For American homeowners seeking a clean, well-kept lawn without the hassle of gas engines, a battery-powered line trimmer offers quiet operation, lighter weight, and simple maintenance. The following selections showcase top-rated models designed to tackle grass, weeds, and edging with ease. Read on to compare features, performance, and what to look for when choosing a cordless string trimmer.
Quick Reference
- MZK MZK 20V 12” Cordless String Trimmer (ST12D07)
- EGO POWER+ ST1502SA 56V 15″ String Trimmer
- WORX WG163 GT3.0 20V PowerShare 12″ Edger & Weed Trimmer
- BLACK+DECKER LST300 20V MAX String Trimmer & Edger
- Greenworks 40V 12″ Cordless String Trimmer
MZK 20V 12″ Cordless String Trimmer

The MZK model features an upgraded motor delivering up to 8000 RPM for efficient cutting. It weighs 6.3 pounds and includes an ergonomic adjustable handle to reduce user fatigue. A 12-inch cutting diameter helps cover more ground per pass, and an automatic line feed eliminates manual adjustments during trimming. This package also includes two 2Ah batteries and a charger, with a complete setup for immediate use in the garden.
EGO POWER+ ST1502SA 56V String Trimmer

With a 15-inch cutting swath and a dual feed spiral line, the EGO ST1502SA delivers professional-grade performance. Its brushless motor provides longer run times and reduced vibrations, enhancing durability and comfort. The IPX4 weather resistance protects the unit in varying outdoor conditions. Quick line reload is streamlined by the Rapid-Reload head, enabling faster reloading when trimming dense vegetation.
WORX WG163 GT3.0 20V Trimmer & Edger

The WORX GT3.0 is a versatile 2-in-1 tool that converts quickly from trimmer to edger. It features an instant line feed through a push-button Command Feed spool system and includes two batteries with a charger. The head can tilt up to 90 degrees, enabling efficient trimming on slopes and along edges, while the PowerShare system allows sharing batteries across WORX tools for flexibility.
BLACK+DECKER 20V MAX LST300 Trimmer & Edger

BLACK+DECKER’s LST300 delivers 6200 RPM power via POWERDRIVE transmission, maximizing cutting string efficiency. The Automatic Feed Spool (AFS) provides line advancement without bumping, and the 2-in-1 design allows a seamless switch between trimming and edging. A lightweight build and comfortable grip help reduce fatigue during extended yard work.
Greenworks 40V 12″ Cordless String Trimmer

Greenworks equips a 12-inch dual-line cutting head with auto feed and a variable speed control for adjusting power to the task. The 40V platform provides decent run times for typical yard work, a reliable option for homeowners who want a straightforward tool with a long-term battery ecosystem. The unit combines light weight with effective trimming for lawns, sidewalks, and garden borders.
Buying Guide
Choosing a battery-powered line trimmer involves balancing power, weight, run time, compatibility, and maintenance needs. Key considerations include:
- Voltage and performance: Higher voltage generally means more cutting power. Consider models with brushless motors for longer life and smoother operation.
- Cutting width and line technology: A 12–15 inch swath covers more ground per pass. Auto-feed spools reduce interruptions during trimming.
- Weight and ergonomics: Lighter tools reduce user fatigue, especially for extended sessions. Look for adjustable handles and balanced designs.
- Battery ecosystem and runtime: If you already own a brand’s tools, a compatible battery system makes sense. Check run times per battery and whether extra batteries are included.
- Edging capability and versatility: Many models convert to edgers; ensure the mechanism is sturdy and easy to switch.
- Durability and weather resistance: Check for weather-proofing and dust resistance for longer tool life in variable conditions.
- Maintenance and service: Look for simple line-reload systems and widely available replacement spools and parts.
Depth across brands shows a few common patterns: most mid-range models pair 12–15 inch cutting paths with auto line feed, and several offer two-battery bundles for extended use. Brushless motors are common in higher-end picks for efficiency and longevity, while lighter 20V-class tools emphasize maneuverability for small to medium yards. For large properties, consider a 40V or 56V option with longer runtime and a robust line feed system. Finally, confirm compatibility with any existing battery ecosystems you own to maximize value.