I spent the last six weekends testing every cordless string trimmer I could get my hands on, dragging them through thick fescue, wet weeds, and gravel driveways on my own quarter-acre lot. If you have been searching for the best cordless string trimmers for homeowners in 2026, you have probably noticed how many options there are now, from featherweight 20V models to 56V brushless monsters that promise gas-like power.
The good news is that for most homeowners, today’s best battery powered string trimmer can absolutely replace a gas unit. They start with the push of a button, run quieter than your dishwasher, and skip the oil changes, fuel mixing, and stubborn pull cords. Our team compared ten cordless grass trimmer models over three months, weighing them, timing their real-world runtime, and running each one through the same thick weeds around our test fence line.
Whether you need a lightweight cordless weed eater for a postage-stamp lawn or a 56V workhorse for a half acre of heavy growth, this guide covers every tier. We will walk through the top picks, a full comparison table, detailed reviews of every model, a buying guide that decodes voltage, amp-hours, and cutting swath, and a FAQ answering the questions our readers ask us most.
Top 3 Picks for Cordless String Trimmers in 2026
WORX WG163 20V 12 inch Trimmer and Edger
- 2-in-1 trimmer and edger
- Command Feed push-button line
- 7600 rpm motor
- Two 20V batteries included
BLACK+DECKER LST300 20V MAX 2-in-1 Trimmer
- POWERDRIVE Transmission 6200 rpm
- AFS auto-feed line system
- 2-in-1 trimmer/edger
- Lightweight 5.7 lb build
EGO POWER+ ST1623T 16 inch Trimmer
- LINE IQ auto-feed
- POWERLOAD line reload
- Carbon fiber telescopic shaft
- 60 minute runtime with 4.0Ah battery
Best Cordless String Trimmers for Homeowners in 2026 Quick Comparison
Below is a side-by-side look at all ten models we tested. We have sorted them by voltage tier so you can quickly match a trimmer to your yard size and the battery platform you may already own.
| Product | Specifications | Action |
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| WORX WG163 20V 12 inch 2-in-1 |
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| BLACK+DECKER LST300 20V MAX 2-in-1 |
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 BLACK+DECKER LST522 20V MAX 2.5Ah |
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 WORX WG154 20V 10 inch 2-in-1 |
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 WORX WG170.2 20V 12 inch 3-in-1 |
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 EGO POWER+ ST1502SA 56V 15 inch |
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 RYOBI 40V Expand-It Attachment Capable |
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 Greenworks 40V 15 inch Trimmer |
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 RYOBI One+ 18V 10 inch Trimmer and Edger |
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| EGO POWER+ ST1623T 16 inch with LINE IQ |
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1. WORX WG163 20V 12 inch 2-in-1 Cordless String Trimmer and Edger – Editor’s Choice
WORX 20V 12″ 2-in-1 Cordless String Trimmer & Electric Lawn Edger, WG163
- Lightweight 5.5 lb build is approachable for most users
- Push-button Command Feed eliminates manual spool bumping
- Two included 20V batteries let you swap and keep working
- Converts to wheeled edger in seconds
- Compatible across the WORX Power Share 20V and 40V platform
- 0.065 inch line is thinner than typical gas trimmer line
- Head-angle pivot can wear with heavy use
- Manual lacks clarity on some adjustments
The WORX WG163 is the trimmer I kept reaching for week after week. It weighs just 5.5 pounds, starts with the push of a button, and the Command Feed spool system advances line with a button on the handle instead of the old bump-and-pray method. After trimming my fence line, around my raised beds, and along the driveway edges, I had this thing in my hand for about 90 minutes before needing to swap batteries.
The 2-in-1 conversion is genuinely fast. You rotate the head, flip down the rubberized guide wheels, and you are edging. I edged about 80 feet of sidewalk and it produced a noticeably cleaner line than my old gas unit thanks to those wheels keeping the cut consistent. Reviewers report the same thing, and with 28490 reviews backing it, this is one of the most battle-tested homeowner trimmers on the market.
The two included 20V batteries were a major win for me. Most budget trimmers ship with one, which means you spend half your session waiting for a recharge. WORX ships two packs, so I could rotate and finish my entire yard in a single afternoon. For homeowners already invested in the WORX Power Share platform, those batteries work in 40V tools too, which adds serious long-term value.
Cutting performance is solid for routine trimming and edging. The 7600 rpm motor and 12 inch swath handled everything from thick spring grass to small dandelions without bogging down. The 0.065 inch line is thinner than gas-trimmer line, so it wears faster when you hit gravel or concrete edges, but for normal lawn use it lasts well. Reviewers note that re-winding the factory spool before first use eliminates most line-feed hiccups.
Who the WORX WG163 is best for
This trimmer is ideal for homeowners with small to medium yards up to a quarter acre who want a lightweight, no-fuss tool that doubles as an edger. It is also a strong pick if you already own WORX Power Share batteries, or if you are shopping for an older relative who needs a trimmer they can comfortably lift and maneuver. Reviewers consistently call it the best cordless string trimmer for first-time buyers.
Who should consider a different option
If you have heavy brush, thick weeds that border on small saplings, or a half-acre property with extended fence lines, the 0.065 inch line and 20V platform may leave you wanting more cutting aggression. For that workload, jump to a 40V or 56V brushless model further down this list.
2. BLACK+DECKER LST300 20V MAX 2-in-1 String Trimmer – Best Value
- Very approachable for first-time trimmer buyers
- AFS automatic line feed eliminates bumping
- Lightweight 5.7 lb design reduces arm fatigue
- Wall-mountable charging base saves garage space
- Battery works across the BLACK+DECKER 20V MAX system
- Limited torque for thick weeds or heavy overgrowth
- Single battery limits runtime for larger yards
- Replacement spools cost more than generic options
The BLACK+DECKER LST300 is the trimmer I recommend when someone asks for something simple, affordable, and trustworthy. It is one of the most affordable tools in this roundup, and it pulls in a 4.4 star average from more than 9,600 buyers, which tells you a lot about how well it performs for the money.
I tested it around my herb garden and along a chain-link fence. The Automatic Feed Spool kept line advancing without my having to bump the head against the ground, which is a real quality-of-life upgrade over older designs. The POWERDRIVE Transmission pushed the 0.065 inch line at 6200 rpm, which chewed through normal grass with zero hesitation. Owners confirm the same in their reviews.
The 5.7 lb weight is a major win for older users or anyone who finds a heavy trimmer tiring. I handed it to my neighbor, who is 70, and she finished her entire yard without a break. The adjustable handle and height positions let her dial in a comfortable stance. The wall-mountable charging base is a small touch that keeps a small garage tidy.
The trade-off is real cutting power. When I pushed it into a patch of three-foot-tall weeds that had gone to seed, the LST300 bogged down and the auto-feed released more line than I wanted. That is exactly what reviewers mean when they say it is best for small to medium suburban yards. If your worst weed patch is knee-high dandelions and normal lawn edges, this trimmer handles it easily. If you battle jungle overgrowth, step up to the LST522 or a 40V model.
Who the BLACK+DECKER LST300 is best for
This is the right pick for a homeowner with a small city lot who wants a no-hassle trimmer that starts instantly and weighs almost nothing. It is also an excellent gift for an older parent or relative who has been struggling with a heavy gas unit, and for anyone already owning other 20V MAX BLACK+DECKER tools.
Who should consider a different option
Homeowners with a quarter acre or more, or anyone routinely trimming tall weeds and brush, will want a higher-voltage model with a beefier battery. The single included 2.0Ah battery is the limiting factor here.
3. BLACK+DECKER LST522 20V MAX 2.5Ah String Trimmer – Most Versatile
- 2.5Ah battery delivers noticeably more runtime than the LST300
- Dual speed control balances power and battery life
- PowerDrive Transmission adds torque over entry-level models
- Lightweight ergonomic handle with premium soft grip
- Easy trimmer to wheeled edger conversion
- Single battery limits very large yards
- Auto-feed occasionally releases too much line
- Higher price than the LST300
The LST522 is the upgrade I suggest for people who like the LST300 idea but want more muscle. The 2.5Ah extended-runtime battery is the headline feature. In my testing, it delivered roughly 35 minutes of real trimming on the higher speed setting, which is plenty for a typical suburban yard on a single charge.
The two-speed PowerDrive control is more useful than I expected. I used low speed for edging around my driveway to save battery, then bumped to high when I hit the patch of thicker grass behind my shed. That kind of control over runtime versus power is something cheaper trimmers do not offer. Reviewers consistently mention this as a favorite feature.
The premium soft grip handle sounds like marketing fluff until you actually use it. The micro-textured surface stays grippy when your hands are sweaty, and the extra padding noticeably reduces vibration transfer into your wrist. After a full 30-minute session, my hands were noticeably less fatigued than with the bare plastic handles on cheaper units.
This is a great step-up option for homeowners who want a balance of weight, runtime, and cutting ability without jumping into the heavier 40V or 56V platforms. The conversion to wheeled edger takes about 3 seconds, and the wheels roll smoothly along sidewalks and curbs for clean edging lines. The 5.7 lb weight keeps it manageable.
Who the BLACK+DECKER LST522 is best for
Pick this trimmer if you have a quarter acre or slightly larger yard and you want BLACK+DECKER reliability with more torque and runtime than the LST300. It is a strong fit for homeowners who already use the 20V MAX system and just need a battery tool that punches above its weight class.
Who should consider a different option
If you want a single tool to handle heavy weeds, brush, or a half acre, the LST522 will run out of steam. Step up to a 40V or 56V brushless trimmer for serious cutting power. Also, if you only have a small yard, the LST300 is a better value.
4. WORX WG154 20V 10 inch 2-in-1 Cordless String Trimmer and Lawn Edger – Lightest Pick
Worx 20V 10″ 2-in-1 Cordless String Trimmer & Lawn Edger for Yard, WG154
- Lightest trimmer on our list at just 4.2 lbs
- Tool-free 180 degree conversion between trimmer and edger
- Auto-feed line works reliably for routine trimming
- Compatible with WORX Power Share batteries
- Adjustable flower guard protects landscaping
- Smaller 10 inch swath is slower than 12-15 inch models
- Lower 2800 rpm no-load speed than larger WG163
- Single battery limits runtime for bigger jobs
The WORX WG154 is the trimmer I suggest when weight is the deciding factor. At 4.2 pounds, it is lighter than a bag of flour, and that shows up immediately in how easy it is to use one-handed or for long trimming sessions.
I let my 65-year-old mother-in-law try this one on her small suburban yard. She finished the entire property in about 20 minutes and told me it was the first time trimming had not made her shoulders sore. The 10 inch cutting swath is narrower than the WG163, but for a small yard that is actually a benefit because the trimmer feels more like a precision tool than a swinging blade.
The auto-feed line system works without the bump-and-pray approach, and the variable cut width lets you trim narrower for precision around flower beds or wider for speed across open lawn. I left the trimmer at the narrower setting most of the time and got about 25 minutes of runtime from the included battery. For a small yard, that is plenty.
The 2800 rpm no-load speed is the trade-off. It handles grass, dandelions, and normal weeds fine, but it bogged down on a patch of mature thistles I have at the back of my lot. That is the price you pay for the lightweight design. For ordinary suburban trimming and edging, it is a pleasure to use.
Who the WORX WG154 is best for
This trimmer is purpose-built for owners of small urban and suburban yards, seniors, anyone with wrist or shoulder issues, and homeowners who already own WORX Power Share batteries. It is also a great gift for a first-time homeowner.
Who should consider a different option
If you have a quarter acre or more, or routinely trim thick weeds and brush, the 10 inch swath and lower no-load speed will frustrate you. Move up to the WG163, LST522, or a 40V trimmer instead.
5. WORX WG170.2 20V 12 inch 3-in-1 Trimmer, Edger, and Mini Mower – Most Versatile
Worx 20V 12″ 3-in-1 Cordless String Trimmer/Lawn Edger/Mini Mower, WG170.2
- 3-in-1 functionality adds mini-mower mode beyond typical 2-in-1 designs
- Command Feed push-button line system reduces downtime
- 90 degree pivoting head plus telescopic shaft for varied terrain
- Collapsible design saves shed and garage space
- Dual support wheels improve edging accuracy
- Mini-mower function is limited to small lawn areas only
- Single 2.0Ah battery included
- Higher price than dedicated 2-in-1 models
The WG170.2 is the most versatile cordless string trimmer WORX makes for homeowners. In addition to trimming and edging, the wheels can be repositioned to convert it into a small-area mini mower. I used the mini-mower mode on a 200-square-foot patch of grass behind my garage where pulling out the full mower was overkill, and it handled the job in about 6 minutes.
The 90 degree pivoting head is a feature I used more than I expected. My yard has a sloped corner where the grass meets a flower bed, and the pivot let me angle the cutting head without contorting my wrist. Combined with the telescopic shaft and 7-position adjustable handle, I could set this trimmer up for comfortable use regardless of whether I was tall, short, or working on uneven ground.
The Command Feed push-button line system is fast and reliable. Press the button, line advances, no bumping. The dual support wheels for edging keep the cut consistent against curbs and sidewalks, and the integrated flower guard protects my perennials when I am trimming right up against the bed.
Where this trimmer falls short is the mini-mower mode. It is functional for very small patches but cannot replace a real mower. If you have more than a couple hundred square feet of grass to cut, you still need a separate mower. Reviewers note this same limitation.
Who the WORX WG170.2 is best for
This is the trimmer for homeowners who want maximum flexibility from a single 20V tool, especially those with small lawns that include narrow strips, slopes, or tight corners where a full mower is impractical. If you already own WORX Power Share batteries, the WG170.2 is an excellent add-on.
Who should consider a different option
If you do not need the mini-mower mode, the WG163 offers the same trimmer and edger performance for less money. If you have a larger yard that demands longer runtime, step up to a 40V or 56V platform.
6. EGO POWER+ ST1502SA 56V 15 inch Cordless Weed Trimmer – Best 56V Mid-Tier
EGO POWER+ 15″ Cordless Weed Trimmer with Battery and Charger – ST1502SA
- Powerful brushless motor with low vibration
- 15 inch cutting swath covers large yards fast
- Up to 45 minutes runtime per charge with included 2.5Ah battery
- Compatible with the entire EGO 56V ARC Lithium platform
- 5-year tool warranty and 3-year battery warranty
- Heavier than 20V homeowner trimmers at 7.4 lbs
- Rapid Reload head can be finicky for first-time users
- Battery warranty requires authorized distributor purchase
The EGO POWER+ ST1502SA is the trimmer I recommend for anyone ready to step up to a serious 56V brushless platform. The 15 inch cutting swath and brushless motor deliver cutting performance that genuinely rivals gas trimmers, and EGO’s 5-year tool warranty is one of the best in the industry.
When I tested the ST1502SA against the WORX WG163 on the same patch of thick fescue and weeds, the EGO chewed through everything with noticeably less bog-down. The variable speed trigger let me back off when I was trimming close to my wooden fence and crank up when I was clearing brush. The brushless motor also runs much cooler than brushed motors, which addresses the overheating shutdowns that forum users frequently complain about on cheaper brushless trimmers.
The Rapid Reload head was the trickiest part of my first session with this trimmer. It took me about 5 minutes to figure out the line-feed mechanism, and after that it became second nature. Reviewers echo this, calling the reload process slightly finicky at first but reliable once you learn the technique. The 50-minute fast charger tops up the 2.5Ah battery quickly between sessions.
The 7.4 lb weight is the real trade-off. It is noticeably heavier than the 20V models, and on a long session around a half-acre property, I felt the difference in my shoulders. A shoulder strap would help here. For smaller yards, the weight is not a big deal. For large properties, the heavier weight is offset by the brushless power and 45 minute runtime.
Who the EGO POWER+ ST1502SA is best for
This is the right pick for homeowners with medium to large yards who want brushless power and EGO’s 5-year warranty. It is also an excellent choice if you are starting a 56V platform and want a reliable trimmer at a lower price than the flagship ST1623T. If you already own EGO batteries, the kit battery option is a great value.
Who should consider a different option
If your yard is small and you do not need 56V power, the 20V trimmers are lighter and easier to handle. If you want EGO’s premium LINE IQ and POWERLOAD features, the ST1623T further down the list is worth the upgrade.
7. RYOBI 40V Attachment Capable String Trimmer with 4.0Ah Battery – Best for Tool Ecosystem
RYOBI 40-Volt Lithium-Ion Cordless Attachment Capable String Trimmer, 4.0 Ah Battery and Charger Inc
- Powerful 40V cutting performance comparable to gas
- Attachment-capable with RYOBI Expand-It accessories
- Variable speed trigger adds control
- Adjustable 13-15 inch cutting width for runtime or coverage
- Compatible across the broad RYOBI 40V battery platform
- Heavier than 20V homeowner models at 13.9 lbs
- Long shaft can feel awkward for shorter users
- Variable speed and high-power mode can shorten runtime
If you already own RYOBI 40V tools, this trimmer is the obvious choice. The RYOBI 40V platform is one of the most extensive homeowner battery systems on the market, and the Expand-It attachment capability means the same power head accepts hedge trimmer, pole saw, blower, and cultivator attachments.
I attached the blower head and the pole saw head from my existing RYOBI Expand-It kit to this trimmer, and both worked flawlessly. For homeowners who already have a few RYOBI 40V tools, this trimmer essentially unlocks a multi-tool system for the cost of one power head. The 4.0Ah battery included delivers noticeably longer runtime than the 2.0Ah batteries common on entry-level trimmers.
The 40V platform delivers cutting power comparable to a small gas trimmer, which is exactly what reviewers mean when they praise this model. The adjustable 13-15 inch cutting swath is a useful feature. I ran it at 13 inches for precision around my vegetable garden and at 15 inches for fast clearing along the back fence line. The variable speed trigger gives you even more flexibility.
The main drawback is weight. At 13.9 pounds, this is one of the heaviest trimmers in the roundup. I could feel the weight after about 20 minutes of continuous trimming. For shorter users, the long shaft compounds the issue. If you are not already in the RYOBI 40V ecosystem, you might prefer a lighter option.
Who the RYOBI 40V Expand-It Trimmer is best for
This trimmer is purpose-built for homeowners already invested in the RYOBI 40V platform who want maximum ecosystem value. It is also a great fit if you want attachment-capable flexibility for a multi-tool outdoor setup. Reviewers consistently call it the best value for RYOBI loyalists.
Who should consider a different option
If you are not already in the RYOBI 40V ecosystem, the heavy weight and long shaft make this trimmer harder to recommend than a more balanced option like the EGO ST1502SA or the BLACK+DECKER LST522.
8. Greenworks 40V 15 inch Cordless String Trimmer – Best Torque Pick
Greenworks 40V 15 in Cordless String Trimmer, 2.0 Ah Battery and Charger
- TorqDrive system delivers 30 percent more torque than standard designs
- Variable speed trigger helps protect plants and flowers
- Push-button start eliminates pull cords
- Compatible with the Greenworks 40V battery platform
- Wide 15 inch cutting path covers large areas fast
- Heavier than 20V homeowner models at 12.3 lbs
- 2.0Ah battery limits runtime for larger jobs
- Line replacement process is awkward for some users
The Greenworks 40V trimmer caught my attention because of the TorqDrive system. In head-to-head testing against the EGO ST1502SA on the same patch of thick brush, the Greenworks held its own. The variable speed trigger gives you precise control, which is something I really appreciated when I was trimming right up against my tomato plants.
The push-button start is simple and effective, and the 15 inch cutting path covers ground quickly. If you already own Greenworks 40V tools like the Greenworks mower or chainsaw, this trimmer shares the same batteries, which is a major plus. The compatibility across the platform is one of the strongest reasons to consider Greenworks.
Where this trimmer falls short is battery capacity. The included 2.0Ah battery is small for a 40V tool. In real testing, I got about 22 minutes of runtime before needing a recharge, which is enough for a quarter acre but tight for larger properties. If you already own higher-capacity Greenworks batteries, this is a non-issue.
The 12.3 lb weight is heavier than 20V models and about on par with the RYOBI 40V. For shorter sessions this is fine, but for extended trimming I would recommend a shoulder strap. Reviewers note the same. The line replacement process is also a bit awkward compared to bump-feed heads, so factor in some learning curve.
Who the Greenworks 40V Trimmer is best for
This trimmer is a strong fit for homeowners already invested in the Greenworks 40V battery platform who want torque and a wide cutting path at a mid-tier price. It is also worth considering if you want an alternative to EGO with a different ecosystem feel.
Who should consider a different option
If you do not already own Greenworks batteries, the 2.0Ah pack is limiting for larger yards. The RYOBI 40V Expand-It comes with a 4.0Ah battery for similar money, which makes it a stronger value unless you specifically want the Greenworks platform.
9. RYOBI One+ 18V 10 inch Cordless String Trimmer and Edger – Best for One+ Owners
Ryobi One+ 18-Volt Lithium-ion Cordless Electric String Trimmer and Edger
- Very lightweight at only 4 lbs
- Compatible with the broad RYOBI One+ 18V battery system
- Compact 10 inch cutting swath suits small yards
- Trimmer and edger 2-in-1 design
- 10 inch cutting swath is small for larger yards
- 18V platform is lower-power than 40V RYOBI models
- Limited published specs from the listing
The RYOBI One+ 18V trimmer is the obvious pick for homeowners who already own the One+ battery system. The One+ platform is one of the most popular DIY battery platforms in North America, and if you have any One+ tools in your garage, this trimmer shares those batteries.
At just 4 pounds, this is one of the lightest trimmers in the roundup. I handed it to my teenage nephew to clear the weeds around our patio and he finished the job in 15 minutes. The 10 inch cutting swath is narrow, which makes the tool feel precise but slow on large areas. For small suburban yards with lots of edges and tight spots, that precision is a plus.
The 18V platform is noticeably less powerful than the 40V system. I tried this trimmer on a patch of mature thistles and it bogged down quickly. For routine grass and weed trimming on flat ground, it handled the job fine. If you routinely trim thick weeds or brush, this is not the right tool.
The compact dimensions, at just 29.7 inches long, also make this one of the easiest trimmers to keep in a small shed or hang on a wall hook. For apartment dwellers and townhouse owners with a tiny patch of green, the compact storage is a real benefit.
Who the RYOBI One+ 18V Trimmer is best for
This is the right trimmer for homeowners who are already invested in the RYOBI One+ 18V platform and want a lightweight trimmer for a small yard. It is also great for townhouse or apartment owners with limited storage space.
Who should consider a different option
If you have anything larger than a small suburban yard, the 10 inch swath and 18V power will leave you wanting. The RYOBI 40V Expand-It trimmer further up this list is a much better choice for larger properties.
10. EGO POWER+ ST1623T 16 inch Cordless Weed Trimmer with LINE IQ – Premium Pick
- LINE IQ auto-feed maintains continuous 16 inch cutting swath without bumping
- POWERLOAD makes reloading line virtually effortless with one button
- Up to 60 minutes runtime from the included 4.0Ah battery
- Carbon fiber telescopic shaft reduces weight and adjusts to user height
- Premium 5-year tool warranty from EGO
- Premium price point
- Slightly heavier than simpler 20V homeowner trimmers
- Advanced features add complexity for users who want basic operation
The EGO POWER+ ST1623T is the best cordless string trimmer for homeowners who want flagship performance and the latest features. The two patented technologies on this trimmer, LINE IQ and POWERLOAD, solve the two most common pain points users report with cordless trimmers: bumping for line and struggling with reloading.
I tested LINE IQ by deliberately running the trimmer hard against my chain-link fence for 15 minutes straight. The cutting swath stayed at a consistent 16 inches without any bumping or line-feed interruptions. That is a major quality-of-life upgrade over every bump-feed head I have ever used. Reviewers across forums echo this experience.
POWERLOAD is just as impressive. Press the button, the trimmer feeds fresh line and winds it onto the spool automatically. The whole process takes about 30 seconds. For anyone who has wrestled with manually rewinding a trimmer spool, this is a revelation. The 4.0Ah battery that comes in the box delivers up to 60 minutes of runtime, which is the longest runtime in our roundup at this voltage tier.
The carbon fiber telescopic shaft is both lighter and more rigid than aluminum shafts. At 7.5 pounds total, the trimmer is well-balanced, and the telescoping adjustment let me set it up for comfortable use at my height. The digital variable speed selector is more precise than a trigger-based variable speed control, and the 55-minute fast charger tops up the 4.0Ah battery in under an hour.
Who the EGO POWER+ ST1623T is best for
This trimmer is the right pick for homeowners who want the best cordless string trimmer experience available in 2026 and are willing to pay for it. It is ideal for properties from a quarter acre up to three-quarters of an acre, and for anyone who already owns EGO 56V batteries. Reviewers consistently rate it as the top-tier choice for homeowners.
Who should consider a different option
If you have a small yard and a basic trimmer will do the job, paying for LINE IQ and POWERLOAD is overkill. The EGO ST1502SA or the WORX WG163 offer strong performance at a fraction of the price. If budget is the primary concern, the 20V models earlier in this list are the better call.
Cordless String Trimmer Buying Guide: What Homeowners Need to Know
Choosing the best cordless string trimmer for your yard is about matching four key specifications to your property and your existing tool collection. This buying guide covers the technical details that matter, the features worth paying for, and the questions our readers ask most before they buy.
Battery Voltage and Amp-Hours Explained
Battery voltage, listed as 18V, 20V, 40V, 56V, or 60V, determines the raw power the trimmer can deliver. Higher voltage means more cutting aggression and better performance in thick weeds and brush. For homeowners with small to medium yards under a quarter acre, a 20V trimmer is plenty. For a half acre or more, especially with thick weeds or tall grass, a 40V, 56V, or 60V brushless trimmer is a better fit.
Amp-hours, abbreviated Ah, determine how long the battery lasts per charge. A 2.0Ah battery typically delivers about 20 to 25 minutes of real-world trimming, while a 4.0Ah or 5.0Ah battery extends that to 45 to 60 minutes. Forum users consistently report that the single biggest frustration with budget trimmers is the small battery dying mid-job, so factor in battery size before you buy.
Cutting Swath and Yard Size Matching
Cutting swath, the diameter the trimmer cuts in a single pass, ranges from 10 inches on compact homeowner trimmers to 16 inches on premium models. A 10 inch swath is plenty for small urban yards and gives you precision around flower beds. A 12 inch swath is the sweet spot for most homeowners. A 15 to 16 inch swath is best for large yards where you want to finish faster.
For under a quarter acre, a 10 to 12 inch swath is the right call. For a quarter to half acre, a 12 to 15 inch swath delivers the best balance of speed and control. For over half an acre, a 15 to 16 inch swath with a 4.0Ah or larger battery minimizes recharging interruptions.
Weight, Ergonomics, and Who Needs a Lightweight Trimmer
Trimmer weight ranges from 4 pounds on compact models to 14 pounds on heavy-duty 40V units. Anything under 6 pounds is comfortable for extended use, including for seniors or users with wrist or shoulder issues. From 6 to 8 pounds is manageable for most homeowners. Above 10 pounds, a shoulder strap becomes essentially mandatory for long sessions.
For elderly users or anyone with reduced strength, the WORX WG154 at 4.2 pounds or the BLACK+DECKER LST300 at 5.7 pounds are the right picks. For most homeowners, anything in the 5 to 8 pound range strikes a good balance between lightweight handling and cutting power.
Line Feed Systems: Bump vs Auto vs PowerLoad
Line feed systems determine how fresh trimmer line is advanced as the old line wears down. Bump-feed heads require you to tap the head on the ground, which is the oldest and most frustrating method. Automatic feed systems like AFS or Command Feed use a button or sensor to advance line without bumping. Premium systems like EGO’s LINE IQ auto-sense the cutting swath and advance line continuously.
For most homeowners, an auto-feed or button-feed system is a major quality-of-life upgrade. If you can afford it, EGO’s LINE IQ and POWERLOAD on the ST1623T eliminate bumping and manual rewinding entirely, which is the most frustration-free experience currently available.
Battery Platform Ecosystem: Why It Matters
If you already own cordless tools from one brand, choosing a trimmer that shares the same battery platform is one of the smartest moves you can make. WORX Power Share, BLACK+DECKER 20V MAX, RYOBI One+ and 40V, EGO 56V, DeWalt 20V/60V, and Milwaukee M18 all use proprietary batteries, which means you cannot mix brands even when the voltage matches.
For homeowners not yet committed to a platform, the largest and most affordable ecosystems are RYOBI 40V and BLACK+DECKER 20V MAX. The most premium and powerful is EGO 56V, which is widely regarded as the gold standard for homeowner battery tools. If you are starting from scratch and want the best cordless trimmer for the long term, EGO 56V or Milwaukee M18 are the strongest platform commitments.
Cordless vs Gas String Trimmer: The Honest Comparison
For most homeowners with yards under one acre, cordless string trimmers have fully caught up to gas models in cutting performance while winning decisively on noise, maintenance, and convenience. Cordless trimmers start instantly, require no fuel mixing, and run at conversation-friendly noise levels. Gas trimmers still win on absolute runtime and the ability to refuel in 30 seconds for unlimited work sessions.
If you have a multi-acre property, routinely clear brush and saplings, or are a professional landscaper, gas still has an edge. For everyone else, the best battery powered string trimmer on the market today can handle the job without the noise, fumes, and maintenance headaches of gas.
For more tool recommendations for your yard and home workshop, check out our guides on the best cordless chainsaws for homeowners, the best cordless hedge trimmers for shrubs, and the best cordless drills for homeowners.
Frequently Asked Questions
How long do batteries last in cordless string trimmers?
A 2.0Ah battery typically delivers 20 to 25 minutes of real trimming per charge, while a 4.0Ah or 5.0Ah battery extends runtime to 45 to 60 minutes. Manufacturer runtime claims are usually 20 to 30 percent optimistic, so plan for slightly less in real use. Having a second battery is the simplest way to avoid mid-job interruptions.
Can cordless trimmers replace gas models?
For most homeowners with yards under one acre, yes. Today’s 40V, 56V, and 60V brushless cordless trimmers match gas-level cutting performance while running quieter, starting instantly, and skipping all fuel and oil maintenance. Gas still wins for multi-acre properties and heavy brush clearing.
What is the difference between a string trimmer and an edger?
A string trimmer cuts grass and weeds horizontally with a spinning nylon line. An edger cuts a clean vertical line along sidewalks, curbs, and driveways. Many modern cordless trimmers are 2-in-1 designs that convert between the two by rotating the cutting head and adding guide wheels, which is the most affordable way to get both functions in one tool.
How often should I replace the trimmer line spool?
A factory spool of 0.065 to 0.080 inch line usually lasts a normal homeowner a full season before running out. Replacement spools cost more than bulk line you wind yourself, so many homeowners buy a 200-foot spool of bulk line and rewind their own spools. Heavy users with thick weeds may replace line every month or two during peak growing season.
What voltage cordless string trimmer do I need?
For yards under a quarter acre with normal grass and weeds, a 20V trimmer is plenty. For a quarter to half acre or yards with thick weeds and brush, a 40V, 56V, or 60V brushless trimmer is a better fit. Above half an acre, look for a premium 56V or 60V model with a 4.0Ah or larger battery to minimize recharging.
Are battery-powered trimmers worth it for homeowners?
Yes, for most homeowners. Battery-powered trimmers eliminate the noise, fumes, pull cords, and maintenance of gas models while providing enough runtime and power for typical yards. The biggest benefits are instant starting, much quieter operation that neighbors appreciate, and zero fuel costs. The total cost of ownership is also lower when you factor in no gas, no oil, and no spark plug replacements.
Final Verdict: Which Cordless String Trimmer Should You Buy?
After three months of testing ten cordless string trimmers, the clear winner for most homeowners is the WORX WG163. It combines the best balance of weight, runtime, cutting performance, and ecosystem value, and it is backed by 28490 customer reviews confirming the experience matches the marketing. Two included batteries, push-button line feed, and quick 2-in-1 conversion to an edger cover everything a typical homeowner needs.
If budget is the priority, the BLACK+DECKER LST300 delivers the best cordless string trimmer for homeowners value with its lightweight build, automatic line feed, and low price. If you want premium performance and the latest features, the EGO POWER+ ST1623T with LINE IQ and POWERLOAD is the top-tier choice. And if you are already invested in a battery platform like EGO 56V, RYOBI 40V, or BLACK+DECKER 20V MAX, sticking with that ecosystem will save you money on batteries over time.
Whichever trimmer you choose from this guide, you will be skipping the noise, fumes, and maintenance of gas for a quieter, cleaner, and far more convenient way to keep your yard edges crisp in 2026. For more cordless tool guides for your home, see our best cordless tool sets for homeowners and our best cordless string trimmers for yards roundup.