Best Cordless String Trimmer Reviews – Complete Buyer’s Guide

For quick and easy trimming, cutting down overgrown patches or even keeping the edges of your lawn crisp and smart, having a cordless string trimmer is an invaluable piece of kit.

Cordless string trimmers, also known as weed eaters, have been reliable equipment for garden maintenance and will allow you to clean up areas that a mower might have missed.

Our Top Choice

After thorough research, we discovered that the BLACK+DECKER LST136 40V is the best cordless string trimmer in the market.

BLACK+DECKER LST136 40V MAX Cordless String Trimmer

Comparison Table & Runners Up

Looking for a specific cordless string trimmer? Looking for a specific brand? In the comparison table below, we shall tabulate the top 10 string trimmers in the market, allowing for an easier selection.

Image

Product Name

Feature​​​​s

Price

Availability

BLACK+DECKER LST136 40V MAX Cordless String Trimmer

BLACK+DECKER LST13640V

Power Output: 40V

Cutting Swath: 13”

Auto Feed Spool- Yes

Weight: 7.8 pounds

$$$

Greenworks 21342 12-Inch 24V Cordless String Trimmer

Greenworks 21342 12-Inch

Power Output: 24V

Cutting Swath: 12”

Auto Feed Spool- Yes

Weight: 8.8 pounds

$$

WORX WG163.9 20V Cordless Grass Trimmer

WORX WG163.9 20V

Power Output: 20V

Cutting Swath: 12”

Auto Feed Spool-

Weight: 5.3

$$

BLACK+DECKER LSTE525 20V MAX Lithium Easy Feed Cordless String Trimmer

BLACK+DECKER LSTE525

Power Output: 20V

Cutting Swath: 12”

Auto Feed Spool- Yes

Weight: 6.3 pounds

$$$

BLACK+DECKER LST300 Cordless string trimmer

BLACK+DECKER LST300

Power Output: 20V

Cutting Swath: 12”

Auto Feed Spool- Yes

Weight: 5.7 pounds

$$

Greenworks 21332 13-Inch 40V Cordless String trimmer

Greenworks 21332 13-Inch

Power Output: 40V

Cutting Swath: B13”

Auto Feed Spool- Yes

Weight: 5.3 pounds

$$

DEWALT DCST920P1 Brushless String Trimmer

DEWALT DCST920P1

Power Output: 20V

Cutting Swath: 13”

Auto Feed Spool- Yes

Weight: 14 pounds

$$$

Greenworks BST4000 12-Inch 40V Cordless String Trimmer

Greenworks BST4000 12-Inch

Power Output: 40V

Cutting Swath: 12”

Auto Feed Spool- Yes

Weight: 6.5 pounds

$$

WORX WG160 GT 2.0 20V PowerShare Cordless String Trimmer

WORX WG160 GT 2.0

Power Output: 20V

Cutting Swath: 12”

Auto Feed Spool- Yes

Weight: 5.7 pounds

$$$

Makita XRU09Z 18V X2 36V LXT Lithium-Ion Brushless Cordless String Trimmer

Makita XRU09Z

Power Output: 18V

Cutting Swath: 13”

Auto Feed Spool- Yes

Weight: 11.9 pounds

$$$

Top 10: Best Cordless String Trimmers

A quality cordless string trimmer is essential for proper lawn care. Unlike other forms of hedge trimmers, the cordless string trimmers have several advantages including lightness, easy to use, powerful and come with excellent run times.

String trimmers come in a plethora of shapes, size, features, and different capabilities, so it's vital that you compare the trimmers and get what is best for you.

Our team has expertly come up with a list of the top 10 cordless string trimmers in the market, saving from the hassle of trimmer selection.

1. Black+Decker Lst136 40v

Weighing at less than 10 pounds, this lightweight Black+Decker Lst136 40v offers exceptional performance at an incredible price range.

Sporting a 40V lithium-ion battery, this trimmer operates at speeds between 6500 and 8500 RPM, thus delivering plenty of kick, and will comfortably handle any tough grass or thicket you may need to trim.

With any battery-powered trimmer, runtime and power are always a concern, but this innovative trimmer comes with a PowerCommand function; a feature that will allow you to prioritize power or runtime.

QUICK SUMMARY

  • 40V
  • 13” cutting diameter
  • 52” Shaft
  • 7.8 pounds
BLACK+DECKER LST136 40V MAX Cordless String Trimmer

For instance, if you’re dealing with the tough and overgrown grass, you can switch to the Max Power setting that will chop through the bushes in minutes. The Max Runtime is handy if you’re looking to chop on the light grass over an extended period.

The 13’ cutting diameter on the blades offers a generous cutting diameter as it makes wide swathes, allowing for faster performances.

Another highlight we loved with this trimmer is the Automatic Feed Spool System, one of the best time-saving features that will ensure that your new line is fed automatically without bumping the trimmer.

And finally, we mentioned that the Black+Decker Lst136 40v is a dual-line head trimmer, meaning it allows for double action during a single sweep, and this will help at faster cutting and promoting efficient trimming.

TOP 3 FEATURES

  • PowerDrive
  • PowerCommand Function
  • Automatic Feed Pool System

The PowerDrive alongside the robust 40V power source will allow for bursts of power from the motor to the cutting strings, allowing faster completion of the trimming task.

WHAT WE LIKED

  • Versatile
  • Lightweight
  • Powerful Budget option

WHAT WE DIDN'T LIKE

  • Not ideal for heavy-duty tasks

2. Greenworks 12-Inch 24V

A highly rated cordless hedge trimmer, the Greenworks 12-Inch 24V is typical of any Greenworks product, thanks to the alluring green color. Aesthetics aside, this cordless trimmer is a well-build masterpiece that delivers on its promise.

Although on the lower end regarding power output, the 24V power output generated by this model is sufficient enough for the small to moderate applications, making this trimmer an inspired choice for the residential appliances.

QUICK SUMMARY

  • 24V
  • Check Badge
    40” Shaft
  • 12” cutting path
  • 8.8 pounds
Greenworks 21342 12-Inch 24V Cordless String Trimmer

Power aside, this trimmer comes with 40-inch shaft length. While we're still unsure whether the shaft is adjustable, what we're sure of is that it will provide you with incredible access to the hard to reach spots.

Still, on metrics, we love the 12-inch blade that will allow you to make swathes of larger surfaces, enabling for faster completion of the trimming tasks.

The pivoting head on the Greenworks 12-Inch 24V is highly versatile and will double up as both as a trimmer as well as an edger.

Underlining its adeptness as a residential trimmer, the Greenworks 12-Inch 24V comes with a single line head, which is not quite surprising. But what we loved about the head on this trimmer is the auto-feed in line that will promote the continuity of job.

TOP 3 FEATURES

  • 24V Output
  • 12-inch Blade
  • Auto Feed-In Line

This system will allow automatic feeding on the head without the need of bumping, and this promotes continuity of workflow.

WHAT WE LIKED

  • Easy to use
  • Lightweight-8.8 pounds
  • Aesthetic

WHAT WE DIDN'T LIKE

  • Not quite powerful

3. WORX WG163.9 20V

The Worx is perfect for light use around small yards and gardens. Simple to use, lightweight and extremely versatile, this cordless trimmer is a budget option that is going to provide you with unmatched performance.

For starters, the Worx is a 2-in-1 machine that doubles up as both a trimmer as well as an edger, meaning this trimmer is useful for both trimming and edging. The best thing about the dual function of this unit is that it will allow you to convert the trimmer to an edger through the simple flick of a switch.

QUICK SUMMARY

  • 20V
  • Check Badge
    12” Cutting diameter
  • 5.3 pounds
WORX WG163.9 20V Cordless Grass Trimmer

Delivering a power output of 20V, don't expect this model to complete with the more powerful cordless trimmers. In any case, this model is not designed or priced for heavy-duty applications, but rather does an incredible job for a lightweight, everyday trimmer.

Highly flexible, the Worx comes with an adjustable shaft, which will allow you to lengthen or shorten the shaft depending on your height as well as your trimming needs.

Flexibility is further underlined by the adjustable cutting head, which can be set in different positions up to a 90-degree angle, and this will allow you to reach the hard to reach spots with ease.

Weighing at 5.3 pounds, the Worx is among the lightest cordless trimmers on our list, and ultra-lightweight nature of this trimmer helps to promote portability and ease of use.

TOP 3 FEATURES

  • 2-in-1 Design
  • Adjustable shaft
  • Adjustable cutting head

The adjustable shaft provides flexibility as it allows you to set the height of the trimmer according to your needs.

WHAT WE LIKED

  • 2-IN-1
  • Versatile
  • Flexible
  • Lightweight

WHAT WE DIDN'T LIKE

  • No batteries

4. BLACK+DECKER LSTE525

Delivering a power output of 20V, the Black & Decker LSTE525 falls within the range of most of the cordless string trimmers in the market, and it has sufficient juice to get your trimmer rolling.

An almost too good to be true cordless hedge trimmer, this Black and Decker product is highly flexible and can be converted from a trimmer to a wheeled edger.

QUICK SUMMARY

  • 20V
  • Check Badge
    12’ cutting diameter
  • 6.3 pounds
BLACK+DECKER LSTE525 20V MAX Lithium Easy Feed Cordless String Trimmer

Performance-wise, the Black & Decker LSTE525 comes with a host of incredible features including a Power Drive Transmission, a function that will help in increasing the torque and delivering more power to handle the hard and thick shrubs and branches.

The 2-speed control is yet another awesome feature that allowed us to either extend our runtime or generate more power while using the Black & Decker LSTE525.

For convenient and easy use, the Black & Decker LSTE525 comes with an EasyFeed function, which will allow you to advance your line when it wears out with the flick of a button, without needing any bumping.

Finally, it’s worth noting that this trimmer comes with a cutting swath of 12” and this alongside the mere 6.3 pounds not only makes it ultra-portable but also easy to use.

TOP 3 FEATURES

  • Power Transmission Drive
  • 2-Speed Control
  • EasyFeed Function

This is a function that increases the torque and delivers more power, thus allowing the trimmer to handle the heavy-duty tasks comfortably.

WHAT WE LIKED

  • Lightweight
  • Easy to control
  • Easy to use
  • Efficient

WHAT WE DIDN'T LIKE

  • Not powerful for commercial-grade tasks

5. BLACK+DECKER LST300 Weed Whacker

Fifth on our list of the best cordless string trimmers is yet another product from Black and Decker, and this goes ahead to underline the popularity of this brand.

Like the BLACK+DECKER LSTE525 we had reviewed above, the LST300 comes with a 20-Volt lithium-ion battery pack. However, what probably separates the latter from the former is that the manufacturer claims the battery on the LST300 is built to offer 33% more run time.

QUICK SUMMARY

  • 20V
  • Check Badge
    2-IN-1
  • 12” Cutting swath
BLACK+DECKER LST300 Cordless string trimmer

Like the BLACK+DECKER LSTE525, however, the LST300 comes with a PowerDrive Transmission, function that will deliver more torque and power, allowing to get your cutting job done faster and more comfortably.

Speaking of comfort, the LST300 features an Automatic Feed Spool, and this will ensure the continuity of your trimming task without the need for bumping.

For a value-added purchase, the Black and Decker LST300 offers a 2-in-1 function, a feature that allows you to convert the trimmer into a edger in seconds easily.

The lightweight design (5.7 pounds) alongside the ergonomic design and an incredible pivoting handle will promote an easy use of this trimmer and make your general trimming experience less tiring.

TOP 3 FEATURES

  • PowerDrive Transmission
  • Runtime extension technology
  • Automatic Feed Spool

Underlining the continuity of job, the automatic feed spool will save you from the need of stopping and bumping the trimmer.

WHAT WE LIKED

  • Lightweight
  • Easy to use
  • Convenient

WHAT WE DIDN'T LIKE

  • No dual-action "blades."

6. Greenworks 13-Inch 40V

With the conspicuous green color, you can’t fail to notice the Greenworks 13-inch 40V cordless hedge trimmer. Combining versatility and performance, the Greenworks 13” will keep you and your lawn happy.

Weighing at 9.3 pounds, the Greenworks comes with a feather lightweight, and will not cause any muscle fatigue even after extensive use.

 Performance-wise, this cordless string trimmer comes with a slew of incredible features. For starters, as its name suggest, it offers a powerful power output of up to 40V and this will allow you to work comfortably even on the toughest jobs. 

QUICK SUMMARY

  • 40v
  • 13’ cutting swath
  • 9.3 pounds
Greenworks 21332 13-Inch 40V Cordless String trimmer

However, we were disappointed by the 30 minutes runtime offered by the trimmer. But still it’s within the range of most of the models within its price range, and a decent amount if you’re planning to use the trimmer for your lightweight residential uses.

Another incredible feature we loved about this trimmer is the 13' cutting path that will make generous swathes across your lawn, allowing for quicker completion of the task.

Though this trimmer comes with a single spool head, it does not compromise on the efficiency of this device. In any case, the trimmer sports a pivoting head, and this allows for both edging and trimming.

TOP 3 FEATURES

  • 40v Power output
  • Auto line feed
  • Lightweight

While the 40V is not the highest in the market, this power output is more than sufficient for the lightweight to moderate residential tasks.

WHAT WE LIKED

  • Powerful
  • Lightweight
  • Hassle-free experience

WHAT WE DIDN'T LIKE

  • Single line

7. DEWALT DCST920P1

The DEWALT DCST920P1 is a perfect weed eater with good power and excellent battery time, which makes this unit ideal for the regular trimming as well as getting rid of some tougher vines as well as dense grass.

A fairly unique feature on this string trimmer is a variable speed function that will allow you to vary the performance of your trimmer depending on the task at hand, allowing for a personalized and optimal performance.

QUICK SUMMARY

  • 20v
  • Check Badge
    13” cutting swath
  • Brushless motor
  • 14 pounds
DEWALT DCST920P1 Brushless String Trimmer

Besides the variable speed trigger, this string trimmer comes with a powerful 20v brushless motor that packs a punch. Now, while this is certainly not a replacement of the robust gas machines, the inclusion of a patented gear drive design will add more torque and allow the weed eater to maintain its cutting speed, even under load.

For a premium string trimmer such as this one, we expected to see an automatic feed, contrary to the bump feed. However, the bump line feeding is not much of a bummer as it works great and only requires a light tap against the ground.

TOP 3 FEATURES

  • Variable Speed Trigger
  • Patented Gear Drive
  • Excellent runtime

This function allows you to customize your operations .i.e. speed of rotation, power, and more to allows for optimal performance.

WHAT WE LIKED

  • PowerDrive feature for an enhanced performance
  • Controlled performance
  • Generous runtime

WHAT WE DIDN'T LIKE

  • No automatic line feed

8. Greenworks 12-Inch 40V

The Greenworks 12-inch 40V is yet another excellent product from Greenworks. Like all the Greenworks products in our list, this model is performance-oriented, and it delivers on its promise.

A high-performance model, this cordless G-Max hedge trimmer comes with a superb 40V Lithium-Ion battery that will deliver a fade-free power devoid of memory loss after charging.

A rung lower than the similarly-powered Greenworks 13-Inch 40V, the Greenworks 12-Inch 40V offers 12-inches of cutting path, an inch less than the former. Still, 12 inches is a decent metric and will allow you to cover large swathes in a single sweep, allowing you to complete your job quickly.

QUICK SUMMARY

  • 40v
  • Check Badge
    12”
  • 15 pounds
Greenworks BST4000 12-Inch 40V Cordless String Trimmer

Like the DEWALT DCST920P1 we reviewed earlier, this Greenworks hedge trimmer sports a variable speed trigger that will allow you to dial-up or power down your output depending on the task at hand. This will not only offer a more controlled experience but will allow you to enjoy an optimal performance with the available resources.

For convenience and ease of use, the Greenworks features an auto-feed head that will automatically advance your line without having to stop and bump your head.

TOP 3 FEATURES

  • Variable speed trigger
  • 40V Output
  • Auto Feed

This function will allow you to tailor the performance of this cordless hedge trimmer depending on the application at hand.

WHAT WE LIKED

  • Powerful
  • Easy to handle
  • Customizable

WHAT WE DIDN'T LIKE

  • Tad heavy

9. WORX WG160 GT 2.0

Ideal for homeowners with small to medium gardens, the Worx GT 2.0 is a truly “green” option your lawn maintenance.

Lightweight and easily maneuverable, this weed eater has the capability of trimming grass from any angle, and it's fully adjustable to fit the needs of all homeowners.

Under the hood of the Worx, we have a powerful 20-volt lithium battery, and this battery, alongside the single cutting line, transforms the Worx into a faithful companion to use or all the garden chores.

QUICK SUMMARY

  • 20 V
  • Check Badge
    3-in-1
  • 12” cutting swath
WORX WG160 GT 2.0 20V PowerShare Cordless String Trimmer

A unique feature on the Worx is a 3-in-1 function that will allow this cordless weed eater to double up as both a mini-mower for the hard-to-get spots as well as an edger.

Adjustability on the Worx is yet on another level, thanks to the highly adjustable telescopic shaft that will allow you to adjust the weed eater’s shaft at seven different heights for the ultimate flexibility. The adjustable shaft means you can now reach the tall heights with less of a hassle and more importantly, you can adjust the height of the trimmer to meet that of yours for optimal use.

To keep all your flowers or garden furniture space, you’ll appreciate the fully adjustable spacer guard.

TOP 3 FEATURES

  • 3-in-1 Function
  • Adjustable Spacer Guard
  • Adjustable Telescopic Handle

This feature will allow the Worx 2.0 to convert from a cordless hedge trimmer to either a mower or an edger in a matter of seconds.

WHAT WE LIKED

  • Value for money
  • Powerful
  • Highly adjustable

WHAT WE DIDN'T LIKE

  • Longer recharging time (3 hours)

10. Makita XRU09Z 18V X2

Makita is no stranger to outdoor power equipment having extensive coverage in lawn tools. And today, we're going to explore one of their offerings, the Makita XRU09Z.

Powered by Makita's BL brushless motor with a direct power-drive, the 18V Makita delivers more power, run time, and this ensures an overall longer tool life.

Under the low drive power settings, the Makita can deliver a whopping 60 minutes of runtime, which is quite sufficient for all your trimming needs.

QUICK SUMMARY

  • 18v
  • Check Badge
    11.9 pounds
  • 13’ cutting swath
Makita XRU09Z 18V X2 36V LXT Lithium-Ion Brushless Cordless String Trimmer

The motor on the Makita is electronically controlled, allowing for optimized battery energy and allows you to match the changing demands of the job at hand. For instance, this trimmer comes with two-speed options (Low:5,000 RPM, High: 6,500 RPM), and the variable speed setting will help to match the performance of the stringer accordingly.

For improved protection of the string trimmer, the Makita comes with an Extreme Protection Technology (XTP), a feature that uses a protective seal inside the tool and is tailored for improved protection against harsh environmental conditions.

TOP 3 FEATURES

  • Variable speed
  • Extreme Protection Technology
  • Direct Power Drive

This feature will provide torque to the motor allowing it to deliver more power and enhance performance.

WHAT WE LIKED

  • Powerful
  • Enhanced safety features
  • Flexible

WHAT WE DIDN'T LIKE

  • Tad heavy

Best Cordless String Trimmer Buyer Guide

In the section below, we shall explore some of the basic features you need to consider when buying a cordless trimmer.

Additionally, we shall look at the basic function of trimmers, how they work, and the various types of cordless trimmers in the market.

How Cordless String Trimmers Work

Like their name suggest, cordless string trimmers are landscaping tools that use a string to trim your yard.

When the high-quality monofilament string is rotated at a high velocity, it stiffens enough to slice through weed.

With technological advances in this field, you will no longer have to manually bump the underside of your trimmer to feed new strings. The new models, you’ll be treated to a hands-free experience, thanks to the automatics quick-feed feature that automatically advances the strings or allows you to feed the string with a simple touch of a button.

Either way, the ability of the string trimmers to replace worn-out string with new cutting lines is beneficial in the sense that it does not require regular sharpening as we've witnessed with the metal blade trimmers.

How to Choose the Right Trimmer

There’re some basic guidelines for which to follow and features to look out for.

First off, you need to consider the size of your yard and frequency of your trimming; if you have a large yard, a gas-powered weed eater is recommended as they will provide you with an unlimited range as well as the power you need for such applications.

On the other hand, if you have a small to moderate garden, and usually don't have thick bushes or demanding applications, a battery-powered cordless model is an inspired choice.

Factors to Consider When Choosing a Cordless Power Trimmer

Let’s look at the features that you need to consider when choosing cordless power trimmer;

Battery Power

A higher battery voltage translates to more power.

Ideally, if you’re looking cordless trimmer for your residential uses or rather for the small to moderate uses, a battery we recommend going for anything between 30v to 40v.

However, if you're looking for a heavy-duty trimmer for commercials needs, a battery from 60v and above is better.

Battery Life

Besides power, you also another essential factor to consider on the battery is how long it can last or rather run on a single charge.

Anything above half an hour should be perfect, but there’re some which will give you up to a full hour without the need of replacing the battery or plugging in.

Here, you’ll need to think about your task and decide if the battery life of the unit you’re considering will be enough.

Charge Time

Still, on the batteries, some will take an eternity to charge, while others have fast-charge technology, requiring only 30 minutes to full charge.

Having a quick-charging battery can make a significant difference, especially if you have a large project to handle since you'll not need to wait for long in between charges.

Cutting Width

The cutting width is proportional to how wide a trimmer will cut and consequently how fast you will complete your trimming task.

Cordless trimmers come with various cutting widths, some as narrow as 10 inches and some as large as 18”.

The former is ideal for those with tight spaces and small yards, while the latter is a perfect choice for those with large gardens.

Shaft Style

There are three primary shaft options; straight, curved, and adjustable.

The straight shaft, for instance, is ideal for trimming the tight spaces, thanks to its inline design, and ideal for getting under obstacles such as bushes, decks, shrubs, and benches. On the downside, they offer an unwieldy control.

The curved shafts, on the other hand, are easier to control allowing you to guide your trimmer to the tight spots easily.However, though they’re easy to control, they’re difficult to move.

Finally, both the straight and curved options may feature an adjustable shaft feature, and it’s this function that will allow you to adjust the height of your stool. The adjustable shafts are highly recommended as they will not only allow you to reach to spot you normally couldn’t reach, but it allows you to adjust the trimmer according to your height needs.

Single/Dual-feed Line

Cordless string trimmers are available with either a single or dual-feed line. This is to mean they have either one cutting string or two.

Single-line heads are easier to install and perfect for those with small to moderate gardens.

The two-line heads, on the other hand, are more suited to the heavier-duty works and are faster, making trimming tougher grass or weed quicker and easier as they cut twice per revolution.

Dual-Mode Function

Some cordless trimmers are highly versatile and can be easily converted into edge mode by simply rotating the head.

If you think that an edger mode is something that would be handy in your operation, ensure that you get a model with this capability.

Weight

Since you’re going to spend your time carrying a string trimmer, you need to get a practical trimmer weight.

Since the weight of the cordless trimmers ranges between 5 to 20 pounds, it means there're some trade-offs that you may need to consider.

Conclusion

To choose the perfect trimmer, you need to consider the size of your yard, the difficulty of your workload and your budget. This way, you'll find a model that's ideal for your landscaping needs.

If you're a homeowner, you can never go wrong with a cordless hedge trimmer. Generally, cordless trimmers are lightweight, incredibly efficient, and affordable.

For quick and easy trimming, cutting down overgrown patches or even keeping the edges of your lawn crisp and smart, having a cordless string trimmer is an invaluable piece of kit. Cordless string trimmers, also known as weed eaters, have been reliable equipment for garden maintenance and will allow you to clean up areas that a mower might have missed. Our Top Choice After thorough research, we discovered that the BLACK+DECKER LST136 40V is the best cordless string trimmer in the market. Comparison Table & Runners Up Looking for a specific cordless string trimmer? Looking for a specific brand? In…
After thorough research, we discovered that the BLACK+DECKER LST136 40V is the best cordless string trimmer in the market.

The 10 Best Cordless String Trimmers

Black+Decker Lst136 40v
Greenworks 12-Inch 24V
WORX WG163.9 20V
BLACK+DECKER LSTE525
BLACK+DECKER LST300
Greenworks 13-Inch 40V
DEWALT DCST920P1
Greenworks 12-Inch 40V
WORX WG160 GT 2.0
Makita XRU09Z 18V X2

Overall Score

After thorough research, we discovered that the BLACK+DECKER LST136 40V is the best cordless string trimmer in the market.

Qaiser
 

Qaiser, a 30-year-old gardener, co-founded Treillage with an aim to help educate the masses in green living. He heads the team responsible for testing and reviewing every gardening product that is featured on Treillage.

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