10 Best Battery String Trimmers 2025 in the United States

The EGO Power+ ST1502SA 15-Inch 56-Volt Cordless String Trimmer is a strong contender in the battery-string-trimmers category. One of its standout features is the high battery voltage of 56 volts, which promises powerful performance. The included 2.5Ah battery capacity should provide reasonable run time for most home users, though heavy-duty users might wish for an extra battery. The 15-inch cutting swath is impressive, allowing you to cover more ground quickly, reducing trimming time. At 7.4 pounds, it sits in a manageable weight range, although some might find it a bit heavy for extended use.

The adjustable features, like the variable speed control and rapid reload head, enhance usability by providing customization depending on your specific needs and making line replacement straightforward. The dual-feed spiral twist line and brushless motor ensure efficient cutting and longer motor life, which is a significant plus. The fan-cooled charging system and included charger that supports all EGO batteries are added conveniences that help in battery maintenance and compatibility across the EGO tool range. A 50-minute full charge time is relatively quick.

However, the trimmer might feel bulky due to the split shaft design, which can make storage easier but might affect balance during use. The IPX4 weather resistance is a useful feature for outdoor work. The warranties are generous, providing peace of mind for tool and battery longevity. While it ticks many boxes for performance and convenience, it might be on the higher end of the price spectrum. This trimmer is best suited for homeowners who require a reliable and powerful tool for regular yard maintenance and appreciate the flexibility of battery-powered equipment.

The Worx String Trimmer Cordless GT3.0 is a versatile tool that functions both as a string trimmer and an edger, making it handy for various lawn care tasks. It operates on a 20V battery system and comes with two batteries, ensuring you have extended runtime. The cutting swath is 12 inches, which is decent for small to medium-sized yards. At a weight of 5.3 pounds, it is relatively lightweight and easy to handle, especially with the rubberized wheels for support and guidance.

The head tilts 90 degrees, which is useful for trimming on slopes and hard-to-reach areas, and the adjustable spacer guard helps avoid damaging your plants and ornaments. The Command Feed spool system allows for instant line feeding, which is a convenient feature, and the free spools for life offer cost savings in the long run. However, the line diameter is 0.065 inches, which might not be suitable for very tough weeds. Additionally, while it provides a no-load speed of 7600 RPM, users with larger yards or heavy-duty requirements might find the battery needing frequent recharges.

Assembly is required, which might be a minor inconvenience for some users. This trimmer is ideally suited for homeowners with small to medium-sized lawns who value versatility and ease of use.

The BLACK+DECKER 20V MAX Cordless String Trimmer (LST300) is a versatile tool that functions as both a trimmer and an edger. It operates on a 20V lithium-ion battery with a capacity of 2 Ah, which is decent for small to medium-sized yards but might require a recharge for larger areas. The cutting swath of 12 inches is standard and ensures efficient trimming along borders, sidewalks, and flower beds.

Weighing in at just 5.7 pounds, it is lightweight and easy to handle, making it suitable for users of all strengths and minimizing fatigue during extended use. The adjustable handle and height further enhance its ergonomic design, allowing for a more comfortable user experience. An automatic spool feed system eliminates the need for bumping the trimmer to release more line, adding convenience and saving time during operation.

However, the battery life might be a limiting factor for larger lawns, as it may require multiple charges to complete the task. While the tool is part of the BLACK+DECKER 20V Max Power connect System, meaning the battery is interchangeable with other tools in the system, users may need to invest in additional batteries for continuous use. The noise level is relatively low, which is a plus for those who prefer quieter garden tools. This trimmer is an excellent choice for small to medium yards, offering ease of use, versatility, and sufficient power. However, for larger properties, users might need to consider additional batteries or another model with higher battery capacity.