Best Greenworks Cordless Weed Eater

Best Greenworks Cordless Weed Eater

ByKen

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The best Greenworks cordless weed eater depends mostly on the battery you already own, because none of the three Greenworks cordless string trimmers in the listing data includes a battery or charger. The models run on 24V, 40V and 80V platforms and differ in cutting width, weight and speed where the listing states them. This guide suits a homeowner who already has Greenworks batteries, or who is ready to buy one alongside the trimmer. The listings do not state runtime per charge, and the sources we opened do not cover how any of these models performs on thick weeds.

Quick answer

  • Already own a Greenworks 24V battery? The 24V 15-inch model is the one whose listing names that battery platform and says it works with Greenworks 24V batteries and chargers.
  • Want the widest cut? The 80V 16-inch model lists a 16-inch cutting path, a 6200 rpm speed and a 6.6-pound weight.
  • Want a power or runtime selector? The 40V 15-inch Torqdrive lists a two-speed switch for more power or longer runtime.
  • All three are tool-only. Plan on a battery and charger unless you already have them.

Greenworks cordless string trimmers compared

Model Model number Voltage (from title) Cutting width Item weight Speed Battery and charger in box Source
Greenworks 40V 15-Inch Torqdrive String Trimmer View on Amazon ST40B04 40V 15 inches 9.2 pounds 5500 rpm Not included listing
Greenworks 80V 16-Inch Cordless String Trimmer, Tool Only View on Amazon ST80L00 80V 16 inches 6.6 pounds 6200 rpm Not included listing
Greenworks 24V 15-Inch Cordless String Trimmer, Tool Only View on Amazon ST1512 24V 15 inches not stated not stated Not included listing

The table shows only figures the listings state. Not stated means the listing does not give that figure.

Greenworks 40V 15-Inch Torqdrive String Trimmer

The listing says this model has a 15-inch cutting path, a dual line .080 in. bump feed head and a variable speed trigger. It is the only 40V model in this group. The listing also describes a two-speed selector for choosing between more power and longer runtime, but it gives no runtime figure. Treat that wording as a manufacturer claim. Real runtime changes with grass, height and terrain.

The listing says the Torqdrive head provides 30% more torque. It does not name the comparison, so the figure cannot be checked against another model. Stated figures: model ST40B04, item weight 9.2 pounds, speed 5500 rpm, and item dimensions of 12.4 by 11.81 inches.

Tool only. The title says the battery and charger are not included, and the size field reads Tool Only. The listing does not name other parts in the box.

This model is in the post because it is the only 40V option here, it is the heaviest model in the group that states a weight, and it is the only one whose listing describes a power and runtime selector. For a side-by-side with another platform, read Greenworks and EGO Power+ string trimmers side by side.

View on Amazon

Greenworks 80V 16-Inch Cordless String Trimmer (Tool Only)

The listing says this trimmer has a 16-inch cutting path with a .080-inch dual line, a bump feed head, a brushless motor and a variable speed trigger. Stated figures: model ST80L00, cutting width 16 inches, speed 6200 rpm, item weight 6.6 pounds, and item dimensions of 65 by 7.5 inches.

Tool only. The listing says the battery and charger are not included. Its specifications name the string trimmer, a guard, an auxiliary handle and the operator’s manual as the included components.

The listing gives two warranty terms. One bullet says a 4-year limited warranty, and the specifications say 3 years. The listing does not settle which one applies, so confirm the term on the listing before you buy.

This model is in the post because it has the widest cutting path in the group, the highest stated speed and the lightest stated weight. Its listing also names a guard and an auxiliary handle as included parts, which the other two listings do not describe.

View on Amazon

Greenworks 24V 15-Inch Cordless String Trimmer (Tool Only)

The listing says this model has a brushless motor, a 15-inch cutting path with 0.080-inch dual twisted line, a bump feed system and a quick-load function. It says the quick-load function reloads the line in under 60 seconds. The listing calls the unit a bare tool and says it is compatible with Greenworks 24V batteries and chargers. Stated figures: model ST1512, cutting width 15 inches, and product dimensions of 59.06 by 10.83 inches. Item weight and speed are not stated.

Tool only. The title and a bullet say the battery and charger are not included. The listing also says its 3-year warranty covers both the tool and the battery, even though no battery comes in the box.

This model is in the post because its listing names a battery platform and states compatibility with Greenworks 24V batteries and chargers. If you already own a 24V battery, the listing supports this model for it. The 40V and 80V listings do not say which batteries they accept.

View on Amazon

Safety rules for these trimmers

Two risks run through the sources: debris thrown by the cutting head, and lithium-ion batteries. The Ohio State extension guide (Source 1) says that contact with rotating cutters and flying debris can cause serious injury, including cuts and lacerations. The OSHA eye and face rule (Source 3) requires employers to protect workers from flying particles. It applies to workplaces rather than homes, but it names the same hazard.

  • Clear the area first. Remove visible stones, sticks, wires and other debris before you start (Source 1).
  • Wear eye protection. Source 1 recommends safety glasses with side shields or goggles, with a face shield or screen over them for added protection. Source 4 says anyone in the same area as flying debris should wear eye protection, not only the person running the tool. Source 4 also says most sunglasses are not safety glasses.
  • Keep bystanders back. Source 1 warns that objects can be thrown from the spinning head, so keep people nearby out of the throw path.
  • Keep hands and feet away from moving parts. Source 1 says to keep the hands and feet away from moving parts and cutting blades.
  • Inspect before each use. Look for wear and damage on the unit and its attachments, and confirm that the guards are in place and not overridden (Source 1).
  • Remove the battery before you change the line or the head. Source 1 gives the shutoff rule for gas engines: shut off the engine and disconnect the spark plug wire before maintenance or changing attachments. The listings in this post give no battery equivalent. The same principle applies to a battery tool, so remove the battery before any head or line work.
  • Dispose of batteries correctly. EPA says lithium-ion batteries should not go in household trash or recycling bins. A battery that comes out of a power tool should go to a recycling location (Source 2).
  • Tape terminals and bag batteries. To prevent fires, EPA says to tape battery terminals and place each battery in a separate plastic bag (Source 2).
  • Handle damaged batteries carefully. If a lithium-ion battery is damaged, contact the battery or device manufacturer for handling information. EPA also warns that even used batteries can have enough energy to injure or start fires (Source 2).

Charge and store each battery as the manual says. Source 1 tells operators to read and follow the manufacturer provided operator’s manual before use. The sources we opened do not cover Greenworks charging or storage steps.

How we chose

The data file holds four Greenworks products and no other brand, so no other brand was added. Three of the four are single cordless string trimmers, and all three are in this post. The fourth is a Greenworks 24V 12-inch string trimmer and 270 CFM blower combo, sold with a 2.0 Ah battery and a USB-C charger. It is left out because this guide covers single trimmers, and its listing sells it as a combo kit with a blower.

The scan date in the data file is 2026-10-30. The file also records listing dates of 2026-10-11 for the 40V model, 2026-10-14 for the 24V model and 2026-10-29 for the 80V model. We opened the four sources listed below on 2026-10-30. The order follows the data file, and the list is not a ranking. Readers weighing other platforms can compare the DeWalt 20V MAX brushless weed eater and the Ryobi One Plus weed eater string posts.

What we could not verify

  • Runtime per charge. None of the three listings gives a figure, and the selector wording on the 40V model is a manufacturer claim.
  • Battery fit across platforms. Only the 24V listing names the batteries it works with, so a battery from one voltage should not be assumed to fit another.
  • Warranty term on the 80V model. The listing gives 4 years in one bullet and 3 years in its specifications.
  • The 40V torque figure. The listing says 30% more torque but does not name the comparison.
  • Noise. The listings give no decibel figure, so this post makes no claim about how loud any model is.
  • Performance on thick weeds and along edges. The sources we opened do not cover it.

What the sources do not say

  • The Ohio State guide covers handheld trimmers and brush cutters in general. Its eye protection line refers to cutting attachments, and its shutoff rule is written for gas engines. It does not describe battery string trimmers.
  • The EPA page covers disposal and handling of lithium-ion batteries. It does not give Greenworks pack ratings, charging times or storage temperatures.
  • The OSHA rule applies to employers in workplaces. It does not address home use.
  • The Mississippi State page covers eye injuries from power tools in general. It does not address string trimmers in particular.
  • None of the sources we opened is a Greenworks product or manual page, so the model figures above come from the listing data only.

Buying checklist

  • Identify the battery you already own: 24V, 40V or 80V.
  • Confirm the box contents. All three listings say the battery and charger are not included.
  • Compare cutting width: 15 inches for the 40V and 24V models, 16 inches for the 80V model.
  • Check the warranty term on the listing before you buy, especially for the 80V model.
  • Read the operator’s manual before first use, and follow it for charging and storage.

FAQ

Do any of these Greenworks trimmers come with a battery?

No. The title or bullets of all three listings say the battery and charger are not included. Plan on buying them separately unless you already own a compatible set.

Can I use a battery from one voltage on another model?

The listings do not say. Only the 24V listing names the batteries it works with. Do not assume a battery fits a different voltage, and check the operator’s manual before you try it.

Which model has the widest cutting path?

The 80V 16-inch model. The 40V and 24V models both list a 15-inch cutting path.

How long does one charge last?

None of the three listings gives a runtime per charge. Any runtime claim you read is a manufacturer claim, and real runtime changes with grass, height and terrain.

Do I need eye protection if I am only trimming near the house?

Yes. Source 1 recommends safety glasses with side shields or goggles against flying debris. Source 4 says bystanders near the work need the same protection.

What should I do with a damaged battery?

Contact the battery or device manufacturer for specific handling information. Do not put the battery in household trash or recycling bins, and take it to a recycling location instead (Source 2).

Bottom line

Match the battery you already own to the trimmer’s voltage first. If you own no battery, budget for a battery and charger before you choose between the 15-inch and 16-inch models.

Sources

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