When searching for a string trimmer cordless, the key considerations include power, battery life, ease of use, and versatility. The BLACK+DECKER 20V MAX String Trimmer and Edger stands out as the best overall for its balanced performance and affordability. The EGO POWER+ 15-Inch Battery-Powered Trimmer offers premium power, ideal for larger yards, while the WORX Cordless String Trimmer & Lawn Edger provides great value with dual functionality. However, choosing the right model involves tradeoffs between battery life, weight, and cutting width. Continue reading for the full breakdown of these options to find the perfect fit for your needs.
Key Takeaways
- Battery compatibility and runtime are critical, especially for larger yards.
- Models with multi-tool systems offer extra versatility but often come at a higher price.
- Lightweight trimmers are better for extended use, but may sacrifice some power.
- Higher voltage batteries generally deliver more power, suitable for tougher weeds.
- Price often correlates with durability and advanced features; budget options can suffice for small yards.
More Details on Our Top Picks
BLACK+DECKER 20V MAX String Trimmer and Edger 2-in-1, Cordless with Battery and Charger
This model stands out for its straightforward 2-in-1 design, offering quick conversion between trimming and edging, which makes it ideal for homeowners who want simplicity and reliable performance. Compared with the EGO Power+ Edger & Power Head Kit, this trimmer is more compact and easier to handle, though it sacrifices some cutting capacity and runtime. Its automatic line feed and lightweight build enhance user comfort, especially for smaller yards or casual maintenance. The limited 12-inch cutting width and battery life mean it’s less suited for larger properties or heavy-duty tasks, but its included battery and charger make it a ready-to-go option for occasional use.
Pros:- Versatile 2-in-1 trimming and edging functions
- Automatic line feeding reduces bumping
- Lightweight and adjustable for comfortable use
Cons:- Limited to a 12-inch cutting swath, which slows larger jobs
- Battery life may not last through extensive yard work
Best for: Small to medium-sized yard owners who prioritize versatility and lightweight handling.
Not ideal for: Property owners with large lawns or demanding trimming needs, due to its narrower cut and shorter battery life.
- Power:20V MAX
- RPM:6200
- Cutting Width:12 inches
- Battery:2.0 Ah lithium-ion
- Charging Base:Wall mountable
- Warranty:2 years
Bottom line: This trimmer suits homeowners seeking a compact, easy-to-use tool for small yards and light trimming tasks.
20V Cordless String Trimmer with 2 Batteries and Fast Charger, 3-in-1 Lawn Tool with Auto Line Feed, 12-inch Cut
This pick excels for those with sizable yards, thanks to its 3-in-1 design that combines trimming, edging, and mowing capabilities, surpassing the simpler functionality of the BLACK+DECKER. The adjustable, telescopic shaft and dual batteries with fast charging make it adaptable and capable of extended use, even on big properties. However, the plastic construction might feel less durable over time, and the need for two batteries could be a drawback for casual users. Its 8000 RPM motor and auto line feed system deliver smooth operation, making it a solid choice for regular lawn maintenance, especially when versatility is a priority.
Pros:- Versatile 3-in-1 functionality including mowing
- Adjustable and telescopic for comfortable use
- Fast-charging batteries extend operational time
Cons:- Plastic parts may wear faster with heavy use
- Requires two batteries for continuous operation
Best for: Homeowners with large yards who want a multi-purpose tool with extended runtime.
Not ideal for: Users with small gardens or those who prefer minimal equipment, as it’s bulkier and more complex than simpler trimmers.
- Battery:2 x 2.0Ah
- Charger:Fast charger
- Voltage:20V
- Cutting Diameter:12 inches
- Motor Speed:8000 RPM
- Adjustable Shaft:38 to 49 inches
- Line Feed System:Auto
Bottom line: Ideal for large properties needing a versatile, battery-powered tool that can handle various lawn tasks efficiently.
WORX Cordless String Trimmer & Lawn Edger, 20V, 12-inch, with 2 Batteries & Charger
This model is perfect for those who want a lightweight and nimble tool, especially with its just 5.5 lbs weight and pivoting head that makes detailed trimming and edging easier. Compared to the EGO 15-Inch Trimmer, it offers similar 12-inch capacity but with easier handling, making it ideal for small to medium yards where maneuverability is key. Its two batteries and quick line feed system help keep productivity high, though the plastic components might wear faster under heavy use. This tool is excellent for users who value control and ease over sheer power or capacity.
Pros:- Lightweight design reduces user fatigue
- Converts easily between trimmer and edger
- Includes two batteries compatible with other WORX tools
Cons:- Battery life may be limited for large or continuous jobs
- Plastic parts could wear faster with heavy use
Best for: Homeowners seeking a lightweight, maneuverable trimmer for precise edging and light trimming tasks.
Not ideal for: Large-scale yard work or heavy brush clearing, due to limited durability and runtime for heavy-duty jobs.
- Power:20V
- Cutting Diameter:12 inches
- Line Diameter:0.065 inches
- No-load Speed:7600 rpm
- Weight:5.5 lbs
- Battery Included:Yes, 2 batteries
- Additional Features:90° tilting head, push button line feed
Bottom line: Best suited for users prioritizing control and comfort in small to medium yard maintenance.
EGO POWER+ 15-Inch Battery-Powered String Trimmer with 56V Battery and Charger
This EGO model provides a more powerful option with a 15-inch cutting width and a robust brushless motor, making it suitable for demanding yard work. Compared with the WORX 12-inch model, it offers increased capacity and longer run times, thanks to its 56V battery and durable design. The quick reload head simplifies line replacement, and its weather-resistant build adds durability for outdoor use. The tradeoff is its weight, which might tire users during extended sessions, and its higher price point reflects its professional-grade features. It’s a top pick for those who need serious power and extended runtime.
Pros:- Powerful brushless motor for extended runtime
- Quick, easy line reload with Rapid-Reload head
- Weather-resistant design for durability
Cons:- Heavier than smaller, less powerful models
- Battery life may be insufficient for very large jobs
Best for: Homeowners with large, overgrown yards needing a powerful, long-lasting trimmer.
Not ideal for: Casual gardeners or those with small lawns, due to its weight and cost.
- Cutting Width:15 inches
- Line Diameter:0.095 inch
- Battery:56V 2.5Ah
- Charge Time:50 minutes
- Motor:Brushless
- Warranty:5-year tool, 3-year battery
Bottom line: Perfect for demanding users who need a high-capacity, professional-grade cordless trimmer.
EGO Power+ Edger & Power Head Kit, 8″ Cordless Electric with Multi-Head System
This kit emphasizes precision with its 8-inch edger attachment and lightweight carbon fiber shaft, making it ideal for detailed yard edging. Compared with the other models, it offers specialized performance in edging rather than broad trimming, with a focus on durability and long-term use thanks to its brushless motor and weather resistance. While the 8-inch capacity limits its use to edging, the compatibility with all EGO 56V batteries adds value for those investing in the EGO ecosystem. The primary tradeoff is the need to purchase batteries separately, which can add to overall costs, and its limited capacity for larger trimming jobs.
Pros:- Lightweight, durable carbon fiber shaft
- Compatible with all EGO 56V batteries
- Long-lasting brushless motor for efficiency
Cons:- Battery not included, requiring additional purchase
- Limited to 8-inch edging capacity
Best for: Gardeners needing a dedicated, long-lasting edging tool compatible with a versatile battery system.
Not ideal for: Users seeking a multi-function trimmer for large areas or general lawn maintenance, due to its narrow capacity and focus on edging.
- Power Head Model:PH1420
- Edger Attachment Model:EA0820
- Blade Size:8 inches
- Material:Carbon fiber
- Battery:Not included
- Warranty:5-year limited
- Weather Resistance:IPX4
Bottom line: Best suited for precise edging tasks and users already invested in the EGO battery ecosystem.
21V Cordless String Trimmer with 2 Batteries and Charger, 12-Inch Weed Eater, 2-in-1 Trimmer & Edger Lawn Tool
This JAGROM 21V trimmer stands out for its combination of power and convenience, especially with two batteries that extend runtime beyond what many 20V models offer. Its 12-inch cutting width and adjustable handle make it suitable for a variety of yard tasks. Compared with the MZK 20V, it provides better runtime thanks to the extra battery, though it may overheat during heavy use, requiring cool-down periods. The lightweight design under 5 pounds makes it accessible for prolonged use, but the motor’s tendency to stop when overheated can interrupt work. Its foldable structure and safety features enhance usability, making it a solid choice for homeowners with moderate to thick grass. However, users should consider that additional batteries or accessories could be needed for larger jobs.
Pros:- Powerful motor handles thick grass and weeds
- Includes two batteries for prolonged use
- Adjustable handle and shaft for comfort
- Lightweight and foldable for storage
Cons:- Stops when overheated, requiring cooling time
- Battery life may vary with heavy use
Best for: Homeowners seeking a lightweight, versatile trimmer capable of handling thick weeds with extended runtime.
Not ideal for: Users needing continuous, heavy-duty professional trimming without interruption due to overheating.
- Voltage:21V
- Battery Capacity:2 x 3.0Ah
- Battery Life:Up to 60 minutes
- Weight:4.08 lbs
- Cutting Width:12 inches
- Included:2 batteries, charger, 8 spool lines, 2 caps
Bottom line: This model suits homeowners who want a portable, flexible trimmer with extended runtime but can accept slight interruptions during intense use.
MZK 20V 12” Cordless String Trimmer with 8 Spools, Battery & Charger Included
The MZK 20V trimmer is tailored for homeowners with smaller yards or lighter trimming tasks. Its 8000 RPM motor provides ample power for typical lawn edges, and the automatic line feed system reduces manual effort, unlike some models that require frequent adjustments. Weighing only 6.3 pounds, it’s easier to maneuver than larger options like the Greenworks 40V. However, compared to the JAGROM, it has a shorter runtime due to smaller batteries and a less robust motor, making it less suitable for overgrown or thick weeds. The included multiple spools and batteries add convenience for quick swaps, though battery life may limit extended projects. Overall, this is better suited for users who prioritize ease and simplicity over power and endurance.
Pros:- Powerful upgraded motor for efficient trimming
- Lightweight and ergonomic for ease of use
- Automatic line feed reduces manual adjustments
- Includes multiple spools and batteries for convenience
Cons:- Limited battery life for large jobs
- Not suitable for professional or heavy-duty use
Best for: Homeowners with small to medium yards looking for an easy-to-use, lightweight trimming tool.
Not ideal for: Users with large or overgrown yards needing longer runtime and more power, who might find this model underwhelming.
- Motor Speed:8000 RPM
- Weight:6.3 lbs
- Cutting Diameter:12 inches
- Battery:2 x 4Ah batteries
- Charger:Included
- Number of Spools:9 (1 built-in + 8 replacement)
Bottom line: This trimmer makes the most sense for light-duty homeowners who value simplicity and portability over extended runtime or maximum power.
Greenworks 40V Cordless Yard Tool Combo Kit with 2.0Ah Battery & Charger – 12″ Auto Feed String Trimmer and 390 CFM Leaf Blower
This Greenworks combo combines a 12-inch trimmer and a powerful leaf blower, making it ideal for homeowners seeking a comprehensive yard tool set. The 40V system offers more power and longer run times than 20V models like the MZK, plus the universal compatibility across Greenworks tools allows easy expansion. The blower’s 110 MPH air speed and 390 CFM volume excel at clearing leaves and debris, while the lightweight trimmer is comfortable for extended use. However, the 2.0Ah battery may limit runtime for larger jobs, and the auto-feed trimmer line can occasionally jam, which is less common on higher-end models like EGO. Compared to standalone trimmers, this kit suits those wanting a multi-purpose system rather than a dedicated, heavy-duty trimmer alone.
Pros:- Lightweight and easy to handle
- Powerful blower with 110 MPH air speed
- Universal 40V ecosystem for tool expansion
- Quiet operation suitable for early mornings
Cons:- Battery life may be limited for large jobs
- Trimmer line auto-feed can jam occasionally
Best for: Homeowners who want a versatile, quiet, and lightweight yard system with both trimming and blowing capabilities.
Not ideal for: Those with large, overgrown yards or frequent heavy-duty trimming should consider more powerful single-task tools.
- Battery:2.0Ah, 60-minute charge
- Trimmer Length:12 inches
- Trimmer Line Diameter:.065 inches
- Blower Air Speed:110 MPH
- Blower Air Volume:390 CFM
- Weight:8 lbs
- Noise Level:67 dB
- Warranty:3-year core, 2-year battery
Bottom line: This combo kit suits homeowners who want a balanced, multi-tool yard system with quiet operation and decent power for routine maintenance.
How We Picked
I evaluated each cordless string trimmer based on several key factors: cutting performance, battery life, ease of operation, weight, durability, and value for money. Products with a good balance of power and portability ranked higher, especially those with longer battery runtimes and straightforward usability. I also considered user reviews and brand reputation to ensure these options are reliable for different yard sizes and user experience levels. The ranking reflects a combination of performance, versatility, and affordability, helping buyers find models suited to various needs from basic trimming to more demanding tasks.Factors to Consider When Choosing String Trimmer Cordless
Choosing the right cordless string trimmer involves more than just picking the most powerful model. Several factors influence how well a trimmer will perform in your yard and how comfortable it will be to use over time. Understanding these considerations can help you avoid common pitfalls and select a tool that truly matches your landscaping needs.Battery Power and Runtime
The battery voltage and capacity directly impact how long you can work without recharging. Higher voltage batteries (such as 40V or 56V) tend to deliver more cutting power, suitable for thick weeds and larger areas. However, they also tend to be heavier, which can cause fatigue. Smaller batteries (20V or 21V) are lighter and more affordable, ideal for small yards or occasional use, but may require more frequent recharges during larger jobs.
Cutting Width and Performance
The width of the cutting swath determines how much area you can cover quickly. A wider cutting path (e.g., 15 inches) speeds up trimming but can add weight and bulk. Conversely, narrower trimmers (around 12 inches) are easier to handle, especially for detailed work or precision edging. Performance also hinges on blade type, line feed mechanism, and motor power—look for models that can handle tougher weeds without bogging down.
Weight and Ergonomics
Comfort during extended use is essential, especially if you have a large yard. Lighter models reduce fatigue but might sacrifice some power or durability. Ergonomic features like adjustable handles, balanced weight distribution, and soft grips enhance comfort and control. Testing the weight and handling in-store, if possible, can prevent fatigue and strain over time.
Additional Features and Versatility
Some trimmers come with multi-tool systems, allowing you to swap heads for edging, hedge trimming, or cleaning. While these increase functionality, they often add to the cost and complexity. Auto line feed systems can reduce frustration, but they might malfunction or require maintenance. Consider what extra features genuinely add value for your specific yard tasks.
Budget and Long-Term Value
Pricing varies widely, reflecting differences in power, durability, and features. Cheaper models may be suitable for light, occasional use but could wear out faster or lack power needed for tougher jobs. Investing in a slightly more expensive, reputable brand often results in greater reliability and longer lifespan, especially if you plan to use the trimmer regularly. Balance your budget with your yard size and expected use to find the best long-term value.
Frequently Asked Questions
How long does a cordless string trimmer battery typically last?
Battery life varies depending on voltage and capacity. Most 20V batteries offer around 20-30 minutes of continuous trimming, which is enough for small to medium yards. Higher voltage batteries, like 40V or 56V, can last 45 minutes or more, but they are usually heavier. Carrying an extra battery is a smart way to extend runtime without waiting for recharges, especially for larger projects.
Are cordless string trimmers powerful enough for thick weeds?
Yes, but their effectiveness depends on the battery voltage and motor quality. Models with 40V or higher batteries tend to handle tougher weeds better, providing sufficient power for most yard tasks. Lower voltage models may struggle with dense or woody growth, requiring more passes or risking motor burnout. For thick weeds, investing in a higher voltage or more powerful model is advisable.
Can I use a cordless string trimmer for edging?
Absolutely. Most cordless trimmers are designed with adjustable heads or removable blades that make edging straightforward. Selecting a model with an adjustable or rotating head can improve precision and comfort. Keep in mind that some cheaper models might lack this feature, so check the product specifications if edging is a priority for you.
How important is weight when choosing a cordless string trimmer?
Weight significantly impacts comfort and fatigue, especially if you plan to use the trimmer for extended periods. Lighter models, typically under 8 pounds, are easier to maneuver and less tiring, but they may offer less power or durability. Heavier models often provide more robust performance but can cause strain during long sessions. Consider your physical comfort and yard size when selecting a weight class.
What maintenance does a cordless string trimmer require?
Regular maintenance includes cleaning the cutting head, checking the line for wear, and periodically inspecting the battery contacts. Some models may require blade sharpening or replacement of the spool. Proper storage—keeping the battery charged but not overcharged, and storing the tool in a dry place—extends its lifespan. Following the manufacturer’s maintenance recommendations can keep your trimmer performing reliably over years of use.
Conclusion
If you’re seeking a reliable, all-around performer for a medium-sized yard, the BLACK+DECKER 20V MAX String Trimmer and Edger offers excellent balance at an affordable price. For those with larger lawns or tougher weeds, the EGO POWER+ 15-Inch Battery-Powered Trimmer provides higher power and longer runtime. Beginners or those with small yards will appreciate the lightweight and straightforward design of models like the WORX Cordless String Trimmer. Budget-conscious buyers should consider the MZK 20V 12” Cordless String Trimmer for basic needs, while serious landscapers might opt for premium options with multi-tool capabilities. Ultimately, your choice depends on yard size, power needs, and how much you’re willing to invest in convenience and durability.
