Greenworks 40V 16-Inch Brushless String Review (2026): A Spec-Based Look

What stands out

• Brushless motor provides more torque and longer life
• 16-inch cutting swath handles tough yard work
• Dual-line bump feed head uses .095-inch line
• 2-speed selection with variable speed trigger
• Compatible with PAC458 through PAC462 attachments

Who it fits

Key Specs Explained for Greenworks

40V Voltage

This voltage rating indicates the power level of the battery system. You can use one battery across more than 75 different tools in the Greenworks lineup. This shared platform reduces the need to buy multiple separate batteries. It offers a balance of runtime and power suitable for most residential yard tasks without the weight of higher-voltage systems.

Brushless Motor

A brushless motor eliminates physical brushes, which reduces friction and wear. This design provides more torque for tough vegetation and operates more quietly than brushed alternatives. You will experience a longer motor lifespan and less maintenance. This efficiency translates to better battery usage, allowing you to complete more trimming before needing to recharge.

16 in Cutting Swath

The 16-inch width determines how much vegetation the trimmer clears in a single pass. This size is ideal for edging along sidewalks, driveways, and fence lines. It offers a wider reach than smaller 12-inch models, improving efficiency for medium-sized yards. You will spend less time overlapping passes, making the trimming process faster and more consistent.

11.3 pounds Weight

Weighing 11.3 pounds, this tool is significantly lighter than comparable gas-powered models. The reduced weight decreases user fatigue during extended trimming sessions. You can hold and maneuver the trimmer with less effort, improving control around delicate flower beds. This lightweight design makes it easier to handle for users who prefer cordless convenience without the bulk of traditional gas equipment.

Design And Build Overview

The Greenworks ST40L02 is a tool-only string trimmer with a green finish. According to the listing, it weighs 11.3 pounds and measures 65.4 inches in length, 11.8 inches in width, and 5 inches in height. The compact and lightweight design aims to provide comfort and control. This reduces fatigue during extended use compared to heavier gas-powered models.

The unit features a dual-line bump feed head with .095-inch line. This professional-grade component allows for quick reloads in seconds. You can select between two speeds using a variable speed trigger. This 2-speed selection gives you ultimate control over the cutting action. The brushless motor provides more torque and quiet operation. It also contributes to a longer life for the tool.

Maintenance is minimal, as the trimmer is virtually maintenance-free. It requires no gas, oil, or emissions handling. The tool starts instantly and operates quietly. You can attach various accessories, including an edger, hedge trimmer, polesaw, cultivator, and blower. This attachment capability makes the trimmer versatile for different yard tasks. The 16-inch cutting swath powers through tough yards. It is ideal for trimming and edging around sidewalks, driveways, flower beds, and fence lines.

Setup And Everyday Use Guide

Setting up this Greenworks 40V trimmer is straightforward because the listing specifies it is a tool-only unit. You must already own a compatible 40V lithium-ion battery to operate it. The product data confirms that one battery powers over 75 different Greenworks tools. This shared platform means you likely already have the necessary power source if you use other Greenworks equipment. Once you insert your battery, the unit is ready to start. There is no gas, oil, or emissions to manage. The listing states the trimmer starts instantly. This maintenance-free design removes the need for spark plugs or fuel mixing. You simply press the trigger to begin work. The dual-line bump feed head uses .095-inch line. You can reload the line quickly by bumping the head on the ground. This feature allows for fast string changes during trimming sessions. The variable speed trigger gives you control over the motor speed. You can adjust the power based on the thickness of the weeds or grass. The brushless motor provides quiet operation and consistent torque. This motor type also promises a longer lifespan compared to brushed alternatives. The unit weighs 11.3 pounds. This weight is 25% lighter than comparable gas-powered models. The reduced weight helps reduce fatigue during extended use. You can hold the trimmer comfortably for longer periods. The 16-inch cutting swath handles most residential trimming tasks. It is ideal for edging around sidewalks, driveways, and flower beds. If you need more versatility, the trimmer is attachment capable. You can connect compatible Greenworks attachments like an edger, hedge trimmer, or blower. This flexibility allows you to use the same battery system for multiple yard jobs. The compact design aids in maneuverability around tight spaces.

Before You Buy This Trimmer

Since this listing specifies a tool-only package, you must already own a compatible Greenworks 40V lithium-ion battery to operate it. The brand states one battery powers over 75 different tools, so verify your existing battery matches this 40V platform. This shared system reduces the need for multiple separate batteries if you already own other Greenworks equipment. You should also check if you need additional attachments. The trimmer is compatible with several options, including an edger, hedge trimmer, polesaw, cultivator, and blower. These attachments expand your yard care capabilities significantly. Upkeep is minimal, as the unit is virtually maintenance-free with no gas or oil required. It starts instantly and runs quietly. When comparing this to the 1 cordless lawn mowers on the page, note that this is a precision tool for edges and borders, not a primary mower. Use it alongside your mower for complete yard maintenance.

Check before you buy

• Verify you own a compatible 40V Greenworks battery
• Check if you need edger or blower attachments
• Confirm this tool-only unit fits your current setup
• Ensure 16-inch swath suits your yard size

The product at a glance

1

Greenworks 40V 16-Inch Brushless String Trimmer

Best for: Users with existing 40V batteries needing attachments

Voltage

40V

Cutting Swath

16 in

Power Source

battery

Motor Type

brushless

Line Feed System

bump feed

Cutting Width

16-Inch

View on Amazon: Greenworks 40V 16-Inch Brushless String Trimmer Affiliate link

This Greenworks 40V 16-inch brushless string trimmer is a tool-only unit designed for precision edging and trimming. It features a 16-inch cutting swath and a dual-line bump feed head for quick reloads. The brushless motor offers more torque and longer life. At 11.3 pounds, it is compact and lightweight, reducing fatigue during use. It is compatible with various attachments for expanded utility.

Pros

• Brushless motor provides more torque and longer life
• 16-inch cutting swath handles tough yards
• Dual-line bump feed head allows quick reloads
• Compatible with multiple Greenworks attachments
• Lightweight at 11.3 pounds for reduced fatigue

Cons

• Sold as tool only, requiring separate battery purchase
• 16-inch cutting width is narrower than some competitors
• Fixed 2-speed settings limit variable control options

Good fit if

• You already own Greenworks 40V batteries
• You need a lightweight tool for extended use
• You want to attach edger or blower accessories

Skip if

• You need a complete kit with battery included
• You prefer a wider cutting swath for large areas
• You require variable speed control beyond two settings

Verdict: Greenworks 40V 16-Inch Brushless String Trimmer is a practical choice for users who already have 40V batteries and need a lightweight, attachment-capable tool for detailed trimming and edging tasks.

Specifications side by side

Frequently asked questions

See also

• greenworks 40v 16 inch brushless string alternatives
• best greenworks string trimmers with 4 0 ah
• wugeku 16 inch 40v brushless chainsaw review
• greenworks 80v 16 in string review