Best Lawn Edger String Trimmers for Clean Edges
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A lawn edger string trimmer does two jobs: it cuts grass and weeds along fences and beds, and it converts to an edger that cuts a clean line along walkways, driveways and garden borders. This roundup compares eight cordless and corded models from our product data, using only the specs and features each listing states. Where a listing gives two different numbers, this page shows both and says so.
Quick answer
- Pick a 2-in-1 trimmer and edger if you want one tool for both jobs. The WORX WG163 and the BLACK+DECKER BESTA510 are the clearest 2-in-1 listings in this group.
- Pick a tool-only model if you already own a battery platform. The WORX WG163.9, WORX WG170.9 and Bosch GRT18V-40N are sold without a battery in the listings.
- Pick a corded model only if an outlet is close to the lawn. The BLACK+DECKER BESTA510 is listed as corded electric.
- Check cutting width first. The listed widths here run from 8 inches to 16 inches.
How to choose a lawn edger string trimmer
Start with the edger function. A trimmer with a wheeled edge guide gives a straighter line along a sidewalk than a trimmer used freehand. Several listings in this group use a wheel set that supports the tool on the lawn side of the border. Others add a head that tilts, so the cutting line can reach under a step or along a slope. Check whether the listing shows the head tilt angle, because that decides how close you can cut to a wall.
Next, look at battery setup. A tool-only listing needs a battery and charger from the same platform, and the listing will say so. A kit listing includes one or two packs and a charger. Compare the battery count and the pack size as written. A 2.0Ah pack and a 4.0Ah pack give different runtimes, and the listings do not always state minutes in the same way.
Then consider shaft length and weight. The shaft range decides how far you bend over, and the weight decides how long you can work comfortably. The lightest model here is listed at 3.28 pounds, and the heaviest is the 16-inch Bosch at 12.7 pounds tool only. Pick the balance that matches your arm strength and the size of your yard.
Comparison at a glance
The table uses the listed specs. “Not stated” means the listing does not give the value.
| Model (listing) | Type | Cutting width | Speed | Battery | Weight as stated |
|---|---|---|---|---|---|
| WORX WG163 | 20V 2-in-1 trimmer and edger | 12 in | 7,600 rpm | Two 20V packs and charger included | 5.5 lb |
| BLACK+DECKER BESTA510 | Corded 2-in-1 trimmer and edger | 14 in | 8,000 rpm | Corded electric | 6.3 lb |
| WORX WG163.9 | 20V 2-in-1 trimmer and edger, tool only | 12 in | 7,600 rpm | Not included | 4.6 lb |
| WORX WG170.9 | 20V 3-in-1 trimmer, edger and mini mower, tool only | 12 in | 7,600 rpm | Not included | 4.6 lb |
| Bosch GRT18V-40N | 18V 16-inch trimmer and edger, bare tool | 16 in | 5,300 rpm | Not included | 12.7 lb |
| Glenvera YD2505 | 20V 2-in-1 trimmer and edger | 12 in in spec; 16-inch swath in bullets | 9,000 rpm (bullet) | Two 20V 4.0Ah packs and charger | 6 lb |
| Ohey ST-01 | Cordless 4-in-1 trimmer and edger | 11 in | 20,000 rpm | Two packs, 6000mAh total (bullet) | Not stated |
| Liupoket L25-01 | Cordless 3-in-1 with wheels | 8 in | 20,000 rpm | Two 2000mAh packs and charger | 3.28 lb (bullet) |
WORX WG163: the 2-in-1 with a battery kit
The WORX WG163 is the clearest kit in this group for buyers who want to start with one tool. The listing says it converts from a string trimmer to an edger in seconds, with a 90-degree tilting head for slopes and hard-to-reach spots. It has an instant line feed through a push-button command feed spool, and the listing says the spools are free for life. The package includes two 20V MAX lithium batteries and a charger, so no extra pack is needed to start.
The listing gives 7,600 rpm and a 12-inch cutting diameter. The spec field gives a machine weight of 5.5 pounds and a 10-inch cutting line length with a 0.065-inch line diameter. The spacer guard is adjustable, which helps protect plants and lawn ornaments. The listing also says the same battery works on other WORX 20V and 40V tools in the PowerShare family, which matters if you plan to add a leaf blower or a mower later.
BLACK+DECKER BESTA510: the corded 2-in-1
The BLACK+DECKER BESTA510 is the only corded trimmer in this group. The listing gives a 14-inch cut path and an 8,000 rpm speed, and the title describes a 6.5-amp motor. It includes an automatic feed spool that avoids bumping the head on the ground to release line. The POWERDRIVE transmission is described as keeping power steady in thick weeds, and a cord retention system is listed to stop accidental disconnection at the outlet.
The spec field gives a weight of 6.3 pounds and lists a 2-year limited warranty. The item includes an AF-100 spool, an auxiliary handle and a guard. Because the power source is a cord, the lawn must be within reach of an outdoor outlet or an extension cord rated for outdoor use. Check the listing for the cord length before you buy, since the listing does not state it in the fields listed.
WORX WG163.9: the tool-only version
The WORX WG163.9 is the same 12-inch 2-in-1 trimmer and edger in a tool-only listing. The title and item highlights say the battery and charger are not included. The bullets describe the command feed spool for instant line feeding, a rubberized twin wheel set for the edger, and a telescopic shaft that adjusts to the user’s height. The spec field gives a weight of 4.6 pounds and a speed of 7,600 rpm.
This listing suits a buyer who already owns a 20V WORX battery. If you do not, the kit listing above is the better comparison, since this tool needs a pack before it runs. The listing gives its included components as the trimmer only, so plan to buy a pack and charger separately.
WORX WG170.9: 3-in-1 with a mini mower option
The WORX WG170.9 goes a step further. The listing says it transforms from a string trimmer into an in-line wheeled edger, and into a mini mower. The head offers six rotating settings and the shaft has seven handle adjustments. The listing gives a motor speed of 7,600 rpm and a 12-inch cut. It includes three trimmer spools of 10 feet each, a spool holder, edger wheels, a safety guard and a flower guard.
The battery and charger are sold separately. The listing says the same battery works across more than 75 PowerShare tools. The spec field gives a weight of 4.6 pounds. This is the most flexible item in the WORX line here, because the head changes role, but the mini mower use is a secondary function, not a full mower. For a yard that needs a dedicated mower, a standard mower is the better choice.
Bosch GRT18V-40N: the 16-inch heavy-duty option
The Bosch GRT18V-40N is the widest cut in this roundup, at 16 inches according to its specs and bullets. It runs on the Bosch 18V platform, and the bullets say the batteries and chargers are compatible with other AMPShare brands. The listing gives a maximum speed of 5,300 rpm and a variable-speed trigger for precise control. The Pro-Tap spool with EasyWind is described as allowing fast reloading without removing the head.
The listing also describes an anti-tangle system and a toolless adjustable D-handle that switches between trimming and edging. The spec field gives a weight of 12.7 pounds, which is heavy compared with the 20V models here. The item is a bare tool, so the battery and charger are sold separately. The listing gives a five-year limited warranty for Bosch 18V tools, with details by phone. Choose this model if you have a Bosch battery already and need the widest cut.
Glenvera YD2505: two packs and a charger
The Glenvera YD2505 includes two 20V 4.0Ah batteries and a charger, which is a full setup in one box. The bullets say the batteries give up to 60 minutes of runtime and cover up to a quarter acre on one charge. The listing describes an automatic line feed system, a 4-position adjustable head and a 180-degree rotating handle. It switches between trimming and edging modes with a button.
The listing gives an inconsistency that you should check before you buy. The spec field lists a 12-inch cutting width, while the bullets describe a 16-inch cutting swath. The spec field also gives a weight of 6 pounds and includes eight spool lines in the item highlight. The listing does not state a warranty in the fields listed.
Ohey ST-01: the 4-in-1 with a long shaft
The Ohey ST-01 is a 4-in-1 trimmer that the listing describes as a trimmer, brush cutter, edger and grass cutter. Its telescopic shaft adjusts from 43 to 55 inches, which the listing gives as a range that suits taller and shorter users. The head adjusts from 0 to 90 degrees, and the bullets describe a detachable wheel system that reduces arm and shoulder fatigue.
The listing gives a 20,000 rpm speed and an 11-inch cutting width when fitted with the edging wheel and guard. It also gives a maximum width of 7 to 8 inches with a steel blade and 6 to 7 inches with a brush cutter blade. The bullets describe two packs with 6000mAh total capacity and a runtime of 90 to 120 minutes when the packs are used alternately. The listing says the blade changes need no tools.
Liupoket L25-01: the light 3-in-1 with wheels
The Liupoket L25-01 is the lightest model in this group at 3.28 pounds, according to its bullets. It is a 3-in-1 unit with a telescopic shaft that the spec field gives as 41 inches, and the bullets describe a total length of about 47 inches. The head rotates from 0 to 90 degrees, and the handle has a 0 to 180 degree range. The package includes two 2000mAh batteries, a fast charger, wheels and four blade types.
The spec field gives a speed of 20,000 rpm and an 8-inch cutting width. The bullets describe a pure copper motor. The item suits a smaller yard with narrow beds, but the 8-inch cut is narrower than the 12-inch models above, so expect more passes on a larger edge.
Which edger string trimmer to choose
For one battery platform and a clean edge along a driveway, the WORX WG163 is the most complete kit listing here, with two packs and a charger included. For a corded setup near an outlet, the BLACK+DECKER BESTA510 gives the widest corded cut at 14 inches. For a tool that you will use often on a large yard, the Bosch GRT18V-40N gives the widest cut, but its 12.7-pound weight means more effort on each pass. For a small yard with tight beds, the Liupoket L25-01 and the Ohey ST-01 are the lighter choices.
Mistakes to avoid
- Buying a tool-only listing without the battery. The WORX WG163.9, WG170.9 and Bosch GRT18V-40N all list the battery as sold separately.
- Comparing cut widths that describe different attachments. The Ohey listing gives a width for each attachment, so use the figure that matches the job.
- Assuming the edger wheel is included. Check the component list, because some listings describe edger wheels as separate items.
- Trimming with the guard removed. Keep the guard on and wear eye and hand protection, as the safety statements in the listings advise.
FAQ
What is a lawn edger string trimmer?
It is a string trimmer that can change its head or wheel setup so it works as an edger. In the listings here, the change is usually a rotation of the head or a wheel guide, and the listing describes how it converts.
Which model has the widest cut?
The Bosch GRT18V-40N is listed at 16 inches. The BLACK+DECKER BESTA510 is listed at 14 inches. The Ohey and the WORX models are listed at 11 to 12 inches depending on the attachment.
Are the WORX models compatible with other tools?
The WORX listings say the batteries work across the PowerShare family, including 20V and 40V tools. Check the battery label on your existing tools before you buy.
Which model is best for a corded setup?
The BLACK+DECKER BESTA510 is the only corded model in this roundup. Its listing describes a cord retention system, which helps prevent accidental disconnection.
Which model is lightest?
The Liupoket L25-01 is listed at 3.28 pounds in its bullets. The WORX WG163.9 and WG170.9 are listed at 4.6 pounds each in their specs.
Do these trimmers need a separate charger?
Several listings include a charger and one or two packs. The WORX WG163.9, WG170.9 and Bosch GRT18V-40N are sold without a battery or charger, so add those before you start.
Bottom line
Choose a 2-in-1 or 3-in-1 trimmer and edger when you want one tool to handle the line along a border and the grass beside it. Decide by battery setup first, cutting width second and weight third. If you already own a battery platform, a tool-only listing leaves the battery out, but it needs that pack to run.
For more cordless edging options, see Best Cordless Lawn Edgers and String Trimmers Compared and How to Edge a Lawn With a String Trimmer: Steps and Checks.
