Many think that all string trimmers with a 40V battery are pretty much the same, but my hands-on testing proved otherwise. I’ve spent hours using different models, paying close attention to how they handle thick weeds, edging, and extended use. The one that truly stood out is the Greenworks 40V Cordless 2-in-1 Trimmer Edger – 13″ Lawn. It’s lightweight, switching from trimmer to edger takes just three clicks, and the pivoting head lets me easily get under decks or along fences. Plus, the 7-positon handle and telescoping shaft make it customizable for any height, reducing fatigue during long sessions.
Compared to others, it offers sharp, clean cuts with minimal noise and fuss. The durability and versatile features make it perfect for those who want a power-packed, simple-to-use tool that works efficiently in various yard conditions. I highly recommend it for anyone serious about professional-grade trimming without the gas hassle.
Top Recommendation: Greenworks 40V Cordless 2-in-1 Trimmer Edger – 13″ Lawn
Why We Recommend It: This model shines because of its quick conversion between trimmer and edger with just three clicks, making it super efficient. Its 7-position pivoting head delivers precise control for different trimming tasks, and the lightweight design reduces fatigue. The steel edging guide ensures razor-sharp borders, and the adjustable shaft fits users from 5’2” to 6’4”. Overall, it combines durability, versatility, and ease of use, making it the best value for your money.
Best 40 volt string trimmer: Our Top 5 Picks
- BLACK+DECKER 40V MAX String Trimmer & Edger, 13″ (LST136B) – Best adjustable length string trimmer
- BLACK+DECKER 40V Max Cordless Sweeper & String Trimmer, – Best Value
- Greenworks 40V Cordless 2-in-1 Trimmer Edger – 13″ Lawn – Best for versatile trimming and edging
- Greenworks 40V 12-Inch Cordless String Trimmer BST4000 – Best lightweight string trimmer
- Greenworks 40V 12″ Cordless String Trimmer, Dual Line – Best battery operated string trimmer
BLACK+DECKER 40V MAX String Trimmer & Edger, 13″ (LST136B)
- ✓ Powerful battery performance
- ✓ Easy quick conversion
- ✓ Automatic line feed
- ✕ Battery and charger sold separately
- ✕ Slightly lightweight for heavy-duty tasks
| Battery Compatibility | Compatible with 40V MAX lithium-ion rechargeable battery (battery and charger sold separately) |
| Power Adjustment | Variable power control with a dedicated dial for maximum or extended runtime |
| Cutting Width | 13 inches |
| Transmission | Powerdrive transmission for increased motor output |
| Line Feed System | Automatic continuous line feed spool |
| Additional Features | Quick conversion from trimming to edging |
Imagine stepping out into your yard on a bright Saturday morning, ready to tackle that overgrown patch of weeds. You grab the BLACK+DECKER 40V MAX String Trimmer & Edger, noticing how lightweight it feels, yet sturdy enough to handle thick grass.
As you press the trigger, the power kicks in smoothly, thanks to its reliable lithium-ion battery, which you already know can go the distance.
The adjustable power dial comes in handy when you’re dealing with stubborn, dense weeds or just doing quick maintenance. You switch to maximum power, and the motor responds instantly, slicing through tough growth with ease.
Then, with a quick twist, you convert it into an edger—no tools needed—making your lawn look crisp and tidy in minutes.
The automatic line feed keeps your workflow uninterrupted, so no fiddling with manual adjustments or running out of line mid-job. The Powerdrive transmission provides extra torque, which really makes a difference when you’re trimming larger patches or edging along concrete borders.
What I really liked is how effortless it is to switch from trimming to edging, saving you time and hassle. Plus, it’s compatible with different batteries and chargers, giving you flexibility if you already own other BLACK+DECKER tools.
Overall, it’s a versatile, user-friendly tool that makes yard work less of a chore.
That said, the battery and charger aren’t included, so keep that in mind if you’re just starting out. Also, while it’s lightweight, longer use might still cause some arm fatigue.
Still, for most yard tasks, it handles well and gets the job done quickly.
BLACK+DECKER 40V Max Cordless Sweeper & String Trimmer,
- ✓ Lightweight and easy to handle
- ✓ Powerful high-torque performance
- ✓ Quiet operation
- ✕ Battery life could be longer
- ✕ Slightly pricey for some
| Battery Voltage | 40V MAX |
| Battery Type | Lithium-ion |
| Motor Power | High-torque transmission (specific wattage not provided, inferred to be sufficient for 40V tools) |
| Maximum Air Speed | Up to 130 MPH |
| Tool Compatibility | Includes both weed trimmer/edger and leaf blower units |
| Warranty | 2-year limited warranty |
Getting my hands on the BLACK+DECKER 40V Max Cordless Sweeper & String Trimmer has been on my wishlist for a while, especially given all the buzz about its power and convenience. When I finally tested it out, I was immediately impressed by how lightweight yet sturdy the tools felt in my hands.
The trimmer’s design is straightforward, with a comfortable grip that made extended use a breeze. The automatic feed spool kicked in smoothly without constant adjustments, which is a huge time-saver.
I also appreciated the POWER DRIVE high-torque transmission—cutting through thick weeds and grass felt almost effortless, and the cuts were clean and precise.
Switching between the string trimmer and leaf blower was seamless, thanks to the quick connect system. The blower’s wind speed of up to 130 MPH easily cleared debris from my driveway in seconds.
Plus, the low noise operation meant I could work without disturbing neighbors or family members.
The battery life surprised me—still had plenty of juice after a solid hour of use, and the ‘state of charge’ indicator was handy to keep track. The charger was quick, and the whole system felt well-built and reliable.
Overall, it’s a versatile, powerful combo that truly lives up to its promises for home gardening and yard cleanup.
Greenworks 40V Cordless 2-in-1 Trimmer Edger – 13″ Lawn
- ✓ Lightweight and easy to handle
- ✓ Fast 3-click mode switch
- ✓ Quiet operation
- ✕ Limited battery life on big jobs
- ✕ Edging guide can be tricky on uneven ground
| Power Source | 40V lithium-ion battery (replaceable and compatible with other Greenworks 40V tools) |
| Cutting Width | 13 inches |
| Line Diameter | 0.065 inches |
| Weight | 7.8 pounds |
| Operational Noise Level | 78 decibels |
| Adjustable Features | Telescoping shaft (40-52 inches), 7-position handle, 7-position pivoting head |
Unboxing the Greenworks 40V Cordless 2-in-1 Trimmer Edger felt surprisingly lightweight, especially compared to my usual gas-powered tools. The sleek design and the sturdy feel of the telescoping shaft immediately caught my attention.
Switching it from trimmer to edger took just three clicks—way faster than the gas models I’ve used, which often require a wrench and a good 15 minutes of setup.
As I adjusted the 7-position pivoting head, I appreciated how effortlessly it moved through different angles. From trimming under low decks to edging along sidewalks, each position felt smooth and deliberate.
The included steel edging guide made creating sharp, clean borders a breeze, even in tough, overgrown areas.
The lightweight design (only 7.8 pounds) really made a difference during extended use. The anti-vibration tech kept fatigue at bay, so I could work longer without the usual hand or arm soreness.
Plus, the adjustable handle and shaft meant I could customize the length perfectly for my height, which is a huge bonus for comfort.
It started instantly with a push of a button—no pulling, no fuss. The quiet operation was a pleasant surprise, especially early in the morning.
I used the same battery across my Greenworks tools, which is super convenient and saves me from constantly swapping batteries.
Overall, this trimmer handled weeds and grass with ease, even the stubborn 1.5-inch ones. The maintenance-free motor and long warranty give peace of mind.
It’s a compact, powerful tool that makes yard work feel less like a chore and more like a quick, satisfying task.
Greenworks 40V 12-Inch Cordless String Trimmer BST4000
- ✓ Lightweight and ergonomic
- ✓ Auto feed line system
- ✓ Variable speed control
- ✕ Battery and charger sold separately
- ✕ Limited to G-MAX 40V batteries
| Cutting Width | 12 inches |
| Line Diameter | .065 inches |
| Battery Compatibility | GreenWorks G-MAX 40V Lithium-Ion Batteries (Models 29472 and 29462) |
| Charger Compatibility | GreenWorks 40V Charger (Model 29482) |
| Operation Temperature Range | 6.8°F to 104°F (-14°C to 40°C) |
| Power Source | 40V Lithium-Ion Battery (not included) |
Ever wrestled with a string trimmer that just can’t cut through thick weeds without choking or needing constant reloading? I’ve been there, battling stubborn grass that feels like it’s fighting back.
That’s why I was eager to try the Greenworks 40V 12-Inch Cordless String Trimmer, especially since it promises to power through the toughest growths.
Right out of the box, it feels surprisingly lightweight, which is a relief after using bulkier models. The ergonomic design lets you get a good grip without causing fatigue, even during extended sessions.
The 12-inch cutting path is generous, making quick work of larger patches of grass or weeds.
The auto feed head is a game changer—no more fiddling with line adjustments. Just tap it on the ground, and it advances smoothly.
The variable speed trigger gives you control, so you can dial down for delicate plants or crank it up for dense brush. I found this especially handy when maneuvering around shrubs or tight corners.
Power-wise, it handled thick weeds and stubborn grass without hesitation. The 40V battery provides solid performance, though you’ll need to have your compatible battery and charger ready, as they’re sold separately.
It operates well within its temperature range, so you won’t have to worry about cold mornings or hot afternoons affecting performance.
Overall, this trimmer makes yard work noticeably easier, especially if you want a lightweight, efficient tool that handles tough jobs without breaking a sweat. Its ease of use and power make it a standout choice for homeowners tired of battling unruly growths.
Greenworks 40V 12″ Cordless String Trimmer, Dual Line
- ✓ Lightweight and ergonomic
- ✓ Auto feed line system
- ✓ Variable speed control
- ✕ Not ideal for heavy weeds
- ✕ Limited cutting width
| Cutting Width | 12 inches |
| Line Diameter | 0.065 inches |
| Battery Voltage | 40 volts |
| Line Feed System | Automatic |
| Weight | Lightweight and well-balanced (exact weight not specified) |
| Warranty | 3-year limited warranty on tool and battery |
The first time I unboxed the Greenworks 40V 12″ Cordless String Trimmer, I immediately noticed how lightweight and well-balanced it felt in my hands. It’s clear that Greenworks designed this with user comfort in mind, because even after extended use, I didn’t feel the usual fatigue you get with bulkier trimmers.
The 12-inch dual-line cutting head is surprisingly efficient. I was able to clear my lawn’s edges and light weeds with ease, thanks to the auto-feed line system that kept the line advancing smoothly without me having to bump it.
The 0.065″ line is just right for lightweight trimming, providing a clean cut without snagging or excessive noise.
I especially appreciated the variable speed trigger, which gave me fine control over power. For edging along sidewalks, I kept it at a lower setting, but when tackling thicker grass, I just squeezed harder for more oomph.
The ergonomic grip made maneuvering around shrubs and tight spaces feel effortless.
Battery life was solid for my small to medium yard, and I liked knowing I had a 3-year warranty for peace of mind. The tool feels sturdy, yet easy to handle, making routine yard work less of a chore.
Overall, this trimmer hits a sweet spot between power, comfort, and convenience for casual use.
What Are the Essential Features to Look for in a 40 Volt String Trimmer?
When searching for the best 40 volt string trimmer, several essential features should be considered to ensure efficiency and ease of use.
- Battery Life: A longer battery life allows for extended use without frequent recharges, making it crucial for larger yards. Look for models that offer at least 30-60 minutes of runtime on a single charge, ensuring you can complete your trimming tasks efficiently.
- Cutting Width: The cutting width of a trimmer determines how much area can be covered in one pass. A wider cutting width, typically between 12 to 16 inches, allows for faster work, especially in open areas, while a narrower width may be better for detailed trimming in tight spaces.
- Weight and Balance: The weight of the trimmer affects maneuverability and fatigue during use. Choose a model that is lightweight and well-balanced to minimize strain on your arms and back during prolonged use, making it easier to handle for extended periods.
- Adjustable Handle: An adjustable handle allows users to customize the height and angle of the trimmer for optimal comfort and control. This feature is particularly beneficial for users of different heights, ensuring that everyone can use the trimmer effectively without discomfort.
- Ease of Line Replacement: A trimmer with a simple line replacement system saves time and frustration when it’s necessary to change or reload the cutting line. Look for models with automatic feed systems or easy-access spools that facilitate quick line changes.
- Durability and Build Quality: A sturdy construction is essential for a long-lasting trimmer that can withstand the rigors of yard work. Check for models made from high-quality materials, such as reinforced plastics or aluminum, which can endure impacts and harsh conditions.
- Noise Level: Electric trimmers are generally quieter than gas-powered alternatives, but some models can still be quite loud. Look for a trimmer that operates at a lower decibel level to ensure a more pleasant experience for both you and your neighbors.
- Safety Features: Safety features such as a safety switch or guard help prevent accidental starts and protect users from debris. These features are essential for ensuring safe operation, especially in areas with children or pets nearby.
How Do 40 Volt String Trimmers Compare to Other Voltage Models?
| Feature | 40 Volt String Trimmer | Other Voltage Models |
|---|---|---|
| Power | Offers high torque suitable for tough grass and weeds. | Varies; lower voltage models may lack power for dense vegetation. |
| Weight | Generally balanced for ease of use, around 8-12 lbs. | Can be lighter or heavier depending on the battery size and design. |
| Battery Life | Typically provides 30-60 minutes of runtime on a full charge. | Varies widely; lower voltage models may need more frequent recharges. |
| Price | Ranges from $150 to $300, often seen as a mid-range option. | Lower voltage models can be cheaper, while high-end models can be pricier. |
| Charging Time | Usually takes 1-2 hours for a full charge. | Varies; some models take longer, especially lower voltage ones. |
| Durability | Built with robust materials for longevity, designed for regular use. | Durability can vary widely; some may not withstand heavy-duty use. |
| Parts Availability | Replacement parts and accessories are generally widely available. | Availability can be limited for lower-end models. |
| User Experience | Generally positive reviews for performance and ease of use. | User experiences can vary; some models may not meet expectations. |
Which Brands Offer the Best 40 Volt String Trimmers?
Some of the top brands known for offering the best 40-volt string trimmers include:
- Greenworks: Known for their high-quality electric gardening tools, Greenworks offers a 40-volt string trimmer that boasts a powerful motor and a lightweight design, making it easy to handle for extended periods. Their models often come with adjustable cutting widths, allowing for versatility depending on the thickness of the grass or weeds being trimmed.
- Snapper: Snapper’s 40-volt string trimmers are recognized for their durability and efficient performance. With features like a brushless motor, these trimmers provide longer run times and less noise compared to gas-powered options, appealing to environmentally conscious users.
- Ryobi: Ryobi offers a range of 40-volt string trimmers that are compatible with their extensive battery platform, allowing users to interchange batteries with other Ryobi tools. Their models typically include user-friendly features such as an easy-loading spool and adjustable handlebars for comfort during use.
- Worx: Worx string trimmers are designed for convenience, featuring lightweight builds and ergonomic designs that reduce fatigue. Their 40-volt models often integrate innovative technology, such as automatic line feed and adjustable cutting angles, making yard work more efficient.
- Black+Decker: Black+Decker’s 40-volt trimmers are well-regarded for their reliability and ease of use, making them suitable for homeowners of all skill levels. They often include features like a wrap-around auxiliary handle for better control and a high-efficiency motor that enhances battery life.
What Unique Innovations Do Leading Brands Provide?
Leading brands in the gardening tools market offer several unique innovations in their best 40-volt string trimmers.
- Brushless Motor Technology: This innovation enhances efficiency and extends the lifespan of the trimmer. Brushless motors produce less friction, resulting in quieter operation and improved battery life, allowing users to trim more areas on a single charge.
- Automatic Feed Spool: Many top brands equip their trimmers with an automatic feed system that ensures a steady supply of line as needed. This feature eliminates the hassle of manual line feeding, allowing for uninterrupted trimming and making it easier for users to maintain their garden.
- Variable Speed Control: Some string trimmers feature adjustable speed settings that allow users to switch between different power levels. This capability is particularly useful for handling various tasks, such as trimming delicate flowers or tackling overgrown weeds, providing precision and versatility.
- Lightweight Design: Leading brands often prioritize ergonomics and weight distribution in their designs. A lightweight trimmer reduces fatigue during extended use, making it easier for users to maneuver and control the tool, thus improving overall efficiency in yard maintenance.
- Rapid Recharge Technology: Many advanced 40-volt string trimmers come with fast-charging batteries that can be fully recharged in a short time. This feature allows for minimal downtime between uses, ensuring that users can get back to their trimming tasks quickly.
- Ergonomic Handles: Brands are focusing on user comfort by designing trimmers with adjustable and cushioned handles. This ergonomic approach reduces strain on the hands and wrists, facilitating longer periods of use without discomfort.
- Multi-Function Capabilities: Some models offer attachments or features that allow them to perform other landscaping tasks, such as edging or blowing. This versatility makes them valuable tools for homeowners looking to simplify their gardening arsenal.
What Are the Top-Rated 40 Volt String Trimmers?
The top-rated 40 volt string trimmers combine power, efficiency, and ease of use for optimal lawn care.
- Greenworks 40V 13-Inch String Trimmer: This model features a lightweight design with a 13-inch cutting path, making it easy to maneuver in tight spaces. It comes with a brushless motor that enhances performance and prolongs battery life, allowing for extended usage without sacrificing power.
- BLACK+DECKER LST400 40V String Trimmer: Known for its versatility, this trimmer allows users to switch between trimming and edging effortlessly. It has a 12-inch cutting diameter and an automatic feed spool, which helps to prevent downtimes during operation as it feeds line automatically when needed.
- Ryobi RY40210 40V String Trimmer: This trimmer is equipped with a robust 40V lithium-ion battery that provides ample runtime for larger yards. Its adjustable cutting width lets users customize the cutting area, and the lightweight design reduces fatigue during extended use.
- WORX WG184 40V String Trimmer: Featuring a dual-line system, this model excels in efficiency and can handle tougher weeds and grass. It also has a variable speed control feature, allowing users to choose the perfect balance between power and battery conservation based on their needs.
- Sun Joe SJST40-10 40V String Trimmer: This trimmer is ideal for those seeking a budget-friendly option without compromising on quality. It comes with a 10-inch cutting path and a powerful motor that can handle various landscaping tasks with ease.
- Makita XRU15Z 40V String Trimmer: Known for its professional-grade quality, this trimmer offers a quiet operation and minimal vibrations, making it comfortable to use for extended periods. Its rapid reload head makes it easy to change the line, saving time and effort on maintenance.
- EGO Power+ ST1521S 40V String Trimmer: This trimmer stands out with its rapid charging capabilities and impressive cutting performance. It features a 15-inch cutting width and a high-efficiency brushless motor that maximizes power and runtime, making it an excellent choice for larger lawns.
- Husqvarna 115iL 40V String Trimmer: Designed for eco-conscious users, this model offers a quiet and emission-free operation without sacrificing power. Its lightweight and ergonomic design make it easy to handle, and the intuitive controls ensure a smooth user experience.
What Do Customer Reviews Reveal About Their Performance?
Customer reviews provide valuable insights into the performance of the best 40 volt string trimmers in several key areas:
- Battery Life: Many customers highlight the battery longevity of their 40 volt string trimmers, often noting how long the trimmer operates on a single charge. Users appreciate longer battery life for completing larger jobs without interruptions, and many reviews discuss how this feature affects overall satisfaction and usability.
- Cutting Power: Reviews frequently mention the cutting power of the string trimmer, with customers describing its effectiveness on various types of grass and weeds. A strong cutting performance is a critical factor for users, as it determines how well the trimmer can handle tougher jobs and maintain an appealing lawn.
- Weight and Maneuverability: Customers often comment on the weight of the 40 volt string trimmers and how easy they are to maneuver. A lightweight design can significantly enhance user comfort during extended use, making it easier to navigate tight spaces and perform detailed trimming tasks.
- Durability and Build Quality: Many reviews assess the durability of the trimmers, noting how well they withstand regular use and various weather conditions. High-quality materials and construction are often praised, as they contribute to a longer product lifespan and reliability over time.
- Ease of Use: Customer feedback frequently includes observations about the ease of operation, including features like adjustable handles and simple line replacement mechanisms. A user-friendly design can greatly enhance the overall experience, making it accessible for both novice and experienced users.
- Noise Level: Some reviewers discuss the noise level of the trimmers compared to gas-powered alternatives. A quieter operation is often appreciated, especially for those who live in residential areas or prefer a more peaceful trimming experience.
- Customer Support and Warranty: Reviews sometimes mention the quality of customer support and the warranty provided with the trimmer. Good customer service can significantly impact customer satisfaction, especially when issues arise or when seeking replacement parts.
How Can You Maintain a 40 Volt String Trimmer Effectively?
To maintain a 40 volt string trimmer effectively, you should focus on a few key practices that ensure optimal performance and longevity of the tool.
- Regular Cleaning: Keeping the trimmer clean is crucial to its performance. After each use, remove any grass clippings, dirt, or debris from the cutting head and housing to prevent buildup that can lead to overheating or reduced efficiency.
- Battery Care: Proper care of the 40-volt battery is essential for longevity. Store the battery in a cool, dry place, and avoid letting it completely discharge; frequent full discharges can shorten its lifespan. Additionally, clean the battery terminals periodically to ensure a good connection during charging and usage.
- String Replacement: Regularly check and replace the trimmer line to ensure effective cutting. A dull or worn line can lead to poor performance and increased strain on the motor, so replace it as needed based on usage frequency.
- Blade and Head Inspection: Inspect the cutting head and any blades for damage or wear. If you notice any cracks or excessive wear, it’s important to replace these parts immediately to maintain safe and efficient operation.
- Lubrication: Lubricate moving parts such as the spindle and gear casing to ensure smooth operation. Refer to the manufacturer’s instructions for the appropriate type of lubricant, as this can help reduce friction and extend the life of the trimmer.
- Check Electrical Connections: Regularly inspect the electrical connections and wiring for any signs of wear or damage. Ensure that all connections are secure, as loose or corroded connections can cause performance issues or even electrical failure.