BLACK+DECKER vs WORX: String Trimmers Compared by Specs
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When comparing a black decker vs WORX string trimmer, you look at voltage, cutting width, and included tools. Both brands offer cordless battery-powered options for yard maintenance. The BLACK+DECKER model provides a higher voltage system and a wider 13-inch cutting swath. The WORX kit operates at 20V but includes additional attachments like a hedge trimmer and blower. You decide based on whether you need raw cutting power or tool versatility.
Key differences
| Aspect | BLACK+DECKER 40V 13-Inch String Trimmer and Edger | WORX WG931 20V 3-in-1 Kit |
|---|---|---|
| Voltage | 40V | 20V |
| Cutting Width | 13 in | 12 in |
| Line Feed System | Automatic (AFS) | Command Feed (button) |
| Included Attachments | Trimmer/Edger only | Trimmer/Edger, Hedge Trimmer, Blower |
| Weight | 7.8 pounds | 17.7 pounds |
Which one should you choose?
Choose BLACK+DECKER 40V 13-Inch String Trimmer and Edger if
- You prefer a higher voltage system for tackling thicker weeds.
- You want a lighter tool that is easier to maneuver.
- You prefer automatic line feed without manual bumping.
Choose WORX WG931 20V 3-in-1 Kit if
- You need a hedge trimmer and leaf blower in addition to the trimmer.
- You already own other WORX 20V tools for battery compatibility.
- You want the flexibility to switch between multiple yard tasks quickly.
Verdict: The BLACK+DECKER model suits users who prioritize cutting power and a lighter, dedicated trimmer. The WORX kit is better for those who want a multi-tool system with hedge trimming and blowing capabilities. Your choice depends on whether you need specialized cutting performance or general yard maintenance versatility.
Specs Compare BLACK+DECKER vs WORX
Voltage system
The BLACK+DECKER 40V 13-Inch String Trimmer and Edger operates on a 40V Max lithium-ion battery system. This higher voltage platform generally supports more robust motor performance for tough jobs. In contrast, the WORX WG931 20V 3-in-1 Kit uses a 20V battery. While 20V is sufficient for light to medium yard work, the 40V system offers a distinct advantage in raw power potential. If you frequently tackle thick weeds or dense brush, the higher voltage of the BLACK+DECKER model provides a clear edge in cutting efficiency and sustained performance under load.
Cutting width
Cutting swath determines how much area you cover per pass. The BLACK+DECKER trimmer features a 13-inch cutting width. The WORX kit includes a 12-inch string trimmer head. The one-inch difference may seem minor, but over large lawns, the wider swath of the BLACK+DECKER model reduces the number of passes required. This can save time and reduce physical fatigue during extended trimming sessions. The WORX 12-inch width is standard for many compact trimmers, but the BLACK+DECKER offers a slight practical advantage for efficiency in larger yards.
Line feed system
How the trimmer adds line affects convenience. The BLACK+DECKER uses an Automatic Feed Spool (AFS) system. This supplies trimmer line as needed without requiring you to bump the head on the ground. The WORX WG931 utilizes a Command Feed system, which requires you to push a button to release more line. Automatic feed is generally more convenient for continuous use, as it allows you to focus on cutting rather than managing line length manually. This feature gives the BLACK+DECKER a practical advantage for users who value hands-free operation.
Included tools
Versatility depends on what comes in the box. The WORX WG931 is a 3-in-1 kit that includes a string trimmer/edger, a 22-inch hedge trimmer, and a 360 CFM blower. The BLACK+DECKER model is a 2-in-1 trimmer and edger only. If you need to trim hedges or blow leaves, the WORX kit provides significant value by bundling these tools together. The BLACK+DECKER focuses solely on trimming and edging. For users seeking multiple functions from a single purchase, the WORX kit is the superior choice.
Weight and portability
Weight impacts comfort during extended use. The BLACK+DECKER trimmer weighs 7.8 pounds. The WORX WG931 kit weighs 17.7 pounds, reflecting its additional hedge trimmer and blower attachments. The lighter BLACK+DECKER model is easier to maneuver and less tiring to hold overhead or for long periods. The heavier WORX kit requires more strength and stability. If you prioritize ease of handling and reduced fatigue, the BLACK+DECKER is the better option. The WORX weight is justified by its multi-tool capabilities, but it demands more physical effort.
Choose your trimmer based on specs
Users needing high power for thick weeds
This BLACK+DECKER model uses a 40V system with a 2.0Ah battery. It delivers up to 8500 RPM for efficient cutting. The 13-inch cutting swath handles wider areas faster. The PowerDrive transmission sends more power to the string. You also get a 13-inch cutting width for broader coverage.
Those wanting a complete yard tool kit
The WORX WG931 is a 3-in-1 kit. It includes a 12-inch trimmer, a 22-inch hedge trimmer, and a blower. You get all three tools in one package. The 20V system works with other WORX tools. This kit replaces multiple single-purpose devices with one versatile bundle for various yard tasks.
Gardeners preferring automatic line feed systems
This trimmer features an automatic feed spool system. It supplies trimmer line as needed without bumping. This enhances convenience during extended use. The PowerCommand dial lets you choose between max power or runtime. You can adjust performance based on weed thickness or area size for optimal efficiency.
The products compared
BLACK+DECKER 40V 13-Inch String Trimmer and Edger
Best for: Versatile trimming and edging tasks
- Voltage
- 40V
- Cutting Swath
- 13 in
- Power Source
- battery
- Line Feed System
- automatic
- Battery Capacity
- 2.0Ah
- Cutting Width
- 13-Inch
View on Amazon: BLACK+DECKER 40V 13-Inch String Trimmer and Edger Affiliate link
This BLACK+DECKER tool is a 40V cordless string trimmer and edger with a 13-inch cutting swath. It features an automatic feed spool for continuous line supply and a PowerCommand dial to switch between max power and runtime. The unit weighs 7.8 pounds and includes a fast charger that restores a 2.0Ah battery in two hours. It suits users needing a versatile 2-in-1 device for lawn maintenance.
Pros
- Automatic feed spool eliminates manual bumping
- PowerCommand dial adjusts power versus runtime
- Converts to edger in seconds
- Fast charger restores battery in 2 hours
Cons
- Smaller 13-inch cutting swath
- Heavier 7.8-pound build
- Lower 2.0Ah battery capacity
Good fit if
- You want a trimmer that converts to an edger
- You prefer automatic line feed over bumping
- You need adjustable power settings for different weeds
Skip if
- You need a wider cutting swath for large areas
- You prefer a lighter tool for overhead use
- You already have a compatible 40V battery system
Verdict: BLACK+DECKER 40V 13-Inch Trimmer Edger fits homeowners who value the convenience of automatic line feed and the versatility of a 2-in-1 design for moderate lawn tasks.
WORX WG931 20V 3-in-1 Kit
Best for: trimming, hedging, and blowing with one battery
- Voltage
- 20V
- Cutting Swath
- 12"
- Power Source
- battery
- Line Feed System
- push-button
- Battery Capacity
- 2.0Ah
- Cutting Width
- 22-Inch
View on Amazon: WORX WG931 20V 3-in-1 Kit Affiliate link
This WORX WG931 kit combines a 12-inch string trimmer, a 22-inch hedge trimmer, and a 360 CFM blower into one 20V system. It uses command feed for line extension and dual-action blades for cutting. The 17.7-pound unit fits users who want to handle trimming, edging, and blowing with a single battery platform. It suits those who prefer a compact, multi-tasking tool over separate devices.
Pros
- Converts from trimmer to wheeled edger in seconds
- 22-inch dual-action hedge trimmer blades cut twice per cycle
- Turbine blower delivers 360 CFM and 75 MPH air speed
- Uses WORX Power Share 20V batteries compatible with other tools
Cons
- 20V system may have less runtime than higher voltage options
- 12-inch cutting swath is narrower than some dedicated trimmers
- Blower is not the highest speed available in the lineup
Good fit if
- You want to trim, edge, and blow with one battery
- You need a hedge trimmer for regular maintenance
- You prefer command feed line extension over bump feed
Skip if
- You require a 40V system for maximum power
- You only need a basic string trimmer without extras
- You prefer a wider cutting swath for large areas
Verdict: WORX WG931 20V 3-in-1 Kit is a versatile bundle for homeowners who want to trim, hedge, and blow with a single 20V battery. It fits users who value compact versatility over raw cutting width.
Specifications side by side
| Spec | BLACK+DECKER 40V 13-Inch String Trimmer and Edger | WORX WG931 20V 3-in-1 Kit |
|---|---|---|
| Voltage | 40V | 20V |
| Cutting Swath | 13 in | 12" |
| Power Source | battery | battery |
| Line Feed System | automatic | push-button |
| Battery Capacity | 2.0Ah | 2.0Ah |
| Cutting Width | 13-Inch | 22-Inch |
| Mowing Function | 2-in-1 | not stated |
| Application | Lawn | not stated |
| Dimensions | 46.5 × 13.5 × 11 inches | 36.3 × 7.5 × 5.5 inches |
| Weight | 7.8 pounds | 17.7 pounds |
| Size | 46.5"L x 13.5"W x 11"H | 20V Trimmer + Hedge Trimmer + Turbine Blower |
| Color | Orange | Black and Orange |
| Model | LST136 | WG931 |
Frequently asked questions
Which trimmer has a wider cutting width?
The WORX WG931 20V 3-in-1 Kit offers a wider cutting width of 22 inches compared to the BLACK+DECKER model. The BLACK+DECKER 40V 13-Inch String Trimmer and Edger provides a 13-inch cutting swath. This difference affects how much area you cover in a single pass.
Does the WORX kit include multiple tools?
Yes, the WORX WG931 is a 3-in-1 kit. It includes a trimmer, a hedge trimmer, and a turbine blower. All three tools share a single 20V battery. This setup allows you to trim, hedge, and blow debris without switching batteries.
Is the BLACK+DECKER trimmer also an edger?
Yes, the BLACK+DECKER 40V 13-Inch String Trimmer and Edger is a 2-in-1 tool. It functions as both a string trimmer and an edger. This design lets you switch between trimming grass and edging sidewalks or driveways with the same device.
How heavy is the BLACK+DECKER model?
The BLACK+DECKER 40V 13-Inch String Trimmer and Edger weighs 7.8 pounds. This weight includes the tool and battery. The lighter weight may make it easier to handle for extended periods compared to heavier multi-tool kits.
What is the total weight of the WORX kit?
The WORX WG931 20V 3-in-1 Kit weighs 17.7 pounds. This total weight covers the trimmer, hedge trimmer, and blower attachments. The higher weight reflects the inclusion of three separate tools rather than a single unit.
Which system uses a higher voltage battery?
The BLACK+DECKER model uses a 40V battery system. The WORX WG931 kit operates on a 20V battery system. Higher voltage generally supports more motor power, which can help with tougher weeds and thicker grass.
What is the overall size of the BLACK+DECKER trimmer?
The BLACK+DECKER 40V 13-Inch String Trimmer and Edger measures 46.5 inches in length, 13.5 inches in width, and 11 inches in height. These dimensions help you determine if it fits your storage space. The compact design aids in maneuverability around obstacles.
Does the WORX kit come in a specific color?
The WORX WG931 20V 3-in-1 Kit is available in black and orange. This color scheme is consistent across the trimmer, hedge trimmer, and blower attachments. The black and orange design helps identify the tool quickly in your yard.

