Greenworks String Trimmer Challenges Gas Rivals

The Greenworks Commercial Optimus String Trimmer ST161 enters the market as a battery‑powered alternative to gas‑driven equipment, delivering professional‑grade performance for crews.

Power and Cutting Speed Put It in the Pro Category

At its core, the ST161 uses a brushless motor delivering 1.6 kW of continuous power, comparable to a 36 cc gas trimmer. The cutting head spins at a constant 5,500 RPM, providing enough torque to handle dense grass, weeds, and roadside overgrowth. A 17‑inch cutting swath clears larger areas quickly, and the tool holds up to 34 feet of 0.095‑inch line.

Three speed settings and a variable‑speed trigger let operators choose between 4,500 RPM for light trimming and 5,500 RPM for demanding vegetation. Greenworks lists a runtime of up to 55 minutes with the standard 4.0 Ah battery, yet real‑world tests showed just under 30 minutes on the highest setting. The discrepancy aligns with typical manufacturer testing that often uses the lowest speed to extend battery life.

Related: Harbor Freight Bauer Vacuum Tested

Testers built a rig with three layers of Vigoro reed fencing to simulate tall, stalky growth. The ST161 averaged 7.40 seconds per pass, beating the previous leader, a Makita 40 V model that recorded 9.0 seconds, and far outpacing the slowest unit at 24.12 seconds. Vibration rated a moderate 3 on a five‑point scale, indicating some hand fatigue but not excessive.

Pricing and Value Considerations

The ST161 is sold in three configurations. The bare tool carries a price of $599.99. A kit with the standard 82 V 4.0 Ah battery costs $649.99, while a higher‑priced kit featuring the Core300 battery is $949.99. The Core300 version promises better power output and cooling, which may matter for intensive daily use.

For homeowners, the cost may be prohibitive, but for professional crews the reduced fuel and maintenance expenses could offset the upfront price over time. The trimmer’s ability to match gas‑powered performance while offering battery convenience positions it as a viable option for firms looking to transition away from gasoline engines.

Related: How to Secure a Reliable Moving Company for a Stress-Free Transition

It performs well.

Overall, the Greenworks Commercial Optimus String Trimmer ST161 delivers the power and durability expected of a professional‑grade trimmer, while its battery platform provides a compelling alternative to traditional gas models.