Best String Trimmer 2021: Features, Warranty, And More

The Best String Trimmer To Invest In

Yard man using string trimmer

Summer means it is time to take care of the lawn by mowing it, trimming around the trees and along the flowerbeds, and making sure it has enough water to thrive.

Fortunately, several companies manufacture outdoor equipment that makes this job

more manageable. Some of the lawn equipment they make includes string trimmers, edgers, lawn mowers, and hedgers.

After reading the best string trimmer review, you will be able to find the best trimmer for your lawn care needs.

Comparison Table

String Trimmer FAQs

Below are some of the most commonly asked questions about string trimmers. 

How Does A String Trimmer Work?

Which Power Sources Are Available For String Trimmers?

Where Can People Buy Trimmers?

What Are The Prices For Trimmers?

How Long Do Battery-Powered Trimmers Run?

How We Reviewed

Professional gardener in a uniform cuts bushes with clippers

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To come up with the list of string trimmers for this review, we read about each brand and type that are available to find the best ones. We also read the testimonials and reviews from buyers who bought the trimmers and used them for their lawns. Then we compiled the list for our readers to review and pick out the best trimmer for their use.

Overall Price Range Of String Trimmers

When shopping for string trimmers, the type of power and amount of energy they offer will affect the prices. Smaller trimmers that are corded can run as low as $35 to about $300. For cordless models running on a battery, they can cost up to $359, and those with gas-powered two or four-cycle engines run about $75 to $300.

Best String Trimmers On The Market

Several well-known companies produce outdoor equipment for helping the lawn and garden look beautiful. Many of these brands names include those our string trimmer review, such as: 

  • Black + Decker
  • Craftsman
  • Greenworks
  • Makita
  • Ryobi
  • Troy-Bilt

This list of trimmers consists of some of the best on the market for cutting down stray grass and weeds from lawns.

Makita XRU09PT1 18V X2 LXT String Trimmer

Makita XRU09Z 18V X2 (36V) LXT Lithium-Ion Brushless Cordless String Trimmer, Tool Only
  • Makita-built Outer Rotor BL Brushless Motor direct-drive system provides high power and...
  • 2-speed options (Low: 5,000 RPM, High: 6,500 RPM) allows the operator to match speed to...
  • Bump and Feed trimmer head rotates the same counterclockwise direction as professional...

This Makita string trimmer is available with a kit that has four lithium-ion batteries, or the trimmer is available for purchase without the batteries.  

Key Features

The Makita XRU09PT1 is a cordless trimmer that runs on a 5.0Ah lithium-ion battery. This trimmer is available with a battery kit that contains four batteries, or buyers can get the tool without the kit. The batteries only take 45 minutes to charge fully, or they can supply the trimmer with 2.0Ah of power within 25 minutes. 

The batteries have indicators that let the operator know if they are overheating, overloaded, or over-discharging. The LXT motor is brushless with a direct drive that provides more speed and power than other brands of weed-whackers. It can run at low speed, which is 5,000 RPM, or at high speed of 6,500 RPM.

It also comes with a trimmer head that’s bump and feed, and it is pre-loaded with .080-inch twisted line that runs quietly. If the line tangles, the motor has a reverse feature to free it. The total weight of the trimmer is 11.9 pounds.


This Makita model has a price range of $$ to $$, depending on whether it’s bought with the battery or the battery and grinder kit. 

Where To Buy

Makita tools are usually available from home improvement stores like Lowe’s, Home Depot, and Ace Hardware stores, or they are also available online from Amazon, eBay, and several other websites that specialize in selling tools. 


Makita products come with a one-year limited warranty and a 30-day return policy.

Craftsman V20 String Trimmer/Edger CMCST910M1

CRAFTSMAN String Trimmer, 14-Inch, 6.5-Amp, Push Button Feed System (CMESTE920)
  • 6.5 amp motor - high performance to tackle tough overgrowth
  • Ergonomic telescoping pole - featuring turn to edge capability
  • Push button feed system - allowing you to control the line feed with the push of a button

People trust the Craftsman name when it comes to hand and power tools like the V20 Stringer Trimmer/Edger. 

Key Features  

This model is a battery-powered trimmer that comes with a 20-volt lithium-ion battery. It has a brushless motor with a gear drive that supplies it with more torque when going through overgrown weeds and grass. The trimmer can cut a swath of grass 13-inches wide.  

It uses .080-inch line, and the trimmer has a variable speed trigger with a high/low switch to control the speed. The total weight of the trimmer is 8.5 pounds, so it is very lightweight, which makes it easier to handle and reduces fatigue when trimming the lawn. 

The trimmer comes with a battery and charger, but buyers can also choose to buy it with an extra battery, extra line, a hedge trimming blade, blower, or chainsaw. 


The Craftsman trimmer runs about $ or with an extra 4Ah battery for around $$. When buying it with a spare spool of line it is approximately $, with the hedge trimmer it may cost $$, the chainsaw makes the cost about $$, or with the blower, the price is about $$. 

Where To Buy

This trimmer is available offline at Sears Hometown stores, Ace Hardware, Lowe’s, and Atwoods. If you want to buy the trimmer online, it is available from Amazon.


Craftsman offers a three-year warranty on the V20 series of outdoor power tools, and they also include a 90-day satisfaction guarantee.

Greenworks ST40B410 G-Max 40V

Greenworks G-MAX 40V Cordless String Trimmer and Leaf Blower Combo Pack, 2.0Ah Battery and...
  • Up to 45 minutes of run time with fully charged 2.0Ah Battery, Battery and charger...
  • The innovative axial fan design delivers 110 mph and 390 CFM to handle tough clearing jobs
  • Light weight and easy to use

Greenworks produces several pieces of outdoor equipment to make your lawn look its best all year long. Their product line includes the ST40B410 G-Max 40V grass trimmer. 

Key Features

This Greenworks string trimmer is a 12-inch trimmer that works off a 40-volt lithium battery. It supplies 60 minutes of run time, which is enough to trim the grass on a half-acre lot.

It can cut a 12-inch swatch of grass and weeds with a multi-speed trigger. The line that it uses is .065-inch, and it has a dual feeder to help make quick work of the lawn. The line feed is automatic instead of needing to bump the spool.

The battery has an indicator light to let you know when it needs charging. The design of this trimmer makes it run smoothly and quietly. This trimmer only weighs 8.8 pounds. 


The list price for this Greenworks trimmer ranges from $ to about $. It is available from Amazon and on the Greenworks website. 

Where To Buy

Offline, it’s available at Tractor Supply, Walmart, and Costco. 


Greenworks offers one of the best warranties for this type of equipment as its coverage lasts for four years. There is also a two-year warranty on the lithium battery.

Black + Decker 40V Max String Trimmer/Edger 13-inch LST136W

BLACK+DECKER 20V MAX String Trimmer / Edger, 12-Inch (LSTE523)
  • Converts from trimmer to wheeled edger; Line diameter 0.065 inch
  • Power drive transmission for increased torque
  • 2 speed control for more power or extended runtime. Maximum initial battery voltage...

Long a trusted name for power tools, Black + Decker also makes a line of outdoor power tools that many people trust due to the company’s reputation, like the 40 Max string trimmer/edger.

Key Features

This string trimmer not only whacks grass and weeds from around trees, along the edge of flowerbeds, and the fence line, but it can also edge along your sidewalks or patio by merely turning the shaft of the tool and pushing a button. 

The tool can also trim a 13-inch wide path with AF-100 line that feeds automatically into the trimmer/edger. It has a variable speed trigger, and a runtime of 60 minutes when the battery is at full charge. The battery has a charge indicator light, and the trimmer only weighs 7.8 pounds. 


The list price for the Black + Decker 40V Max is under $, but it ranges in price from $ to $if you buy it with the battery.

Where To Buy

Along being for sale online at Amazon, this trimmer is available at Lowe’s, Home Depot, and Target. 


This Black + Decker product has a two-year warranty.

Troy-Bilt 25cc Two-cycle Gas String Trimmer And Edger

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Troy-Bilt produces a wide variety of power tools for outdoors like riding and push mowers, trimmers, snow blowers, and garden tillers. This 25cc two-cycle gas strimmer and edger is one of the candidates for the best string trimmer.  

Key Features

This gas trimmer not only tackles the grass a mower can’t get to, but it can also edge the lawn. The curve in the shaft not only gives the user a better view for trimming and edging, but it provides the tool with good balance for controlling it. The handle adjusts to reduce vibrations and fatigue for the operator.

The trimmer has SpringAssist, which makes starting it easier because it requires fewer pulls to start. It uses .095-inch line with a dual line bump head feeder. The two-cycle engine trimmer weighs 12 pounds, and it is also one of the widest since it can cut a 17-inch swath of grass and weeds. 


The list price on the Troy-Bilt trimmer/edger is about $.

Where To Buy

This model is available online from Amazon and Northern Tool and Equipment, or it is available at Home Depot. Lowe’s, and Ace Hardware stores.


This model has a two-year limited warranty.

Ryobi RY4CC 4-cycle 30cc Curved Shaft Gas Trimmer

Ryobi Expand-It Straight Shaft Trimmer Attachment RYSST44
  • This refurbished product is tested and certified to look and work like new. The...

Another popular name in outdoor machinery is Ryobi, and they make a four-cycle engine gas trimmer that can suit many homeowners’ needs.

Key Features

This Ryobi trimmer has a curved shaft for better control when trimming grass and weeds on the lawn. The shaft also makes it feel lighter and gives the operator better visibility while they’re using it. 

The trimmer can have attachments connected to it to save time and money when working in the yard. Instead of needing to buy another tool, the trimmer uses the expand-it line of attachments, which includes a hedge trimmer and an edger to trim bushes and neatly edge the lawn. 

It is a lightweight trimmer, weighing only 10.7 pounds and it has a 17-inch wide cutting ability. There is no need to mix gas with oil to keep the four-cycle motor running, just fill it with gas to neatly trim the lawn.


This Ryobi model sells for about $.

Where To Buy

This gas trimmer is available online at Amazon and eBay, or it is available at Home Depot.


Ryobi covers their outdoor tools, including this string trimmer, with a three-year warranty.

Motor size or Voltage  

Makita 36-Volt total

Craftsman 20 Volt

Greenworks 40 Volt

Black + Decker 40 Volt

Troy-Bilt 25cc two-cycle engine

Ryobi four-cycle 30cc engine

Powered by 

Makita two lithium-ion batteries

Craftsman lithium-ion battery

Greenworks lithium battery

Black + Decker lithium battery

Troy-Bilt Gas

Ryobi Gas

Path Size

Makita 13 3/4-inches

Craftsman 13-inches

Greenworks 12-inches

Black + Decker 13-inches

Troy-Bilt 17-inches

Ryobi 17-inches

Item Weight

Makita 11.9 pounds

Craftsman 8.5 lbs.

Greenworks 8.8 lbs.

Black + Decker 7.8 lbs.

Troy-Bilt 12 lbs.

Ryobi 10.7 lbs.

Attachment Capable




Black + Decker-No



Price ranges 




Black + Decker-$150




Makita-One-year limited warranty, 30-day return policy

Craftsman-Three-year warranty, 90-day satisfaction guarantee

Greenworks-Four-year warranty on the trimmer, Two-year warranty on the battery

Black + Decker- Two-year warranty

Troy-Bilt-Two-year limited warranty

Ryobi-Three-year warranty

Final Verdict

Man holding grass cutter on lawn

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Although each of these choices could do a good job of trimming the grass and weeds where your mower can’t reach, the Greenworks string trimmer is our pick for the best on this list. It is cordless, runs on a battery, and it has a four-year warranty with a two-year warranty on the battery.

Last update on 2021-02-08 / Affiliate links / Images from Amazon Product Advertising API

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