Why Cordless Trimmers Dominate in 2026
Battery-powered string trimmers have caught up with gas in every way that matters for homeowners. Modern 40V to 56V brushless motors deliver genuine cutting torque, 30 to 60 minutes of runtime per charge, and zero maintenance between uses. No mixing fuel, no pull-starting, no annual carburetor cleaning. For any maintained residential lawn under an acre, a quality cordless trimmer is now the smarter tool.
EGO Power+ ST1521S (56V)
$$$ PremiumEGO's 56V platform is the benchmark for cordless outdoor tools, and the ST1521S is the trimmer that earned that reputation. The 15-inch cutting swath handles thick ornamental grasses and overgrown edges without bogging down. PowerLoad eliminates the frustration of manual spool threading — just feed the line in and press a button. The split shaft stores compactly, and the 2.5Ah battery delivers consistent power throughout the discharge cycle rather than fading as it drains. IPX4 weather resistance means dewy mornings and light rain won't stop you.
Best for: Homeowners who want the best all-around cordless trimmer without compromise.
Ryobi RY40250 (40V)
$ BudgetRyobi delivers the best value in cordless trimmers at this price point. The 40V brushless motor cuts a 15-inch swath, the included 4.0Ah battery provides up to 72 minutes of runtime, and the Expand-It attachment system lets you add a hedge trimmer, edger, cultivator, or pole saw using the same powerhead. That attachment ecosystem turns a trimmer purchase into a full yard tool system. The carbon fiber shaft is lighter and more durable than aluminum alternatives.
Best for: Best value pick — especially for gardeners who want to expand into the Expand-It attachment system.
Milwaukee M18 Brushless String Trimmer
$$ Mid-RangeIf you're already invested in Milwaukee's M18 battery platform for power tools, adding their string trimmer means sharing batteries with your drill, impact driver, leaf blower, and dozens of other tools. The brushless motor delivers power equivalent to a 25cc gas engine at 6,200 RPM in high mode, and runtime reaches 50 minutes on a high-output battery. The QUIK-LOK attachment system offers compatibility with multiple attachments. Build quality is Pro-grade with a homeowner-friendly price.
Best for: Milwaukee M18 platform owners who want battery system consolidation.
Greenworks 40V 16-Inch Trimmer
$$ Mid-RangeGreenworks occupies the sweet spot between budget 20V models and premium 56V platforms. The 40V motor delivers noticeably more torque than lower-voltage options, the auto-feed line system keeps things moving without manual adjustment, and the trimmer converts to an edger with a simple rotation. Battery and charger are included, and the 40V platform is compatible with Greenworks mowers, blowers, and other tools.
Best for: Gardeners who want more power than budget trimmers without paying for premium.
WORX WG163 (20V)
$ BudgetThe WORX WG163 is the lightest full-featured trimmer on most lists at just 5.5 pounds. The 20V PowerShare battery system is compatible with other WORX tools, and the 90-degree pivoting head makes edging effortless — just tilt and go without bending. For small yards, flower bed edging, and light maintenance, it's hard to beat on weight and maneuverability. It won't power through heavy overgrowth like a 40V or 56V model, but that's not its job.
Best for: Small yards, light trimming, or anyone who prioritizes the lightest possible tool.
How to Choose by Yard Size
Small yards (under 1/4 acre): A 20V model like the WORX or Craftsman handles light trimming with ease. Medium yards (1/4 to 1/2 acre): Step up to 40V with the Ryobi or Greenworks for more power and runtime. Large yards (1/2 acre and up): The 56V EGO provides the power and battery life to finish in one session.
For more garden maintenance tools, see our Essential Garden Tools guide.