Best Cordless String Trimmers for Lawn Edging in 2026
Compare the best cordless string trimmers of 2026 for lawn trimming and edging, from EGO and DeWalt to Ryobi, Greenworks, and BLACK+DECKER.
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Prices and availability are accurate as of the time of publication and are subject to change.
For most yards, the EGO Power+ ST1521S is the best cordless string trimmer of 2026: it ships with a 56V battery and charger already included, and its carbon fiber split shaft holds up to edging work that would flex a lighter shaft.
The best cordless string trimmers in 2026
Gas trimmers are loud, need mixed fuel, and are hard to start after sitting in a shed all winter. Battery string trimmers solve all three problems, and the newest 40V and 56V platforms now match gas trimmers for cutting power on an average residential lawn. The EGO Power+ ST1521S is the best overall pick because it includes its 56V battery and charger in the box and uses a POWERLOAD feed system that threads new line without disassembling the head. Anyone who already owns DeWalt 20V MAX batteries is better off with the DCST922B bare tool, since it shares an existing battery pack.
At a glance
| Product | Best for | Price |
|---|---|---|
| EGO Power+ ST1521S 15-Inch String Trimmer | Best overall | View |
| DEWALT DCST922B 20V MAX 14-Inch Folding Trimmer | Best for DeWalt battery owners | View |
| RYOBI 40V String Trimmer RY40402A | Best value with battery included | View |
| Greenworks 40V Cordless 2-in-1 Trimmer Edger | Best 2-in-1 trimmer and edger | View |
| BLACK+DECKER LST300 20V MAX Trimmer/Edger | Best budget option | View |
EGO Power+ ST1521S 15-Inch String Trimmer
EGO Power+ ST1521S 15-Inch String Trimmer
The ST1521S pairs a brushless motor with a carbon fiber split shaft rated stronger than the aluminum shafts on most competing trimmers, and EGO backs it with a lifetime shaft warranty. Its POWERLOAD feed system loads new .095-inch line by feeding it into the head and pressing a button, skipping the bump-feed fumbling common on cheaper trimmers. The included 56V 2.5Ah battery and charger mean there is nothing extra to buy before first use.
Pros
- Battery and charger included in the box
- POWERLOAD line feed avoids manual bump-feed spools
- Carbon fiber shaft carries a lifetime warranty
Cons
- Heavier than some 20V trimmers due to the larger battery
- EGO batteries are not cross-compatible with other brands
DEWALT DCST922B 20V MAX 14-Inch Folding String Trimmer
DEWALT DCST922B 20V MAX 14-Inch Folding String Trimmer
Sold as a bare tool, the DCST922B is built for anyone who already owns DEWALT 20V MAX batteries from drills, saws, or other yard tools. A folding hinge shortens the shaft by about 40 percent for storage, and the QuickLoad spool system speeds up line changes. A variable-speed trigger and a Hi/Lo switch help stretch runtime on a single charge.
RYOBI 40V String Trimmer RY40402A
RYOBI 40V String Trimmer RY40402A
This RYOBI 40V trimmer ships with its 4.0Ah battery and charger, works with the wider RYOBI Expand-It attachment system, and delivers up to roughly an hour of runtime per charge depending on cutting conditions. Attachment compatibility means the same power head can later run an edger or blower attachment, spreading the cost of the battery platform across more tools.
Pros
- Battery, charger, and attachment capability all included
- Expand-It compatibility unlocks other yard tool heads
- Long runtime on a single charge
Cons
- Heavier head than compact 20V trimmers
- Attachments sold separately
Greenworks 40V Cordless 2-in-1 Trimmer Edger
Greenworks 40V Cordless 2-in-1 Trimmer Edger
This second-generation Greenworks model switches between trimming and edging with a single button and a 90-degree rotating head, so one tool covers both jobs without swapping equipment. At roughly 6 pounds with its 2.0Ah battery and charger included, it stays light enough for extended trimming sessions along fences and flower beds.
BLACK+DECKER LST300 20V MAX String Trimmer/Edger
BLACK+DECKER LST300 20V MAX String Trimmer/Edger
The LST300 covers both trimming and edging with its 2-in-1 steel deck design and an automatic feed spool that advances line without bumping the head on the ground. Its 2.0Ah battery and charger are included, and the trimmer converts between modes in seconds, making it a practical starter trimmer for small to medium yards.
How to choose a cordless string trimmer
Battery voltage is a rough guide to power, but the more useful question is whether you already own batteries on that platform, since reusing one you have with a compatible drill or blower saves real money over a tool's lifetime. Check whether the trimmer ships as a bare tool or a kit with battery and charger included, since bare tools are cheaper but only make sense if you already own compatible batteries. Attachment-capable trimmers, like the RYOBI Expand-It system, let one battery power head run multiple yard tools over time.
Prices and availability are accurate as of publication and subject to change.
FAQ
Is a 40V trimmer more powerful than a 20V trimmer?
Voltage alone does not fully determine cutting power since motor design and battery amp-hours matter too, but higher-voltage platforms generally handle thicker weeds and longer sessions better than entry-level 20V trimmers built for light touch-up work.
Can I use a string trimmer to edge a lawn?
Trimmers with a rotating head or a dedicated edging mode, such as the Greenworks and BLACK+DECKER models here, can cut a clean vertical edge along sidewalks and driveways. Trimmers without that feature can still edge, but with less precision than a dedicated edger.
How long does a battery last on a full charge?
Runtime depends on battery capacity and how thick the vegetation is, but most 2.0 to 4.0Ah batteries in these trimmers run for roughly 30 to 60 minutes of continuous trimming, which covers an average residential lawn in one charge.
Do bare tool trimmers save money?
Yes, if you already own a compatible battery and charger from the same brand's platform. Buying a bare tool avoids paying for a battery you do not need, but it is not a complete, usable trimmer on its own.
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