Note: This article contains affiliate links. If you click on these links and make a purchase, I may earn a small commission at no extra cost to you. This helps support my research and content. Read my full affiliate disclosure here.
Choosing the right cordless string trimmer for edging matters if you want crisp lawn borders without dragging a cord or wrestling heavy gas engines. The right tool makes short work of grass along sidewalks, driveways, and garden beds while reducing vibration and operator fatigue. This guide covers our shortlisted top picks for edging use, each chosen for practical lawnwork performance and ease of handling. We evaluated runtime, cutting accuracy, ergonomics, line feed systems, and build durability to spotlight trimmers that behave well at the lawn edge. Read on to understand the criteria we used and what features matter most when your main job is neat, repeatable edging.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | BLACK+DECKER 20V MAX 12-Inch Cordless String Trimmer and Wheeled Edger (LST522) |  |
| Best Quality Built to a higher standard if you want something more solid | WORX WG170 GT Revolution 20V 12" 3-in-1 Cordless String Trimmer |  |
| Best Value The sweet spot between price and what you get | HEYWORK 20V 12" Cordless String Trimmer with Auto Feed and Two 4.0Ah Batteries |  |
| Best Budget The cheapest option that still gets the job done reliably | HortiHub 21V Cordless Electric String Trimmer with Dual 2.0Ah Batteries |  |
| Highest Rated A top-rated pick with lots of positive feedback | ALSO GO 21V Cordless Electric Weed Wacker with 12" Cutting Swath and 2×2.0Ah Batteries |  |
| Most Popular A crowd favorite that many people choose with confidence | BLACK+DECKER 20V MAX 12" Cordless String Trimmer and Edger (LST300) |  |
| Best Seller A high-volume bestseller chosen again and again | WORX 20V 12" 2-in-1 Cordless String Trimmer & Lawn Edger (WG163) |  |
BLACK+DECKER 20V MAX 12-Inch Cordless String Trimmer and Wheeled Edger (LST522)
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Speed | Two-speed (100 rpm listed) |
| Number of Batteries | 1 Lithium Ion (included) |
This BLACK+DECKER LST522 is a small, lightweight cordless trimmer aimed at routine yard cleanup and edging. It uses the included 20V MAX extended runtime lithium battery and a two-speed PowerDrive transmission so you can choose higher torque for dense grass or lower speed to preserve battery life during longer jobs. The Automatic Feed Spool (AFS) removes the need to bump to release line, which keeps cutting continuous and simple. A quick-convert wheeled edger mode and adjustable handle/height make neat borders along driveways and sidewalks straightforward without extra tools. Practical benefits include the compact 12-inch cutting swath for maneuvering around tight beds and the included charger so it is ready to use out of the box. Limits are its modest cutting width and battery class, which make it best for small to medium yards rather than heavy professional clearing, and run time depends on the chosen speed and vegetation density. For homeowners who value an easy-to-handle, multiuse tool for weekly trimming and clean edging, this is a sensible option.
Best for: Homeowners who want a lightweight, easy-to-use trimmer that handles routine trimming and clean edging around small to medium lawns and tight spaces.
Less Ideal for: Large properties, users who need long continuous runtime for heavy brush, or professionals who require commercial-grade power and wider cutting swaths.
- Includes extended-run 20V MAX lithium battery and charger for immediate use
- Automatic Feed Spool eliminates bumping to advance line for uninterrupted trimming
- Two-speed PowerDrive gives higher torque for thick growth or lower speed for longer runtime
- Converts quickly to a wheeled edger for clean borders without separate tools
- 12-inch cutting width and consumer-grade battery limit suitability for large or heavy overgrowth
- Not intended for commercial or continuous heavy-duty clearing tasks
Verdict: A compact, easy-to-handle cordless trimmer that combines automatic line feed and a wheeled edger conversion for efficient small‑yard trimming and tidy borders.
WORX WG170 GT Revolution 20V 12" 3-in-1 Cordless String Trimmer
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Speed | 7600 rpm |
| Number of Batteries | 2 Lithium Ion batteries required. (included) |
The WORX WG170 GT Revolution is a versatile battery-powered tool that serves as a string trimmer, in-line wheeled edger, and a small-area mini-mower. It is typically used for routine yard cleanup, precision edging along sidewalks and beds, and finishing strips that a full-size mower cannot reach. Notable features include a patented Command Feed button that advances fresh line without bumping, a seven-position adjustable handle for comfortable use, and twin support wheels for steady, accurate edging. The included two 20V batteries let you work through a typical quarter-acre yard without swapping brands, and the 12-inch cutting width and 7600 rpm motor provide effective cutting for small to medium lawns. Practical benefits are reduced fatigue from the 5.5 lb weight and easier, neater edges thanks to the wheeled guide and pivoting head. Limitations are typical of compact 20V tools: the 12-inch cutting swath and 2.0Ah batteries mean it is not ideal for heavy brush or large properties and run time is shorter than higher-voltage cordless models.
Best for: Buyers who want one compact tool to handle regular trimming and precise edging around a small to medium yard and who value convenience and low fatigue over raw power.
Less Ideal for: Homeowners with large acreage, dense overgrowth, or frequent heavy-duty clearing needs should consider higher-voltage or dedicated landscaping equipment instead.
- Three-function design converts quickly between trimmer, wheeled edger, and mini-mower for versatile yard work.
- Command Feed automatic line advance speeds work by adding fresh line at the push of a button.
- Lightweight 5.5 lb body and adjustable handle reduce user fatigue during longer edging or trimming sessions.
- Includes two 20V PowerShare batteries and charger so you can finish small-to-medium lawns without buying extras.
- 12-inch cutting width and 2.0Ah batteries limit continuous run time and make it unsuitable for heavy-duty clearing.
- Not designed for thick brush or very large lawns where higher-voltage or gas models perform better.
Verdict: Choose this if you want a lightweight, multi-function trimmer that makes clean edging and quick small-area mowing easy.
HEYWORK 20V 12" Cordless String Trimmer with Auto Feed and Two 4.0Ah Batteries
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 |
| Speed | 8000 |
| Number of Batteries | 2 AAA batteries required. (included) |
The HEYWORK 20V 12" cordless string trimmer is a practical, no-frills tool for routine lawn edging and weed trimming. It uses an 8000 RPM motor and an automatic line feed system so you can switch between trimming and edging without frequent stops to reload line. The package includes two 20V 4.0Ah lithium batteries and a charger, which gives longer runtime for medium-size yards and reduces interruptions during a session. At about 6.3 pounds with an adjustable grip the trimmer is easy to maneuver for extended use and for users who want to avoid heavy equipment. It also ships with eight pre-wound replacement spools to keep maintenance simple. Limitations are that cutting width is 12 inches, so it is best for light-to-moderate vegetation rather than thick brush, and the product description lists a confusing battery entry referencing AAA cells that contradicts the included lithium packs, so check what is supplied when you receive it. For everyday homeowner trimming and tidy edging this model balances runtime, portability, and straightforward upkeep.
Best for: Ideal for homeowners who want a dependable, easy-to-use cordless trimmer for regular edging and light-to-moderate lawn maintenance and who value runtime and low fatigue.
Less Ideal for: Not the best choice for landscapers or anyone needing to clear heavy brush, very large properties, or commercial-level continuous use.
- Auto line feed keeps cutting going without frequent manual bumping
- Two 20V 4.0Ah batteries and charger extend runtime for medium yards
- Lightweight, adjustable grip reduces user fatigue during longer jobs
- Includes eight pre-wound replacement spools for easy maintenance
- 12-inch cutting width limits performance on very thick or heavy brush
- Product listing includes inconsistent battery info that may require verification on arrival
Verdict: A lightweight cordless trimmer with auto feed and two 20V 4.0Ah batteries that suits homeowners who want reliable runtime and easy edging for routine lawn care.
HortiHub 21V Cordless Electric String Trimmer with Dual 2.0Ah Batteries
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Speed | 9000 rpm |
| Number of Batteries | 2 Lithium Ion batteries (included) |
| Battery Average Life | 12 minutes |
This HortiHub cordless string trimmer is targeted at basic yard maintenance for small to medium lawns. It runs on two included 2.0Ah lithium batteries and spins the head up to 9000 RPM to tackle grass and dense weeds using a 12-inch cutting path. The trimmer is lightweight and has an adjustable handle and tool-free assembly, which makes it easy to carry, maneuver, and store. Practical features include an automatic line-feed system that reduces downtime and a safety guard plus included impact-resistant goggles for debris protection. The dual-battery setup provides around 15 to 30 minutes of combined runtime depending on how you use both batteries, so it is best for short sessions and spot trimming rather than extended heavy work. It handles edging and routine trimming well but is not intended for woody growth, thick brush, or professional heavy-duty clearing. For buyers who want a simple, low-noise, easy-to-use trimmer for regular lawn touch-ups, this model delivers good value; users needing long runtimes or commercial power should look elsewhere.
Best for: Budget-minded homeowners who need a lightweight, easy-to-use trimmer for routine lawn edging and quick touch-ups around a small yard.
Less Ideal for: Landscapers, properties with large lawns, or anyone who regularly needs long runtime and the power to cut thick brush or small saplings.
- Lightweight and ergonomic design makes trimming and edging easy for extended use
- Includes two 2.0Ah batteries and a charger so you can work without buying extras
- Automatic line-feed reduces interruptions and simplifies operation for beginners
- 12-inch cutting width covers more ground per pass compared with smaller heads
- Acoustic-dampening design keeps operating noise lower for neighborhood use
- Short battery runtime limits continuous use for larger yards
- Not suitable for woody stems, thick brush, or heavy-duty clearing
Verdict: A lightweight, low-noise cordless trimmer that gives budget-conscious homeowners a simple, ready-to-use solution for routine edging and small-yard trimming.
ALSO GO 21V Cordless Electric Weed Wacker with 12" Cutting Swath and 2×2.0Ah Batteries
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Speed | 9500 rpm |
| Number of Batteries | 2 (included) |
This ALSO GO 21V cordless weed wacker is designed for straightforward yard maintenance, combining a 9500 rpm motor, 12 inch cutting swath, and two 2.0Ah batteries to handle routine trimming and edging around a small to medium yard. It converts from trimmer to edger by rotating the head 90 degrees and allows vertical adjustment for slopes and corners, which makes precise edge work easier without switching tools. The automatic line feed advances the 1.4mm line as it wears, reducing stops to reload, and the package includes ten spare spools so you can keep going. At roughly five pounds and with an adjustable auxiliary handle, it is easy to maneuver and causes less fatigue during longer sessions. Important limitations are modest battery capacity compared with higher-end cordless models and a 12 inch cutting width that is ideal for light to moderate growth but will require more passes on very dense or overgrown areas. The unit is practical for everyday lawn upkeep where ease of use and low weight matter more than professional-level runtime or heavy-duty cutting power.
Best for: Best for seniors or anyone who prioritizes a lightweight, easy-to-handle trimmer for regular lawn maintenance and precise edging around walkways and garden beds.
Less Ideal for: Not a great choice for users who need long continuous runtime or who regularly trim very dense, overgrown brush on large properties.
- Lightweight design eases handling and reduces operator fatigue
- Includes two 2.0Ah batteries and a fast charger for quick swap-and-go use
- Automatic line feed with spare spools minimizes interruptions for reloading
- 2-in-1 trimmer and edger head plus vertical adjustment improves precision on edges and slopes
- 12 inch cutting width balances control and coverage for typical yard tasks
- Battery capacity is modest so continuous runtime may be limited on larger yards
- 12 inch cutting swath and 2.0Ah batteries are not optimal for very dense or overgrown vegetation
Verdict: A lightweight, easy-to-use cordless trimmer with automatic line feed and included batteries that makes routine trimming and edging simple for seniors and casual users.
BLACK+DECKER 20V MAX 12" Cordless String Trimmer and Edger (LST300)
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Speed | 6200 rpm |
| Number of Batteries | 1 Lithium Ion (included) |
The BLACK+DECKER LST300 is a compact, battery-powered 2-in-1 string trimmer and wheeled edger designed for routine yard maintenance and edging tasks. It uses a 20V Powerconnect lithium-ion battery (included) and a PowerDrive transmission to deliver higher torque at the cutting head, while a 12-inch cutting swath makes it easy to navigate around garden beds and sidewalks. The automatic feed spool keeps line length correct without bumping, and adjustable height plus a textured handle improves comfort for longer sessions. Because it is cordless and lightweight it starts quietly and avoids the fuss of gas tools, and the included wall-mountable charger simplifies storage. Expect solid performance on standard grass and moderate overgrowth; however the 12-inch head and single included 2.0 Ah battery limit runtime and may require slower passes or a second battery for large yards or very thick weeds. For homeowners focused on convenience and everyday trimming, this model balances ease of use with enough cutting power for typical light-to-moderate jobs.
Best for: Homeowners who want an easy-to-use, low-noise cordless trimmer for regular lawn touch-ups and clean edging around sidewalks and beds and who value simplicity and proven performance.
Less Ideal for: Those with several acres, dense brush, or frequent heavy clearing needs should look at higher-voltage cordless or gas-powered trimmers instead.
- Converts quickly between string trimmer and wheeled edger for two common tasks
- Automatic Feed Spool (AFS) keeps line fed without bumping
- PowerDrive transmission increases torque for stronger cutting at the head
- Lightweight with adjustable handle and height for comfortable use
- Includes 20V lithium-ion battery and charger so it is ready to use out of the box
- 12-inch cutting swath and single 2.0 Ah battery limit runtime and may be slow on large yards or very thick weeds
- Not suited for heavy-duty brush cutting compared with more powerful gas or higher-voltage cordless models
Verdict: A lightweight, easy-to-use 2-in-1 cordless trimmer that is ideal for everyday light-to-moderate lawn trimming and edging tasks.
WORX 20V 12" 2-in-1 Cordless String Trimmer & Lawn Edger (WG163)
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Speed | 7600 rpm |
| Number of Batteries | 2 Lithium Ion batteries required. (included) |
The WORX WG163 is a compact 2-in-1 cordless string trimmer that converts quickly to a wheel-guided edger for straight, clean borders. It uses a Command Feed spool so you only advance line when you want to, and the head tilts 90 degrees to reach slopes and tight areas. Rubberized support wheels help guide edging for consistent results and the adjustable spacer guard protects flowers and landscaping during trimming. Included with the tool are two 20V PowerShare batteries and a charger, which makes it ready to work on small to medium yards and lets you swap batteries across other WORX 20V tools. At about 5.5 pounds it is easy to maneuver and less fatiguing for longer sessions. Limitations to consider are the modest 12-inch cutting swath and single-speed motor, so it is not the fastest option for very large properties or heavy brush. The Command Feed system reduces bump-feed interruptions but you will still need to keep replacement line on hand for sustained use.
Best for: Buyers who want a lightweight, easy-to-use 2-in-1 trimmer and edger for small to medium lawns and value included batteries and proven features backed by many user reviews.
Less Ideal for: Not well suited for homeowners with large acreage, dense brush, or who need variable-speed power for heavy-duty cutting tasks.
- Converts quickly between trimmer and wheel-guided edger for two tools in one
- Command Feed spool provides on-demand line advance without bumping
- Two 20V PowerShare batteries included so you can work longer and use batteries across other WORX tools
- 90° tilting head and adjustable spacer guard improve access and protect plants
- Lightweight design eases fatigue during extended use
- 12-inch cutting width and single-speed motor limit efficiency on large yards or thick vegetation
Verdict: Choose the WORX WG163 if you want a lightweight, battery-ready 2-in-1 trimmer and edger that is easy to use and works well on small to medium lawns.
Choosing the Right Cordless String Trimmer for Edging: Key Factors to Consider
Battery Runtime and Recharge Behavior
Battery runtime determines how much edging you can complete on a single charge. For small yards a short runtime may be adequate, but medium to large lawns require longer runtime or the option to swap batteries quickly. Recharge speed matters when you cannot finish a job in one session and need predictable downtime before resuming.
Also consider how runtime is reported. Manufacturer run times often reflect light cutting with low line diameter; heavier edging against thick grass or weeds will reduce runtime. If you plan repeated edging sessions, look for batteries with built-in charge indicators and consider owning a spare cell to avoid interruptions.
Cutting Accuracy and Head Control
Edge work demands controlled cutting so you can produce a straight, clean line without gouging soil or leaving ragged grass. Trimmers that offer adjustable head angles or a dedicated edging mode help you maintain the correct cutting geometry along sidewalks and beds. The ability to slow feed or feather the spool while walking close to hard surfaces improves finish quality.
Line diameter and head speed influence how cleanly the trimmer slices grass. Thicker line cuts through dense growth but can be harder to control near hard edges. Consider how the machine feels when you tilt it into an edging position and whether the handle and motor maintain steady speed under light load.
Ergonomics, Weight, and Balance
Comfort matters for edging because you often make many short, repeated passes along borders. A well-balanced trimmer reduces wrist torque and upper-body strain. Look for adjustable handles, shoulder straps, or lightweight shafts that let you hold the head at the correct angle without contorting your posture.
Weight distribution affects how easy it is to keep the cutting line at a consistent height while walking edges. Heavy battery packs mounted high can make precise edging harder, while low-mounted batteries can improve stability. Consider the typical duration you will hold the trimmer and whether anti-vibration features are present to limit fatigue.
Line Feed System and Head Design
How the line feeds and how easy it is to replace spool or bump-feed systems matters for ongoing maintenance and uninterrupted work. Bump-feed heads offer quick line advance but can be imprecise during edging. Fixed spool or automatic feed systems can provide steadier line length for consistent edges.
Head design also affects how closely you can approach hard surfaces and how well the head resists snags. Look for guard shapes that allow visibility of the cutting line and designs that minimize debris accumulation. Ease of reloading and availability of replacement spools are practical considerations over the life of the tool.
Durability and Weather Resistance
Edging often exposes the tool to impacts with concrete and abrasive soil. Durable housing, reinforced bumpers, and hardened head components extend service life under this kind of use. Materials that resist UV and moisture help when tools are stored in a shed or used in damp conditions.
Check for sealed switches and simple protective features around the battery bay to prevent corrosion. Durable components reduce maintenance time and the need for frequent part replacement, which is especially important if you use the trimmer across multiple seasons.
When a Dedicated Edging Mode Helps
Some cordless trimmers include a dedicated edging mode or a pivoting head that locks at a right angle. That feature changes how you use the tool: instead of angling the shaft awkwardly, you set the head and walk the edge with a consistent plane of cut. For gardeners who want a uniform border without a separate manual edging tool, this can save time and improve results.
A pivoting head can also reduce fatigue because your wrist and shoulder do not have to compensate as much to hold the trimmer in an angled position. If your property has many long runs of sidewalk or driveway edge work, a trimmer with a reliable edging configuration can be worth prioritizing.
- Pivoting or lockable head for consistent angle
- Easier to maintain a straight, even line
- Reduces wrist strain during repeated passes
Choosing Line Type and Diameter for Edge Work
Line choice affects both cut quality and control. Round line is common and easy to feed or replace; twisted or serrated line cuts more aggressively and can give a crisper finish on thick turf. For edging, a mid-range diameter often strikes the best balance between clean cutting and manageable recoil.
Heavier line holds up better when you hit grit or edging stones, but it can kick back slightly more and require a more powerful motor to maintain rpm. Consider the kinds of surfaces you will work near and pick line type and diameter that match the mower and trimmer power available.
- Round line for general edging and easy feeding
- Serrated or twisted line for tougher grass
- Mid-range diameter for balance between control and durability
Maintenance Tips to Keep Edges Consistent
Regular cleaning of the guard and head prevents grass buildup that can throw off line feed and change cutting geometry. After use, clear debris from vents and the spool area and inspect the guard for nicks that could catch on pavement.
Keep a small stock of line spools and the correct replacement parts on hand so you can reload quickly. Periodically check fasteners and any pivot detents used for edging modes to ensure the head locks securely and does not drift during a cut.
- Clear debris and dry the tool before storage
- Replace worn guards and inspect line spool regularly
- Tighten fasteners that affect head angle and balance
Matching Battery Options to Yard Size
For small yards a single mid-capacity battery may be enough to finish edging in one session. Medium and larger yards benefit from higher-capacity batteries or owning a second cell to swap in when the charge runs low. If you store batteries outdoors or in a garage, avoid exposure to extreme cold or heat which degrades capacity over time.
Also note whether the platform offers flexible battery compatibility across other garden tools. A shared battery ecosystem can make it easier to maintain charge readiness without buying duplicate batteries for each tool type.
- Single mid-capacity battery for small yards
- Higher-capacity or spare battery for larger properties
- Consider platform compatibility for cross-tool battery use
Edge Techniques for Cleaner Results
Walk at a steady pace and keep the cutting line just above the edge to avoid gouging soil. Use short overlapping passes rather than trying to trim a long run in a single pass. This approach makes it easier to correct mistakes and maintain consistent height.
For tight corners and complex beds, slow down and use the trimmer with the head nearly perpendicular to the surface for precise control. Finishing touches with a hand edger or a narrow blade can refine where the trimmer cannot reach comfortably.
- Short overlapping passes for consistent height
- Slow down near corners and complex beds
- Use a hand tool for fine finishing where needed
How We Chose the Best Cordless String Trimmer for Edging
We focused on real-world edging performance rather than broad multi-purpose claims. Our selection criteria prioritized concrete specs and everyday use characteristics that affect how well a cordless string trimmer cuts and controls grass along hard edges. Key evaluation dimensions were battery runtime and recharge behavior, cutting accuracy and head control for precise edges, shaft and handle ergonomics to limit fatigue during repeated passes, and durable trimmer head designs that resist jams and allow fast line changes. We also considered build materials and weather resistance for tools stored outdoors or used in damp conditions. Products were excluded if they lacked a clear battery runtime specification, used proprietary battery platforms that severely limited cross-compatibility, or had minimal user-accessible trimming controls that make edging difficult. We favored trimmers with adjustable cutting heads or dedicated edging modes, straightforward line replacement, and balanced weight distribution. The scoring framework reflects those dimensions so gardeners can match a tool to lawn size, edge complexity, and personal handling preferences.
FAQ
How long will a typical battery last when edging?
It depends on battery capacity and grass density. Expect shorter runtime during heavy, thick edging than in light trimming. Higher-capacity batteries or a spare cell are common solutions for larger yards.
Can I use any line type for edging?
Most heads accept common line types, but the best choice depends on grass toughness and control needs. Mid-diameter line is often the best compromise for clean edges, while serrated line helps with dense growth.
Is a pivoting head necessary for good edging?
Not strictly necessary, but a pivoting or lockable edging head makes maintaining a consistent angle much easier, reducing wrist strain and improving repeatability along long edges.
How do I avoid damaging pavement while edging?
Keep the line just above the pavement surface and use short passes. Avoid forcing the head into hard surfaces and replace worn guards that can snag and cause uncontrolled contact.
Should I choose a single long battery or two smaller batteries?
For smaller yards a single longer battery simplifies use. For larger properties, two batteries let you swap without waiting for a recharge. Consider how often you tackle edging and whether you want the flexibility to continue work immediately.
Final Verdict
Prioritize cutting accuracy, comfortable ergonomics, and reliable battery runtime when choosing a cordless string trimmer for edging. The right combination depends on yard size and how often you perform border work: smaller lawns can do well with lighter, shorter-run units while larger properties benefit from longer runtime or spare batteries. Pay attention to head design and line options since those directly affect finish quality and ease of maintenance. Choose a trimmer that balances control and power for the kinds of edges you maintain, and you will save time while achieving cleaner, more consistent lawn borders.
