Kickstart a rock-solid lawn care routine with a 40V string trimmer that blends power, portability, and long-lasting batteries. The following selections emphasize reliability, easy line advancement, and versatile edging capabilities to keep lawns, sidewalks, and garden beds neat without dragging a heavy gas engine around. Each model below is built for American yards, with lightweight designs and user-friendly features that minimize fatigue while delivering consistent trimming results.
Summary of Selected 40V String Trimmers
| Product | Key Feature | Cutting Width | Battery Included |
|---|---|---|---|
| Greenworks 40V 12″ Cordless String Trimmer BST4000 | Auto feed, variable speed | 12″ | Battery Not Included |
| Black+Decker 40V MAX LST140C | 2-in-1 trimmer/edger, high-torque transmission | 13″ | Battery Included |
| Greenworks 40V 12″ Cordless String Trimmer (0.065″ dual line) | Auto feed, lightweight design | 12″ | Battery Not Included |
| RYOBI 40V 15″ Expand-It Trimmer | Attachment-ready; 13″–15″ adjustable swath | 15″ | Battery Sold Separately |
| Greenworks 40V 13″ Cordless Trimmer/Edger Gen 2 | 13″ trim/edger, 90° pivoting head | 13″ | Battery Included |
Greenworks 40V 12″ Cordless String Trimmer BST4000
The BST4000 uses a 40V battery platform with a 12-inch cutting path and a 0.065-inch dual-line head, designed for light weeds and grass around lawns and borders. Auto feed reduces manual line advancement, helping maintain uninterrupted trimming. The variable speed trigger lets users dial in power for edging or thicker growth, improving control in tight spaces.
Key considerations include battery compatibility across Greenworks 40V tools and the balance of a compact, lightweight body for extended use. The model emphasizes quick line advancement and flexible power, making it suitable for routine maintenance and edging along sidewalks or garden beds. This trimmer is a practical entry point for homeowners already invested in the Greenworks ecosystem.
Black+Decker 40V MAX String Trimmer and Edger Kit LST140C
This 2-in-1 kit switches between trimmer and edger modes with a simple conversion, offering a 13-inch cutting width on a 40V MAX Li-Ion battery system. The charger uses a jack plug, and the Power Drive high-torque transmission supports efficient cutting through stubborn weeds. The kit’s battery indicator helps monitor remaining charge for planned sessions.
From a purchasing perspective, the LST140C stands out for its all-in-one versatility and the convenience of an included battery and charger. It appeals to homeowners seeking a compact and nimble tool that handles both trimming and edging without swapping equipment. Battery life and weight distribution are typical considerations for longer trimming sessions around landscaping features.
Greenworks 40V 12-Inch Cordless String Trimmer BST4000 (UK Version Availability)
This entry mirrors the BST4000 focus on 12″ cutting width with a 0.065″ auto-feed line and a variable-speed trigger. It emphasizes operation across temperature ranges suitable for typical U.S. climates, with a design that prioritizes straightforward performance in routine yard tasks and edging. Lightweight construction supports comfortable use around shrubs and edging lines near hardscapes.
When evaluating options for a 40V platform, potential buyers should compare automation features like auto feed against manual bumping systems and assess how the tool handles edge work in tight corners or near flowerbeds. Battery life and compatibility with existing tools in the same brand family are also important factors for long-term value.
RYOBI 40V 15 in. Expand-It Cordless String Trimmer
The Expand-It line offers attachment compatibility, transforming the string trimmer into other tools with optional attachments. It features an adjustable 13″–15″ cut swath to adapt to various yard layouts, which can help optimize battery use by selecting a wider swath for open lawn areas or a narrower path for edging around beds. The 40V platform provides consistent power for moderate growth.
Buyers should consider accessory availability, ease of attachment changes, and compatibility with existing Expand-It attachments. The battery and charger are sold separately, so overall project cost includes those items if not already owned. The 15″ swath option helps balance runtime with cutting speed in larger border zones.
Greenworks 40V 13″ Cordless String Trimmer/Edger Gen 2
This Gen 2 model integrates a 13-inch trimming width with a 13″ edger capability, powered by a 40V lithium-ion pack. A 90-degree pivoting head makes it possible to transition from trimming to edging smoothly, improving border definition along driveways and sidewalks. The dual-mode functionality is designed for efficient yard maintenance in a single tool, reducing the need for multiple devices.
Considerations for this model include the practicality of frequent mode switching, the ergonomics of the pivoting head, and battery compatibility across Greenworks 40V tools. The Gen 2 design generally provides a balanced weight distribution and improved control for users who alternate between edging and trimming tasks during a session.
Buying Guide: Key Purchase Considerations For 40V String Trimmers
- Power and cutting width: Assess whether you need a narrow 12″ path for precision edging or a wider 13″–15″ path for faster lawn maintenance. A higher voltage and wider swath can reduce run time if you tackle thick weeds, but also add weight.
- Line feed system: Auto-feed heads minimize interruptions, while bump-feed designs may require manual effort but can be lighter. Consider how the head type fits your typical trimming routine.
- Edging capability: Many 40V tools convert to edgers. If edging is a priority, look for a tool with a 90° pivoting head or quick conversion feature, and test how comfortable it is to switch modes.
- Battery and charger inclusion: Some bundles include batteries and chargers, others do not. If you own multiple tools in a brand ecosystem, choosing a kit can maximize value and ensure compatibility across devices.
- Weight and ergonomics: Lighter models reduce fatigue during longer sessions. Look for padded grips, balanced centers of gravity, and good shoulder comfort for extended trims.
- Maintenance and warranty: A longer warranty and user-replaceable parts like line spools and blades reduce long-term ownership costs. Check for corrosion resistance and customer support quality.
- Compatibility and ecosystem: If you already own tools from a specific brand, confirm battery compatibility to avoid redundant purchases. Brand ecosystems often share batteries, which can simplify inventory management.
- Price-to-performance balance: Compare cutting width, speed controls, and attachment options with price. A slightly higher upfront cost can pay off through longer-term versatility and fewer replacements.
- Safety considerations: Ensure you have proper eye protection and follow cord management or battery safety guidelines. A comfortable, stable grip helps maintain control on slopes or near landscaping.
Overall, choosing a 40V string trimmer involves balancing power with portability, especially for typical American yards. Consider how often you edge, the size of your lawn, and whether you prefer a 2-in-1 tool with edging capability or a modular setup with attachments. Evaluating battery readiness across your tools helps maximize long-term value and readiness for seasonal yard tasks.