Most cordless string trimmers are sold as if every yard is the same size, and they are not. A quarter-acre suburban lot and a three-acre property with fence lines, drainage ditches, and a hillside full of three-foot weeds are completely different jobs, and the tool that handles one will leave you swapping batteries four times on the other. We spent weeks comparing the machines that actually suit big properties, reading thousands of owner reviews alongside the spec sheets, and sorting out which platform deserves your money in 2026.
This guide covers the best battery powered string trimmers for large yards: ten cordless models spanning 20V to 80V platforms, from 5.7-pound lightweights to heavy-duty brushless machines built for saplings and brambles. We break down swath width, line diameter, real-world runtime, and how many spare batteries a property of your size actually needs.
If your trimming is mostly detail work around flower beds and walkways, our companion guide on the best cordless string trimmers for edging is the better read. For the mowing side of a big property, see our picks for the best robot lawn mowers for large yards.
Table of Contents
Top 3 Picks for Large Yards In 2026
Our top three combine proven reliability, usable runtime, and enough power for real overgrowth. The BLACK+DECKER LST136 wins on the largest owner base in the group and a weight that stays comfortable over acres of work.
BLACK+DECKER LST136
- 40V MAX lithium-ion
- 13-inch swath
- Automatic Feed Spool
- converts to edger
Greenworks 80V 16 in
- 80V brushless motor
- 16-inch swath with 0.080 inch line
- variable-speed trigger
Best Battery Powered String Trimmers for Large Yards at a Glance (October 2026)
Here is the short version. Weight, swath, line diameter, and platform capacity decide almost everything on a large property, and those five numbers tell you more than any marketing claim.
| Product | Specifications | Action |
|---|---|---|
| BLACK+DECKER LST136 40V MAX |
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| EGO Power+ ST1511T 15 in |
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| Greenworks 80V 16 in |
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 DEWALT DCST922B 14 in |
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 RYOBI RY40250 40V |
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 BLACK+DECKER LST522 20V |
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 WORX WG183 40V 13 in |
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 CRAFTSMAN CMCST901M1 13 in |
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 Greenworks 60V Trimmer and Blower |
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 CRAFTSMAN CMCST900B 13 in |
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1. BLACK+DECKER LST136 40V MAX 13 in Cordless String Trimmer and Edger
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 lithium-ion
13-inch cutting swath
7.8 pounds
8500 RPM
converts to an edger
Pros
- Automatic Feed Spool needs no bumping
- 7.8 pound weight stays comfortable over long sessions
- Converts from trimmer to edger in seconds
- Over 8000 owner reviews and a proven track record
Cons
- 13-inch swath is narrow for multi-acre work
- 2.0Ah battery is small for heavy growth
- Plastic guard and spool flex under load
The BLACK+DECKER LST136 is the cordless trimmer we would hand to someone who owns two or more acres and has never owned a gas machine. It is not the most powerful thing here, and on a half-acre of waist-high grass it will make you work for every minute. What it offers instead is the least punishing combination of weight, control, and proven durability of any trimmer in this group.
At 7.8 pounds, it is light enough that a full afternoon of fence-line work does not leave your forearms burning. The PowerCommand dial on the handle lets you set the machine for maximum power or maximum runtime task by task, and the PowerDrive transmission pushes more torque to the string than a plain direct-drive motor would. Owners running up to 8500 RPM report clean cuts in thick, wet growth that stalls lighter machines.
The Automatic Feed Spool is the feature that changes a long day on a big property. You never stop to bump the head against the ground, which on large acreage matters more than it sounds, because repeated bumping is a leading cause of scalped turf and shredded line. Refilling the spool is a matter of pressing a button and winding it in.
The included LBXR2040 2.0Ah battery and fast charger refill in two hours or less, and the state-of-charge indicator means you are not guessing whether you have enough left to finish the ditch line. Power is shared across the wider 40V MAX range, so this is a sensible entry point if you also want a blower or hedge trimmer later. For the edging half of the job, the conversion takes seconds.
Is the 13-inch swath wide enough for a full acre?
Not ideally, and this is the LST136’s one real limitation on this topic. A 13-inch path sits at the narrow end of this group, so an acre of open grass takes noticeably more passes than a 15-inch or 16-inch machine would. Expect more forward passes rather than any difference in quality of cut, and plan your battery swaps around it.
If your property is mostly mown lawn with fence lines and ditches on the edges, that narrow swath is a fair trade for a tool you can hold all afternoon. If you are restoring ground that has not been cut in a season, look at a wider machine.
When should you skip this model for something heavier?
Skip it when the job is brush. Owners routinely fit heavier .095-inch line and the head accepts it, but the motor has an upper limit that an 80V brushless machine does not share. Saplings, bramble thickets, and vine-choked fence corners are where you will feel that ceiling first.
Two other cases to weigh: if you already collect 40V MAX packs, this remains a fine addition to the shelf. If you are starting from nothing and own three acres or more, spend up for the Greenworks 80V or the EGO ST1511T and keep this one for detail work. Reviewers report the basic BLACK+DECKER cordless trimmer handling a half-acre Florida subdivision lot without trouble, which is roughly the scale this machine suits.
2. EGO Power+ ST1511T 56V 15 in Cordless Weed Trimmer
EGO Power+ 15″ Cordless Weed Trimmer with Battery and Charger – ST1511T
56V ARC lithium battery
15-inch swath with 0.095 inch line
10.3 pounds
up to 45 minutes
Pros
- POWERLOAD loads line at the press of a button
- Cuts 0.095 inch line for thick weeds and vines
- Telescoping shaft fits different users
- Three-year battery and five-year tool warranty
Cons
- Heavier than most competitors at 10.3 pounds
- Noisy during line loading
- Fifty-minute charge time is longer than rivals
The EGO Power+ ST1511T is the cordless string trimmer we recommend for anyone clearing ground that has been neglected. Where most battery trimmers ship with .080-inch line, this one is built to run professional-grade .095-inch line through a 15-inch swath, and that combination is what lets it handle weeds that flatten lesser machines.
Runtime is the number that matters most on a large property, and the ST1511T is rated for up to 45 minutes on the included 2.5Ah battery. Larger 5.0Ah and 7.5Ah packs from the same 56V ARC Lithium platform extend that further, and community consensus among owners is that the 7.5Ah pack delivers close to an hour on the low speed setting. Two speeds plus a variable trigger let you stretch a pack across light edge work instead of burning it on thick patches.
POWERLOAD is the feature owners mention more than any other on this tool. You thread the line through the head and press a button, and the machine winds it to length for you. On a three-acre property where you might reload line a dozen times a season, that removes the single most annoying task cordless trimmers normally impose. Line itself is easy to find and cheap to replace, which matters when you are cutting along chain link and concrete.
The telescoping aluminum shaft adjusts for different heights and users, and the whole thing is balanced well enough at 10.3 pounds that most people manage a full session without a harness. Owners who came from gas report the switch changes their relationship with yard work entirely: no pull cord, no fuel mixing, and quiet enough for early Sunday mornings. The warranty runs five years on the tool and three years on the battery.
Does the 0.095-inch line really make a difference?
Yes, and it is the single biggest reason to pick this over a similarly priced 20V or 40V machine. Thicker line resists snapping on fence lines and hard edges, cuts faster through dense stands, and has more mass to swing through woody stems rather than deflect off them. Owners fitting heavier line to budget trimmers to solve the same problem report the head stalling; this one is designed for it.
The tradeoff is that 0.095-inch line eats more spool, so you will buy more line than you would on a 12-inch machine with thin line. For an acre-plus property that is a rounding error compared with the time saved.
Who should buy something else instead?
Buy something lighter if you are smaller or older. At 10.3 pounds with a full battery, this is among the heavier tools in the group, and users note it more than the spec sheet suggests. If your acreage is mown lawn with tidy borders, the lighter BLACK+DECKER LST136 will serve you better with less fatigue.
Also consider alternatives if you already collect DeWalt or Milwaukee packs, since platform lock-in is a real cost. And if you want a single power unit for the whole yard, the RYOBI below accepts attachments, while this one is a dedicated trimmer. For straight trimming and heavy clearing, however, this is the machine we would buy.
3. Greenworks 80V 16 in Cordless String Trimmer with 2.0Ah Battery
Greenworks 80V 16 in Cordless String Trimmer, 2.0 Ah Battery
80V brushless motor
16-inch cutting path
16 pounds
6500 RPM
variable-speed trigger
Pros
- Very high torque for a battery trimmer
- 16-inch swath covers ground quickly
- Brushless motor with variable speed control
- 2.0Ah battery refills in about 30 minutes
Cons
- Bump-feed head often fails to advance line
- No shoulder strap included at 16 pounds
- Head can stall if too much line is extended
When a question comes down to whether a battery can do the work of a gas engine, the Greenworks 80V is the one we would put on trial. At 80V it runs 20 volts above the next-highest platform here, with a 16-inch cutting path and .080-inch dual line, it is the only cordless trimmer here whose owner reviews describe cutting saplings and pushing through heavy brush.
The 80V platform drives a high-efficiency brushless motor that makes its power with less heat and less vibration than a brushed design, and the variable-speed trigger lets you dial back on open lawn. Average battery life is around 30 minutes on the included 2.0Ah pack, and that pack refills in roughly half an hour, which is one of the fastest turnarounds here. A second pack is effectively mandatory for any acreage, because 30 minutes covers a good stretch of fence line and no more.
The honest weakness here is the bump-feed head, and it is the first thing owners complain about. Many users report that bumping the head while working does nothing, forcing them to stop, split the head apart, and rewind the spool by hand, sometimes several times an afternoon. On a big property that turns a simple job into an interruption. Test the head on day one with a spare spool before committing your whole season to it.
The second issue is weight. Sixteen pounds with no shoulder strap or harness in the box is a lot of tool to hold at shoulder height, and shorter operators in particular find the 65-inch length awkward. Owners comparing it with gas units still call it well balanced, but a strap is the first accessory we would add. The guard also deflects less than we would like, so expect some debris on your legs when cutting dry grass.
Is 80V overkill for a one-acre property?
Often, yes. If your year is fence lines, ditches, and post-mow cleanup on maintained ground, the torque this machine carries is more than you will ever use, and you will carry the weight for nothing. The 56V EGO covers similar ground with less effort.
Where 80V earns its place is overgrown or rural land: ditches choked with weeds, fence lines swallowed by bramble, brush that a lighter machine would stall on and you would abandon. Reviewers regularly describe this unit powering through growth that stopped their previous gas trimmer.
How many batteries do you actually need?
At roughly 30 minutes per charge, one pack is about a half-hour of trimming and nothing more. For one acre of maintained grass, two packs and one charger is workable. For two acres or more, or for neglected ground, plan on three packs so you are never waiting on a charger while the mower sits idle. The fast charge time makes that rotation painless.
Also weigh the platform before buying. The 80V line shares batteries with larger Greenworks equipment, which is a genuine advantage for anyone expanding to mowers and blowers, and it is worth checking what a spare 80V pack costs before committing, since pack cost sets the real long-term price of heavy use.
4. DEWALT DCST922B 20V MAX XR 14-Inch String Trimmer, Bare Tool
DEWALT 20V MAX* XR String Trimmer, 14-Inch, Tool Only (DCST922B)
20V MAX XR brushless motor
14-inch swath
9.2 pounds
QuickLoad spool
bare tool
Pros
- Works with every 20V MAX and XR battery you own
- Handles brambles and small woody growth
- Quiet enough for early mornings
- Folding hinge stores it in a small garage
Cons
- Battery and charger cost extra on a bare tool
- Motor weight sits at the cutting end
- Consumes batteries quickly beyond half an acre
The DEWALT DCST922B proves that volts alone do not decide how a trimmer performs. At 20V it cuts thick grass, bramble, and small woody stems that stall many 40V machines, because the head accepts .095-inch and .105-inch line without complaint. If you already own DEWALT 20V MAX or XR packs, this is the least costly way to put them to work on acreage.
Because it is a bare tool, the real cost of this machine depends entirely on what you already have. Owners with a stack of 5Ah or 9Ah packs report the DCST922B running a full property session on a charge, which is not something most 20V trimmers can do. Owners with only small 4Ah packs report the opposite: a constant battery diet on anything past half an acre. The motor is not the problem. The battery capacity is.
Build quality is a step above the budget tier. The rubberized grip, the metal drivetrain, and the folding hinge that lets the tool collapse for storage all read as durable rather than disposable, and the 14-inch swath sits in the sweet spot between coverage and weight at 9.2 pounds. The QuickLoad spool system makes line changes straightforward, and the Hi/Lo switch plus variable trigger give you real control over power versus runtime.
Ergonomics are the recurring complaint. The motor sits at the far end near the cutting head, which loads the forearm rather than the back over a long session, and the small debris guard lets more material fly toward you than we would like. Owners cutting near gravel report it throwing stones hard enough to notice.
Do you need new batteries to own this trimmer?
If you already have 20V MAX or XR packs, no, and that is the entire case for this tool. It runs on the same batteries as the rest of the DEWALT cordless range, including PowerStack packs. If you are starting from zero, add the cost of a high-capacity battery and charger to the tool itself before comparing it to kits, and on raw value the kits usually win.
Check what capacity you already own. Small 4Ah packs are fine for a quarter acre and frustrating beyond that, while 5Ah and larger packs change what this machine can do on a large property.
Is 20V enough for heavy weeds and brambles?
For bramble, vines, and woody stems, this one surprises people. Reviews repeatedly describe it matching or beating 40V to 80V machines and even older gas units, provided it is loaded with heavy line and running on the high speed setting. The limit is endurance, not power: it will cut what you point it at, and then the battery is the constraint.
Forum consensus is consistent on the ecosystem point: people already invested in DEWALT or Milwaukee packs stay inside those platforms, because the marginal cost of a new battery outweighs any performance gain from switching brands. If you own neither and your property is large, the EGO or Greenworks makes a cleaner starting point.
5. RYOBI RY40250 40V 15 in Attachment Capable String Trimmer
RYOBI 40-Volt Lithium-Ion Cordless Attachment Capable String Trimmer, 4.0 Ah Battery and Charger Inc
40V lithium-ion
adjustable 13 to 15 inch swath
13.9 pounds
4.0Ah battery included
Pros
- One battery covers trimming
- brush cutting
- and other tasks
- 4.0Ah battery usually finishes a front yard in one charge
- Cutting width adjusts to stretch runtime
- Line holds up against concrete and chain link
Cons
- Runtime falls short in dense tall growth
- 13.9 pounds needs a shoulder strap
- Long shaft is awkward for shorter users
The RYOBI RY40250 makes the most sense when your large yard is not just grass. The power unit accepts RYOBI expand-it attachments and universal gas-shaft attachments, so a single battery and motor can drive a trimmer, a brush cutter, a hedge trimmer, and a blower. On a rural property with fence lines, ditches, and scrub to clear, that flexibility is worth more than any single specification.
The included 40V 4.0Ah high-capacity battery and 90-minute charger are a solid foundation, and owners report it typically covers a full front yard on one charge. The adjustable cutting width from 13 to 15 inches is a smart feature for big acreage: dial it back for light trimming and you stretch the battery, open it up for fence-line work and you cover more ground per pass.
Power is genuinely good for a 40V machine, and Ryobi users consistently report it handling weeds up to two feet tall. The reel-easy bump-feed head dispenses reliably, which matters after hearing the complaints about bump-feed designs elsewhere in this roundup. Line durability is another strength: owners report it surviving contact with concrete, cinder block, and chain link without snapping repeatedly.
Runtime in dense, tall growth is the caveat, falling well short of the advertised hour exactly when you need it most. The 13.9-pound weight and long shaft also make this the least friendly option for shorter or weaker users, and a shoulder strap is effectively mandatory rather than optional. A minority of owners report units overheating and draining packs faster than expected in heavy weed work.
Is one battery really enough for an attachment system?
One battery runs the machine, but an attachment system without spare batteries is a bottleneck. If you plan to trim, then blow, then hedge in the same afternoon, budget for at least two 40V packs so you are not waiting on a 90-minute charge between tasks. That is the hidden cost of platform ownership that buyers rarely calculate, and it applies to every brand in this guide.
The 90-minute charger is also among the slowest here, which makes the two-pack rotation more valuable rather than less.
When does the attachment platform actually pay off?
It pays off when you will use the tool for a whole property system rather than a single job. If you maintain acreage with fences, hedgerows, and a driveway that needs blowing every week, one power unit covering three or four jobs is genuinely cheaper than buying separate tools, and it is the reason this model makes our list despite middling ratings.
If you only trim, it does not pay off. For trimming alone, the EGO or Greenworks delivers more power and more runtime per charge. And if height is a concern in your household, this 13.9-pound machine with a long shaft will be the one you hand to someone else.
6. BLACK+DECKER LST522 20V MAX 12 in Trimmer and Wheeled Edger
BLACK+DECKER 20V MAX 12 Inch Weed Eater Cordless String Trimmer and Wheeled Edger Lawn Tool with Spool, 2.5Ah Battery and Charger Included, Lightweight, 2 Speed PowerDrive (LST522)
20V MAX platform
12-inch swath
5.7 pounds
LBXR2520 battery included
wheeled edger
Pros
- Lightest machine here at 5.7 pounds
- LBXR2520 battery adds 66 percent more runtime
- Two-speed control trades power for runtime
- Wheeled edger base speeds up edging
Cons
- Smallest swath means the most passes on acreage
- 20V lacks punch in very thick brush
- Edger wheels catch on uneven ground
The BLACK+DECKER LST522 is the trimmer we recommend to anyone who finds the weight of the others tiring. At 5.7 pounds it is the lightest machine here by a wide margin, and it carries a 4.5-star average across more than 6,500 reviews with the lowest complaint rate of the group. For a large property maintained by one person who is not twenty-five, that combination is hard to overstate.
The included LBXR2520 battery is the extended-runtime version, delivering 66 percent more runtime than the standard pack, and two-speed control lets you trade power for time depending on the task. The Automatic Feed Spool dispenses line as you work with no bumping, so you can cover long stretches of fence line without stopping or scalping turf.
What makes this machine pleasant rather than merely light is the conversion to a wheeled edger. The wheel base rolls along a sidewalk or driveway edge and holds a consistent line, which is faster and cleaner than trying to steady a bare string head at ground level. On big properties that edging work adds up, and having one tool do both jobs well is worth the extra planning.
The limits are honest and specific. The 12-inch swath is the narrowest here, so large areas take the most passes of any machine on this list. The 20V platform does not have sustained power for very thick brush, and in heavy growth you will swap batteries on any job past roughly half an hour. The micro-texture grip and plastic spool also feel inexpensive next to the metal parts on the higher-voltage machines.
Can a 20V trimmer handle more than a quarter acre?
It can, with the right battery and realistic expectations, which is what makes this a large-yard option rather than a small-yard one. The 2.5Ah pack covers fence lines, ditches, and post-mow cleanup without trouble. Sustained work across several acres in tall grass is where it shows its ceiling, and owners doing that work usually end up with two packs.
If your property is maintained ground rather than neglected ground, the light weight and automatic line feed may matter more to you than raw power. Keep thicker line in mind for fence lines, and expect to make more passes over open areas.
Is this the trimmer for two people on a large property?
It is a strong shared-yard option, precisely because fatigue is low and the controls are simple. Two operators can split a property and finish quickly without either one getting worn out, and the auto-feed head means neither of them needs to learn line reloading before starting.
For a single operator clearing an acre of three-foot weeds, this is not the right tool. Power matters more there than weight, and you would be fighting the machine with every pass. In that situation, choose the EGO or the Greenworks 80V and accept the extra pounds for the extra capability.
7. WORX WG183 40V 13 in Cordless String Trimmer
Worx Cordless String Trimmer, 40V 13″ Electric Weed Wacker, WG183
40V from two 20V packs
13-inch swath
6.4 pounds
7000 RPM
dual-exit head
Pros
- Two 20V 2.0Ah batteries and a dual charger included
- 6.4 pound weight for a 40V class machine
- Dual-exit head improves cutting efficiency
- Power Share batteries work across the range
Cons
- Less cutting power than 60V and 80V machines
- Packs run short on heavy work despite the 40V label
- Spool and head parts feel thin
The WORX WG183 solves a problem most kits create: a single small battery that leaves you waiting mid-yard. This one comes with two 20V 2.0Ah packs and a dual charger, and the two packs together deliver the 40V class performance the label advertises. Out of the box you can work, swap, and keep going without a charging pause, which on a large property matters more than the spec sheet suggests.
At 6.4 pounds it is the second-lightest machine in this roundup, and reviewers consistently single out how maneuverable it is for a 40V tool. The dual-exit cutting head pushes line out of two exits rather than one, improving cutting efficiency at the same 13-inch swath, and the automatic-feed spool eliminates bumping entirely. The adjustable auxiliary handle helps you set the angle for slopes and ditch banks.
The catch is that those included packs are only 2.0Ah each, so the runtime per swap is short even though the number of swaps is lower. Owners doing heavy work report the packs draining faster than the 40V label suggests, and the head simply has less power than a 60V or 80V machine when it meets thick, woody growth. Treat it as a capable mid-size machine rather than a brush cutter.
Build quality is the other limitation. The spool and plastic head components feel thin compared with the metal parts on the DEWALT or EGO, and after months of use a cluster of owners report line winding and feed problems. The Power Share platform does mean batteries are shared across the wider WORX line, so the investment is not stranded if you add a blower or mower.
Are two small batteries really better than one big one?
For continuous work, yes. Two 2.0Ah packs with a dual charger let you swap in seconds and never wait on a charger mid-property, which is the pattern that makes cordless tools frustrating on acreage. One larger pack gives you longer runtime per charge but the same total work, and leaves you idle while it refills.
The trade is capacity per pack versus number of packs. If your sessions are long and uninterrupted, prioritise runtime; if your property is large and your work is broken into sections with walking between them, prioritise the swap.
Where does this run out of ability?
It runs out in woody, dense, or neglected growth. At 13 inches with thin line and modest torque, this trimmer is built for maintained grass, fence lines, and weed cleanup up to ordinary height, and it will bog where the EGO or Greenworks keeps cutting. Reviewers comparing it with higher-voltage machines point to a clear power gap in thick brush.
For a two-acre property that is mown regularly, it is a capable and inexpensive way to get two batteries and a charger in the box at once. For a neglected property being restored, it is the wrong choice, and moving up to more voltage will save you time on every visit.
8. CRAFTSMAN CMCST901M1 V20 13 in Trimmer and Edger Kit with 4.0Ah Battery
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 20V platform
13-inch swath
4.0Ah battery and charger included
up to 63 minutes claimed
Pros
- Up to 63 minutes of claimed runtime on the included 4.0Ah battery
- 4.0Ah battery and charger in the box
- Turn-To-Edge conversion is quick and clean
- 52 percent more power than the previous motor
Cons
- 0.065-inch line is the thinnest here
- Edging results are weaker than rivals
- Charger takes two to two and a half hours
The CRAFTSMAN CMCST901M1 answers a different question than the rest of this list: how much usable runtime can you squeeze out of a 20V platform? The kit includes a 4.0Ah V20 battery and a charger, the largest battery in the entry-level group, and the manufacturer claims up to 63 minutes of runtime, which is the strongest balance of battery size to runtime available in the 20V class, and it makes long property days possible on an entry-level tool.
The motor is claimed to deliver 52 percent more power than the previous generation, and two speed settings let you prioritise runtime on open lawn or power on heavy weeds. Reviewers confirm it cuts through wet grass and thick weeds on the higher setting. Assembly needs nothing more than a Phillips screwdriver, and the tool is light and easy to swing, including for sideways trimming work along edges.
Turn-To-Edge conversion between trimming and edging takes seconds, which gives you a second job out of the same battery. On large properties that edging pass around walks, drives, and the mowing perimeter is often more time-consuming than the trimming itself, so a clean conversion has real value here.
The limitation is line diameter. It ships with 0.065-inch line, the thinnest in this roundup, and owners consistently report that edging performance and durability suffer against concrete, edging, and fence lines as a result. Battery drain above the lower speed setting is also faster than the headline figure implies, and the charger takes roughly two to two and a half hours to refill the pack. The review base is also the smallest here, with fewer than 160 ratings, so treat the sentiment as early rather than settled.
Does 63 minutes of runtime reflect real trimming time?
Not on hard settings. The figure comes from light trimming on the lower speed, and owners report noticeably faster drain once the tool is pushed into thick weeds. Even at roughly half that, a 4.0Ah pack gives you more usable working minutes than any other 20V machine in this group, which is the reason to consider it.
For a large yard, that translates into fewer charging breaks and less planning around the charger. Treat it as good news about endurance, not about power.
Can you fit heavier line to fix the edging problem?
You can try, but owners report mixed results, and this is the model’s clearest limit. Fitting heavier line to a head and spool designed around 0.065-inch is how bump-feed and auto-feed heads start jamming, and the reviews here already include isolated reports of motors failing within a single season. We would not plan on it.
If edging quality and tough fence lines matter most, buy a different trimmer and treat this one as the budget option for grass and weeds. If runtime per dollar is your priority and you already understand the line limits, this is the kit to buy.
9. Greenworks 60V 13 in String Trimmer and 540 CFM Blower Combo
Greenworks 60V 13 in String Trimmer & 540 CFM Blower Combo, 4.0 Ah Battery
60V platform
13-inch dual-line trimmer
540 CFM blower
4.0Ah battery included
4-year warranty
Pros
- Two working tools plus battery and charger in one kit
- Blower clears leaves and debris in a single pass
- 4.0Ah pack handles a large yard then a driveway
- Four-year warranty on tools and battery
Cons
- String loading is difficult and the head is not reliable
- Trimmer head has no adjustable neck for edging
- 22 pound combined weight tires the arm
The Greenworks 60V combo answers the question every large yard eventually asks: do I need a blower as well? This kit includes a 13-inch trimmer, a 540 CFM blower rated for up to 140 MPH air speed in turbo mode, a 4.0Ah 60V battery, and a charger. For a property where leaves, mown grass, and debris are a constant problem, that pairing covers two jobs without a second purchase.
Owners are unambiguous that the blower is the star of this kit. It clears leaves and light debris in a single pass, and the hold switch works like cruise control so you are not holding the trigger down for an hour. The 4.0Ah 60V pack is also praised for endurance, lasting long enough to trim a large yard and still have charge in reserve to clear a driveway.
The trimmer half is adequate rather than impressive. It uses a 13-inch dual-line bump-feed head with .080-inch line, and the consistent complaint is that string loading is difficult and the head does not auto-feed reliably, with several owners replacing the head entirely. The head also lacks an adjustable neck, so you cannot pivot it down for edging the way you can on several competitors here.
Watch the weight too. The listed 22 pounds covers both tools together, which tells you the trimmer is on the heavy side and no shoulder strap is included. Some owners also report the battery bogging down and shutting off at the highest speed in heavy growth, and one received a trimmer with a bent shaft. The four-year warranty on tools and battery is the best in this roundup.
Is the combo genuinely better value than two separate tools?
It is, if you were going to buy a 60V blower anyway, because the trimmer comes along at a fraction of the cost of a standalone set and the battery and charger are already included. The saving is real but it is a bundle saving, not a performance one, since the trimmer half is the weaker of the two.
If you do not need a blower, this makes no sense. Buy a dedicated trimmer instead and put the money toward a higher-capacity battery, which is what actually limits you on acreage.
What are the compromises for large-property work?
Three, and they are worth weighing carefully. The 13-inch swath is narrow for acreage. The bump-feed head will make you stop and reload by hand more than any machine here, which on a big property is a recurring tax. And without an adjustable head, this trimmer cannot double as an edger the way the BLACK+DECKER and CRAFTSMAN kits can.
For a maintained property where blowing is a weekly job, the combo is a sound two-for-one buy. For clearing brush or doing long trimming sessions, spend that money on a dedicated high-voltage trimmer with a wider swath and a reliable line head instead.
10. CRAFTSMAN CMCST900B V20 13 in Cordless Trimmer and Edger, Bare Tool
CRAFTSMAN V20 WEEDWACKER Cordless String Trimmer Edger with Automatic Feed, 13 inch, Bare Tool Only (CMCST900B)
V20 20V platform
13-inch swath
6.7 pounds
automatic line advance
bare tool
Pros
- Automatic line advance with no bumping or manual rewinding
- Light at 6.7 pounds with a telescoping pole
- Turn-To-Edge conversion is quick
- Low entry point for existing V20 owners
Cons
- Bare tool means buying battery and charger separately
- 0.065-inch line limits heavy work and edging
- 20V runs out of power on overgrown property
The CRAFTSMAN CMCST900B is here for one specific situation: you already own CRAFTSMAN V20 packs and want a second tool that uses them. For that buyer it is a clean, inexpensive way to add a trimmer to a battery collection, with a 4.4-star rating across more than 500 reviews backing it up. For anyone starting from zero, the kit version above makes far more sense.
The trimmer itself is competent for routine work. At 6.7 pounds with an ergonomic telescoping pole it is easy to handle, the automatic line advance feeds 0.065-inch line without any bumping or manual rewinding, and Turn-To-Edge conversion switches to edging mode quickly. Two speed settings let you prioritise power or runtime per task, which is more control than most 20V trimmers offer.
What it cannot do is large-property clearing. The 20V platform runs out of power quickly on overgrown ground, and the 0.065-inch line is too thin for fence lines, hard edging, and anything woody. Owners also note the plastic construction and spool durability draw criticism compared with metal-part competitors.
There is also a 13-inch swath, which is narrow for acreage, and a bare-tool package that means the cost of getting started runs past the tool itself unless you already have the battery and charger. Budget for both if you are starting fresh, and even then the CRAFTSMAN kit with the 4.0Ah pack is the better route.
When does a bare tool make financial sense?
When you already own V20 batteries and a charger. That is the only scenario where this configuration wins, and in that scenario it wins cleanly, because the alternative is buying a second battery to power a different tool. Owners with existing packs describe the same logic in reverse, buying a battery to fit the tool they had rather than replacing both.
If you are starting from nothing, compare the full kit price against a machine that includes battery and charger at a higher voltage. The kit is nearly always the better long-term buy.
Will it hold up to two acres of real work?
Not on its own, and we want to be plain about that. It will handle fence lines, ditches, and post-mow cleanup across two acres over several sessions, especially on the lower speed setting. What it will not do is cut three-foot weeds or bramble without repeated stops, because the 20V ceiling arrives before the job is finished.
For a household where a lighter tool is handled by different people, this is a serviceable shared-yard trimmer. For someone restoring an overgrown property, choose one of the higher-voltage machines above and accept the extra weight for the extra capability.
How to Choose a Battery Powered String Trimmer for Large Yards
Choosing well means matching voltage to acreage, counting batteries honestly, and weighing how you will actually spend your afternoons. Start with the yard size, because everything else follows from it. Then check the line system and the platform you are buying into, since both determine whether the machine stays pleasant to own after the first month.
How much voltage does your acreage actually need?
Match voltage to the size and condition of the ground, not to the size of your ambition. Under half an acre of maintained lawn, 20V is genuinely sufficient, which is why the CRAFTSMAN kit and the BLACK+DECKER LST522 handle that work well. Between one and three acres with fence lines, ditches, and regular weed pressure, 40V is the practical floor.
Beyond three acres, or on neglected ground with weeds above knee height, saplings, or bramble, you want 56V to 60V and up. The 80V Greenworks exists precisely for that category, and the difference is not marketing, it is whether the head keeps spinning when the line meets something hard.
One rule of thumb for large properties: buying more voltage than you need costs you weight, and buying less costs you time you do not have. Weight compounds across a full afternoon in a way that raw power does not.
How many batteries should a large yard really need?
Count your session length and divide by realistic runtime, then add one. A trimmer rated for 45 minutes on its included battery realistically gives you 30 to 40 minutes of hard cutting, and dense growth eats into that further. The Greenworks 80V averages around 30 minutes per charge, which means two packs for a working session on one maintained acre and three if you are covering more.
Buy at least two batteries regardless of acreage. A single pack means every session ends in a charging wait, and on a large property that wait is dead time you will pay for repeatedly over the life of the tool. Two chargers are worth considering if you have more than one pack in rotation and a long drive to your property.
Also protect the packs themselves. Community advice is consistent: repeatedly draining lithium batteries to zero shortens their service life, so swap at around 20 percent rather than running to empty, and keep packs off the ground in summer heat.
Why do swath width and line diameter matter more than volts?
Swath width decides how many passes your property costs you, and it is the fastest way to make a large yard manageable. A 12-inch swath means roughly a third more passes than a 16-inch swath across the same ground. Every inch saved is real time on acreage, which is why the 15-inch EGO and 16-inch Greenworks are attractive despite their weight.
Line diameter decides whether the machine cuts or merely pushes vegetation aside. The .095-inch line on the EGO is built for thick weeds and vines, the .080-inch dual line on the Greenworks 80V handles serious growth, and the .065-inch line on the CRAFTSMAN tools is the right choice for grass and light weeds but edges poorly against concrete. Match the line to the job, not the other way round.
The head matters too, and this is where owner complaints cluster. Bump-feed heads require you to knock the tool on the ground to advance line, which on acreage means repeated turf damage and interruptions. Automatic feed systems, whether a spool like the BLACK+DECKER Automatic Feed Spool or a powered winding system like the EGO POWERLOAD, avoid both problems.
Is buying into one battery platform the right call?
It usually is, and the reason is arithmetic rather than loyalty. Batteries cost more than most people expect, so owning a platform you already collect is the cheapest path to more tools. If you already have DEWALT 20V MAX or XR packs, the DCST922B becomes a low-cost addition; if you have Ryobi 40V packs, the RY40250 fits your existing charger.
The platforms worth weighing for expansion are EGO 56V ARC Lithium, Greenworks 60V and 80V, DeWalt 20V MAX and 60V MAX, Ryobi 40V, and BLACK+DECKER 40V MAX. Before buying a bare tool, price a battery and charger for that platform and add them to the total, because that is the real entry cost of owning the platform.
For trimming alongside hedges and bushes, our guide to the best hedge trimmers for shaping shrubs covers the matching tool for seasonal cleanup.
When is gas still the better answer?
When the work is genuinely continuous and genuinely tough. If you are cutting brush, saplings, or bramble across several acres on a weekly basis, a gas trimmer or a scythe will outlast a battery in wall-clock time because refuelling takes a minute rather than an hour. Battery swaps also cannot keep pace with continuous clearing of tall weeds without repeated passes.
For everything short of that, cordless wins on noise, maintenance, and the ability to start at seven on a Sunday morning. The honest comparison is not gas versus cordless, it is battery swapping versus refuelling, and for most large residential properties the swapping has become unremarkable enough that the gas machine loses its advantage.
Frequently Asked Questions
What is the best string trimmer for a large property?
For one to three acres of maintained ground with fence lines and ditches, a 40V to 56V cordless trimmer is the right answer. Our pick for most large yards is the BLACK+DECKER LST136 at 40V, because at 7.8 pounds with an automatic feed spool it stays comfortable across a full afternoon and has more than 8,000 owner reviews behind it. For neglected ground or brush above knee height, step up to the EGO ST1511T at 56V or the Greenworks 80V, which run wider swaths and heavier line.
Which is better for a cordless trimmer, 20V or 40V?
For large yards, 40V. A 20V trimmer is adequate up to about half an acre of maintained lawn, but it reaches its ceiling in thick weeds and needs small batteries to go long. A 40V machine carries more torque for fence lines and tall growth and accepts larger batteries for longer sessions. The exception is if you already collect 20V MAX or V20 packs, because the cheaper battery is worth more than the extra power.
Which trimmer has the best battery life?
Among the machines here, the CRAFTSMAN CMCST901M1 leads on runtime among 20V kits, with a 4.0Ah battery and charger in the box and up to 63 minutes of claimed runtime. In absolute terms the EGO ST1511T is rated for up to 45 minutes on its included 2.5Ah pack and runs close to an hour on a 7.5Ah pack at the lower speed setting. In dense growth, expect roughly half the advertised figure on any of them.
How long does a 20V battery last on a string trimmer?
A 20V 2.0Ah battery typically gives 15 to 25 minutes of trimming on light growth and closer to 10 to 15 minutes in thick weeds, which is why owners on large properties report constant swapping. Extending to a 2.5Ah or 4.0Ah pack lengthens that materially, and the CRAFTSMAN kit shows how much: a 4.0Ah pack in the same 20V class is rated at up to 63 minutes. Swapping before the pack empties also extends its service life.
Can a battery string trimmer handle 1 acre?
Yes, comfortably, if you pick the right machine and carry at least two batteries. A 40V to 56V trimmer with a 15-inch or 16-inch swath covers a maintained acre in one or two sessions with a normal battery rotation. The exception is an acre of three-foot-tall weeds, where gas still performs better and multiple passes are needed regardless of the battery you choose.
Who makes the best battery-powered yard tools?
EGO has the strongest overall balance of power, runtime, and handling for large properties, and the 56V ARC Lithium platform extends across a wide tool range. DeWalt, Greenworks, Ryobi, and BLACK+DECKER are all worth considering when you already own their batteries, since platform lock-in is the main cost in yard tools. The best brand for you is usually whichever platform you already collect rather than the one with the best trimmer on paper.
Final Verdict for Large Yard Owners
For most people maintaining an acre or two, the BLACK+DECKER LST136 is the best battery powered string trimmer for large yards because it stays light through long afternoons, feeds its own line, converts to an edger, and has the deepest owner history in this group. Buy it with a second 40V MAX pack so you are never waiting on the charger mid-property.
Move up to the EGO Power+ ST1511T when the growth is thick and the work is clearing rather than maintaining, since its 15-inch swath and .095-inch line handle weeds and vines that stop lighter machines. Reach for the Greenworks 80V when brush and saplings are on the agenda, and budget for three batteries and a shoulder strap to go with it.
Whatever you choose in 2026, buy two batteries minimum, swap them before they empty, and match the machine to the ground rather than to the sticker value. Those three habits do more for a large property than any specification on the box.