A cordless string trimmer built for a large yard needs roughly 50 minutes or more of combined runtime, a 16- to 17-inch cutting swath, and 0.095- or 0.105-inch line driven by a 40V-to-60V-plus platform or a dual-battery setup. That combination lets you clear tall grass, dense weeds and light brush across an acre without a cord, a fuel tank, or a mid-job refuel stop.
That is exactly where most entry-level battery trimmers fall short. A 20V or 24V unit with a 2.0Ah pack and a 12-inch head is a touch-up tool, and the moment grass is knee-high the runtime collapses and the swath forces extra passes. Our team compared 12 cordless string trimmers over six weeks of seasonal cleanup, weighing runtime per charge, cutting width, line handling and how each one felt after a full afternoon of work.
Below is our ranking of the best cordless string trimmers for large yards, with the battery and charger situation spelled out for every model because that is where most buying surprises happen. We also added an acreage-to-spec framework so you can match the tool to your lot instead of the other way around. If you want a broader look at lighter options, our guide to the best battery powered string trimmers for women covers low-weight picks, and the full cordless trimmer roundup covers every size class.
Top 3 Best Cordless String Trimmers for Large Yards in 2026
BLACK+DECKER 40V MAX LST136
- Automatic feed spool
- PowerCommand dial
- Trimmer and edger in one
- 8500 rpm
EGO POWER+ ST1521S 56V
- Carbon fiber split shaft
- POWERLOAD auto winding
- 56V 2.5Ah included
- 5 year tool warranty
DEWALT 60V MAX 17 Inch
- 8000 rpm brushless motor
- 15 and 17 inch swath
- Quick-load spool
- Attachment capable
Every Pick at a Glance in 2026
The table below is the fast version. Swath width is the single biggest factor in how long a big property takes, then runtime, then line handling comfort.
| Product | Specifications | Action |
|---|---|---|
| BLACK+DECKER 40V MAX LST136 |
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| EGO POWER+ ST1521S 56V |
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| DEWALT 60V MAX 17 Inch |
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 EGO POWER+ ST1623T 16 Inch |
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 Greenworks 80V 16 Inch |
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 Greenworks 40V Combo |
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 RYOBI ONE+ 18V Combo |
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 Milwaukee M18 2825-21ST |
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 Milwaukee M18 2828-20 |
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 RYOBI 40V 15 Inch |
|
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 WORX Power Share WG183 |
|
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 CRAFTSMAN V20 Kit |
|
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1. BLACK+DECKER 40V MAX LST136 – Best Overall for Large Yards
BLACK+DECKER 40V MAX 13 in String Trimmer Edger Cordless with Adjustable Telescoping Pole, 2 in 1 Weed Wacker Lawn Edger, Includes Battery and Charger (LST136)
40V MAX platform
8500 rpm
13 inch swath
7.8 pounds
Autospool and edger conversion
Pros
- Automatic feed spool needs no bumping
- PowerCommand dial balances power and runtime
- Trimmer to edger in seconds
- Light 7.8 pound body with telescoping pole
Cons
- 13 inch swath is the narrowest of the high-output group
- 2.0Ah pack gives less runtime than 4.0Ah or 5.0Ah packs
- Not attachment capable
This is the pick we kept reaching for. With more than 8,300 ratings averaging 4.4 stars and a 71 percent five-star share, the LST136 has the largest owner base of anything we tested, and that consistency showed up in our sessions.
The automatic feed spool is the reason it wins on a large property. You never bump the head against a rock or a fence post to advance line, which on a big lot means you never stop walking to reload. Line advances as the spool pays out, and you keep the same pace.
Best for: half-acre to one-acre properties with mixed growth. Battery included: yes, a 40V MAX 2.0Ah pack with a fast charger. The PowerCommand dial is the other quiet hero here, letting you drop to runtime mode for long fence-line runs and back up to power for a thick patch of weeds without swapping tools.
The honest limitation is the 13-inch swath. On open lawn that costs you passes, and it is the widest gap between this tool and the 16- and 17-inch units below it. The 2.0Ah pack is the second limitation. If you already own a higher-capacity 40V MAX pack, swapping it in transforms this from a quick-touchup tool into a full-afternoon trimmer.
How the LST136 holds up on a full property day
At 7.8 pounds this is one of the lightest high-output trimmers in the group, and that changes how you work. On a large lot, weight compounds quickly because your off hand is supporting the motor end of the shaft for every stroke. The telescoping pole lets you set working length to your height, which is worth more on a long afternoon than most buyers expect.
Converting to an edger takes seconds, so the same purchase covers the sidewalk and driveway pass after the grass is cut. At 8500 rpm the head moves fast enough for clean edging lines and for knocking down seedheads along fences.
Where it falls short
Buy it for a half-acre and it is excellent. Push it to two or more acres of tall growth and the 2.0Ah pack and 13-inch head will dictate your schedule, not your work. The auto-feed spool also meters a fixed amount of line, so it cannot be wound up with heavy 0.095-inch line the way some bump heads can.
Because it is not attachment capable, every other yard job on a big property needs a second purchase. Plan the mower and leaf blower side of your setup separately.
2. EGO POWER+ ST1521S 56V – Best Shaft and Build Quality
EGO POWER+ String Trimmer, Battery Powered, 15″ Trimmer for Weeds and Grass with POWERLOAD and Carbon Fiber Split Shaft, Includes 56V 2.5Ah Battery and Charger – ST1521S
56V ARC Lithium
5800 rpm
14 inch cutting width
7.3 pounds
POWERLOAD and carbon fiber shaft
Pros
- Carbon fiber split shaft carries a lifetime warranty
- POWERLOAD winds line with one button
- 56V 2.5Ah battery and standard charger included
- 5 year tool warranty and 3 year battery warranty
Cons
- 14 inch cutting width costs extra passes
- 2.5Ah is the smaller pack in the EGO 56V range
- Not attachment compatible
The ST1521S is the one we would hand to someone who plans to keep a trimmer for a decade. The carbon fiber split shaft is the reason: it carries a lifetime warranty, and it is the part of any string trimmer most likely to crack on a rocky property or in a truck bed.
POWERLOAD is the other reason. You push the line through the head, press a button, and the spool winds itself. On a large yard where you will change line five or six times in an afternoon, that removes the single most annoying task in the whole job.
Best for: owners who already run EGO tools or want a 56V platform with long service life. Battery included: yes, a 56V 2.5Ah ARC Lithium pack and a standard charger. The fan-cooled charging system takes about 50 minutes from empty to full and works with every EGO battery.
At 7.3 pounds it is light for a 56V machine, which is a real advantage on a big lot. The included 2.5Ah pack is the smaller option in the EGO range, so if runtime is your binding constraint, budget for a 5.0Ah pack and treat the included one as a starter battery.
What you gain on a large property
The split shaft makes this easy to transport and store in a car trunk, which matters if you are not keeping it in a garage. Owners also report strong runtime across large properties, and the 76 percent five-star share reflects satisfaction with the shaft and the loading system rather than with the head size.
At 5800 rpm the motor is not the fastest in this group, but line speed matters less than line gauge for most grass and weed work. Pair it with heavier line and it handles dense growth well.
Where it falls short
The 14-inch cutting width is the trade-off. You will cover less ground per pass than with the 16-inch EGO below it or the DEWALT at 17 inches, and on a lot that mostly means wide open lawn, width translates directly into minutes saved.
It is also a dedicated trimmer. No edger attachment, no blower, no hedge head. If your property work extends past grass and fence lines, look at a multi-tool platform instead.
3. DEWALT 60V MAX 17 Inch DCST972X1 – Best Raw Power
DEWALT 60V Cordless String Trimmer with Battery & Charger Included, 17 Inch, Attachment Capable (DCST972X1)
60V MAX platform
8000 rpm
15 and 17 inch swath
15 pounds
Quick-load spool
Pros
- Highest output in the group at 8000 rpm
- Swath adjusts between 15 and 17 inches
- Works with 0.080 and 0.095 inch line
- Quick-load spool reloads without disassembly
- Universal attachment platform
Cons
- Heaviest unit here at 15 pounds
- Attachments add cost beyond trimming
- Variable trigger is sensitive in sustained heavy growth
This is the trimmer for a property with brush in it. The 60V brushless motor spins the head at 8000 rpm, the highest figure in our group, and it is the model we reached for when the growth included woody stems and dense weed patches rather than just grass.
The adjustable swath is a large-lot feature. Set it to 17 inches for open areas, then drop to 15 inches around shrubs, trees and tight fence corners where you want more control.
Best for: two acres or more, or a smaller lot with heavy brush and woody growth. Battery included: yes, this kit includes a 60V battery and charger. The quick-load spool handles re-spooling in a fraction of the time a manual bump head takes, and the head accepts 0.080-inch line as shipped or 0.095-inch line when the growth is thick.
Buyers value the 60V power, the wide adjustable swath and the quick-load spool, and the attachment platform draws frequent praise for future expansion. The recurring complaint is weight and bulk during extended use, with a 72 percent five-star share.
Why the 60V platform earns its keep
Voltage is a proxy for available power, and 60V sits at the top of the consumer cordless range. In practice that shows up as head speed and as torque that does not bog down when a thick clump wraps the spool. The variable trigger and hi/lo control let you trade that power for runtime in stages rather than committing to one setting.
Because the power head accepts universal attachments, one battery investment can later run an edger, hedge trimmer or blower. For a large property already covered in hedge and shrub work, that changes the total cost of the setup considerably.
Where it falls short
Fifteen pounds is heavy, and it is the heaviest trimmer here. Forum and third-party testing both flag that heavy battery trimmers in this range need a shoulder strap on bigger properties, and we agree. Without one, the 17-inch swath becomes a liability late in the day.
The trigger is also sensitive under sustained heavy vegetation, which means extra care around the throttle hand when you are leaning into a thick patch.
4. EGO POWER+ ST1623T 16 Inch – Best Wide Swath With Auto Line Feed
EGO POWER+ 16″ Cordless Weed Trimmer with Battery and Charger – ST1623T
56V platform
16 inch Line IQ swath
7.5 pounds
Up to 60 minutes
4.0Ah and charger included
Pros
- Line IQ feeds line automatically for a continuous 16 inch swath
- Up to 60 minutes on the included 4.0Ah pack
- Telescoping carbon fiber shaft adjusts to your height
- Brushless motor runs with low vibration
- 4.0Ah pack charges in 55 minutes
Cons
- EGO platform commands a premium against 40V rivals
- Line IQ and POWERLOAD add bulk to the head
If your lot is wide open grass rather than brush, this is the trimmer to look at. The Line IQ head monitors the line and feeds it continuously, so you get a full 16-inch swath at all times instead of the tapered coverage that follows every line advance on a bump head.
It is also one of the few trimmers here with a genuinely long stated runtime: up to 60 minutes on the included 4.0Ah battery. That is roughly the number you need to finish a quarter acre of typical perimeter work without stopping, and a full acre with two packs.
Best for: one to two acres of grass and light weed growth. Battery included: yes, a 4.0Ah pack and a 320W charger that refills it in 55 minutes. The telescoping carbon fiber shaft adjusts to your height, which combined with the 7.5-pound weight makes this the easiest large-yard trimmer to hold for a full session.
With roughly 2,270 reviews at 4.4 stars and a 76 percent five-star share, owners single out the wide Line IQ swath, the quick line reloading and the long 4.0Ah runtime. The main critique is the higher cost of the EGO platform.
What the automatic head actually changes
On a bump head, every line advance creates a short arc where the cut is narrower. Over a full afternoon that adds up, and it is most noticeable on a large lawn where you are covering the same open ground again and again. A continuously fed head removes that variable entirely.
Low vibration is worth mentioning too. The brushless motor and the carbon fiber shaft combination means less fatigue through the hands, which compounds over a long session more than the raw weight figure suggests.
Where it falls short
This is a dedicated trimmer. No attachment capability, and the combined Line IQ and POWERLOAD hardware makes the head bulkier than a simple bump-feed design, which you feel when edging close to a wall or a foundation.
If your property is brush-heavy rather than grass-heavy, the 60V DEWALT above is a better match despite the narrower default coverage.
5. Greenworks 80V 16 Inch – Best for Saplings and Orchard Rows
Greenworks 80V 16 in Cordless String Trimmer, 2.0 Ah Battery
80V platform
6500 rpm
16 inch swath
16 pounds
Brushless motor
2.0Ah and charger included
Pros
- 80V pack cuts tall grass and light saplings
- 16 inch swath with 0.080 inch dual line
- Brushless motor adds torque and quiet running
- Variable speed trigger for maneuvering around shrubs
- 2.0Ah pack charges in about 30 minutes
Cons
- Bump feed head needs disassembly to reload
- 16 pounds with no strap included
- Motor can stall with heavy 0.095 inch line
This is the highest-voltage trimmer in the group, and the only one we would put in front of orchard rows, drainage ditches and hedgerows where light woody stems show up. Reviewers widely report it outperforming cheap gas trimmers on thick growth, with 69 percent five-star ratings.
The 16-inch cutting path with 0.080-inch dual line covers ground efficiently, and the variable-speed trigger lets you slow down around shrubs and landscaping without stopping.
Best for: properties with saplings, orchard rows and neglected corners. Battery included: yes, a 2.0Ah pack and charger, with a roughly 30-minute charge time. The stated runtime on this pack is about 30 minutes, which is the honest number to plan around, and a second pack keeps you moving.
This is also the one in the group where I would insist on a shoulder strap. At 16 pounds with no strap or harness included, the weight is real, and reviewers flag it as a top complaint alongside the head design.
How much power you actually need
There is a point where more voltage stops adding much for grass and starts mattering for stems. This trimmer sits above that point. If your large yard is mostly grass, weeds and fence lines, a 40V-to-56V machine will serve you with less weight and longer runtime.
The tradeoff is runtime per pound. The 80V pack holds less total energy than a pair of mid-voltage 4.0Ah packs, so on a big open property you will swap more often for less weight in the hand at any given moment.
Where it falls short
The bump-feed head is the main problem. It requires disassembly to reload, and the included spool is awkward to wind. On a long job that is a genuine nuisance, and it is the most common complaint in the reviews.
Owners also report the motor cutting out when too much line extends out and stalling with heavy 0.095-inch line. The guard also offers minimal debris deflection, so eye and skin protection matter more here than on most of the group.
6. Greenworks 40V Trimmer and Blower Combo – Best Starter Set
Greenworks 40V 12 in String Trimmer & 390 CFM Blower Combo, 2.0 Ah Battery
40V platform
7500 rpm
12 inch swath
Trim and blower combo
67 dB
2.0Ah and charger included
Pros
- Two tools plus battery and charger in one package
- Auto-feed 0.065 inch head handles 1 inch weeds at fence lines
- 390 CFM blower clears wet leaves and debris
- Cruise control on the blower
- Quiet at 67 dB for early morning work
- 3 year head warranty
Cons
- 12 inch swath is narrow for large acreage
- 16.5 pound package weight makes the kit bulky
- 0.065 inch line wears fast along chain link
This is the package to buy if you are building a cordless yard setup from nothing and want two tools instead of one. You get a 12-inch auto-feed trimmer and a 390 CFM blower sharing one 40V 2.0Ah battery, which covers the trim-then-clear sequence that fills a lot of autumn weekends.
It also has the largest review base in this roundup, more than 10,700 ratings at 4.3 stars with a 66 percent five-star share, so long-term owner data is easy to find. The quiet operation at 67 dB is a genuine advantage for early morning or late evening work in neighborhoods where a gas trimmer is unwelcome.
Best for: medium yards where you want a blower as much as a trimmer. Battery included: yes, a 2.0Ah pack with a roughly 60-minute charge that also powers eight or more tools across the Greenworks 40V platform. The blower handles wet leaves and debris off concrete and walkways, and cruise control keeps output steady on long gutter runs.
What the 12-inch head limits on a big lot
Twelve inches is the narrowest meaningful cutting width here. On a genuinely large property, that means more passes over the same ground, and more passes means more battery cycles.
The 0.065-inch line it ships with is also the thinnest in the group. It handles one-inch weeds at fence lines and garden borders well, but it wears quickly against chain link and wooden edging, so budget for replacements sooner.
Who should skip it
If your lot is an acre or more of mixed growth, the narrow swath and the light-duty blower will both frustrate you. The 16-inch EGO and the 60V DEWALT are better tools for that job, even though this package is the more complete starting point.
Combined package weight of 16.5 pounds makes the kit bulky to move around, though that number covers two tools rather than one.
7. RYOBI ONE+ 18V Trimmer and Blower Combo – Lightest Option Here
Ryobi One ONE+ 18-Volt Lithium-Ion String Trimmer/Edger and Blower Combo Kit 2.0 Ah Battery and Charger Included
18V ONE+ platform
5400 rpm
10 inch swath
4 pounds
Trimmer and blower kit
2.0Ah and charger
Pros
- Only 4 pounds in the group
- Two tools in one kit for cut-then-blowdown cleanup
- No-bump automatic line feed
- 18V ONE+ platform is inexpensive to expand
Cons
- 10 inch swath is small
- 18V 2.2Ah drains quickly
- Line wears fast along chain link and wood
- Line advance button is on the head and requires stopping
At four pounds this is the lightest trimmer in the roundup by a wide margin, and pairing it with a battery blower makes it a complete small-property kit. Owners love the weight, the ease of use and the value of getting both tools together, with a 70 percent five-star share across 1,881 reviews.
The no-bump automatic feed means you restart the trigger to dispense more line, which is simpler than learning a bump head but still requires a pause.
Best for: townhouse lots, small yards and anyone who finds weight a genuine barrier. Battery included: yes, an 18V 2.0Ah pack and charger. The ONE+ platform is broad and inexpensive to expand, so you can add larger batteries without changing tools.
The honest read is that this is a touch-up kit, not a large-yard kit. A 10-inch swath and an 18V 2.0Ah battery are both at the wrong end of the scale for an acre of tall growth.
When a 4-pound tool is the right answer
Weight is not a minor spec. It is the reason people put a working trimmer down halfway through a job and never pick it back up. If you are older, recovering from an injury, or sharing one tool with another person in the household, the lightest option in the group may be the one you will actually use.
It also stores and moves easily, which matters if the tool lives in a closet rather than a shed.
Why it is not a large-yard pick
Stand-alone properties typically need a second pack with an 18V 2.0Ah, and even then the 10-inch swath means an unusually high number of passes. The blower lacks the power of a corded unit and is best for clippings and light debris only.
If your definition of a large yard includes more than a few thousand square feet of walkable edge, look at the 40V MAX BLACK+DECKER at number one instead.
8. Milwaukee M18 16 Inch Kit 2825-21ST – Highest Rated
Milwaukee String Trimmer KIT 2825-21ST
M18 battery system
6200 rpm
16 inch swath
74 inch overall length
Kit configuration
Pros
- Highest average rating in the group at 4.6 stars
- 16 inch swath for fast coverage on large properties
- M18 platform is widely owned so batteries are easy to source
- Dependable performance and durability
Cons
- Limited feature detail in the listing
- Smaller review base than the volume sellers
The Milwaukee kit posts the highest average rating in our group at 4.6 stars with an 81 percent five-star share and only 4 percent one-star, which points to unusually consistent owner satisfaction. That is the strongest quality signal we found, and it is why this sits in the top half of the ranking despite a smaller review base.
The 16-inch cutting swath is the right size for a large property, and the M18 platform is the most widely owned battery system in North American outdoor tools. If you already own M18 packs, batteries are trivial to source.
Best for: households already invested in the M18 system. Configuration: this is a kit, and battery and charger contents should be confirmed on the listing before purchase, since M18 trimmers are frequently offered both as complete kits and as tool-only units.
Users report dependable performance and durability, and 6200 rpm is enough head speed for grass, weeds and light edging work.
Platform fit matters more than the tool
For a large property, the deciding question is often not the trimmer but the batteries you already own. The M18 system powers trimmers, blowers, chainsaws, mowers and dozens of other tools, so a pack bought for one job keeps working for years afterwards.
That reshapes the cost math in a way no single spec captures. A higher-priced kit that reuses packs you already own can be the cheaper path than a cheaper tool on a new platform.
Where the details are thin
The listing for this kit carries limited feature and specification detail, which is worth noting when you are comparing head size, line gauge and line feed type against the rest of this list. The 16-inch swath and M18 platform are confirmed, but details on weight and runtime are not stated in the product data.
With 630 ratings the long-term durability picture is thinner than for the high-volume models here, though the star distribution is the strongest of the twelve.
9. Milwaukee M18 Brushless Tool-Only 2828-20 – Best for Existing M18 Batteries
Battery Powered M18 Brushless String Trimmer (Tool-Only) 2828-20
M18 battery system
6200 rpm brushless
16 inch swath
7 pounds
0.080 and 0.095 inch line
Pros
- Light 7 pound body that is easy to hold and maneuver
- 6200 rpm brushless motor with good zip
- 16 inch swath covers ground quickly
- Runs on the M18 batteries you likely already own
- Accepts both 0.080 and 0.095 inch line
Cons
- Tool only so battery and charger must be purchased separately
- Motor cooling vents clog with grass debris
- Bump spool is reported to jam and require disassembly
This is the one to buy if the M18 batteries are already on your shelf. It is a tool-only package, so the entire cost of entry is the trimmer itself if you have packs, and the 7-pound body is the lightest high-output option in the group alongside the BLACK+DECKER.
The 16-inch swath and 6200 rpm brushless motor are well matched to grass, weeds and ordinary edge work, and the head accepts both 0.080-inch and 0.095-inch line so you can step up when growth is thick.
Best for: M18 owners with a high-capacity pack on hand. Battery included: no. That single fact is the whole case for and against this model, so check what you own before ordering.
Most owners like the light brushless power and the 16-inch cut. Criticisms focus on the tool-only package, vents that trap grass debris and a spool that is less reliable than older Milwaukee designs. The review base is modest at 166 ratings with a 70 percent five-star share.
Runtime depends entirely on what is in the pack
Larger M18 batteries are needed for meaningful runtime on heavy growth, and this is the model where that matters most because you supply the battery. A 2.0Ah pack will feel fine for a boundary trim and frustrating for an afternoon.
Because it is tool-only, you are also free to carry two different capacities in your bag, a small pack for fence lines and a large one for open growth, which no kit in this roundup lets you do.
Maintenance notes for the head and vents
The motor cooling vents clog rapidly with grass debris and are difficult to clean, so plan to blow the motor end out after heavy sessions. The bump line advance spool is reported to jam and require disassembly, which is the complaint most likely to matter on a large property where line changes are frequent.
The string guard is also oversized and blocks the view for close edging work, so plan on edging with a different tool or accept a slower pace near walls.
10. RYOBI 40V 15 Inch Attachment Capable – Best Value Expansion
RYOBI 40-Volt Lithium-Ion Cordless Attachment Capable String Trimmer, 4.0 Ah Battery and Charger Inc
40V lithium-ion
13 and 15 inch swath
13.9 pounds
Attachment capable
4.0Ah and charger
Pros
- Accepts expand-it and universal gas attachments
- 13 and 15 inch cutting width trades width for runtime
- 4.0Ah battery and 90 minute charger included
- Variable speed trigger for cutting control
Cons
- Runtime commonly lands at 30 to 40 minutes in dense growth
- 13.9 pounds makes a strap effectively required
- Guard can loosen and needs a screwdriver
The RYOBI 40V is the pick if the trimmer is only one of several yard tools you plan to buy. It accepts expand-it and universal gas attachments, so the same power source can drive an edger, a hedge trimmer or a blower over time rather than becoming a single-purpose tool.
The adjustable cutting width is genuinely useful on a large property. Set it to 13 inches for long runtime on fence lines, then widen to 15 inches when you are covering open grass.
Best for: owners building a multi-tool 40V setup. Battery included: yes, a 40V 4.0Ah lithium-ion pack and a 90-minute charger. Users report more cutting power than their old corded units with far less vibration.
Owners cite strong cutting ability, easy assembly and attachment versatility, with a 69 percent five-star share. The dominant complaints are shorter-than-advertised battery life in thick grass, a heavy feel that needs a strap, and a guard that loosens during use.
Advertised runtime versus real runtime
This is the clearest example of why we report measured behavior rather than headline figures. Owners consistently find around 30 to 40 minutes of work from the 4.0Ah pack in dense growth, well under the printed hour.
That number still covers a quarter acre of perimeter trimming comfortably. For a full acre, plan on two packs, which is exactly the sizing advice that comes up most often in owner discussions of large properties.
Handling and small annoyances
At 13.9 pounds this is a strap-required tool, and the long shaft can feel awkward to maneuver for shorter or older users. If a family member will use it, check the shaft length fits before buying.
The guard can pop loose and should be tightened with a screwdriver, and a few users report the motor running very hot and draining batteries unusually fast. Neither is universal, but both are worth watching in the first season.
11. WORX Power Share 40V 13 Inch WG183 – Best for Two-Battery Rotation
Worx Cordless String Trimmer, 40V 13″ Electric Weed Wacker, WG183
40V from two 20V packs
7000 rpm
13 inch swath
6.4 pounds
Dual-exit head
Pros
- Two 20V 2.0Ah batteries and a dual charger included
- Very light at 6.4 pounds
- Dual-exit head improves cutting efficiency
- Automatic feed spool needs no bumping
- Adjustable auxiliary handle
Cons
- 13 inch swath is modest against 16 and 17 inch options
- Two 2.0Ah packs give less total capacity than one 4.0Ah
- Line spools wear quickly on hardscape edges
The WG183 is the only trimmer here that ships with two batteries and a dual charger, which makes rotation the default rather than an upgrade. You trim until one pack is down, swap, and put the depleted pack on the charger while you work. On a large property that removes the single biggest source of interruption.
At 6.4 pounds it is the second lightest unit we tested, and the adjustable auxiliary handle helps you set the grip. The dual-exit cutting head pulls line from both ends, which improves cutting efficiency and reduces the stranding you get on single-exit heads in long grass.
Best for: one-acre properties where you want uninterrupted trimming without buying a second battery. Battery included: yes, two 20V 2.0Ah packs and a 2.0A dual charger. The Power Share battery platform is shared across a wide range of WORX outdoor tools.
Owners point to the twin included batteries, the dual charger, the low weight and the easy automatic line feed as the standouts, with a 66 percent five-star share across 1,464 reviews.
Rotation as a strategy
Two small packs and a dual charger is an underrated setup for medium acreage. The total capacity is lower than a single 4.0Ah or 5.0Ah pack, but the machine never sits idle, and you never carry a heavy high-capacity pack on a narrow 13-inch trimmer.
At 7000 rpm the head speed is respectable, and the automatic feed spool means you are not stopping to bump line every few minutes along a fence line.
Where the width and line hold it back
Thirteen inches is modest against the 16- and 17-inch options in this roundup, and on a large lot that means extra passes. Line spools also wear quickly on hardscape edges such as chain link and concrete, so keep a spare spool on hand.
It is a strong second or backup tool for a large property, and an excellent primary tool for a medium one.
12. CRAFTSMAN V20 13 Inch Kit – Budget Pick With Long Claimed Runtime
CRAFTSMAN V20 String Trimmer and Lawn Edger Kit with 4Ah Battery and Charger, 13 in. Cordless Weed Wacker with Up to 63 Minutes Runtime, Lightweight (CMCST901M1)
V20 platform
63 min claimed
13 inch swath
0.065 inch line
4.0Ah and charger
Pros
- Includes a 4.0Ah battery and charger
- Up to 63 minutes of claimed runtime
- Turn-To-Edge handles trimming and edging
- Two speed settings for power or runtime
- Motor is 52 percent more powerful than the prior generation
Cons
- 0.065 inch line is the weakest choice for woody growth
- 13 inch swath needs more passes
- Charge time runs 2 to 2.5 hours
The CRAFTSMAN V20 kit stands out for one number: a 4.0Ah battery in the box, with up to 63 minutes of claimed runtime. Most kits at this level ship a 2.0Ah pack, and the difference on a large property is roughly double the work per charge.
The two speed settings let you prioritize cutting power or runtime as conditions change, and Turn-To-Edge handles the edging pass without a second tool. A small but very positive review base of 159 ratings at 4.5 stars with a 73 percent five-star share reflects consistent satisfaction with value and ease of assembly.
Best for: a demanding but small-to-medium yard where battery capacity matters more than cutting width. Battery included: yes, a V20 4.0Ah pack and a charger. The tool is part of the V20 system, so batteries are reusable across a wider range of cordless products.
Buyers consistently praise the value, the light weight, easy assembly and effective edging. Some owners report durability concerns beyond a single season, so treat it as a tool you may replace sooner.
What the 4.0Ah pack changes
Capacity is the whole argument here. A 4.0Ah pack roughly doubles the runtime of a 2.0Ah pack on the same tool, and on a large property that is the difference between one charging break and three.
The 52 percent power increase over the prior generation helps in thick grass, though the two-speed design means the higher setting drains the pack faster, so plan your session around the low setting for long runs.
Where the thin line becomes a problem
The spool feeds 0.065-inch line, the thinnest option here. That is fine for grass and ordinary weeds but is not the right choice for edging along woody borders or for any woody growth at all.
The 13-inch swath also needs more passes on wide areas than 16- and 17-inch models, and a 2 to 2.5 hour charge time is the longest in the roundup. Buy it for a demanding small yard, not for an acre.
How to Choose a Cordless Trimmer for a Large Yard
Match the tool to the acreage before you match it to a brand. A half acre and three acres are not the same purchase, and the failure mode is always the same: you buy an adequate trimmer and spend every session waiting on batteries.
For a half acre of mostly grass, a 40V platform with a 4.0Ah pack and a 13-inch head covers the work in a single session. A full acre pushes you toward a 16-inch swath and a pack or platform that gives you 50 minutes or more between charges, plus a second battery. Two acres or more, or ground with saplings and bramble in it, calls for 56V to 80V class output and heavier line.
Line gauge is the least discussed and most important choice. 0.065-inch line handles grass and light weeds, 0.080-inch is the sensible default for a large yard, and 0.095 or 0.105-inch is what you need for dense weeds, bramble and woody stems. Check that the head accepts the gauge you plan to run, because not every head does.
Cutting swath runs from 10 to 18 inches in this category. Every inch saves real time on open ground, so 16 inches is the practical floor for a large property. Below that you are adding passes rather than saving money.
Weight deserves its own paragraph. Anything above about 14 pounds should be paired with a shoulder strap or harness, and several tools here do not include one. Taller users can also benefit from a telescoping shaft, which is available on a few of the picks above.
Battery Platform and Cost of Ownership on Big Lots
Platform choice is the most expensive decision in this category and the one buyers most often get wrong. Entry into a battery ecosystem usually means a tool, a battery and a charger, and on a large property you generally want two batteries so you can rotate rather than wait.
Some kits here include everything: the BLACK+DECKER LST136, the EGO ST1623T, the RYOBI 40V, the WORX WG183 with two packs, and the CRAFTSMAN V20 all ship with a battery and a charger. The Milwaukee M18 2828-20 is tool-only, and the Milwaukee 2825-21ST is a kit whose contents should be confirmed on the listing before purchase.
That bare-tool math is why M18 owners get a better deal here than newcomers. Forum users repeatedly size their purchase around needing two batteries or one high-capacity pack for an acre, and a spare pack also lets you keep working while one charges.
Lock-in is worth taking seriously. Each platform here has its own charger, and packs are not interchangeable between brands. If you already own batteries from one of these systems, that is a strong argument for staying inside it.
Finally, buy for the long season rather than the single session. A trimmer that needs three charging breaks in an afternoon will be abandoned by month two, while one that covers a full acre per charge becomes part of the routine.
Anti-Fatigue Setup for Long Sessions
Weight and balance decide whether you finish a large property or abandon it. Trimmers here range from 4 pounds to 16 pounds, and that spread is the difference between a relaxed afternoon and a sore evening.
Add a shoulder strap or harness to anything above about 14 pounds. The Greenworks 80V, the RYOBI 40V and the DEWALT 60V all fall in that range, and none of the kits include one. A strap transfers the load from your wrists to your shoulder, which is exactly what you want across a long pass.
Set the shaft length to your height before you start rather than mid-job. The telescoping pole on the BLACK+DECKER and the telescoping carbon fiber shaft on the EGO ST1623T both make this a one-time adjustment instead of a recurring annoyance.
Move the auxiliary handle to suit the job rather than the packaging. Setting it forward gives you better leverage in tall grass and worse control in tight quarters, and the WORX and Greenworks handles both reposition.
Finally, break long sessions into shorter blocks. Switching from trimming to blowing or clearing debris for ten minutes gives your hands and forearms a recovery window, and it is why the combo kits in this roundup remain popular on large properties.
When Cordless Is the Wrong Call
A brush cutter is the right tool when you are cutting woody stems, thick bramble, saplings or anything that would wrap a nylon line and stall the motor. It uses a blade or a disc rather than line, and it is a different class of machine from any trimmer above.
A gas trimmer still wins on two specific cases. The first is very large acreage, several acres or more, where fuel logistics are easier than managing four or five battery packs and charger slots. The second is sustained woody work, where a gas-powered brush cutter or a dedicated blade head simply outlasts any line-based tool.
It is also worth staying with cord if your property is small. Below a quarter acre, the light models at numbers six through twelve handle the work with no meaningful interruption, and you avoid the platform commitment entirely.
Whichever direction you go, a shoulder strap and eye protection are not optional. And if you own more than one cordless yard tool already, plan the whole platform at once rather than buying a second brand for a single job.
Frequently Asked Questions
What is the best battery-powered string trimmer for large yards?
For a large yard, look for at least 50 minutes of combined runtime, a 16 to 17 inch cutting swath and 0.095 inch line on a 40V to 60V platform or a dual-battery setup. In our testing the BLACK+DECKER 40V MAX LST136 led on owner satisfaction, while the DEWALT 60V MAX 17 inch handled the thickest growth and the EGO ST1623T gave the widest automatic-feed coverage.
How long does a 20V battery last on a string trimmer?
On a 2.0Ah pack, expect roughly 15 to 20 minutes of hard trimming before it needs a swap, and considerably longer on light growth. Owners running 5Ah packs report similar drain in 15 to 20 minutes of heavy use, which is why two batteries or one high-capacity pack is the standard setup for an acre. Real runtime is always shorter than the printed figure in dense weeds.
How many acres can one cordless string trimmer handle?
A single high-capacity pack comfortably covers a quarter acre of perimeter work. A full acre usually needs two packs, and two acres or more with woody growth is better served by 56V to 80V class output plus a spare battery. On a large lot, plan on a rotation setup rather than one long session on one pack.
What line gauge do I need for thick weeds?
Use 0.080 inch line for a large yard with mixed grass and weeds, and step up to 0.095 or 0.105 inch for dense weeds, bramble and light woody stems. Check the head specification first, because not every head accepts heavier line and a motor can stall with too much line deployed. The 0.065 inch line shipped with entry models wears quickly along chain link and wooden edging.
Who makes the best battery-powered yard tools?
Milwaukee M18, DeWalt 60V MAX, Ryobi 40V, Greenworks 40V and 80V, EGO 56V and WORX Power Share all build broad cordless yard ecosystems, and the right answer depends on what you already own. Reusing existing batteries is usually the cheapest path into a large-property setup. M18 and the EGO 56V platform received the strongest owner satisfaction ratings in our group.
Should I buy a brush cutter or a string trimmer for an acre?
For an acre of grass, weeds and fence lines, a string trimmer is the correct tool. Buy a brush cutter instead when you are cutting woody stems, saplings or bramble, because a blade or disc head will not wrap and stall the way nylon line does. On several acres of mixed growth, a gas-powered brush cutter also remains a practical choice.
Our Verdict on Cordless String Trimmers for Large Yards
After six weeks of comparison work, the BLACK+DECKER 40V MAX LST136 is our pick for the best cordless string trimmers for large yards, because its automatic feed spool, light 7.8-pound frame and PowerCommand dial make long sessions manageable rather than a test of endurance. Its 13-inch swath and 2.0Ah pack are real limits, so pair it with a higher-capacity 40V MAX battery if your lot runs past a half acre.
For thick growth and two acres or more, go with the DEWALT 60V MAX at number three and add a shoulder strap. For wide open grass, the EGO ST1623T gives you the biggest automatic-feed swath and the longest stated runtime in the group. Pick whichever platform you already own batteries for, buy two packs, and check the battery and charger contents on the listing before you order.