Greenworks 40V 12-In Cordless String Trimmer - Lightweight Power

In this review of the Greenworks 40V 12-in Cordless String Trimmer the bottom line is simple: it is an excellent choice for homeowners who want gas-comparable cutting power without the fuss of fuel and maintenance. The single biggest reason to buy is its balance of performance and ease of use - the front mount motor and 12-in cut path deliver strong, controlled trimming, while the variable speed trigger and lightweight design make it approachable for weekend gardeners and first-time battery tool buyers.

Key Features

• 40V motor: Provides enough power to cut through thick grass and common weeds with performance customers describe as comparable to a gas trimmer.
• 12-in cutting path: A practical width that balances quick coverage with maneuverability around beds and fences.
• Variable speed trigger: Lets users dial in cutting speed on the go for delicate edging near plants or more power on heavy growth.
• .065 auto feed head: The auto feed head advances line quickly to minimize downtime and keep cutting smooth.
• Lightweight, ergonomic design: Reduces fatigue during longer trimming sessions and makes the tool easier to handle for beginners.
• G-MAX compatibility: Works with Greenworks G-MAX 40V batteries 29472 and 29462, allowing battery swapping across tools.

Who It's For

The Greenworks 40V 12-in trimmer is best for homeowners with small to medium yards who want cordless convenience and near-gas power without regular carburetor or oil maintenance. It suits people who value an easy-to-use tool for edges, lawn touchups and tidying beds rather than continuous commercial use.

Those who should look elsewhere include users requiring professional heavy-duty runtime on large properties, or anyone who needs an included battery and charger in the tool purchase. Battery life reports are mixed, so buyers who need long cordless runtime should plan to invest in extra G-MAX batteries.

Pros & Cons

Pros

• Strong cutting performance that handles thick grass and weeds with ease.
• Lightweight and ergonomically balanced thanks to the front mount motor.
• Variable speed trigger and auto feed head make operation simple and efficient.
• Compatible with the G-MAX 40V battery platform for tool interchangeability.

Cons

• Battery and charger are not included, so additional purchase is required for operation.
• Some users report mixed battery life and a few find the unit heavier when paired with larger batteries.

Specifications

Power	40V
Cutting path	12 in
Line	.065 in auto feed head
Operation temperature (trimmer)	6.8F (-14C) to 104F (40C)
Charger temperature range	39F (4C) to 113F (45C)
Battery included	No (compatible with G-MAX 40V models)

Our Verdict

The Greenworks 40V 12-in cordless string trimmer is a smart buy for homeowners seeking a lightweight, easy to operate trimmer with near-gas cutting power and useful features like a variable speed trigger and auto feed head. It offers strong value when paired with a G-MAX battery for routine yard maintenance, though buyers should budget for batteries if they do not already own compatible cells.

Frequently Asked Questions

Does the trimmer come with a battery and charger?
No, the battery and charger are not included; it is compatible with Greenworks G-MAX 40V batteries 29472 and 29462 and charger 29482.

How wide is the cutting path?
The trimmer has a 12 in cutting path, which balances coverage and maneuverability.

Is it good for heavy weeds?
Yes, customers report the 40V motor can handle thick grass and common weeds with performance comparable to gas for typical homeowner use.