7 Best 20V String Trimmers, Compared
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Finding the best 20V string trimmers requires looking past marketing claims and focusing on published specifications. We compared 7 models to help you choose based on data, not hype. The WORX WG931 20V 3-in-1 Kit leads as the best overall pick because it combines a trimmer, hedge trimmer, and blower into one system, despite its 17.7-pound weight. Each selection reflects the specs listed on the product pages, including cutting width, battery capacity, and tool weight. This guide helps you decide which tool matches your yard size and maintenance needs.
Quick picks
The best fit for you
- You want the most versatile maintenance bundle available WORX WG931 20V 3-in-1 Kit This kit includes a trimmer, hedge trimmer, and blower in one 20V system.
- You prefer the lightest single tool for easy handling CRAFTSMAN V20 13-Inch Cordless String Trimmer The CRAFTSMAN model weighs only 6.3 pounds, making it the lightest option here.
- You need the widest cutting width for faster trimming WORX WG931 20V 3-in-1 Kit This unit offers a 22-inch cutting width, the largest specification on the list.
- You want to trim, edge, and sweep with one tool BLACK+DECKER 10-Inch 20V Trimmer and Sweeper Combo This BLACK+DECKER combo handles trimming, edging, and sweeping with a 10-inch cutting width.
- You need a lightweight tool with automatic line feed BLACK+DECKER 20V MAX 12-Inch String Trimmer and Edger This BLACK+DECKER model weighs 6.3 pounds and features push-button line advancement.
Our 7 picks
WORX WG931 20V 3-in-1 Kit
Best for: multi-tool yard maintenance tasks
- Voltage
- 20V (what this guide is about)
- 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 kit combines a 12-inch string trimmer, a 22-inch hedge trimmer, and a 360 CFM blower. It uses a 20V battery platform with command feed line advancement. The trimmer converts to a wheeled edger. The bundle weighs 17.7 pounds. It suits users who want multiple tools in one package without buying separate units.
Pros
- Includes three tools: trimmer, hedge trimmer, and blower
- Command feed line advancement system
- Converts to a wheeled edger
- Compatible with all WORX 20V batteries
Cons
- Heavier at 17.7 pounds than single-purpose trimmers
- 12-inch cutting swath is narrower than competitors
- Requires purchasing batteries and charger separately in some options
Good fit if
- You want a trimmer, edger, and blower in one kit
- You already own WORX 20V batteries
- You need a hedge trimmer for flat tops
Skip if
- You prefer a lighter single-purpose trimmer
- You need a wider cutting swath than 12 inches
- You do not want to manage multiple tool attachments
Verdict: WORX WG931 20V 3-in-1 Kit is a versatile bundle for users who value the convenience of a trimmer, hedge trimmer, and blower in one system, provided you are comfortable with its 17.7-pound weight and 12-inch cutting width.
CRAFTSMAN V20 13-Inch Cordless String Trimmer
Best for: quick trim-to-edge conversion
- Voltage
- 20V (what this guide is about)
- Cutting Swath
- 13 in
- Power Source
- battery
- Shaft Type
- telescoping
- Line Feed System
- automatic
- Battery Capacity
- 2.0 Ah
View on Amazon: CRAFTSMAN V20 13-Inch Cordless String Trimmer Affiliate link
This CRAFTSMAN V20 string trimmer offers a 13-inch cutting swath and automatic line advance. The telescoping pole allows quick conversion to an edger. It includes a 2.0 Ah battery and charger. Two speed settings let you balance power and runtime. The lightweight 6.3-pound build makes it easy to handle for standard yard maintenance tasks.
Pros
- Automatic .065-inch line feed system
- Telescoping pole for trim-to-edge conversion
- Includes 2.0 Ah battery and charger
- Two speed settings for runtime or power
Cons
- Smaller 13-inch cutting swath
- 2.0 Ah battery capacity is modest
- Brush motor, not brushless
Good fit if
- You want quick edging conversion
- You prefer automatic line advance
- You need a lightweight tool
Skip if
- You need a wider cutting swath
- You want brushless motor efficiency
- You need extended runtime capacity
Verdict: CRAFTSMAN 13" Telescoping 20V Trimmer fits users who value easy edging conversion and automatic line feed over maximum cutting width or extended battery life.
WORX 20V 15-Inch Brushless String Trimmer
Best for: users needing trimmer and edger versatility
- Voltage
- 20V (what this guide is about)
- Cutting Swath
- 13 in, 15 in
- Power Source
- battery
- Motor Type
- brushless
- Line Feed System
- bump feed
- Battery Capacity
- 5.0Ah
View on Amazon: WORX 20V 15-Inch Brushless String Trimmer Affiliate link
This WORX 20V string trimmer delivers gas-like performance with a brushless motor. It features a 15-inch cutting swath and a quick-wind spool for fast line reloading. The lightweight design converts easily to an edger. It includes a 5.0 Ah battery for extended runtime. You get adjustable cutting widths to balance speed and endurance. This tool suits users wanting versatility and power without the maintenance of gas engines.
Pros
- Brushless motor for longer runtime and power
- Adjustable 13-inch or 15-inch cutting width
- Quick-wind spool for fast line reloading
- Converts to an edger for versatility
Cons
- Fixed 15-inch cutting width on this specific model
- Single battery included in this variation
- No variable speed control listed in specs
Good fit if
- You need a trimmer that also functions as an edger
- You prefer brushless motors for extended tool life
- You want to adjust cutting width for different tasks
Skip if
- You require a variable speed trigger for precision work
- You need a wider cutting swath than 15 inches
- You prefer a tool-only purchase without batteries
Verdict: Worx 20V 15" String Trimmer fits users who need a lightweight, versatile tool that switches between trimming and edging. It is ideal for those who value quick line reloading and adjustable cutting widths over variable speed control.
BLACK+DECKER 20V MAX 12-Inch String Trimmer and Edger
Best for: Push-button line advancement users
- Voltage
- 20V (what this guide is about)
- Cutting Swath
- 12 in
- Power Source
- battery
- Line Feed System
- push-button
- Cutting Width
- 12-Inch
- Included Battery
- Battery and Charger Included
View on Amazon: BLACK+DECKER 20V MAX 12-Inch String Trimmer and Edger Affiliate link
This BLACK+DECKER trimmer offers a 12-inch cutting width and 20V battery power. It features an EASYFEED push-button line advancement system, eliminating the need to bump the head. A 2-speed control lets you choose between higher power or extended runtime. The adjustable handle and soft grip improve comfort. It includes one battery and charger. This model suits users who prefer easy line management over manual bump-feed.
Pros
- Push-button EASYFEED line advancement system
- 2-speed control for power or runtime
- 12-inch cutting width
- Adjustable handle with soft grip
Cons
- 12-inch cutting width is narrower than some competitors
- Only includes one battery in the kit
- No variable speed trigger mentioned in specs
Good fit if
- You want to avoid bumping the trimmer head to advance line
- You need adjustable speed settings for different tasks
- You already own other 20V MAX tools
Skip if
- You need a wider cutting swath for large areas
- You require multiple batteries included for extended work
- You prefer a manual bump-feed line system
Verdict: BLACK+DECKER 20V 12" String Trimmer is a practical option for those who value the convenience of push-button line advancement. It fits users with small to medium yards who want easy line management and adjustable power settings.
BLACK+DECKER 10-Inch 20V Trimmer and Sweeper Combo
Best for: Users wanting trim, edge, and sweep in one kit
- Voltage
- 20V (what this guide is about)
- Cutting Swath
- 10 in
- Power Source
- battery
- Line Feed System
- automatic
- Battery Capacity
- 1.5Ah
- Cutting Width
- 10-Inch
View on Amazon: BLACK+DECKER 10-Inch 20V Trimmer and Sweeper Combo Affiliate link
This BLACK+DECKER kit combines a 10-inch string trimmer, edger, and sweeper into one lightweight system. It includes two 1.5Ah batteries and a charger. The automatic line feed system keeps trimmer line stocked without interruption. You can switch to a wheeled edger for precise borders. The main trimmer weighs 4.5 lbs and the sweeper weighs 3.7 lbs. This bundle suits users who want multiple tools in one package.
Pros
- Includes two 1.5Ah batteries and a charger
- Automatic line feed system for continuous trimming
- Converts to a wheeled edger for borders
- Lightweight trimmer head at 4.5 lbs
- Quiet operation for neighborhood use
Cons
- Smaller 10-inch cutting swath compared to competitors
- Lower 1.5Ah battery capacity limits runtime
- Heavier total kit weight at 10.5 lbs
Good fit if
- You want a trimmer, edger, and sweeper in one kit
- You need automatic line feed for convenience
- You prefer lightweight tools for extended use
Skip if
- You need a wider 12-inch or larger cutting swath
- You require higher capacity batteries for long jobs
- You only need a standalone string trimmer
Verdict: BLACK+DECKER 10-Inch 3-in-1 Cordless Kit is a practical bundle for users who value versatility and automatic line feed over cutting width. It fits those who want to trim, edge, and sweep with a single lightweight system.
Worx 20V 13-Inch Cordless Trimmer and Edger
Best for: trimming, edging, and small lawn maintenance
- Voltage
- 20V (what this guide is about)
- Cutting Swath
- 13 in
- Power Source
- battery
- Motor Type
- brushless
- Shaft Type
- telescopic
- Line Feed System
- push-button
View on Amazon: Worx 20V 13-Inch Cordless Trimmer and Edger Affiliate link
This Worx 20V cordless trimmer features a 13-inch cutting swath and a brushless motor for consistent power. It includes a 4.0Ah battery and uses a push-button line feed system. The 90-degree pivoting head allows you to switch between trimming, edging, and mini-mowing. You get a telescopic shaft and adjustable handle for comfort. This tool is designed for users who want versatility in a single unit.
Pros
- Brushless motor delivers high torque without slowing down in thick weeds
- Push-button line feed provides instant fresh line without stopping
- 90-degree pivoting head adapts to slopes and uneven terrain
- Dual support wheels guide the tool along sidewalks and edges
Cons
- Heavier build at 6.62 pounds compared to standard trimmers
- Mini-mower function limits cutting width to 13 inches
- Single battery included in this configuration
Good fit if
- You need a single tool for trimming, edging, and light mowing
- You have slopes or uneven terrain that require a pivoting head
- You prefer electronic line feed over bump-feed systems
Skip if
- You require a cutting swath wider than 13 inches
- You want a lightweight tool under 5 pounds
- You need a dedicated mower with a larger deck
Verdict: Worx 20V 13-Inch 3-in-1 Trimmer suits users who want to trim, edge, and mini-mow with one tool. It fits small yards with slopes where the pivoting head and wheels provide control.
Westinghouse 20V 12-Inch String Trimmer and Edger
Best for: trimming and edging in tight spaces
- Voltage
- 20V (what this guide is about)
- Cutting Swath
- 12 in
- Power Source
- battery
- Shaft Type
- adjustable, 8 in adjustment
- Line Feed System
- auto line feed
- Battery Capacity
- 2.0Ah
View on Amazon: Westinghouse 20V 12-Inch String Trimmer and Edger Affiliate link
This Westinghouse tool combines a string trimmer and edger in one 20V unit. It features a 12-inch cutting path and auto line feed that advances line with the trigger. The shaft adjusts 8 inches, and the unit weighs under 6 pounds. It includes a 2.0Ah battery and charger. This setup suits users who want to switch between trimming and edging without carrying multiple tools.
Pros
- 2-in-1 design converts from trimmer to edger
- Auto line feed advances line with the trigger
- Adjustable shaft provides 8 inches of length change
- Lightweight build weighs under 6 pounds
Cons
- 12-inch cutting swath is narrower than many competitors
- Included 2.0Ah battery offers limited runtime
- No variable speed control listed in specs
Good fit if
- You need a single tool for both trimming and edging
- You prefer auto line feed to avoid bumping the head
- You want a lightweight unit for extended use
Skip if
- You require a wider cutting path for large areas
- You need a higher capacity battery for long jobs
- You prefer a fixed shaft for maximum stability
Verdict: Westinghouse 20V 12" String Trimmer and Edger fits users who value versatility and lightweight handling over raw cutting width. It is a practical option for detailed edging and trimming tasks where maneuverability matters more than speed.
Specifications side by side
| Spec | WORX WG931 20V 3-in-1 Kit | CRAFTSMAN V20 13-Inch Cordless String Trimmer | WORX 20V 15-Inch Brushless String Trimmer | BLACK+DECKER 20V MAX 12-Inch String Trimmer and Edger | BLACK+DECKER 10-Inch 20V Trimmer and Sweeper Combo | Worx 20V 13-Inch Cordless Trimmer and Edger | Westinghouse 20V 12-Inch String Trimmer and Edger |
|---|---|---|---|---|---|---|---|
| Voltage | 20V | 20V | 20V | 20V | 20V | 20V | 20V |
| Cutting Swath | 12" | 13 in | 13 in, 15 in | 12 in | 10 in | 13 in | 12 in |
| Power Source | battery | battery | battery | battery | battery | battery | battery |
| Motor Type | not stated | not stated | brushless | not stated | not stated | brushless | not stated |
| Shaft Type | not stated | telescoping | not stated | not stated | not stated | telescopic | adjustable, 8 in adjustment |
| Line Feed System | push-button | automatic | bump feed | push-button | automatic | push-button | auto line feed |
| Battery Capacity | 2.0Ah | 2.0 Ah | 5.0Ah | not stated | 1.5Ah | 4.0Ah | 2.0Ah |
| Cutting Width | 22-Inch | not stated | 15-Inch | 12-Inch | 10-Inch | 13-Inch | 12-Inch |
| Mowing Function | not stated | not stated | not stated | not stated | not stated | 3-in-1 | 2-in-1 |
| Application | not stated | not stated | not stated | not stated | not stated | Lawn | not stated |
| Included Battery | not stated | not stated | not stated | Battery and Charger Included | not stated | not stated | not stated |
| Dimensions | 36.3 × 7.5 × 5.5 inches | 44 × 8.75 × 5.25 inches | 63.9 × 40.3 × 5 inches | 41.3 × 9.2 × 5 inches | 42 × 10.4 × 7.25 inches | 43.1 × 35.6 × 5 inches | 51.6 × 12.8 × 5 inches |
| Weight | 17.7 pounds | 6.3 pounds | 8.16 pounds | 6.3 pounds | 10.5 pounds | 6.62 pounds | 6 pounds |
| Size | 20V Trimmer + Hedge Trimmer + Turbine Blower | 13 inches | 15" | One Size | One Size | No Size | not stated |
| Color | Black and Orange | Red | Black and Orange | Black | Orange, Black | Black and Orange | Black |
| Model | WG931 | CMCST900D1 | WG176 | LSTE523 | LCC222 | WG173 | WST 20V |
How to choose the right one
-
Check cutting width needs
Cutting width determines how many passes you need to cover your yard. Wider decks like the 22-inch WORX WG931 cover more ground per pass, reducing total time. Narrower models, such as the 10-inch BLACK+DECKER kit, offer better maneuverability in tight spaces or around obstacles. Match the width to your lawn size and layout. If you have open areas, prioritize a wider deck. For detailed work near fences, a smaller width provides better control and precision during trimming tasks.
-
Evaluate tool weight
Weight affects handling comfort during extended use. The WORX WG931 Kit weighs 17.7 pounds, which may cause fatigue for some users despite its versatility. Lighter options, like the 6.3-pound CRAFTSMAN or BLACK+DECKER models, reduce strain on your arms and back. Consider your physical strength and how long you plan to operate the tool. A lighter trimmer allows for easier positioning and quicker adjustments. Heavier kits often include more accessories, so balance the added convenience against the physical effort required.
-
Consider multi-function kits
Some models offer multiple functions in one system. The WORX WG931 includes a trimmer, hedge trimmer, and blower, while the BLACK+DECKER LCC222 combines trimming, edging, and sweeping. These kits save space and simplify storage by using a single battery platform. Choose a multi-function kit if you value versatility and want to handle various yard tasks without buying separate tools. Ensure the additional functions meet your specific needs, as they may add weight or complexity to the primary trimming operation.
-
Assess battery capacity
Battery capacity, measured in amp-hours (Ah), influences runtime. The WORX WG176 includes a 5.0 Ah battery, while the WG173 comes with a 4.0 Ah unit. Higher capacity batteries provide longer operation times before needing a recharge. If you have a larger yard or prefer uninterrupted work sessions, look for higher Ah ratings. Check if the battery is included in the kit or sold separately. Consistent voltage ensures reliable power delivery, but capacity determines how long that power lasts during your maintenance tasks.
-
Review included accessories
Kits often include batteries and chargers, which affects initial setup. The BLACK+DECKER LSTE523 includes both battery and charger, ready for immediate use. Other models may require separate purchases. Verify what is in the box to avoid hidden costs or delays. A complete kit offers convenience and ensures compatibility between components. If you already own compatible batteries, a bare tool might be more economical. Always check the specifications to confirm included accessories and ensure they meet your operational requirements from day one.
Frequently asked questions
Which 20V string trimmer is the lightest?
The Westinghouse 20V 12-Inch String Trimmer and Edger is the lightest option at 6 pounds. This makes it ideal for users who prioritize maneuverability in tight spaces. The CRAFTSMAN V20 model is a close second at 6.3 pounds. Both tools offer easy handling for detailed trimming tasks without causing arm fatigue during extended use.
What is the widest cutting deck available?
The WORX WG931 20V 3-in-1 Kit features the widest cutting width at 22 inches. This allows you to cover more ground per pass, reducing total mowing time. Most other models in this list offer narrower decks, such as the 15-inch WORX WG176. A wider deck is best for larger, open yards where efficiency matters.
Are there any 20V trimmers that also function as edgers?
Several models include edging capabilities. The WORX 20V 15-Inch Brushless String Trimmer switches between trimming and edging for versatile lawn maintenance. The BLACK+DECKER 20V MAX 12-Inch model also functions as an edger. The Westinghouse 20V 12-Inch unit is explicitly marketed as a 2-in-1 tool. These options suit users who want precise edge definition without switching tools.
Which kit includes multiple tools for yard work?
The WORX WG931 20V 3-in-1 Kit includes a trimmer, hedge trimmer, and blower. This bundle is best for users who value convenience and versatility in one system. The BLACK+DECKER 10-Inch 20V Trimmer and Sweeper Combo is another multi-tool option, offering trim, edge, and sweep functions. These kits reduce the need for separate devices for different yard tasks.
Do any models come with batteries included?
The BLACK+DECKER 20V MAX 12-Inch String Trimmer and Edger includes both a battery and charger. This provides immediate usability out of the box. Other models, like the WORX 20V 15-Inch Brushless String Trimmer, list a 5.0 Ah battery capacity but do not explicitly state inclusion in the specs. Check the product details to confirm if power sources are bundled.
What is the longest overall length for these trimmers?
The WORX 20V 15-Inch Brushless String Trimmer has the longest overall length at 63.9 inches. This extended reach helps reduce bending during use. In contrast, the WORX WG931 20V 3-in-1 Kit measures 36.3 inches in length. Longer models may offer better leverage, while shorter ones provide easier storage and handling in confined areas.
Which trimmer is best for small yards with slopes?
The Worx 20V 13-Inch Cordless Trimmer and Edger is designed for small yards with slopes. It features a pivoting head and wheels for better control on uneven terrain. This model weighs 6.62 pounds, offering manageable handling. Its 3-in-1 functionality allows you to trim, edge, and mini-mow, making it a practical choice for detailed lawn maintenance on challenging ground.