Quick-Change
Battery Included Battery and charger included not stated
Included Accessories Wood Blades, Sandpaper, Tool Bag 29-piece accessory kit with storage box
Included Tools Oscillating Tool Oscillating Tool
Dimensions 12.7 × 9.13 × 3.62 inches 17.3 × 5 × 9.75 inches
Weight 5.42 pounds 12 ounces
Size One Size One Size
Color Yellow Yellow
Model DCS356SD1 DWE315K

Frequently asked questions

Is the DEWALT 20V brushless model heavier than the corded version?

Yes, the cordless kit is significantly heavier. The DEWALT 20V Brushless Cordless Oscillating Tool Kit weighs 5.4 pounds. This includes the tool, battery, and charger. In contrast, the DEWALT 3-Amp Corded Oscillating Tool weighs only 12 ounces. The corded unit is much lighter because it lacks a battery pack. You trade portability for reduced weight with the corded option.

Does the cordless DEWALT oscillating tool come with a battery?

Yes, the kit includes both a battery and a charger. The DEWALT 20V Brushless Cordless Oscillating Tool Kit provides a complete power solution. You do not need to purchase separate components to start working. The included battery allows for immediate use. This setup is ideal for users who want a ready-to-go cordless system without extra purchases.

What is the physical size difference between the two models?

The corded tool is longer but narrower. The DEWALT 3-Amp Corded Oscillating Tool measures 17.3 inches in length and 5 inches in width. The cordless kit is shorter but wider. The DEWALT 20V Brushless Cordless Oscillating Tool Kit measures 12.7 inches in length and 9.13 inches in width. You should consider your storage space and handling preference when choosing between these dimensions.

Which model offers universal blade compatibility?

Both models offer universal accessory adaptors. The DEWALT 3-Amp Corded Oscillating Tool is noted for its universal blade compatibility. The cordless 20V model also shares this feature through the Quick-Change system. You can use standard oscillating accessories with either tool. This compatibility ensures you can switch blades easily for various cutting or grinding tasks.

Is the cordless tool suitable for stationary tasks?

The corded model is better suited for stationary tasks. The DEWALT 3-Amp Corded Oscillating Tool provides steady power without battery management. It is ideal for work where cord management is not a barrier. The cordless 20V model offers mobility but requires runtime management. If you stay in one spot, the corded version offers consistent performance without worrying about charge levels.

What power source does the DEWALT 3-Amp model use?

It uses a direct corded power source. The DEWALT 3-Amp Corded Oscillating Tool plugs directly into an electrical outlet. It does not rely on a battery. This provides continuous power as long as it is plugged in. You do not need to wait for charging or swap batteries. This makes it a reliable choice for long-duration jobs where power consistency is critical.

See also