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40V 17" Cordless Battery String Trimmer w/ 8.0 Ah Battery & Charger

SKU 2132102 | MODEL# ST40L810
Sale price
$ 299 .99

  • Miles can Trim: 3 miles
  • Runtime: Up to 80 minutes (w/ included battery)
  • Battery Recharge Time: 96 minutes w/ included charger
  • Weight: 7.1lbs wo/ battery
  • Line Feed Type: LOAD N' GO™ Bump Feed
  • Warranty: 3-year tool and battery limited warranty
  • Power 75+ Tools with any Greenworks 40V Battery
  • What's Included: (1)8.0 Ah Battery and Charger
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40V 17" Cordless Battery String Trimmer w/ 8.0 Ah Battery & Charger
Key Features Get answers to all the questions you might have in your mind for this product
40V 17" Cordless Battery String Trimmer w/ 8.0 Ah Battery & Charger
  • 17" cut path with 0.105" dual line Bump feed head.
  • Highly efficient brushless motor provides more torque, quiet operation, and longer life.
  • Variable speed trigger for power when you need it.
  • Ergonomic design for superior balanced.
  • Adjustable auxiliary handle for added comfort.
  • Removable battery powers over 75 Greenworks 40-Volt tools.
Specifications & Guides Find specifications as well as additional supporting information about our product
Battery Type Lithium-ion
Cutting Path 17-inch
Guard Aluminum Shaft
Feed Type Bump
Trigger Variable Speed
Max Runtime 80mins
Brushless Motor Intelligent
Auxiliary Handle Adjustable

Product Specifications

Voltage 40V
Product Warranty 3 Years
Battery Warranty 3 Years
Package Dimensions 36.4"Lx9.9"Wx7.5"H
Product Weight 7.1lbs
Max Line Diameter .105"
How to video

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Additional Details More information about this product

Experience the next generation of power

Cordless outdoor power tools are ideal for homeowners like you who are simplifying and focusing on what's essential to getting the most out of life. The Greenworks 40V family of tools are built with medium weight construction and high-efficiency motors. The Greenworks 40V lithium-ion platform powers 75+ outdoor products, including lawn mowers, blowers, string trimmers, chainsaws, hedge trimmers, and much more! The 40V lithium-ion battery provides the power you need, and delivers fade-free power with no memory loss after charging. The Greenworks 40V platform comes with a 3 year tool / battery warranty to protect your investment. Of high-quality manufacturing, these products are easy to start and lighter weight than the gas products you're used to, making your day of yard work a whole lot easier. Greenworks 40V tools are lightweight, start instantly, and require virtually no maintenance - no gas, no oil, no mess - but still deliver gas-like power.

Key features

  • 17" cut path with 0.105" dual line Bump feed head
  • Highly efficient brushless motor provides more torque, quiet operation, and longer life
  • Variable speed trigger for power when you need it
  • Ergonomic design for superior balanced
  • Adjustable auxiliary handle for added comfort
  • Includes one 40V 8.0 Ah battery and charger

*Run-time varies based on grass condition and operator technique

 

The No List

No Gas Smell. 

No Emissions. 

No Maintenance. 

Low Noise. 

What's Included Everything that comes with this product
  • (1) 40V Cordless 17" String Trimmer
  • (1) 8.0 Ah Battery
  • (1) Battery Charger
  • (1) Owner's Manual
Help & FAQ Answers to the most frequently asked questions

What is the difference between auto-feed and bump and feed string trimmers? faq-icon

Auto-feed string trimmers use centrifugal force to release trimmer line. Each time the unit is activated, the spinning of the trimmer head exerts a force that unlocks the trimmer spool, allowing line to be released. A spring-loaded mechanism relocks the line after approximately 0.25” of line has been release. Therefore, every trigger pull will release line. Bump feed/ bump and feed string trimmers work with a similar mechanism, but the spool lock is manual disengaged by the user by “bumping” the trimmer head on the ground while the unit is in use. This mechanism provides operators with more control over how much line is used.

What attachments are compatible with my string trimmer? faq-icon

For attachment capable string trimmers, the following brands are compatible: Poulan Pro, Ryobi-Expand-it and Trimmer plus. If you are unsure if you have an attachment capable string trimmer unit, please contact us at 1-888-90-WORKS

Why does my trimmer line keep breaking during use? faq-icon

Trimmer line will break off during use which is a normal occurrence. In harsher terrain or when used to edge, the string trimmer's line will break off more often as it makes contact with hard surfaces. To reduce line breakage here are some tips: • Keep the underside of the trimmer head/guard area clean of debris. • Ensure that the cutting blade is clean/clear, and the blade is exposed and shard enough to trim the line. This will also help to reduce excessive line breakage. • Avoid direct contact with hard surface areas when using the string trimmer. • In thicker, denser, and longer grass, you may want to go slower. Listen to the sound of the string trimmer, if it reduces speeds, or slows down too much, back away from the grass and start again at a slower pace.

Can I remove the guard from my string trimmer? faq-icon

No, string trimmers should never be operated without a guard. The guard is a safety feature and helps reduce debris such as grass clippings from being picked up and flung towards the user. It also has a cutting bar on it to prevent line from overextending and breaking off at large lengths. Operating without a guard will cause the string trimmer to work harder than it must and will reduce the life span of the motor. It will also void the warranty.

Why does my line keep unraveling? faq-icon

Line unraveling can be caused by winding the spool line the wrong way or simply not winding it tight enough. Please make sure you follow the guide inside your owner’s manual thoroughly as this process may take some time to correctly achieve.

What does reduced gear mean for my string trimmer? faq-icon

A string trimmer that has a reduced gear motor does not directly drive the trimmer head. Instead, the motor drives a larger gear that is attached to the trimmer head. This reduces the speed of rotation but increases the torque. It allows a smaller, lighter motor to produce extra torque and perform tasks more efficiently, while ensuring that the unit is easy to maneuver.

Does my unit come with trimmer line? faq-icon

Yes, all Greenworks string trimmers come with spool and line that has already been installed in your unit.

Can I use a thicker diameter line than what is recommended? faq-icon

No, we do not advise using a thicker diameter line than what is advised in your owner’s manual. The use of a thicker line may result in over working the motor and could potentially damage the motor resulting in shorter life span of the unit. This will also void your warranty.

Can I buy replacement line locally? faq-icon

Yes, you can use any generic brand of trimmer line to rewind your existing spool. Please refer to your owner’s manual to ensure you purchase the correct diameter of line for your unit.

Can I change the original trimmer head? faq-icon

No, we do not offer this feature currently. However, we do offer attachment capable string trimmer units that can be used with a variety of different attachments from the following brands: Poulan Pro, Ryobi Expand-It and Trimmer Plus.
About Greenworks See how Greenworks is always making life better
20+ Years of Battery-First Innovation.

We’ve been pioneers of battery-powered outdoor tools since 2002, designing smarter tools with battery technology at their core to get work done faster.

#1 Battery Brand for Commercial Landscapers.

Trusted by professionals worldwide for performance, durability, and reliability, our tools are built to handle real-world all-day work.

Power That Replaces Gas Without the Hassle.

Sustainable technology delivers more power, longer runtimes, and zero gas, fumes, or engine maintenance, saving you time, money, and trouble.

One Battery. Endless Possibilities.

Choose the right voltage platform for your needs and share batteries across hundreds of tools in the yard, garage, jobsite, and beyond.

Smartly Designed. Built to Last.

Designed and engineered in-house for cleaner, quieter, smarter performance, with purpose-driven features that fit seamlessly into everyday life.

Proven Across 500+ Tools and Applications.

From maintaining your backyard to powering large jobsites, our battery expertise scales across 500+ professional and consumer tools built for real-world use.

Key Features
  • 17" cut path with 0.105" dual line Bump feed head.
  • Highly efficient brushless motor provides more torque, quiet operation, and longer life.
  • Variable speed trigger for power when you need it.
  • Ergonomic design for superior balanced.
  • Adjustable auxiliary handle for added comfort.
  • Removable battery powers over 75 Greenworks 40-Volt tools.
40V 17" Cordless Battery String Trimmer w/ 8.0 Ah Battery & Charger
Specifications & Guides
Battery Type Lithium-ion
Cutting Path 17-inch
Guard Aluminum Shaft
Feed Type Bump
Trigger Variable Speed
Max Runtime 80mins
Brushless Motor Intelligent
Auxiliary Handle Adjustable

Product Specifications

Voltage 40V
Product Warranty 3 Years
Battery Warranty 3 Years
Package Dimensions 36.4"Lx9.9"Wx7.5"H
Product Weight 7.1lbs
Max Line Diameter .105"
How to video

Loading title...

How to video

Loading title...

Additional Details

Experience the next generation of power

Cordless outdoor power tools are ideal for homeowners like you who are simplifying and focusing on what's essential to getting the most out of life. The Greenworks 40V family of tools are built with medium weight construction and high-efficiency motors. The Greenworks 40V lithium-ion platform powers 75+ outdoor products, including lawn mowers, blowers, string trimmers, chainsaws, hedge trimmers, and much more! The 40V lithium-ion battery provides the power you need, and delivers fade-free power with no memory loss after charging. The Greenworks 40V platform comes with a 3 year tool / battery warranty to protect your investment. Of high-quality manufacturing, these products are easy to start and lighter weight than the gas products you're used to, making your day of yard work a whole lot easier. Greenworks 40V tools are lightweight, start instantly, and require virtually no maintenance - no gas, no oil, no mess - but still deliver gas-like power.

Key features

  • 17" cut path with 0.105" dual line Bump feed head
  • Highly efficient brushless motor provides more torque, quiet operation, and longer life
  • Variable speed trigger for power when you need it
  • Ergonomic design for superior balanced
  • Adjustable auxiliary handle for added comfort
  • Includes one 40V 8.0 Ah battery and charger

*Run-time varies based on grass condition and operator technique

 

The No List

No Gas Smell. 

No Emissions. 

No Maintenance. 

Low Noise. 

What's Included
  • (1) 40V Cordless 17" String Trimmer
  • (1) 8.0 Ah Battery
  • (1) Battery Charger
  • (1) Owner's Manual
Help & FAQ

What is the difference between auto-feed and bump and feed string trimmers? faq-icon

Auto-feed string trimmers use centrifugal force to release trimmer line. Each time the unit is activated, the spinning of the trimmer head exerts a force that unlocks the trimmer spool, allowing line to be released. A spring-loaded mechanism relocks the line after approximately 0.25” of line has been release. Therefore, every trigger pull will release line. Bump feed/ bump and feed string trimmers work with a similar mechanism, but the spool lock is manual disengaged by the user by “bumping” the trimmer head on the ground while the unit is in use. This mechanism provides operators with more control over how much line is used.

What attachments are compatible with my string trimmer? faq-icon

For attachment capable string trimmers, the following brands are compatible: Poulan Pro, Ryobi-Expand-it and Trimmer plus. If you are unsure if you have an attachment capable string trimmer unit, please contact us at 1-888-90-WORKS

Why does my trimmer line keep breaking during use? faq-icon

Trimmer line will break off during use which is a normal occurrence. In harsher terrain or when used to edge, the string trimmer's line will break off more often as it makes contact with hard surfaces. To reduce line breakage here are some tips: • Keep the underside of the trimmer head/guard area clean of debris. • Ensure that the cutting blade is clean/clear, and the blade is exposed and shard enough to trim the line. This will also help to reduce excessive line breakage. • Avoid direct contact with hard surface areas when using the string trimmer. • In thicker, denser, and longer grass, you may want to go slower. Listen to the sound of the string trimmer, if it reduces speeds, or slows down too much, back away from the grass and start again at a slower pace.

Can I remove the guard from my string trimmer? faq-icon

No, string trimmers should never be operated without a guard. The guard is a safety feature and helps reduce debris such as grass clippings from being picked up and flung towards the user. It also has a cutting bar on it to prevent line from overextending and breaking off at large lengths. Operating without a guard will cause the string trimmer to work harder than it must and will reduce the life span of the motor. It will also void the warranty.

Why does my line keep unraveling? faq-icon

Line unraveling can be caused by winding the spool line the wrong way or simply not winding it tight enough. Please make sure you follow the guide inside your owner’s manual thoroughly as this process may take some time to correctly achieve.

What does reduced gear mean for my string trimmer? faq-icon

A string trimmer that has a reduced gear motor does not directly drive the trimmer head. Instead, the motor drives a larger gear that is attached to the trimmer head. This reduces the speed of rotation but increases the torque. It allows a smaller, lighter motor to produce extra torque and perform tasks more efficiently, while ensuring that the unit is easy to maneuver.

Does my unit come with trimmer line? faq-icon

Yes, all Greenworks string trimmers come with spool and line that has already been installed in your unit.

Can I use a thicker diameter line than what is recommended? faq-icon

No, we do not advise using a thicker diameter line than what is advised in your owner’s manual. The use of a thicker line may result in over working the motor and could potentially damage the motor resulting in shorter life span of the unit. This will also void your warranty.

Can I buy replacement line locally? faq-icon

Yes, you can use any generic brand of trimmer line to rewind your existing spool. Please refer to your owner’s manual to ensure you purchase the correct diameter of line for your unit.

Can I change the original trimmer head? faq-icon

No, we do not offer this feature currently. However, we do offer attachment capable string trimmer units that can be used with a variety of different attachments from the following brands: Poulan Pro, Ryobi Expand-It and Trimmer Plus.
About Greenworks
20+ Years of Battery-First Innovation.

We’ve been pioneers of battery-powered outdoor tools since 2002, designing smarter tools with battery technology at their core to get work done faster.

#1 Battery Brand for Commercial Landscapers.

Trusted by professionals worldwide for performance, durability, and reliability, our tools are built to handle real-world all-day work.

Power That Replaces Gas Without the Hassle.

Sustainable technology delivers more power, longer runtimes, and zero gas, fumes, or engine maintenance, saving you time, money, and trouble.

One Battery. Endless Possibilities.

Choose the right voltage platform for your needs and share batteries across hundreds of tools in the yard, garage, jobsite, and beyond.

Smartly Designed. Built to Last.

Designed and engineered in-house for cleaner, quieter, smarter performance, with purpose-driven features that fit seamlessly into everyday life.

Proven Across 500+ Tools and Applications.

From maintaining your backyard to powering large jobsites, our battery expertise scales across 500+ professional and consumer tools built for real-world use.

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