Greenworks 40V 12in Cordless String Trimmer - Lightweight Power

In this review of the Greenworks 40V 12in Cordless String Trimmer, the bottom line is simple: this is a compact, battery-powered trimmer aimed at homeowners who want gas-like cutting power without the maintenance. The single biggest reason to buy is its blend of usable power and convenience - a 12in cutting path,.065in auto feed line, and a variable speed trigger deliver effective trimming around yards and gardens while the included 2.0Ah battery and 60 minute charger make it ready to go for most routine jobs.

Key Features

• 40V motor: Provides the torque needed to power through thick grass and many weeds for a clean cut across a small to medium yard.
• 12in cutting path: Covers a practical swath per pass to speed up edging and trimming along fences and beds.
• .065in auto feed head: Keeps line advancement quick and simple so users spend more time trimming and less time reloading line.
• Variable speed trigger: Lets the operator adjust cutting speed on the go for precision around plants and to conserve battery when full power is not necessary.
• Ultra lightweight design: Superior ergonomics reduce user fatigue for longer trimming sessions and make it easier for beginners to handle.
• Maintenance free operation: No gas, no oil, and quiet starts mean low upkeep and immediate use every time.

Who It's For

The Greenworks 40V 12in is best for homeowners with small to medium yards, new users, or anyone who prefers a lightweight, easy-to-start trimmer for regular edging, trimming around garden beds, and occasional thicker weeds. It fits well where portability and low maintenance matter more than extended run times.

It is less suited to contractors or users with very large properties who need extended heavy-duty runtime between charges; those buyers should consider higher-capacity battery systems or a dedicated gas model for prolonged continuous use.

Pros & Cons

Pros

• Delivers strong cutting performance for its class, often compared favorably to gas models for routine yard work.
• Lightweight and ergonomic, which reduces fatigue and helps beginners handle the tool comfortably.
• Convenient included 2.0Ah battery and charger that recharges in about 60 minutes for quick turnarounds.

Cons

• Battery life receives mixed feedback, so users with larger lawns may find the 2.0Ah battery limiting without a spare.

Specifications

Brand	Greenworks
Voltage	40V
Cutting path	12in
Trimmer line	.065in auto feed head
Battery	Included 2.0Ah, charges in 60 minutes
Operation temp (trimmer)	6.8F (-14C) to 104F (40C)
Operation temp (charger)	39F (4C) to 113F (45C)

Our Verdict

The Greenworks 40V 12in Cordless String Trimmer is a strong choice for homeowners who want a low-maintenance, easy-to-use trimmer that still delivers real cutting power. Its compact cutting path, auto feed line, and quick-charging 2.0Ah battery make it good value for regular yard upkeep, though buyers with large properties should plan for spare batteries for extended work.

Frequently Asked Questions

How long does the battery last on a single charge?
Battery life varies with load and speed setting; many users find it adequate for routine tasks but heavier jobs may require a second battery.

Is the trimmer hard to start or maintain?
No, it uses a push button start and is virtually maintenance free with no gas or oil to manage.

Can it handle thick weeds as well as grass?
Yes, the 40V motor and.065in line cut through thick grass and many weeds, though continuous heavy use will shorten battery life.