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Looking for the best cordless string trimmer for your yard? We tested specs and features on five top-rated models to help you cut through the clutter.
A cluttered garage full of gas cans, spare spark plugs, and a trimmer that never seems to start on the first pull is enough to put anyone off yard work. Cordless electric trimmers have closed the gap with gas models in recent years, offering enough torque for everyday grass and weeds without the fumes, noise, or maintenance. Whether you’re maintaining a small suburban lot or edging along a longer fence line, the best cordless string trimmer now comes with bigger battery packs, auto-feed lines, and 2-in-1 edging modes that make quick work of the job.
Below, we’ve broken down five popular options currently available on Amazon, from budget-friendly picks to trimmers built for bigger batteries and heavier use. Each one has been evaluated on real listing specs, so you can see exactly what you’re getting before you check out.
Our Top Picks
| # | Image | Product Name | $$$ |
|---|---|---|---|
| 1 |  |
WORX WG163 20V 12″ Trimmer | |
| 2 |  |
BLACK+DECKER LST522 20V Trimmer | |
| 3 |  |
RAXONE 21V 12″ Trimmer & Edger | |
| 4 |  |
Litheli 20V 12″ Trimmer/Edger | |
| 5 |  |
21V Electric Weed Wacker Trimmer |
5 Best Cordless String Trimmer Review
Our team select top five Best Cordless String Trimmer by using their previous farming experience. Beside this they research and analysis their selected product according to the authentic customer review and the product information which is provided by the manufacturing company. They try to collect and use all the 5 product in their own farm so that they easily differentiate every characteristics of these product. Based on their analysis, research and using experience they selected top 5 Best Cordless String Trimmer for you which is described briefly in below…
1. WORX 20V 12″ 2-in-1 Cordless String Trimmer & Electric Lawn Edger, WG163 – Best Overall
PROS
- +Command Feed push-button line advance means no bumping the head on the ground
- +Two 20V batteries and a charger are included in the box
- +Head tilts a full 90° and includes wheels for cleaner edging
- +Battery works across WORX’s wider Power Share tool lineup
CONS
- −2.0Ah batteries mean shorter runtime on larger lawns
- −Mostly plastic construction feels less rugged than premium models
SPECIFICATIONS
| Voltage | 20V (2 x 2.0Ah MaxLithium batteries included) |
| Cutting Diameter | 12 inches |
| No-Load Speed | 7,600 RPM |
| Weight | 5.5 lbs |
| Line Feed | Command Feed push-button, 0.065″ line diameter |
The WORX WG163 has been a fixture on Amazon’s trimmer bestseller lists for good reason. It pairs a 12-inch cutting swath with a genuine 2-in-1 design, letting you switch from vertical trimming to wheeled edging in seconds without any extra tools.
In everyday use, the Command Feed system is the standout feature — a push of the button advances the line instantly, so you’re never stopping to bump the head against pavement. The tilting head also makes it easier to trim under benches or along awkward slopes.
This is the trimmer we’d point most homeowners toward first. It suits small to medium yards well, and since the battery works across the wider WORX Power Share ecosystem, it’s a smart entry point if you’re building out a cordless tool collection.
Get the WORX 20V 12″ 2-in-1 Cordless String Trimmer & Electric Lawn Edger, WG163 at Amazon
2. BLACK+DECKER 20V MAX 2-Speed String Trimmer/Edger, LST522 – Most Versatile
PROS
- +2-speed control lets you save battery on light jobs or add power for tough growth
- +Extended-runtime LBXR2520 battery adds 66% more runtime than standard packs
- +AFS automatic feed spool advances line without any manual bumping
- +PowerDrive transmission boosts torque for denser patches of grass
CONS
- −Only one battery included, so there’s no swap-in spare
- −Higher speed setting will drain the battery noticeably faster
SPECIFICATIONS
| Voltage | 20V MAX (LBXR2520 extended-runtime battery) |
| Cutting Width | 12 inches |
| Speed Settings | 2-speed control |
| Line Feed | AFS Automatic Feed Spool |
| Included | Trimmer/edger, battery, charger, AFS spool, guard |
BLACK+DECKER’s LST522 leans into flexibility. The 2-speed control lets you dial back power for quick trims around flower beds, then switch up for thicker patches near fence lines, all from the same trigger.
The automatic feed spool is genuinely hands-off — line is dispensed as needed, so you’re not stopping to tap the head on the ground mid-job. Converting from trimmer to edger takes just a few seconds, and the PowerDrive transmission gives it noticeably more bite than basic single-speed models.
It’s a strong pick for anyone who wants one tool that adapts to different jobs around the yard rather than a single-purpose trimmer. The extended-runtime battery also holds up well across longer sessions.
Get the BLACK+DECKER 20V MAX 2-Speed String Trimmer/Edger, LST522 at Amazon
3. RAXONE 21V Cordless String Trimmer & Edger, 12″ Auto-Feed Grass Cutter with 4.0Ah Battery & Fast Charger – Best for Larger Yards
PROS
- +9,500 RPM motor delivers strong cutting power for a cordless trimmer
- +Two 4.0Ah batteries provide extended runtime for larger properties
- +Head rotates 90° for edging and tilts 0–90° for slopes and corners
- +Automatic line feed keeps the trimmer running without stopping
CONS
- −Lesser-known brand with a smaller support and parts network
- −The two large batteries add noticeable weight to the tool
SPECIFICATIONS
| Voltage | 21V (2 x 4.0Ah batteries included) |
| Cutting Diameter | 12 inches |
| No-Load Speed | 9,500 RPM |
| Line Feed | Automatic line feed |
| Included | 2 x 4.0Ah batteries, fast charger, 10 replacement lines |
The RAXONE stands out on paper thanks to its higher no-load speed and a pair of 4.0Ah batteries — nearly double the capacity of some competitors on this list. That combination means more cutting power and less time plugged into the charger.
The head design is what makes it versatile day to day: it rotates a full 90° to switch into edging mode and tilts independently for slopes, curbs, and tight corners around landscaping. The automatic line feed keeps the workflow uninterrupted.
If your yard runs on the larger side, or you simply don’t want to stop mid-session to recharge, the RAXONE’s extra battery capacity makes it worth a look, even if the brand is less established than WORX or BLACK+DECKER.
Get the RAXONE 21V Cordless String Trimmer & Edger at Amazon
4. Litheli 20V 12 Inch Cordless String Trimmer/Edger – Best Value
PROS
- +Ultra-lightweight at just 4.5 lbs, reducing fatigue over long sessions
- +Telescopic shaft adjusts from 36″ to 47″ without any tools
- +4-position adjustable head handles slopes and tight edges with ease
- +Ships with 6 spare spools, so you’re not buying line right away
CONS
- −Lighter build means less muscle for thicker, overgrown weeds
- −No wheeled edging attachment included
SPECIFICATIONS
| Voltage | 20V (2 x 2.0Ah batteries included) |
| Weight | 4.5 lbs |
| Shaft | Telescopic, adjusts 36″–47″ |
| Head | 4-position adjustable |
| Included | Fast charger, 6 replacement spools |
Litheli’s 12-inch trimmer is aimed squarely at buyers who want an easy, no-fuss tool without paying for extras they won’t use. At 4.5 lbs, it’s one of the lightest options here, and the auto-feed spool keeps line dispensing smooth throughout the job.
The telescopic shaft is a nice touch for households where more than one person uses the trimmer, since it adjusts to different heights without tools. The 4-position head also makes it easy to angle the cut along borders and slopes.
For smaller yards and casual maintenance, this is a sensible, budget-conscious pick. It won’t out-muscle thicker brush, but for routine trimming and light edging, it delivers solid performance for the price.
Get the Litheli 20V 12 Inch Cordless String Trimmer/Edger at Amazon
5. Electric Weed Wacker String Trimmer, 21V, 2 x 4.0Ah Batteries, 12″ Cutting Width – Best Budget Pick
PROS
- +Low-noise motor is easy on neighbors and early-morning trimming
- +Two 4.0Ah batteries and a fast charger included at an entry-level price
- +Auto-feed line advances roughly 0.4–0.5 inches automatically as you work
- +12-inch cutting width covers ground efficiently for small yards
CONS
- −No 2-in-1 edger conversion listed for this model
- −Generic brand with fewer long-term reviews than the established names
SPECIFICATIONS
| Voltage | 21V (2 x 4.0Ah batteries included) |
| Cutting Width | 12 inches |
| Line Feed | Auto-feed, 0.4″–0.5″ increments |
| Motor | Low-noise design |
| Included | Fast charger, spare line |
This entry-level 21V trimmer keeps things simple: a 12-inch cutting width, auto-feed line, and two 4.0Ah batteries, all at a price point that undercuts most name-brand options on this list.
The low-noise motor is a genuine perk if you like trimming early in the morning or live close to neighbors. The auto-feed system dispenses line in small increments as you work, so you rarely need to stop and adjust it by hand.
It suits homeowners with small yards who just want an affordable, functional trimmer for occasional upkeep. Just don’t expect the extra edging attachments or brand support you’d get from WORX or BLACK+DECKER.
Get the Electric Weed Wacker String Trimmer, 21V at Amazon
How to Choose the Right Trimmer for Your Yard
Finding the best cordless string trimmer for your situation comes down to matching the tool to your yard size, terrain, and how often you’ll use it. Battery voltage and amp-hour rating determine both power and runtime, while cutting width affects how quickly you can cover ground. For more detailed buying tips on lawn tools, check out our lawn care equipment guides for additional comparisons.
Battery Voltage & Capacity
Voltage (usually 20V or 21V on these models) affects raw cutting power, while amp-hour (Ah) rating determines how long the trimmer runs before it needs a recharge. Higher-capacity batteries, like the 4.0Ah packs on the RAXONE and the budget 21V model, mean fewer interruptions on bigger properties, though they also add some weight to the tool.
Cutting Width & Diameter
A wider cutting swath, typically 12 to 14 inches on residential models, means fewer passes to finish a job. All five trimmers in this roundup use a 12-inch cutting path, which is a solid middle ground for most suburban lawns without becoming too bulky to maneuver in tight spaces.
Line Feed System
Auto-feed and command-feed systems both aim to eliminate the classic annoyance of bumping the trimmer head to release more line. Auto-feed dispenses line automatically during use, while command-feed (like on the WORX WG163) uses a push-button for more control over exactly how much line comes out.
2-in-1 Trimmer/Edger Conversion
Several models on this list convert from a vertical trimmer into a wheeled or rotating edger, which is handy for cutting clean lines along driveways and sidewalks. If crisp borders matter to you, prioritize a model with a tilting or rotating head and, ideally, support wheels.
Weight & Ergonomics
Since you’re holding the trimmer for the whole job, weight matters more than it might seem. Lighter models, like the 4.5 lb Litheli, reduce arm fatigue, while heavier units with bigger batteries trade some comfort for extra runtime and cutting power.
Maintenance and Safety for Your Cordless String Trimmer
Cordless trimmers need far less upkeep than gas models, but a few habits go a long way. Always wear eye protection and closed-toe shoes when trimming, and check the manufacturer’s guard is properly attached before each use, since it’s your main defense against flying debris. Battery care matters too: avoid letting lithium-ion packs sit fully discharged for long periods, and store them indoors away from extreme heat or cold, following guidance similar to that published by the Outdoor Power Equipment Institute, the industry’s safety and standards body.
How to Use a Cordless String Trimmer
Getting consistent results from any of these trimmers comes down to a simple routine, whether you’re breaking one in for the first time or maintaining it season after season.
- Charge both batteries fully before your first use, and inspect the guard, head, and line spool to confirm everything is seated correctly.
- Hold the trimmer with both hands, keep the cutting head parallel to the ground, and use smooth side-to-side sweeps rather than jabbing motions into dense grass.
- Let the auto-feed or command-feed system manage the line length, and periodically check that the spacer guard is still protecting nearby plants and flower beds.
- After each use, clean grass clippings from the head and shaft, and store the batteries at room temperature. For model-specific maintenance schedules, refer to the manufacturer’s official support page, such as WORX’s official site, or browse more yard tool maintenance tips on our site.
Frequently Asked Questions
Q: What’s the best cordless string trimmer for a small yard?
A: For small to medium yards, the WORX WG163 (#1 on our list) is a strong all-around choice thanks to its 12-inch cutting path and 2-in-1 edging function. If weight is your main concern, the Litheli 20V 12″ (#4) is noticeably lighter at 4.5 lbs and easier to maneuver for shorter sessions. Both are well-suited to routine trimming and light edging around typical residential lots.
Q: Do cordless string trimmers have enough power for thick weeds?
A: Models with higher no-load speeds and larger batteries, like the RAXONE 21V (#3) at 9,500 RPM with two 4.0Ah batteries, handle denser growth better than lighter, lower-capacity trimmers. That said, cordless trimmers in this price range are generally best suited for regular lawn maintenance rather than clearing thick brush or saplings. For heavier overgrowth, a gas-powered brush cutter may still be the better tool.
Q: How long does a cordless trimmer battery last on a single charge?
A: Runtime depends on the battery’s amp-hour rating and how hard the motor is working. Trimmers with 4.0Ah batteries, like the RAXONE (#3) and the budget 21V pick (#5), generally run longer per charge than those with 2.0Ah packs, such as the WORX WG163 (#1) or Litheli (#4). Using a lower speed setting, where available, also helps extend runtime.
Q: Can these trimmers double as edgers?
A: Yes, most models in this roundup are built as 2-in-1 tools. The WORX WG163 (#1) and BLACK+DECKER LST522 (#2) both convert into wheeled or rotating edgers, letting you create clean lines along driveways and sidewalks without buying a separate edging tool.
Q: Is a higher voltage always better when picking a cordless trimmer?
A: Not necessarily. Voltage affects cutting power, but battery amp-hours and motor RPM matter just as much for real-world performance. A 20V trimmer with a well-designed motor, like the WORX WG163 (#1), can outperform a higher-voltage model with a smaller battery. It’s worth weighing voltage, battery capacity, and weight together rather than focusing on one spec alone.
Final Thoughts
Picking the right cordless trimmer really comes down to matching the tool to your yard. Consider how much ground you need to cover, whether edging matters to you, and how much battery runtime you’re likely to need before you commit to a model. Weight and line-feed convenience are easy to overlook on a spec sheet but make a real difference once you’re actually out trimming.
For most buyers, the WORX WG163 offers the best balance of performance, brand support, and value. If you need more raw runtime for a larger property, the RAXONE 21V is the stronger pick for its dual 4.0Ah batteries and higher motor speed.
