Gas Trimmers Give Way to New Rivals

Replacing a gas-powered string trimmer with a battery model often raises questions about power. Marketing claims can feel vague, but real-world testing provides clearer answers. After evaluating dozens of options, three models stand out as viable replacements for gas trimmers, depending on user needs and budgets. These picks balance performance, weight, and cost—key factors for both professionals and homeowners.

Testing Methodology

Assessing power involves both subjective and objective measures. Field tests simulate typical lawn care tasks, while a controlled rig offers measurable results. The rig uses three layers of Vigoro reed fencing (Home Depot item 325538), a dense material that mimics overgrown grass. Trimmers are timed cutting through 8 feet of fencing, revealing performance gaps between models.

Results from both real-world use and the rig highlight differences in cutting speed and durability. For professionals, power is a priority. For homeowners, balance between cost and capability matters more. Each model below meets specific criteria within these categories.

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Professional-Grade Option: Greenworks 82 Optimus ST161

The Greenworks 82 Optimus ST161 delivers 36cc gas-equivalent power, rivaling many gas models. Its 4.0Ah battery pack adds weight—16 pounds—but matches high-performance competitors. Priced at $599.99 bare or $649.99 with a kit, it’s designed for heavy-duty use, such as clearing thick overgrowth or dense vegetation.

Its brushless motor reduces maintenance, and the 40V system ensures consistent power output. While not the lightest, its durability makes it suitable for extended work sessions without overheating.

Homeowner-Focused: Ryobi 40V HP Brushless RY402110

Ryobi’s 40V HP Brushless RY402110 offers 30cc gas-equivalent power at a more accessible price. At $249 bare or $329 with a 4.0Ah kit, it’s ideal for homeowners tackling moderate overgrowth. Its brushless motor improves efficiency, and the ability to increase line size to 0.105 inches enhances cutting performance.

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Field tests showed it outperformed similar residential models in heavy grass. The 4.0Ah battery provides decent runtime, and the 40V system avoids the limitations of lower-voltage options.

Budget-Conscious Choice: Skil PWRCore 40 PLT1500C-10

Skil’s PWRCore 40 PLT1500C-10 offers a lighter alternative for entry-level users. Weighing 12.2 pounds with the battery, it’s more than a pound lighter than the Ryobi. Priced at $219 with a 4.0Ah kit, it’s a cost-effective option for homeowners needing basic trimming capabilities.

Its multi-head attachment system allows swapping between trimmer, edger, hedge trimmer, and pole saw. This versatility makes it a good investment for those needing multiple functions without buying separate tools.

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Maximizing Performance

Thicker trimmer line improves cutting power but reduces battery runtime. Most models include a reversible cutter, letting users switch between longer lines (for power) and shorter lines (for extended use). ECHO’s Black Diamond line, with a twisted square design, enhances cutting efficiency but requires caution around delicate surfaces like vinyl fences or painted walls.

Choosing the right line thickness and attachment system can significantly affect performance. While battery runtime is a trade-off, the benefits of faster cutting and reduced maintenance often outweigh the drawbacks for frequent users.