The best battery powered string trimmers for large yards are the 40V and 60V brushless models with a 15-inch or wider cutting swath, a self-loading head, and at least two batteries. Our pick for most multi-acre properties is the EGO POWER+ ST1623T, which pairs a 16-inch Line IQ swath with up to 60 minutes of runtime on the included 4.0Ah battery.
Large-yard work is where most cordless trimmers disappoint. A homeowner with a quarter acre of lawn can finish on one small battery. Someone clearing fence lines, hillside edges and tree rows needs several charges in a single afternoon, and the difference between a 20V tool and a 56V or 60V tool shows up in how many times you walk back to the charger.
We compared ten battery powered string trimmers against the same criteria: cutting width, published runtime, how long the head takes to reload line, weight over a long session, and whether the battery platform is one you can grow into. Real owners in lawn care forums describe roughly 22 to 30 minutes of actual cutting per battery pack in mixed conditions, which is the number that matters more than any runtime figure printed on a box.
Everything below reflects the current generation of high-voltage cordless trimmers available in 2026. We focused on what changes your day in the yard rather than on brand reputation, because the strongest brands in this category do not all build the right tool for a large property.
Table of Contents
Top 3 Cordless String Trimmers for Large Yards for October 2026
The three picks below cover the most common large-yard situations: a property where runtime and auto line handling matter most, a budget-conscious buyer who already works within the 40V class, and a landowner clearing woody growth rather than grass.
EGO POWER+ ST1623T 16in
- 16-inch Line IQ auto-feed
- POWERLOAD auto line winding
- Up to 60 min on 4.0Ah
- Telescoping carbon fiber shaft
BLACK+DECKER LST136 13in
- 40V MAX with 2.0Ah battery
- Automatic Feed Spool
- 2-in-1 trimmer and edger
- PowerCommand dial
DEWALT DCST970B 60V
- 60V MAX brushless motor
- 15-inch cutting swath
- Variable speed trigger
- Tool only
Best Battery Powered String Trimmers for Large Yards in October 2026
All ten trimmers below are listed in the order we would consider them for acreage-scale work. The voltage class, cutting swath and line-loading system do more to determine whether a trimmer suits a large property than the brand badge does.
| Product | Specs | Action |
|---|---|---|
| EGO POWER+ ST1623T 16in Line IQ |
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| BLACK+DECKER LST136 13in |
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| DEWALT DCST970B 60V MAX |
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 Milwaukee 2825-21ST M18 FUEL |
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 RYOBI 40V 15in Attachment Capable |
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 WORX WG183 40V 13in |
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 EGO POWER+ ST1620T 16in Tool Only |
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 Greenworks 60V 16in ST60L413 |
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 Skil PWR CORE 40V Combo Kit |
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 BLACK+DECKER LCC340C Combo Kit |
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Two entries in that table are bare tools without a battery. Several others ship with a single pack. That detail matters more than it first appears, because a large yard needs a rotation rather than one charge.
1. EGO POWER+ ST1623T 16in Line IQ: the Best Overall Cordless Trimmer for Big Properties
EGO POWER+ 16″ Cordless Weed Trimmer with Battery and Charger – ST1623T
16-inch Line IQ swath
60 min on 4.0Ah
Telescoping carbon fiber shaft
7.5 pounds
Pros
- Line IQ feeds line automatically for a constant swath
- POWERLOAD rewinds the head in seconds
- Telescoping carbon fiber shaft fits different heights
- Up to 60 minutes on the included 4.0Ah
- Brushless motor runs cool and quiet
Cons
- Only one battery included
- Line IQ head needs cleaning if it picks up dirt
- Not the cheapest way into the 56V platform
The ST1623T is the trimmer we kept reaching for during this comparison. The 16-inch swath is one of the two widest here, the telescoping carbon fiber shaft lets a shorter and a taller user share one tool, and the 7.5-pound body is light enough that a full afternoon of edging is not punishing.
Line handling is where it beats the field. The Line IQ head senses when the line has frayed and feeds more without any bump from the operator, and POWERLOAD means you thread the line once and push a button to wind it. On a large property where you might reload a dozen times a session, that removes the single most irritating task in cordless trimming.
Runtime is the number to plan around. EGO rates this kit at up to 60 minutes on the included 4.0Ah battery, and that is the top figure in this group. Real work in thick growth runs shorter, closer to the 30 minute range owners report for high-voltage packs, so we would still add a second 4.0Ah or 5.0Ah battery before tackling an acre at a time.
One caution: the auto-feed head is smart, and smart means fussy. A few owners report that once dirt and dried clippings build up under the spool cover the feed stops working until you pull it apart and clean it. That is a five-minute job done between sessions, not a defect, but it is worth knowing before you buy.
Who the EGO ST1623T suits
It suits anyone whose work is grass, weeds, fence lines and tree bases across more than half an acre, and it suits households willing to own one battery platform rather than mixing brands. If you already own EGO 56V ARC packs, this kit effectively costs you the tool and a charger.
It also suits neighbours. A brushless motor at high output is loud enough to wake people at 7am, but far quieter than a gas unit, and the low vibration means the tool stays controllable in thick growth where a two-stroke would be fighting you.
Who should look elsewhere
Skip it if your acreage includes woody brush, blackberry canes or saplings. Nylon line is the weak point, and no voltage class fixes that. If that growth is part of your season, read the brush cutter section in the buying guide before you commit to a string trimmer at all.
Also skip it if you are starting from zero and want the lowest entry cost. The tool-only version of this same design exists, and kits with no battery in the box are a poor fit for large yards.
2. BLACK+DECKER LST136 13in: Most Versatile 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
13-inch cutting path
2-in-1 trimmer and edger
7.8 pounds
Pros
- Most-reviewed cordless trimmer in this list
- Automatic Feed Spool needs no bumping
- Converts to an edger in seconds
- PowerCommand dial trades power for runtime
- Lightweight 7.8-pound package
Cons
- 13-inch swath is narrow for acreage
- Included 2.0Ah battery limits runtime
- Small battery means more swaps
The LST136 is not a dedicated large-yard machine, and we want to be straight about that. Its 13-inch cutting path is three inches narrower than the leaders, which on a two-acre property means roughly a third more passes over the same ground.
What makes it worth including is the 40V MAX platform, the Automatic Feed Spool, and the fact that this is the most heavily reviewed cordless trimmer in our group at more than 8,000 owner ratings. That volume means parts, batteries and advice are easy to find, which matters when you own a tool for a decade.
The 2.0Ah battery is the limiting factor. For a quarter acre of edge work it is genuinely fine, and the fast charger restores full power in two hours or less. For repeated sessions on a large property you would be swapping far more often than you would with a 4.0Ah pack in a higher-voltage tool.
The PowerCommand dial is a small feature with a real effect on a big yard. It lets you drop to maximum runtime for long fence runs and push to maximum power for a thick patch, rather than running one setting all afternoon.
Who the LST136 suits
It suits a first cordless purchase on a medium yard, or a household that wants trimming and edging from one tool and already works within the 40V MAX class. The tool-free line change and edger conversion take almost no learning curve.
It also suits buyers who want a low-risk entry. The 3-year limited warranty and enormous review base make this the least stressful first battery tool we could recommend.
Who should look elsewhere
Look elsewhere if your property is measured in acres rather than lots. The combination of a 13-inch swath and a 2.0Ah pack makes long jobs a battery-management exercise, and the narrow path increases the total time you spend walking the same ground.
3. DEWALT DCST970B 60V MAX: Best for Brush, Bramble and Heavy Clearing
DEWALT DCST970B FLEXVOLT 60V MAX Cordless String Trimmer, Tool Only
60V MAX brushless motor
15-inch cutting swath
Variable speed trigger
12 pounds
Pros
- Handles brush and bramble better than most cordless trimmers
- Variable speed trigger gives real control
- Noticeably quieter than gas
- Works with high-capacity FLEXVOLT 60V packs
- Some owners convert it to saw-blade trimming
Cons
- Tool only with no battery or charger
- 12 pounds is heavy for long sessions
- Cooling inlet can clog with clippings
The DCST970B is the most capable tool in this list for growth that is not grass. Owners describe it clearing heavy brush, blackberry canes and general bushwhacking on the lower speed setting, and several have fitted a saw blade for small tree work, which pushes it toward brush cutter territory.
At 12 pounds it is not a light tool, and for a large yard that weight is felt by the end of an afternoon. The trade is deliberate: a high-output brushless motor and a 15-inch swath that can back into a thicket without stalling.
Be aware of the packaging. This is a bare tool. The battery and charger are sold separately, and for a large property you need at least one high-capacity 60V FLEXVOLT pack, ideally two, before the tool earns its place.
There is one recurring complaint worth taking seriously. The motor is mounted low, and its cooling air inlet can clog with clippings in heavy use. Some owners report having to remove the cover and clean it often, and a few describe motor trouble that followed that pattern.
Who the DEWALT DCST970B suits
It suits a rural property where the season includes bramble, saplings and neglected field edges, and it suits owners already committed to the FLEXVOLT platform. Battery interchange across DEWALT tools is the strongest argument for it.
It also suits anyone who wants to add attachments later. Several owners in this group report successful saw-blade and blade conversions, which extends its useful life well past grass trimming.
Who should look elsewhere
Pass if you mostly mow the edges of a lawn. You would be carrying 12 pounds and buying high-voltage packs for work that a 15-inch 40V trimmer handles at a fraction of the effort and weight.
Pass as well if you dislike maintaining tools. A clogged cooling screen is a recurring chore, not a one-off.
4. Milwaukee 2825-21ST M18 FUEL: Best for Owners Already on the M18 Platform
Milwaukee String Trimmer KIT 2825-21ST
M18 FUEL 18V brushless powerhead
16-inch cutting swath
6200 RPM
Kit with battery and rapid charger
Pros
- Highest average rating in this lineup
- 16-inch swath covers ground quickly
- Smooth and well-balanced in hand
- Kit includes battery and rapid charger
- Part of the widely owned M18 platform
Cons
- Only 630 owner ratings
- so long-term data is thinner
- 18V class gives less headroom on dense growth
- Published weight is listed as 1 kg
The Milwaukee kit carries a 4.6 average rating, the highest figure in this group, and reviewers consistently describe it as the most refined cordless trimmer they have used. The 16-inch swath is joint-widest here, and the 6200 RPM brushless motor delivers both the cutting speed and the runtime balance.
The head matters more on Milwaukee than the spec sheet suggests. An AR15 forum thread on cordless trimmers specifically steers buyers away from the standard head toward the Quik-Lok version because of its easy-load design and its line feeding. Check which head your kit ships with before you judge the platform.
On paper this is an 18V tool, which puts it a class below the 40V and 60V machines for raw output. In practice the 16-inch swath compensates by covering ground faster, and anyone on the M18 platform gets the benefit of batteries they already own.
The rating rests on a smaller sample than most of this list, with 630 owner reviews. That is enough to trust the feel of the tool, less enough to draw conclusions about five-year durability, so we would treat this as a strong platform entry rather than a proven long-term bet.
Who the Milwaukee 2825-21ST suits
It suits tradespeople and homeowners already deep into M18 batteries, who can pick this up without buying a second battery ecosystem. For that buyer, no cordless trimmer here is a better value decision.
It also suits anyone who rates handling above raw torque. The reviews repeatedly mention balance and control rather than brute power, which is the right priority if you work around plantings and fences.
Who should look elsewhere
Look to a 40V or 60V class machine if you are starting fresh and your growth is genuinely tall and dense. An 18V platform has less headroom, and the wide swath only helps if you get through the first pass.
5. RYOBI 40V 15in Attachment Capable: Best for One Powerhead and Many Jobs
RYOBI 40-Volt Lithium-Ion Cordless Attachment Capable String Trimmer, 4.0 Ah Battery and Charger Inc
40V with 4.0Ah battery
13-15 inch adjustable swath
Attachment capable
Reel-easy bump feed head
Pros
- Attachment capable for hedge
- edger and blower work
- 4.0Ah battery included with 90-minute charger
- Swath adjusts between 13 and 15 inches
- Variable speed trigger gives good fence control
- Easy to handle for older or newer users
Cons
- 13.9 pounds is heavy for the class
- Real runtime well below spec in tall grass
- Guard can loosen and needs a screwdriver
The RYOBI powerhead accepts RYOBI expand-it and universal gas attachments, which turns a single battery into a hedge trimmer, edger and blower when you need them. For a large property with more than one kind of edge, that versatility is worth more than a wider cutting swath.
The adjustable swath is a smart feature. Dropping from 15 inches to 13 inches stretches the battery on long fence runs, then switching back gives you the extra cutting width for open edges, all from the same head.
Runtime is where the gap between spec and reality shows. Reviewers regularly report about 30 to 40 minutes of real cutting in thick grass, well short of the marketing figure. A Bogleheads user running a 40V RYOBI reports it handles weeds up to two feet tall, which is a fair gauge of where this class stops struggling.
At 13.9 pounds it is among the heavier tools here, and several owners add a shoulder strap for that reason. The head is a bump-feed design rather than an automatic one, so you will be tapping the head to advance line.
Who the RYOBI 40V suits
It suits owners with mixed jobs who want one battery platform covering trimming, edging and hedge work. A 4.0Ah pack in the box is a genuine advantage over the smaller batteries some kits include.
It also suits anyone who finds the 60V class too heavy. This is a more manageable tool than the 18.7-pound Greenworks, and it will still handle weeds far taller than a foot or two.
Who should look elsewhere
Skip it if the guard loosens bothers you and you dislike a screwdriver mid-job. Several owners report the guard needing retightening, and on a large property that annoyance compounds.
Skip it if auto line feed matters to you. The Reel-easy head is reliable, but it is still bump feed.
6. WORX WG183 40V 13in: Best Lightweight Pick for Long Afternoons
Worx Cordless String Trimmer, 40V 13″ Electric Weed Wacker, WG183
6.4 pound body
13-inch swath
Two 20V 2.0Ah batteries
Automatic feed spool
Pros
- Lightest trimmer in this group by a wide margin
- Two batteries and a dual charger in the box
- Dual-exit head improves cutting efficiency
- Automatic feed spool with no bumping
- Quiet and easy for limited strength
Cons
- 13-inch swath is the narrowest here
- Modest power on very thick growth
- Only 2.0Ah packs to work with
At 6.4 pounds this is the lightest trimmer in the lineup by a distance, and that weight is the entire argument. On a large property the difference between carrying six pounds and carrying thirteen for four hours is the difference between finishing the job and hiring help.
The kit also solves the battery problem that most light trimmers create. Two 20V 2.0Ah batteries and a dual charger are included, so you can swap while one charges instead of standing around waiting.
The trade is width and output. A 13-inch swath is the narrowest here, and the packs are 2.0Ah, so on thick growth you will be making more passes with less muscle behind them. Buyers consistently describe it as strong for regular yard work and modest on the toughest stuff.
WORX Power Share batteries run across the brand’s 20V and 40V tools, which gives you a second ecosystem option if you also own other WORX equipment. The dual-exit head feeds line from both sides, which helps coverage on a narrow path.
Who the WORX WG183 suits
It suits larger acreage owners with limited strength, shoulder problems, or a job that involves long stretches of walking. Fence lines and open field edges are exactly the work this weight profile makes possible.
It also suits anyone who wants a two-battery rotation out of the box. Few trimmers include a second pack and a dual charger together.
Who should look elsewhere
Look elsewhere if your property is mostly dense, knee-high or taller growth. The narrow swath and modest output will make you earn the result with time rather than power.
7. EGO POWER+ ST1620T 16in Tool Only: Best for Existing EGO Battery Owners
EGO POWER+ String Trimmer, Battery Powered, 16″ Trimmer for Weeds and Grass with POWERLOAD, LINE IQ, Telescopic Carbon Fiber Shaft, Battery and Charger Not Included – ST1620T
16-inch continuous swath
LINE IQ and POWERLOAD
7.7 pounds
Tool only
Pros
- Same 16-inch Line IQ head as the kit version
- Carbon fiber shaft backed by a lifetime warranty when registered
- Weather-resistant construction
- Head design has no gap for long grass to snag
- Works with every EGO 56V ARC battery
Cons
- Battery and charger sold separately
- Auto-feed head needs cleaning when dirty
- Some owners report difficulty arranging warranty service
This is the bare-tool version of the design we named as the overall pick, and for the right buyer it is the cheaper path to the same head and shaft. If you already own 56V ARC packs, you are buying the trimmer, not a battery system.
The head is worth the platform on its own. It has no gap for long grass to snag and tangle, which is the failure mode that slows down cheap bump-feed heads in a neglected field, and the carbon fiber shaft carries a lifetime warranty when registered within 90 days.
The 16-inch continuous swath and brushless motor rated to 10,000 RPM class output mean this is a real large-yard head, not a compromise. Owners replacing gas units report that it outlasts their expectations on multi-acre properties when paired with 4.0Ah or 5.0Ah packs.
Buyer warning: this box contains no battery or charger. For anyone without EGO packs already, the kit version further up this list is the correct product, and buying the tool alone to save money is how people end up with a trimmer they cannot use.
Who the EGO ST1620T suits
It suits households with EGO batteries already on the shelf, or those who own several other 56V tools and want one more. The lifetime shaft warranty also appeals to anyone who intends to keep the tool for a decade.
It suits people who work in wet conditions early in the morning, since the construction is described as weather resistant.
Who should look elsewhere
Do not buy this as a first purchase. There is no battery in the box, and the total cost of getting into the platform is what the kit version accounts for.
Also reconsider if you dislike dealing with warranty service. A few owners report friction arranging it, and the auto-feed head still needs cleaning when it picks up dirt.
8. Greenworks 60V 16in ST60L413: Best Value in the 60V Class
Greenworks 60V 16 in Cordless String Trimmer, 4.0 Ah Battery
60V brushless at 10000 RPM
16-inch swath
4.0Ah battery and charger
Attachment capable
Pros
- 60V power owners compare to a 25cc gas trimmer
- 16-inch swath handles medium and large yards
- Attachment capable for hedge
- pole saw and edger work
- 4.0Ah battery and charger included
- Shoulder strap included in the box
Cons
- 18.7 pounds is the heaviest here
- Bulk and awkward around delicate beds
- Only 169 owner ratings so far
The Greenworks is the most interesting value proposition in the 60V class. It puts a 10,000 RPM brushless motor, a 16-inch swath and an included 4.0Ah battery in the same package, and it is compatible with more than 75 other tools on the platform.
Owners include someone who used it on a commercial lawn crew and treats it as a straight gas replacement. A Chronicle Forums user running one on a farm reports about 30 minutes per battery and keeps two, which is exactly the rotation we would plan for.
Weight is the deciding factor. At 18.7 pounds this is the heaviest trimmer in the lineup, and the included shoulder strap is not an accessory, it is a requirement. A commercial user who is comfortable all day is not the same as a homeowner doing a Saturday morning.
The Load N Go head speeds up line reloading, and the attachment capability adds hedge and pole saw work. The 4-year warranty covering tool and battery is longer than the 3-year terms common in this category.
Who the Greenworks ST60L413 suits
It suits owners who want 60V-class cutting power and do not want to start a second battery platform, and who can handle the weight with a strap. Commercial crews and farm users rate it highly for that reason.
It also suits buyers who want attachment options. The shaft accepts hedge trimmer, pole saw and edger attachments, which widens what one battery can do across a large property.
Who should look elsewhere
Look elsewhere if you have shoulder or back issues, or if much of your trimming is close to flower beds and delicate plantings. Reviews describe it as bulky and imprecise in those spots.
Also weigh the thin review history. At 169 owner ratings it is the least proven machine here after the Skil kit.
9. Skil PWR CORE 40V Combo Kit: Best Starter Kit with a Blower Included
SKIL PWR CORE 40 Brushless 40V 14-Inch String Trimmer and 460CFM Blower Combo Kit, Includes 2.0Ah Battery and 60W Charger – CB1400C-11
40V 14-inch trimmer
460CFM blower included
2.0Ah battery
Twist Load head
Pros
- Two tools on one shared 40V battery
- Owners report enough power for typical yard weeds
- Twist Load spooling and dual line bump feed
- Quick-release tube for compact storage
- IPX4 weather resistance
Cons
- Only 42 owner ratings
- One shared 2.0Ah battery limits both tools
- Small battery for a large job
The Skil kit pairs a 14-inch 40V trimmer with a 460CFM blower on the same battery. If you have been putting off buying a blower as well, this clears both jobs and gives you a working 40V platform to grow from.
Sentiment is strongly positive within the sample, and the most repeated caution is the single 2.0Ah battery. Owners call the tools powerful and easy to operate, and one reviewer at 61 reports it handles typical yard weeds without trouble.
We include it with a clear caveat. Forty-two owner ratings is a small sample, and the single pack has to serve both tools. On a large property the trimmer and blower will compete for the same battery, so a second pack is close to essential.
The 14-inch swath sits between the light trimmers and the acreage leaders, and the head uses Twist Load spooling with a dual line bump feed rather than automatic feed.
Who the Skil CB1400C-11 suits
It suits a first cordless purchase that needs two tools, and buyers who want a blower for driveways and leaf cleanup without buying a second platform. The quick-release tube makes storage simpler than a full-length shaft.
It also suits anyone who trims with both hands free. The head and body are simple to work, and the two speed select is enough for most jobs.
Who should look elsewhere
Look elsewhere if acreage is the main workload. A 14-inch swath with one 2.0Ah pack is a light-duty combination, and the shared battery is the first thing to upgrade.
10. BLACK+DECKER LCC340C Combo Kit: Best for Driveways and Hard Surfaces
BLACK+DECKER 40V Max Cordless Sweeper & String Trimmer, Battery & Charger Included (LCC340C)
40V combo kit
13-inch trimmer and edger
130 MPH sweeper
Low noise design
Pros
- Trimmer
- edger and 130 MPH sweeper in one kit
- Automatic Feed Spool with no bumping
- Low-noise design with no fumes or fuel mixing
- State of charge indicator helps plan swaps
- Very large review base at over 7000 ratings
Cons
- 13-inch cutting path
- One shared battery limits combined runtime
- 11-pound combined kit weight
The LCC340C solves a specific large-property problem: everything that is not lawn. A 130 MPH sweeper clears driveways, walkways and paved edges quickly, and the trimmer handles the grass and weeds around them, all on one 40V battery.
It is also the quietest option here by design. There is no exhaust, no fuel mixing and no pull start, which makes it the most neighbour-friendly tool on this list for early morning work on a property bordered closely by other homes.
The trade is scale. A 13-inch cutting path and an 11-pound combined kit weight make this the least suited tool here to genuine acreage, where swath and endurance decide your afternoon.
Owners consistently note the shared battery as the limiting factor, since the sweeper and trimmer draw from the same pack. The state of charge indicator helps you plan around it, which is why it is worth buying before you need it.
Who the LCC340C suits
It suits a large hard-surface property, a church or school groundskeeper, or anyone whose yard is mostly paving, gravel paths and edges. The sweeper is the reason to buy it and the trimmer is a bonus.
It also suits buyers who want a very well-supported tool. More than 7,000 owner ratings means parts and advice are never a problem.
Who should look elsewhere
Look elsewhere if grass and weed cover dominates. For that work, a wider swath and a larger battery will serve you far better than a sweeper you rarely use.
Buying Guide: Matching a Cordless Trimmer to Your Yard
The ten trimmers above are ordered by how well they handle acreage, but the right pick depends more on three questions than on any ranking: what is growing, how much of it there is, and what batteries you already own.
20V or 40V: which voltage class does a large yard need?
For a large property, 40V is the practical floor and 60V is the comfortable ceiling. An 18V or 20V tool is a light-duty machine with a bigger battery badge, and on repeated sessions the difference shows up in how often you stop work.
20V and 18V class: lawn edges, small gardens, fence lines around a quarter acre. One 2.0Ah pack is usually enough for a session. Not built for tall, dense growth.
40V class: the sensible starting point for half an acre to two acres, particularly with a 4.0Ah pack. Covers fence runs, tree bases and overgrown field edges.
56V and 60V class: two acres and up, or any property where the growth is regularly knee-high or taller. The extra voltage is what prevents stalling in thick material.
Voltage is only half the specification. A 40V tool with a 2.0Ah pack has roughly half the working time of the same tool with a 4.0Ah pack, and the lighter pack also tells you the manufacturer is trimming the bill of materials. Always check the Ah rating of the pack that actually comes in the box.
How many batteries your property needs
Do the arithmetic in minutes rather than acres. Real-world reports put a high-voltage battery at roughly 22 to 30 minutes of actual cutting in mixed conditions. A Chronicle Forums owner reports about 30 minutes on a Greenworks pack, and a Lawnsite user reports a pair of batteries covering about 45 minutes total at mixed settings. Use 25 minutes per pack as your planning figure.
Up to half an acre: one battery. A 3,400 square foot workload fits in a single charge on a high-capacity pack.
Half to one acre: two batteries, rotated while one charges. This is the minimum for comfort.
One to three acres: two batteries plus a second charger, or three batteries and one charger. Charging logistics start to matter more than battery capacity.
Three acres and up: treat it as a full-day job. Three or more packs, a fast charger, and a realistic expectation that you are not finishing in an afternoon.
Rural owners describe the realistic version of this. One user reports barely getting through a quarter of their property with both batteries drained and needing three full days to complete the job. Nobody publishes that number in a spec sheet, and it is the one that should set your expectations.
Line loading decides how much you will enjoy the tool
There are three systems. Bump feed taps the head against the ground to advance line, and it is cheap and reliable. Automatic feed spools line on its own when it senses wear, which is what BLACK+DECKER’s Automatic Feed Spool does. Push-button systems such as POWERLOAD and Twist Load have you thread the line yourself once and wind it with a button.
Automatic feed is the feature owners argue about most. Independent roundup testing has found few examples that leave a reliable amount of string extended, and dirty heads are a recurring complaint. A head with no gap for long grass to snag, like the EGO design, tends to survive neglected field work better than a cheap open spool.
Whatever you buy, buy line that matches the head. Proprietary preloaded cartridges create supply problems that are entirely avoidable.
Cut width, weight and the shape of your property
Wider swath means fewer passes. Going from 13 inches to 16 inches cuts the ground you need to cover by roughly a fifth, which compounds fast on an open property. Narrower trimmers earn their place when the work is tight, around beds and along walls, or when weight matters more than coverage.
Weight is the number people regret getting wrong. Anything above 12 pounds needs a shoulder strap, and 18 pounds is a different category of tool entirely. Match the tool to the length of your session, not to your strength on a good day.
Terrain matters too. A long, adjustable or telescoping shaft is essential on slopes and uneven ground, and a pivoting head is worth having if your property has a hillside. A non-telescoping shaft is a genuine problem for shorter users and hard to correct later.
Brush cutter or string trimmer: when to escalate
Nylon line has a limit. Saplings, blackberry canes, woody bramble and dense field edges that have gone uncut for a season will stall a string trimmer no matter what voltage class it runs, and forcing it shortens line life and strains the motor.
For woody growth on a large property, escalate to a brush cutter with a metal blade. Some owners of the DEWALT in this list convert theirs to a saw-blade trimmer, which is the same idea. On very large areas of light growth, a scythe is faster and quieter than any string trimmer. Know which one you need before you buy, because the two tools share a battery and nothing else.
Battery platform loyalty: the decision that costs the most
The battery is the part of the purchase you are most likely to buy again, and platforms are not interchangeable. A 56V ARC pack, a 60V FLEXVOLT pack and a 40V MAX pack all live in separate systems, and each brand’s chargers match only their own packs.
That makes the ecosystem question worth more than a small price difference between two trimmers. If you already own EGO, DEWALT, Milwaukee, RYOBI or Greenworks batteries, buying within that platform is usually the cheapest total cost. If you own none, choose on weight and head design rather than on battery availability.
One more note on packs. Lithium-ion packs stored at full charge in a hot shed lose capacity faster than most buyers expect, and a 3 to 5 year replacement cycle is normal rather than a defect. The same handling logic applies to other lithium-ion gear you own, including the battery-powered emergency kits worth keeping in the house and the kids audio players built for long battery life, so store spare packs the same way rather than leaving them in a vehicle all summer.
Quiet operation and neighbour considerations
A brushless motor is dramatically quieter than a two-stroke engine, though not silent. For most homeowners that is enough to trim at an early hour without a formal complaint, and it removes the fuel smell that neighbours notice first. Low-noise designs such as the BLACK+DECKER combo kit go furthest in that direction.
How we tested
Every pick here was assessed on the same six criteria: sustained cutting power in overgrown growth, usable runtime per pack, line-loading speed and reliability, weight and balance over a long session, noise, and platform expandability. Published runtime was treated as a ceiling, and owner-reported figures were used wherever they contradicted a spec sheet.
We have not affiliated with any of the manufacturers listed, and we do not claim laboratory testing we did not perform. Ratings and review counts are taken from the listings linked on this page and change over time.
Frequently Asked Questions
What is the best string trimmer for a large property?
For most large properties, a 40V to 60V brushless trimmer with a 15-inch or wider cutting swath and at least two batteries is the right answer. Our overall pick is the EGO POWER+ ST1623T, which has a 16-inch Line IQ swath, automatic line feeding and up to 60 minutes on the included 4.0Ah battery.
Which is better for a cordless trimmer, 20V or 40V?
For a large yard, 40V is the better choice. A 20V tool is a light-duty machine that works well for lawn edges and small gardens, but 40V with a 4.0Ah pack is the practical floor for half an acre to two acres, and 56V or 60V is better for anything over two acres or for knee-high growth.
How many batteries do I need for a large yard?
Plan on roughly 25 minutes of actual cutting per high-voltage battery in mixed conditions. Half an acre needs one battery, one to two acres needs two rotated while one charges, and one to three acres needs two batteries plus a second charger so you are not waiting on charging.
How long do battery operated weed eaters last?
Per charge, expect roughly 22 to 30 minutes of real cutting from a high-voltage pack, well short of the figure printed on the box. As a component, a lithium-ion pack usually lasts three to five years depending on heat and storage, after which capacity drops noticeably.
Are EGO trimmers worth it?
For large yards, yes. The Line IQ auto-feed head and POWERLOAD line loading remove the most tedious part of cordless trimming, the 16-inch swath covers ground quickly, and the telescoping carbon fiber shaft suits a range of users. The catch is that the platform is proprietary, so the batteries are an upfront cost unless you already own EGO 56V ARC packs.
Is a string trimmer enough for a large property, or do I need a brush cutter?
A string trimmer handles grass, weeds, fence lines and tree bases. If your property has woody growth such as bramble, saplings or neglected field edges, a brush cutter with a metal blade is the correct tool, because nylon line will stall and wear in that material.
The Verdict for Large Yards
For most large properties, the EGO POWER+ ST1623T is the best of the battery powered string trimmers reviewed here in 2026. It combines a 16-inch cutting swath, a head that reloads itself, a telescoping shaft and the strongest runtime claim in the group, and at 4.4 stars across 2,270 owner ratings it has the best evidence behind it of anything on this list.
Two alternatives are worth your attention. If you already run on the M18 platform, the Milwaukee kit gives you a 16-inch swath without a second battery ecosystem. If bramble and saplings are part of your season, the DEWALT DCST970B has the power to back into it, and you should budget for high-voltage packs because it ships as a bare tool.
Before you buy anything, work out how many packs your property actually needs at 25 minutes each, then check whether the platform is one you already own. That second step is where the real savings live.