Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
Getting a sharp, clean edge between your lawn and the sidewalk is what separates a well-kept yard from a so-so one. A standard trimmer just whips the grass — an edger cuts a neat vertical line. The right string trimmer for edging switches between both jobs without any hassle, so you tackle the whole yard with one tool.
I’m Rikta — the founder and writer behind Lawn Gear Lab. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Each trimmer here has a real edging mode — either a rotating head, a wheeled guide, or a dedicated attachment — so you can stop fighting with bent-over wrist cramps and start getting crisp, professional-looking borders in minutes.
Quick Picks
- EGO MHC1603 Multi-Head Combo Kit — Pro Precision
- CRAFTSMAN V20 RP Cordless String Trimmer and Lawn Edger Kit — Best Overall
- BLACK+DECKER 20V MAX Cordless String Trimmer and Edger — Value Pack
- Greenworks 24V Cordless String Trimmer/Edger — Ultra Light
- BLACK+DECKER Weed Wacker with Auto Feed — Budget Champion
How To Choose The Best String Trimmer For Edging
The single biggest mistake buyers make is picking a trimmer that only “tilts” for edging — you have to rotate your whole wrist to get a vertical cut. Look for a model with a dedicated edging mode, a wheeled guide, or a rotating head that flips the cutting plane for you. Here is what else matters.
Edging Mechanism: Wheeled Guide vs. Rotating Head vs. Dedicated Attachment
A wheeled guide (like on the BLACK+DECKER BESTA510) rolls along the pavement so the string stays exactly at the right height — you walk, not wobble. A rotating head (Greenworks 24V) turns the whole cutting head 90 degrees with a button. A dedicated attachment (the EGO multi-head system) gives you a separate edger tool with a blade and depth wheel for the most precise cut. Each works, but wheeled guides and dedicated blades offer the most control for beginners.
Corded vs. Cordless: The Runtime Trade-Off
Corded trimmers like the BLACK+DECKER BESTA510 have unlimited runtime — you never stop because the battery died — but you drag a cord. Cordless models give you freedom of movement, but a 2.0Ah battery typically lasts around 30 minutes of trimming. If your driveway and sidewalk total a lot of linear footage, a corded unit or a model with a high-capacity battery (like the CRAFTSMAN’s 5.0Ah pack) makes more sense.
Cutting Width: 12″ vs 14″ vs 16″
You cover more edge per pass with a wider cutting width (the swath measured in inches). A 16-inch swath finishes a long sidewalk in fewer steps, but a 12-inch or 14-inch width is lighter and easier to maneuver around tight flower beds and corners. For edging, a 12-inch to 14-inch width is usually the balance because you want control, not just speed.
Quick Comparison
| Model | Best For | Cutting Width | Item Weight | Edging Type | Amazon |
|---|---|---|---|---|---|
| EGO MHC1603 | Pro-level precision & power | 16″ trimmer / 8″ edger blade | — | Dedicated carbon-fiber edger attachment | Amazon |
| CRAFTSMAN V20 RP CMCST930P1 | Extended battery run for large yards | 13″ (adjustable 11″–13″) | 9.44 lbs | Wheeled edge guide | Amazon |
| BLACK+DECKER 20V LSTE525 | Best value two-battery kit | 12″ | 5.3 lbs | Wheeled edge guide | Amazon |
| Greenworks 24V ST24B217 | Lightweight ease for all-day comfort | 12″ | 6 lbs | 90° rotating head | Amazon |
| BLACK+DECKER BESTA510 | Budget corded with unlimited run | 14″ | 6.3 lbs | Wheeled edge guide | Amazon |
In‑Depth Reviews
1. EGO MHC1603 Multi-Head Combo Kit
A multi-head powerhouse that gives you a dedicated edger with its own blade.
The EGO MHC1603 is the complete yard-care system in a box. It comes with a 56-volt power head, a 16-inch carbon fiber string trimmer attachment, and a separate 8-inch carbon fiber edger attachment with a guide wheel and depth adjustment knob for up to a 3-inch edging depth. That dedicated edger blade cuts a vertical line that a spinning string just cannot match — your sidewalk edges look straight and clean every time.
Buyers report the 4.0Ah battery lasts several hours on low speed with the edger (up to 75 minutes per the specs). The POWERLOAD technology on the trimmer attachment lets you push a button to feed new line in seconds, no disassembly. At 16 inches, the trimmer cutting width is the widest in this lineup, beating the Greenworks’ 12 inches by a notable margin. You get a 5-year tool warranty and a 3-year battery warranty, plus IPX4 weather-resistant construction for damp morning grass.
System-wide strength
- Dedicated carbon-fiber edger with depth wheel for the most precise vertical cut
- POWERLOAD auto-line feed — push a button and go
- 16″ cutting width covers more ground per pass than any other pick here
The honest catch
- Heavier than most single-head trimmers; one reviewer notes it may be uncomfortable for slight users
- Premium price reflects a premium system — overkill for a single postage-stamp yard
Who it’s for: Homeowners with a mid-to-large yard who want the absolute cleanest edges money can buy and already own (or plan to own) other EGO tools. The dedicated blade is a step above any tilting-head trick.
The one trade-off: The cost and weight are real — if you only edge a short driveway once a month, a simpler trimmer does the same job for a fraction of the price.
2. CRAFTSMAN V20 RP Cordless String Trimmer and Lawn Edger Kit (CMCST930P1)
Extended runtime meets real brushless power — no gas, no cord, no compromises.
The CRAFTSMAN V20 RP is built for the homeowner who has more than just a strip of grass to edge. Its brushless motor paired with a 5.0Ah battery delivers up to 75 minutes of runtime — owners mention using it for 45 minutes straight with no signs of power drop-off. That runtime beats the Greenworks 24V’s roughly 30-minute average by a wide margin, so you are not stopping halfway down the driveway to swap batteries.
It converts from trimmer to wheeled edger with a simple rotation, and the adjustable swath size (11 to 13 inches) lets you dial in the cutting width for tight flower beds or open sidewalks. At 9.44 pounds, it is noticeably heavier than the Greenworks’ 5.18 pounds — that extra weight comes from the larger battery and brushless motor, so you trade a bit of carry weight for a lot of runtime. One reviewer called the noise level “very low” with no vibration, making it comfortable for longer sessions.
What it delivers
- 75 minutes of runtime with the included 5.0Ah battery — many competitors run for 30 minutes or less
- Brushless motor provides extended runtime compared to brushed motors
- Weatherguard technology protects the tool from moisture and dust
Worth noting
- Weighs 9.44 lbs — significantly more than the lighter trimmers in this list
- One owner reported the bundled.065 twine was contradicted by the manual requiring.080 twine
The best for most: If you want one trimmer/edger to handle a decent-sized yard without gas fumes or dragging a cord, the CRAFTSMAN’s combination of brushless power, huge runtime, and wheeled edging makes it the smart all-around choice.
3. BLACK+DECKER 20V MAX Cordless String Trimmer and Edger (LSTE525)
Two batteries and a wheeled edging guide for a price that leaves money in your pocket.
The BLACK+DECKER LSTE525 comes with two 20V MAX batteries and a wheeled edging guide right in the box, so you can start edging immediately without buying any extras. The 2-speed control lets you boost power for thicker weeds or dial it back to extend runtime on the 12-inch cutting deck. converting from trimmer to wheeled edger takes just a twist of the shaft — no tools.
At 5.3 pounds, compared to the CRAFTSMAN’s 9.44 pounds, it is a much easier lift for carrying around the property. Customers note 20 minutes of trimming is enough for a typical suburban yard, and the second battery keeps you going while the first charges. The EasyFeed system advances line with a push button, so you never bump the head on the ground. Reviewers point out the auto-feed is consistent and the string lasts well through thick grass and weeds.
Why it stands out
- Two included batteries double your runtime without waiting for a charge
- 2-speed control: higher power for tough spots, lower speed for longer edging sessions
- At 5.3 lbs, it is easier on the arms than heavier models
Things to know
- Smaller 20V batteries drain faster — one reviewer wished for higher amp-hour packs
- Trigger mechanism may wear over time, requiring a small DIY repair on the plastic lever
Reach for this if: Your yard is small to medium and you want cordless freedom without spending up for a big battery. The double-battery kit solves the runtime anxiety of single-pack trimmers.
4. Greenworks 24V Cordless String Trimmer/Edger (Gen 2) (ST24B217)
The featherweight that rotates its head 90 degrees — no wrist twisting required.
Instead of a wheeled guide, it uses a 90-degree rotating head that pivots the string plane to vertical with a push of a button. That is especially handy for edging around tree roots or sloped terrain where a wheel might not roll cleanly.
It includes a 2.0Ah battery that shoppers say lasts about 30 to 40 minutes of real use. One reviewer noted aggressively cutting 60 feet of overgrown edges in under 10 minutes. The telescoping aluminum shaft adjusts for users from 4’8″ to 6’5″, so tall and short gardeners alike find a comfortable stance. The auto-feed.065-inch single-line system keeps you working without manual restringing — though some reviewers had mixed experiences with the spool reliability.
What you will appreciate
- 6 lbs — lightweight design with cushioned grips
- Rotating head reaches tricky angles around garden beds and tree roots
- Telescoping shaft fits a wide range of user heights
Be aware
- Some buyers report the auto-feed spool jams or fails to advance string
- 2.0Ah battery degrades faster than larger packs; a backup battery helps
Grab it for: Small yards, lighter work, and anyone who finds heavier trimmers tiring. The rotating head gives you real edging versatility without a bulky wheel.
Look elsewhere if: You need a long battery runtime — the 2.0Ah pack is best for quick edge-ups, not full-property marathons.
5. BLACK+DECKER Weed Wacker with Auto Feed, 14-Inch 2 in 1 (BESTA510)
Plug in and go — unlimited runtime with a 6.5-amp motor that does not quit.
The BLACK+DECKER BESTA510 is a corded electric trimmer, which means you never think about battery charge once. The 6.5-amp motor runs as long as the extension cord reaches, making it perfect for long driveways or sidewalks where battery trimmers would need a recharge halfway through. It is a true 2-in-1: rotate the head and the wheeled edge guide locks into position for vertical edging along borders and flower beds.
With a 14-inch cutting width, it is 2 inches wider than the Greenworks and BLACK+DECKER 20V models, so you cover more edge per pass. At 6.3 pounds, it is still lighter than the CRAFTSMAN. Buyers consistently praise its power and lightweight feel — one review notes it “outperforms battery and some electric models.” The automatic feed spool advances line without bumping, though some owners mention it feeds too fast, wasting line. The cord retention system keeps the extension cord secure, and the two-year warranty adds confidence.
Why it wins on value
- Unlimited runtime — as long as the cord reaches, the trimmer runs
- 14″ cutting width is the second-widest in this list, finishing edges faster
- Lightweight at 6.3 lbs with adjustable handle for comfort
The corded reality
- You drag a cord — not a dealbreaker for small yards, but annoying past 100 ft
- Some owners mention the auto-feed advances too quickly, wasting string
Best for the budget-minded: If your yard is close to an outlet and you want a trimmer that never stops for a battery swap, the BESTA510 delivers consistent power and a real wheeled edging guide at a price that undercuts everything else here.
skip it if: You absolutely cannot manage a cord, or your edging route takes you far from the nearest power outlet.
Understanding the Specs
Cutting Width (Inches)
This is the diameter of the circle the spinning string cuts. A wider width (like 14″ or 16″) means fewer passes to finish a sidewalk edge. A narrower width (12″) gives you more control around tight corners and flower beds. For edging along straight curbs, wider is faster; for detail work around trees, narrower is easier to guide.
Edging Mechanism: Wheel vs. Rotating Head vs. Attachment
A wheeled edge guide is a small wheel that rides along the pavement and holds the string at a perfect vertical angle — you just walk, no guesswork. A rotating head pivots the entire cutting head sideways, which works well for reaching under low bushes or edging on slopes. A dedicated edger attachment has its own metal blade and depth wheel, giving you the sharpest, straightest cut of all three. Choose based on how much precision you need and how often you edge.
Battery Amp-Hours (Ah) & Voltage
Voltage (V) determines power — 20V, 24V, and 56V are common. Higher voltage usually means more torque for cutting thick grass and weeds. Amp-hours (Ah) is the energy capacity — 2.0Ah gives about 20-30 minutes of run time, 4.0Ah roughly doubles that, and 5.0Ah can reach 45-75 minutes. If you edge a long driveway, skip the small 2.0Ah pack and go for 4.0Ah or bigger, or get a model with two batteries.
Item Weight (Pounds)
Weight matters because you are holding the trimmer out in front of you the whole time — it is not a mower you push. A 6-lb trimmer (like the Greenworks) is comfortable for 30-minute sessions with no arm burn. A 9.44-pound trimmer (CRAFTSMAN) gets you more battery and power but may feel heavy after 45 minutes. Test the weight by imagining holding it at arm’s length while walking the sidewalk.
FAQ
Can any string trimmer be used for edging?
Is a wheeled edge guide better than a rotating head for edging?
How long does a 2.0Ah battery last for edging?
What does the “cutter width” mean for edging?
Should I get a corded or cordless trimmer for edging?
Will a 20V trimmer cut thick weeds along the edge?
What is the difference between.065 and.080 trimmer line for edging?
How do I maintain a string trimmer used mainly for edging?
Is it worth paying more for a brushless motor in a trimmer?
Can I use a string trimmer edger on wet grass?
Final Thoughts: The Verdict
For most homeowners, the best CRAFTSMAN V20 RP is the best string trimmer for edging because it pairs a brushless motor with a massive 5.0Ah battery for up to 75 minutes of runtime and a wheeled edging guide that keeps the cut straight every pass. If you want the absolute cleanest professional edges and have a larger property, the EGO MHC1603 is the ultimate system with its dedicated carbon-fiber edger blade. And for the best value, the BLACK+DECKER LSTE525 gives you two batteries, a wheeled guide, and 2-speed control at a price that leaves room in your budget for other yard tools.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of July 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
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