21V Electric Cordless Weed Wacker,Battery Powered Weed Eater String Trimmer
4.6Editor score
9500 RPM motor speed
Includes two batteries
Automatic line feed
10 Best Lightweight Battery Powered String Trimmer (November 2026) Expert Guide
Finding a lightweight battery powered string trimmer can transform your yard work from a chore into a manageable task. These tools offer the convenience of cordless operation without the heavy weight of traditional gas models.
We have evaluated ten top-rated cordless trimmers based on motor power, battery life, and ergonomic design. Our comparison focuses on ease of use, cutting efficiency, and overall value for homeowners.
Each selection below highlights key features and pros to help you choose the right tool for your needs. Please note that product prices and availability may change over time.
Top 3 Picks for Best Lightweight Battery Powered String Trimmer
WORX 20V 12" 2-in-1 Cordless String Trimmer & Electric Lawn Edger, WG163
4.3Editor score
2-in-1 trimmer and edger
Instant line feed system
90-degree tilting head
EGO Power+ 15" Cordless Weed Trimmer with Battery and Charger – ST1511T
4.4Editor score
15-inch cutting swath
PowerLoad technology
Brushless motor system
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Top 10 Best Lightweight Battery Powered String Trimmer in 2026 Compared
This table provides a side-by-side comparison of the ten best lightweight battery powered string trimmer models available today. Review the specs to find the perfect match for your lawn.
ProductsSpecificationsEditor scorePrice
Editor's Choice
WORX 20V WG163
12 inch cutting diameter
5.5 lbs weight
7600 rpm speed
Includes 2 batteries
4.3Editor score
Editor's Choice
BLACK+DECKER LST300
12 inch cutting swath
2.0 Ah battery
6200 rpm speed
Automatic feed spool
4.4Editor score
Best Budget
21V Electric Cordless
12 inch cutting swath
5.27 lbs weight
9500 rpm speed
Includes 2 batteries
4.6Editor score
EGO Power+ ST1511T
15 inch cutting swath
Up to 45 min runtime
Brushless motor
Telescopic shaft
4.4Editor score
Electric Weed Wacker
12 inch cutting width
5.27 lbs weight
9000 rpm speed
Dual batteries
4.4Editor score
Weed Wacker Eater
12 inch cutting width
5.27 lbs weight
9000 rpm speed
Detachable shaft
4.4Editor score
20V Cordless Weed Wacker
3.5 lbs weight
12 inch cutting swath
40-60 min runtime
Auto feed system
4.1Editor score
Greenworks 40V
12 inch cutting path
Dual-line cutting
Variable speed control
Lightweight design
4.3Editor score
Battery Powered Weed Wacker
5.27 lbs weight
12 inch cutting width
9000 rpm speed
Quiet operation
4.4Editor score
CRAFTSMAN V20
13 inch cutting swath
Telescoping pole
Two speed settings
VERSATRACK compatible
4.4Editor score
1. WORX 20V WG163 – Best Overall Lightweight Battery Powered String Trimmer
WORX 20V 12" 2-in-1 Cordless String Trimmer & Electric Lawn Edger, WG163
20V Power Share system
12 inch diameter cut
5.5 lbs weight
Includes 2 batteries
The WORX 20V WG163 stands out as a top contender in the lightweight battery powered string trimmer market. With a 4.3 rating, it offers a reliable mix of power and maneuverability for standard lawn tasks.
Pros
- Versatile 2-in-1 function
- Lightweight easy handling
- Fast line feed system
- Compatible battery ecosystem
Cons
- Short battery runtime alone
- Slightly heavier than rivals
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Its defining feature is the 2-in-1 design that converts from a trimmer to an edger in seconds. The 12 inch cutting diameter handles most grasses efficiently, while the rubberized wheels guide straight edging lines.
Users note the Instant Line Feed system is a major convenience, eliminating the need for manual bumping. While the 7600 RPM speed is adequate, the tool is best suited for light to medium yard maintenance.
This trimmer is ideal for homeowners who want one tool for multiple jobs without heavy lifting. The inclusion of two batteries ensures you can swap and keep working without waiting for recharges.
Power Share Compatibility
The WORX Power Share system means the 20V batteries work across many other tools, reducing overall costs for your garage.
Ergonomic Design
With a 90 degree tilting head, you can reach difficult spots on slopes or under garden beds without awkward bending.
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2. BLACK+DECKER LST300 – Best Value Lightweight Battery Powered String Trimmer
BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1, Cordless Weed Wacker with Auto Spool Feed, Battery and Charger Included, 12 Inch Steel Deck, Reduced Vibration (LST300)
2.0 Ah battery included
6200 rpm power
2-in-1 trim or edge
Quiet operation system
The BLACK+DECKER LST300 is a solid choice for those seeking a lightweight battery powered string trimmer at a budget-friendly price. It delivers reliable performance for regular lawn care with minimal effort required.
Pros
- Affordable price point
- Reduced vibration design
- Auto feed spool system
- Simple tool-free assembly
Cons
- Lower rpm than rivals
- Smaller battery capacity
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Its POWERDRIVE Transmission ensures that available power reaches the cutting string effectively. The Automatic Feed Spool allows for smooth, uninterrupted trimming, which is a significant advantage for extended sessions.
While it may not have the highest speed, its design prioritizes user comfort with reduced vibration. This makes it a good fit for small to medium yards where precision is more important than raw power.
If you need a no-fuss tool that gets the job done quickly and quietly, this model is a strong candidate. The included battery and charger mean you can start using it right out of the box.
Auto Feed Convenience
The Automatic Feed Spool technology keeps the line advancing as needed, so you do not have to stop to bump the head.
Adjustable Comfort
An adjustable handle and height position allow you to customize the tool to your stature for better control and less strain.
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3. 21V Electric Cordless – Best Performance Budget Lightweight Battery Powered String Trimmer
21V Electric Cordless Weed Wacker,Battery Powered Weed Eater String Trimmer
9500 rpm motor
Two 2000mAh batteries
5.27 lbs weight
10 head tilt
This 21V Electric Cordless Weed Wacker is a standout for anyone looking for a lightweight battery powered string trimmer that punches above its weight. It boasts an impressive 9500 RPM motor for aggressive cutting.
Pros
- Very high rpm speed
- Lightweight ergonomic frame
- Includes two batteries
- Auto line feed included
Cons
- Shorter single runtime
- Less known brand name
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At just 5.27 lbs, it is easy to maneuver around tight corners or over uneven terrain. The two included batteries provide enough runtime to finish most average-sized lawns without interruption.
Automatic Line Feed ensures you spend more time cutting and less time refilling. It also features a 2-in-1 design that rotates to an edger, adding versatility without extra tools.
For budget-conscious shoppers who do not want to sacrifice speed or weight, this trimmer is an excellent option. It is simple to use and handles dense grass effectively with its powerful motor.
Rapid Cutting Speed
The 9500 RPM motor spins the string faster than many competitors, allowing it to slice through thicker grass with ease.
Extended Usability
With two batteries and a fast charger, you can swap batteries to keep working continuously, making it suitable for larger yards.
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4. EGO Power+ ST1511T – Best Pro Lightweight Battery Powered String Trimmer
EGO Power+ 15" Cordless Weed Trimmer with Battery and Charger – ST1511T
15 inch cutting swath
PowerLoad technology
Brushless motor drive
45 min max runtime
The EGO Power+ 15" Cordless Weed Trimmer is a premium lightweight battery powered string trimmer designed for serious lawn care. Its 15 inch cutting swath covers significantly more ground per pass than standard 12 inch models.
Pros
- Extra wide cutting path
- High-efficiency brushless motor
- PowerLoad line reload
- Telescopic aluminum shaft
Cons
- Higher price point
- Heavier than budget models
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Equipped with a high-efficiency brushless motor, this trimmer delivers power while keeping vibration low. The telescopic aluminum shaft allows for easy height adjustments to fit different users comfortably.
PowerLoad technology makes rewinding the line quick and simple with a button push, avoiding the hassle of manual winding. The variable speed settings allow you to match the tool to the task at hand.
If you want a trimmer that performs like a gas unit without the noise or fumes, this is the model to choose. It includes a 2.5Ah battery and a fast charger to keep you productive.
Wide Coverage Area
A 15 inch swath reduces the number of passes needed to clear a large yard, saving valuable time during maintenance sessions.
Professional Warranty
EGO backs this tool with a 5-year tool warranty and a 3-year battery warranty, reflecting high confidence in its build quality.
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5. Electric Weed Wacker Eater – Best Balanced Lightweight Battery Powered String Trimmer
Electric Weed Wacker Eater Cordless Battery Powered String Trimmer Whacker
9000 rpm speed
12 inch cutting width
5.27 lbs weight
Dual battery system
This Electric Weed Wacker Eater offers a compelling mix of performance and ease of use for a lightweight battery powered string trimmer. It features a 9000 RPM motor that handles most garden weeds with confidence.
Pros
- High speed motor
- Includes safety goggles
- Tool-free setup process
- Dual battery runtime
Cons
- Short battery life
- Plastic construction feel
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Safety is a priority with this model, as it comes with impact-resistant goggles to shield your eyes from debris. The tool-free assembly means you can start using it in minutes without extra tools.
The 12 inch cutting swath is standard but effective for small to medium yards. While the battery life is on the shorter side, the dual battery inclusion helps mitigate downtime for most users.
Ideal for beginners or those with limited storage, this trimmer is compact and easy to handle. The low noise design makes it neighbor-friendly for use at various times of the day.
Safety First Design
The included safety goggles and reinforced guard protect you from flying rocks and debris while you trim around hard surfaces.
Low Noise Operation
Acoustic-dampening technology reduces noise levels, allowing you to maintain your yard early in the morning without disturbing neighbors.
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6. Weed Wacker Eater Electric – Best Compact Lightweight Battery Powered String Trimmer
Weed Wacker Eater Electric String Trimmer Battery Powered Lawn Trimmer
9000 rpm speed
12 inch cutting width
5.27 lbs weight
Split shaft design
The Weed Wacker Eater Electric is a durable option for those needing a lightweight battery powered string trimmer for daily chores. It features rugged construction designed to withstand regular outdoor use and abuse.
Pros
- Efficient 12 inch width
- Lightweight balanced build
- Auto & manual feed
- Detachable shaft storage
Cons
- Basic plastic body
- Limited runtime per charge
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Its 12 inch cutting width allows for efficient grass clearing without taking up too much space. The split shaft design makes it easy to store in small sheds or garages where space is tight.
With both automatic and manual line feed options, this tool offers flexibility based on user preference. It is particularly useful for maintaining garden landscapes and creating clean borders along walkways.
For homeowners with limited storage, this compact trimmer is a great solution. It delivers consistent performance and is light enough for seniors or anyone wanting to reduce physical strain.
Eco-Friendly Operation
Running on battery power, this trimmer produces no fumes or oil leaks, making it a cleaner and more environmentally friendly choice.
Compact Storage
The detachable shaft allows you to break the tool down into smaller parts, saving valuable floor space in your storage area.
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7. 20V Cordless Weed Wacker – Best Lightweight Lightweight Battery Powered String Trimmer
20V Cordless Weed Wacker, Battery Powered Weed Eater with 2 Batteries
3.5 lbs weight
Two 2.0Ah batteries
12 inch cutting swath
Auto feed system
Weighing only 3.5 lbs, the 20V Cordless Weed Wacker is arguably the lightest battery powered string trimmer in this comparison. It is specifically designed to reduce fatigue for seniors and women.
Pros
- Ultra-lightweight 3.5 lbs
- Two batteries included
- 180 degree pivoting head
- No gas or oil needed
Cons
- Less power for tough weeds
- Lower average rating
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Despite its light weight, it handles standard grass and weed trimming with its 12 inch cutting swath. The 20V system provides steady power for daily maintenance around patios and sidewalks.
The 180 degree pivoting head is a standout feature, allowing you to trim at unique angles under fences or around tree roots. This flexibility makes it great for detailed cleanup tasks.
If your main priority is handling a tool that feels nearly weightless, this is an excellent choice. It includes two batteries to ensure you can finish your work in one go.
Ultra-Light Design
At 3.5 lbs, this trimmer minimizes arm and back strain, making it accessible for users who need a lighter tool.
Pivoting Head Flexibility
The 180 degree pivoting head lets you navigate complex landscaping features and tight corners with ease.
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8. Greenworks 40V – Best Reliable Lightweight Battery Powered String Trimmer
Greenworks 40V 12 in Cordless String Trimmer, 2.0 Ah Battery and Charger
40V battery system
12 inch dual line
Variable speed trigger
Ergonomic balance
The Greenworks 40V 12 in Cordless String Trimmer brings higher voltage power to a lightweight form factor. Its 40V system offers increased torque for tackling tougher weeds and thicker grass.
Pros
- 40V power system
- Dual line cutting
- Variable speed control
- 3-year warranty
Cons
- 40V batteries heavier
- Short battery life
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The dual-line cutting system ensures clean, consistent results around lawns and sidewalks. Variable speed control allows you to adjust the power output based on the density of the grass.
Users appreciate the well-balanced, ergonomic design that reduces fatigue during use. The 3-year tool and battery warranty adds peace of mind for long-term ownership.
This trimmer is a great fit for those who need more power than standard 20V models provide. Its reliable performance makes it a solid option for regular yard maintenance.
Variable Speed Control
A variable speed trigger gives you precise control over the cutting speed, allowing for gentle edging or powerful trimming.
Long Warranty Support
Backed by a 3-year warranty on both tool and battery, this trimmer offers strong assurance for your investment.
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9. Battery Powered Weed Wacker – Best Senior-Friendly Lightweight Battery Powered String Trimmer
Battery Powered Weed Wacker Cordless Lightweight for Seniors & Small Lawns
9000 rpm motor
12 inch width
5.27 lbs weight
Split shaft design
Designed with seniors in mind, this battery powered weed wacker combines lightweight handling with strong 9000 RPM cutting performance. It is an ideal tool for routine lawn maintenance without heavy lifting.
Pros
- High rpm cutting
- Ergonomic design
- Dual battery included
- Quiet operation
Cons
- Short battery life
- Basic build materials
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The ergonomic handle and balanced design reduce strain on your back and arms during extended use. It features a dual battery system to extend runtime for larger yard areas.
Quiet operation ensures you can trim early in the morning without disturbing the neighborhood. The split shaft design makes storage convenient in small homes or apartments.
If you need a user-friendly tool that is easy to maneuver and store, this is a top choice. It delivers effective performance while prioritizing user comfort and safety.
Senior-Friendly Features
The ergonomic handles and balanced design are specifically optimized to reduce fatigue for older users.
Easy Maintenance
Tool-free assembly and simple line replacement make this trimmer easy to maintain without technical skills.
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10. CRAFTSMAN V20 – Best Versatile Lightweight Battery Powered String Trimmer
CRAFTSMAN V20 Weed Wacker Cordless String Trimmer and Edger, Weed Eater Includes 2.0 Ah Battery and Charger, Lightweight, Extended Runtime, 2 Speed (CMCST900D1)
13 inch cutting swath
Automatic line advance
Two speed settings
Versatrack compatible
The CRAFTSMAN V20 Weed Wacker is a versatile lightweight battery powered string trimmer offering a 13 inch cutting swath for faster coverage. It includes two speed settings to match power to your needs.
Pros
- 13 inch cutting swath
- 2 speed settings
- Versatrack wall mount
- Quick conversion
Cons
- Slightly heavier than 20V rivals
- Short battery per charge
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Its ergonomic telescoping pole allows quick conversion between trimmer and edger modes. This flexibility helps you create clean borders along driveways and walkways with minimal effort.
Compatible with the CRAFTSMAN VERSATRACK system, this tool can be hung on the wall for organized storage. The automatic line advance system ensures smooth operation without bumping.
Ideal for homeowners who want a trimmer that adapts to different tasks, this model is a strong contender. Its balanced design and extended runtime options make it suitable for many yard sizes.
Versatrack Storage
The built-in hook allows you to hang the tool on CRAFTSMAN VERSATRACK organizers, keeping your workspace tidy and organized.
Two Speed Options
Choose between power or runtime with two speed settings, giving you flexibility for tough weeds or routine grass trimming.
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Buying Guide – How to Choose the Best Lightweight Battery Powered String Trimmer
Choosing the right lightweight battery powered string trimmer requires balancing weight, power, and battery life. This guide covers the key factors to help you find the perfect tool.
Weight and Ergonomics
The weight of a string trimmer is critical for preventing fatigue. Look for models weighing between 3 to 6 pounds. Ergonomic handles and adjustable shafts improve comfort during extended use.
Prioritize lightweight designs if you have back issues or are a beginner. Balanced trimmers reduce strain on your arms and wrists significantly.
Battery Voltage and Capacity
Voltage determines the power available to cut through tough grass. 20V to 40V batteries are common for lightweight trimmers. Higher capacity amp-hours (Ah) provide longer run times.
Aim for at least 2.0Ah per battery. Many models include two batteries to allow swapping and continuous work.
Cutting Swath Width
A wider cutting swath allows you to cover more ground quickly. Most lightweight trimmers offer 12 to 13 inches. Some premium models reach 15 inches.
Choose 12 to 13 inches for standard lawns. Use 15 inches for larger yards to save time.
Line Feed System
Automatic feed systems release line as needed without manual bumping. This improves efficiency and saves time during operation. Some models offer both auto and manual options.
Auto feed is preferred for ease of use. It reduces interruptions and keeps you focused on the task at hand.
Versatility and Attachments
Some trimmers convert into edgers with a simple rotation of the head. This 2-in-1 functionality saves the need for separate tools. Check if attachments are included or sold separately.
A trimmer-edger combo is ideal for small yards. It maximizes utility and storage efficiency.
Noise Levels
Battery trimmers are inherently quieter than gas models. This makes them neighbor-friendly for early morning use. Look for acoustic-dampening features for even lower noise.
Noise is less of an issue with electric tools. Ensure it meets local regulations if you have strict quiet hours.
Durability and Warranty
Check the construction materials for durability. Steel shafts last longer than aluminum. Warranty terms vary by brand from 2 to 5 years.
Longer warranties indicate manufacturer confidence. Opt for brands with proven track records for customer support.
Price and Value
Prices range from budget options to premium tools. Consider the total cost including batteries and chargers. Higher-priced models often offer longer warranties and better build.
Balance your budget with your needs. Budget models work for small lawns, while premium ones suit larger properties.
How to Use and Care for Your Lightweight Battery Powered String Trimmer
Start by assembling the trimmer according to the manual. Ensure the battery is charged and inserted correctly. Adjust the handle to your height for comfortable operation.
Wear safety glasses and long pants to protect from debris. Hold the trimmer with both hands and keep the cutting head close to the ground. Move slowly to ensure clean cuts.
Clean the trimmer after each use to remove grass clippings. Store batteries in a cool dry place. Replace the line when it becomes worn or short.
Frequently Asked Questions
How long does a battery powered string trimmer last?
A battery powered string trimmer typically lasts between 20 to 60 minutes on a single charge depending on usage. Models with two batteries offer extended runtime for larger lawns. Heavy weeds may drain the battery faster.
Are lightweight trimmers powerful enough for thick weeds?
Most lightweight trimmers handle standard grass and light weeds well. For thick or woody weeds, higher voltage models like 40V are recommended. Always check the motor speed and battery capacity.
Can I use these trimmers on steep slopes?
Yes, many lightweight trimmers have tilting heads or ergonomic designs suitable for slopes. However, exercise caution to maintain balance. Always wear sturdy shoes for better traction.
How do I know which line size to buy?
Check the trimmer manual for the recommended line diameter. Most models use 0.065 inches or similar. Do not use thicker lines than specified as it may strain the motor.
What is the difference between 20V and 40V trimmers?
20V trimmers are lighter and ideal for small yards. 40V models provide more power for tougher tasks. Choose based on your lawn size and the type of vegetation.
How do I store my cordless trimmer during winter?
Store the trimmer in a dry place. Remove the battery and keep it indoors at room temperature. Do not leave it outside in extreme cold or heat.
Final Thoughts on Choosing the Best Lightweight Battery Powered String Trimmer
The WORX 20V and the 21V Electric Cordless are top picks for combining weight and power effectively. They balance performance with ease of use for the average homeowner.
For those seeking premium power, the EGO Power+ 15 inch offers professional-grade features. Budget buyers should consider the BLACK+DECKER LST300 for reliable value.
Remember to check current prices and availability before purchasing. Regular sales may offer better deals for these essential lawn care tools.