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Best picks
For a practical balance, start with the Ryobi 40V 12-inch String Trimmer; choose DEWALT 60V for heavier growth or WORX 20V for lighter edging and trimming.
Quick answer
The Ryobi 40V 12-inch String Trimmer suits medium yards, with an adjustable cutting path and a manufacturer-stated runtime over 65 minutes using a 4Ah battery. For tougher growth, consider DEWALT's 60V FLEXVOLT DCST970B; for a compact 20V option, look at WORX WG163.
Official manufacturer image
Best for a medium yard
Drawback: The quoted runtime is tied to the stated battery and use conditions; battery inclusion varies by listing.
Best for heavier overgrowth
Drawback: This is a tool-only listing, so battery and charger are separate.
Official manufacturer image
Best for small yards and edging
Drawback: A 20V compact model is less suited to extended heavy clearing than higher-voltage choices.
Official manufacturer image
Best for an M18 tool owner
Drawback: The product listing should be checked for its exact included battery configuration.
Best for trimming plus walk-behind edging
Drawback: The cited page is tool-only, with battery sold separately.
| Official manufacturer imageRyobi 40V 12-inch String Trimmer RY402013BTL | DEWALT DCST970B 60V MAX FLEXVOLT Brushless Cordless String Trimmer | Official manufacturer imageWORX WG163 20V 12-inch String Trimmer | Official manufacturer imageMilwaukee M18 FUEL 16-inch String Trimmer Kit 3046-21HD | Greenworks 40V 13-inch Cordless String Trimmer / Edger Gen 2 | |
|---|---|---|---|---|---|
| Battery platform | 40V | 60V MAX FLEXVOLT | 20V PowerShare | M18 | 40V |
| Cutting path | 10–12 in | 15 in | 12 in | 16 in | 13 in |
| Stated runtime | Over 65 min with 4Ah | — | — | — | — |
| Edger conversion | — | Attachment system varies by model | Yes | QUIK-LOK attachments available | Yes |
| Check price on Amazon | Check price on Amazon | Check price on Amazon |
Common questions
No. Voltage describes the battery platform, while runtime also depends on battery capacity, cutting load, line and speed setting. Compare stated runtime only when the battery and test conditions are specified.
Amp-hours describe battery capacity. Ryobi's published runtime for the RY402013BTL specifies a 4Ah battery, so results with another capacity may differ.
No. Battery compatibility is platform-specific. Match the pack to the exact manufacturer platform and tool model before buying.
It can be, but dense growth calls for a wider cutting path, suitable line and a tool designed for heavier work. DEWALT describes the DCST970B for tough overgrowth; check its manual and battery requirements.
Keep exploring
Compare battery platforms, cutting widths and line systems to shortlist a cordless trimmer for your yard.
Battery kits simplify setup, while tool-only models suit buyers who already own a matching platform.
Compare battery platform, stated swath and kit inclusions across RYOBI cordless models.
Choose a cordless strimmer around your yard, cutting tasks and battery platform. Browse dedicated trimmers, trimmer-edger combinations and practical guides.