I spent three months testing cordless string trimmers across lawns ranging from tiny city courtyards to sprawling half-acre properties. If you are searching for the best cordless string trimmers in 2026, you want something that actually finishes the job without a dead battery halfway through. Gas trimmers are loud, smelly, and need constant maintenance. Battery-powered weed eaters have closed the power gap dramatically, and I want to show you exactly which ones are worth your money.
Our team evaluated 12 models from EGO, WORX, Greenworks, BLACK+DECKER, and RYOBI. We measured runtime in real-world conditions, tested line feed reliability, weighed each unit for fatigue over extended sessions, and compared cutting power against thick weeds and edging tasks. You can also check out our current string trimmer deals page for active discounts on many of these models.
What surprised me most during testing was how much the battery ecosystem matters. A trimmer is rarely a one-tool purchase. If you already own EGO 56V batteries, staying in that ecosystem saves you $100+ on each additional tool. The same logic applies to WORX Power Share 20V, Greenworks 40V, and RYOBI 40V platforms.
I also paid close attention to the complaints that show up again and again on Reddit’s r/lawncare and r/landscaping communities. Battery degradation, line tangling, and weight-related fatigue are the big three pain points. Every recommendation below addresses at least one of these issues head-on.
Our Top 3 Tested Cordless String Trimmers for 2026
EGO POWER+ ST1623T 16-Inch String Trimmer
- LINE IQ auto-feed
- POWERLOAD auto-wind
- Carbon fiber shaft
- 60 min runtime
WORX WG170 3-in-1 Trimmer/Edger/Mower
- 3-in-1 functionality
- 5.5 lbs lightweight
- 2 batteries included
- Command Feed system
WORX WG163 12-Inch Trimmer and Edger
- 2-in-1 trimmer/edger
- 5.5 lbs lightweight
- 2 batteries included
- Command Feed
The EGO ST1623T takes the top spot thanks to its LINE IQ auto-sensing technology and carbon fiber shaft. For shoppers watching their budget, the WORX WG170 delivers three tools in one at a fraction of the cost. The WORX WG163 remains the crowd favorite with nearly 28,000 reviews and a price that is hard to beat.
Comparing the Market’s Best Cordless String Trimmers in 2026
1. WORX WG163 Cordless String Trimmer and Edger – Lightweight 2-in-1 Versatility
WORX 20V 12" 2-in-1 Cordless String Trimmer & Electric Lawn Edger, WG163
12 inch cutting width
20V Power Share
5.5 lbs
7600 RPM
2 batteries included
✓ The Good
- 2-in-1 trimmer and edger
- Command Feed instant line feed
- Tilts 90 degrees for slopes
- Compatible with WORX 20V and 40V tools
✕ The Bad
- Small batteries need frequent charging
- Trigger may wear over time
The WORX WG163 is the trimmer I recommend most often to friends with small to medium yards. At just 5.5 pounds, you can wield it one-handed if needed. The conversion from trimmer to edger takes about five seconds, and the rubberized guide wheels make clean sidewalk edges surprisingly easy.
With nearly 28,000 reviews and the number one best-seller rank in string trimmers on Amazon, this model has earned its reputation. The Command Feed system lets you push a button to advance line instead of bumping the head on the ground, which saves your spool and your patience.
What impressed me most was the 90-degree head tilt. If you have sloped terrain or need to trim along retaining walls, this feature alone justifies the purchase. The adjustable spacer guard also protects your flower beds from accidental line damage.
Command Feed Line System Performance
The push-button Command Feed is genuinely better than bump-feed for most homeowners. You tap a small button on the shaft, and the line advances exactly as much as you need. No guessing, no wasted line, no bruised knees from tapping the head on concrete.
One thing to note: WORX uses 0.065-inch line, which is thinner than the 0.095-inch line on pro-grade trimmers. This is fine for grass and light weeds but will snap if you hit woody stems or chain-link fencing.
Battery Life and Charging Reality
The two included 20V Power Share batteries are small, rated at about 1.5Ah each. In my testing, each battery lasted roughly 12 to 15 minutes of continuous trimming. With both batteries charged, you get about 25 to 30 minutes total, which is enough for a typical quarter-acre yard.
The real advantage here is ecosystem compatibility. These same batteries power WORX leaf blowers, hedge trimmers, and even drills. If you invest in the WORX platform, the batteries pull double duty.
Best For
This trimmer is ideal for homeowners with small to medium yards (up to a quarter acre) who want a lightweight, versatile tool without spending a fortune. It shines as an edger and is perfect for quick touch-ups after mowing.
2. BLACK+DECKER LSTE525 20V MAX String Trimmer and Edger – Smart Power Management
✓ The Good
- EasyFeed push-button line advance
- 2-speed control for power or runtime
- Converts to wheeled edger
- PowerDrive Transmission
✕ The Bad
- Small batteries have limited runtime
- Plastic trigger may wear over time
BLACK+DECKER’s LSTE525 brings a clever 2-speed control system that lets you choose between maximum cutting power or extended runtime. I found this feature genuinely useful. When hitting thick weeds near the fence line, high-speed mode powered through. For light grass edging along the driveway, low-speed mode stretched the battery another 5 to 7 minutes.
The EasyFeed system works similarly to WORX’s Command Feed. Push a button, and line advances without bumping. The PowerDrive Transmission is a fancy name for a gear system that increases torque at the cutting head, and I noticed it handled thick crabgrass better than other 20V trimmers I tested.
At 5.3 pounds, this is one of the lightest trimmers in our lineup. The premium micro-texture grip is surprisingly comfortable during longer sessions. The adjustable handle and shaft telescoping mean it works for both shorter and taller users.
2-Speed Control Real-World Impact
Low speed runs around 6,000 RPM and extends battery life by roughly 30 percent. High speed hits the full 7,200 RPM for tough vegetation. I recommend starting on low and switching to high only when you hear the motor bogging down in thick grass.
This control makes a real difference for battery management. On low speed, each battery lasted about 18 minutes in my testing versus 12 minutes on high speed.
20V MAX Ecosystem Value
The BLACK+DECKER 20V MAX system is one of the largest cordless tool platforms on the market. The batteries included with this trimmer work with drills, circular saws, flashlights, and dozens of other tools. If you already own BLACK+DECKER 20V tools, this trimmer essentially costs you nothing extra for batteries.
Best For
This model suits homeowners who want smart power management in a lightweight package. The 2-speed control makes it adaptable for both delicate edging work and heavier weed clearing on small properties.
3. Greenworks 40V Trimmer and Blower Combo Kit – Two-Tool Value Package
Greenworks 40V 12 in String Trimmer & 390 CFM Blower Combo, 2.0 Ah Battery
12 inch trimmer
40V system
390 CFM blower
7500 RPM
2.0Ah battery
3-year warranty
✓ The Good
- Includes both trimmer and leaf blower
- 40V system compatible with 8+ tools
- 67dB quiet operation
- Cuts through 1-inch weeds
✕ The Bad
- Heavier combo package weight
- Battery life limited for extended use
This Greenworks combo kit gives you a string trimmer and a 390 CFM leaf blower for about the same price as a standalone EGO trimmer. If you need both tools, this is one of the best values I found across all 12 models tested. The trimmer alone weighs about 8 pounds and features a 12-inch auto-feed cutting head.
The 40V system is Greenworks’ mid-tier platform, compatible with over eight different tools including chainsaws, hedge trimmers, and pole saws. The 2.0Ah battery that comes in this kit charges in about 60 minutes and delivered roughly 20 minutes of trimming time in my tests.
The leaf blower pushes 390 CFM at 110 MPH, which is powerful enough to move wet leaves off concrete. The 67dB noise rating means you can use it early in the morning without annoying neighbors, a nice change from gas blowers that hit 90+ dB.
Trimmer Cutting Performance
The 0.065-inch auto-feed line slices through grass and light weeds without issue. Greenworks claims it cuts through 1-inch weeds, and I confirmed this against dandelion stalks and small thistle plants. Against woody brush or saplings, the line snapped predictably.
The auto-feed system worked reliably throughout my testing. Line advances automatically when you release and re-engage the trigger, which means no bumping or button-pushing needed.
390 CFM Blower Capability
The included blower is not an afterthought. At 390 CFM and 110 MPH, it handles driveway cleanup, deck clearing, and light leaf removal with ease. The variable speed trigger lets you dial back for delicate areas like mulch beds where full power would scatter everything.
Best For
This combo kit is perfect for new homeowners setting up their lawn care toolkit. You get two essential tools that share one battery platform, saving money and storage space compared to buying separately.
4. BLACK+DECKER LST136 40V MAX String Trimmer – Power and Control
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)
13 inch cutting width
40V MAX
7.8 lbs
8500 RPM
PowerCommand Dial
telescoping pole
✓ The Good
- PowerCommand Dial for power or runtime
- Automatic Feed Spool no bumping
- 8500 RPM high speed
- Fast 2-hour charging
✕ The Bad
- Not Prime eligible
- Single battery included
The BLACK+DECKER LST136 steps up to the 40V platform and adds a 13-inch cutting width, giving you more coverage per pass than the 12-inch models. The 8,500 RPM motor is the fastest in this price range, and the PowerCommand Dial lets you switch between power and runtime modes without changing batteries.
I tested this trimmer on a half-acre lot with a mix of lawn grass and weedy edges. On power mode, it handled thick Bermuda grass along the fence line without slowing down. On runtime mode, the battery lasted nearly 25 minutes, enough to finish the entire property on one charge.
The telescoping pole adjusts to your height, which matters more than you might think. If you are over six feet tall, a short trimmer forces you to hunch, causing back fatigue after 15 minutes. This model extends enough to accommodate users well over six feet comfortably.
PowerCommand Dial Effectiveness
The dial gives you three settings. Max power delivers full 8,500 RPM for tough weeds. Max runtime dials back to about 6,500 RPM and extends battery life by roughly 40 percent. The middle setting is a sweet spot for normal lawn edging.
I found myself using the middle setting about 70 percent of the time. It provides enough power for standard trimming while preserving battery for the full job.
Automatic Feed Spool Reliability
The AFS system advances line automatically based on motor speed. When the line wears short, the system detects the change and feeds more. In three weeks of testing, I never had to manually advance the line or deal with tangling.
Best For
This trimmer fits homeowners with medium yards (quarter to half acre) who need more cutting power than 20V models provide. The telescoping pole and PowerCommand Dial make it adaptable for multiple users and varying conditions.
5. WORX WG170 3-in-1 Cordless Trimmer, Edger, and Mini Mower – Maximum Versatility
WORX 20V 12" 3-in-1 Cordless String Trimmer/Lawn Edger/Mini Mower, WG170
12 inch cutting width
20V Power Share
5.5 lbs
7600 RPM
3-in-1 functionality
2 batteries
✓ The Good
- 3-in-1 trimmer edger and mini mower
- 7 handle adjustments 6 rotating head settings
- Lightweight at 5.5 lbs
- Includes 3 spools and 2 batteries
✕ The Bad
- 5 hour charging time
- Requires assembly
The WORX WG170 is the most versatile trimmer I tested. It transforms into three different tools: a string trimmer, an in-line edger, and a mini lawn mower for small patches. The mini mower mode uses the cutting head horizontally with support wheels, perfect for cleaning up narrow strips of grass along sidewalks that your full-size mower cannot reach.
At 5.5 pounds with seven handle adjustments and six rotating head settings, nearly anyone can find a comfortable operating position. The shaft is a full foot longer than the previous WORX generation, which taller users will appreciate immediately.
This model currently holds the number five best-seller rank in string trimmers on Amazon. The value proposition is hard to argue with: you get the tool, two batteries, a charger, three spare spools, support wheels, and a guard all in one package.
3-in-1 Mini Mower Mode
The mini mower mode is more useful than I expected. When you pivot the head to horizontal and attach the support wheels, it functions like a very narrow push mower. I used it to clean up grass strips between my raised garden beds where a full mower would not fit.
It will not replace your lawn mower, but for tight spaces and edge cleanup, the mini mower mode saves you from hand-pulling grass in awkward spots.
Handle and Head Adjustability
Seven handle positions mean you can adjust the auxiliary handle height and angle for your specific build. Six rotating head settings let you angle the cutting head for sloped terrain, vertical edging, or tight corners. No other trimmer in this price range offers this level of adjustability.
Best For
This is the best all-around value pick for homeowners with small to medium yards who want maximum tool versatility without buying separate equipment. The 3-in-1 design covers trimming, edging, and detail mowing in one affordable package.
6. WORX WG928 Trimmer and Leaf Blower Kit – Dual-Tool Power Package
WORX 20V 12" Cordless String Trimmer & 360CFM Leaf Blower Kit, WG928
12 inch trimmer
20V PowerShare
360 CFM blower
2 x 2.0Ah batteries
Command Feed
✓ The Good
- Versatile trimmer and edger combo
- Powerful 360 CFM turbine blower
- Two batteries with fast charging
- Lightweight design
✕ The Bad
- Battery life limited for large properties
- Line breaks on tough weeds
- Shaft may be short for tall users
The WORX WG928 bundles a 12-inch string trimmer with a turbine-style leaf blower that pushes 360 CFM at 75 MPH. Buying these tools separately would cost significantly more, and you get two 2.0Ah batteries and a charger included in the kit.
The blower uses jet engine turbine technology that delivers impressive airflow for its 4.4-pound weight. During testing, it cleared dry leaves off my driveway in a single pass and handled grass clippings on the sidewalk with no problem.
The trimmer portion uses the same Command Feed push-button line system as other WORX models. It converts to an edger with a simple head pivot. At 5.3 pounds for the trimmer alone, it is easy to maneuver around obstacles.
360 CFM Blower Performance
360 CFM is solid for a cordless blower in this price range. It handles dry leaves, grass clippings, and light debris without struggle. For wet leaves or heavy acorn cleanup, you may need to make multiple passes or get closer to the ground.
The variable speed control lets you dial back airflow for delicate areas. Full blast near mulch or gravel will send debris everywhere, so the throttle control is genuinely useful.
Two-Battery System Advantage
Having two 2.0Ah batteries means you can charge one while using the other. In practice, this eliminates downtime for most small to medium yard jobs. The batteries are also compatible with every other WORX Power Share 20V tool.
Best For
This kit targets homeowners who need both a trimmer and a blower but want to stay within the WORX 20V battery ecosystem. It is an excellent starter kit for someone building a cordless lawn tool collection.
7. Greenworks 40V 12-Inch Cordless String Trimmer – Variable Speed Precision
Greenworks 40V 12 in Cordless String Trimmer, 2.0 Ah Battery and Charger
12 inch cutting width
40V system
0.065 inch dual line
variable speed
2Ah battery
3-year warranty
✓ The Good
- Auto feed line system
- Variable speed control for precision
- Lightweight ergonomic design
- 3-year tool and battery warranty
✕ The Bad
- May struggle with thick weeds
- 12 inch width limiting for large areas
This Greenworks 40V trimmer features a variable-speed trigger that I found genuinely useful for precision work. Feather the trigger for light grass along flower beds, squeeze harder for thick weeds along the fence. The dual-line auto-feed head maintains a consistent 12-inch cutting path without any bumping or button-pushing.
The 0.065-inch dual-line setup cuts cleaner than single-line systems. Two lines exiting the head means you get two cutting passes per revolution, leaving a tidier edge. The auto-feed system worked flawlessly throughout my testing period.
Greenworks backs this trimmer with a 3-year warranty on both the tool and the battery, which is one of the best coverage terms in this price range. The included 2Ah battery charges in roughly 45 minutes and delivered about 20 minutes of trimming time in my tests.
Variable Speed Trigger Control
The variable-speed trigger is different from the 2-speed switch on the BLACK+DECKER models. Instead of two fixed speeds, the Greenworks trigger is proportional. Squeeze lightly for low RPM, squeeze firmly for full power. This gives you infinite control between minimum and maximum speed.
I preferred this approach for edging work where precision matters. Near sidewalks and garden borders, I could dial back speed to avoid throwing debris while still cutting cleanly.
40V Greenworks Ecosystem
The 40V battery included with this trimmer works across the entire Greenworks 40V tool lineup. That includes mowers, chainsaws, pole saws, snow throwers, and hedge trimmers. If you plan to build a cordless tool collection, this platform offers one of the widest selections available.
Best For
This model is ideal for homeowners with small to medium yards who value precision control. The variable-speed trigger makes it especially good for detailed edging work around landscaping features.
8. EGO POWER+ ST1623T 16-Inch String Trimmer with LINE IQ – Premium Performance
EGO POWER+ 16" Cordless Weed Trimmer with Battery and Charger – ST1623T
16 inch cutting width
56V 4.0Ah battery
LINE IQ auto-feed
POWERLOAD auto-wind
carbon fiber shaft
60 min runtime
✓ The Good
- LINE IQ auto-sensing line feed
- POWERLOAD auto-wind technology
- Telescopic carbon fiber shaft
- 60 minutes runtime
- 5-year warranty
✕ The Bad
- Premium price point
- Large battery capacity needed for very large properties
The EGO POWER+ ST1623T is the most technologically advanced cordless string trimmer I tested. Two patented technologies set it apart from every other model on this list. LINE IQ uses auto-sensing technology to monitor line wear and feed automatically, maintaining a constant 16-inch cutting swath without any input from you. POWERLOAD lets you wind new line onto the spool by pushing a button.
The carbon fiber telescopic shaft is both lighter and stronger than aluminum. It adjusts to your height in seconds, and the carbon construction absorbs vibration better than metal shafts. Combined with the high-efficiency brushless motor, this is the most comfortable trimmer I used during extended testing sessions.
With the included 56V 4.0Ah battery, I got a genuine 60 minutes of runtime. That is enough to trim a full acre on a single charge, something no other trimmer in this lineup can match. The digital variable speed selector lets you match RPM to the task, further extending battery life when full power is not needed.
LINE IQ Auto-Sensing Technology
LINE IQ is the feature that justifies the premium price for serious users. The system senses when the cutting line has worn short and automatically feeds more line without any action from the operator. You never have to bump the head, push a button, or stop working.
In my testing, the LINE IQ system maintained a consistent 16-inch cutting swath throughout the entire session. With other trimmers, the cutting width shrinks as line wears down until you manually advance it. LINE IQ eliminates that problem entirely.
POWERLOAD Auto-Wind System
Replacing trimmer line is the most hated maintenance task in lawn care. POWERLOAD solves this. You thread the line through the head, push the POWERLOAD button, and the head winds the line onto the spool automatically. What used to take five minutes of frustrating manual winding now takes about ten seconds.
This feature alone saves significant time over a season. If you trim weekly during the growing season, you will replace line at least four to six times. POWERLOAD turns each replacement from a chore into an afterthought.
Best For
This is the best cordless string trimmer for homeowners with large properties (half acre or more) who want premium features and maximum runtime. The LINE IQ and POWERLOAD technologies eliminate the two biggest frustrations of string trimmer ownership.
9. EGO Power+ ST1511T 15-Inch String Trimmer – POWERLOAD Without the Premium
EGO Power+ 15" Cordless Weed Trimmer with Battery and Charger – ST1511T
15 inch cutting width
56V 2.5Ah battery
POWERLOAD auto-wind
0.095 inch pro line
telescopic aluminum shaft
45 min runtime
✓ The Good
- POWERLOAD auto-wind system
- Professional-grade 0.095 inch line
- Telescopic aluminum shaft
- 5-year tool warranty
✕ The Bad
- Not Prime eligible
- 45 minutes runtime may limit larger yards
The EGO ST1511T gives you the POWERLOAD auto-wind system and professional-grade 0.095-inch cutting line at a lower price than the flagship ST1623T. You give up LINE IQ auto-sensing feed and the carbon fiber shaft, but you still get a telescopic aluminum shaft, brushless motor, and the same 5-year warranty.
The 15-inch cutting swath with 0.095-inch dual line is a significant step up from the 0.065-inch line on budget models. Thicker line cuts through tougher vegetation and breaks far less frequently. During testing, I powered through thick weeds near a creek bed without a single line break.
The included 2.5Ah battery delivers up to 45 minutes of runtime. That covers most residential yards on a single charge. The brushless motor runs cooler and quieter than brushed alternatives, and the two-speed settings let you trade power for runtime as needed.
Professional-Grade 0.095-Inch Line Advantage
Line diameter matters more than most people realize. The 0.065-inch line on budget trimmers snaps against fences, rocks, and woody stems. The 0.095-inch line on this EGO model is the same diameter used by professional landscaping crews.
Thicker line cuts cleaner, lasts longer per spool, and handles a wider range of vegetation. You pay more per foot for replacement line, but you replace it far less often.
POWERLOAD System Convenience
Like the flagship model, the ST1511T includes the POWERLOAD auto-wind system. Thread the line, push the button, and the head winds itself. If you have ever spent ten minutes fighting with a tangled spool on a hot afternoon, you understand why this feature is worth paying for.
Best For
This trimmer is the sweet spot for homeowners who want EGO quality and the POWERLOAD system without paying for LINE IQ. It handles medium to large yards with professional-grade cutting power and a 5-year warranty.
10. EGO Power+ ST1502LB Trimmer and Blower Combo – Professional-Grade Duo
EGO Power+ 56-Volt 15" String Trimmer & 530 CFM Blower Combo Kit with 2.5Ah Battery and 210W Standard Charger, ST1502LB
15 inch trimmer
56V 2.5Ah battery
530 CFM blower
0.095 inch dual line
IPX4 weather resistant
5-year warranty
✓ The Good
- Powerful trimmer and 530 CFM blower combo
- Interchangeable EGO batteries
- Variable speed on both tools
- IPX4 weather resistant construction
✕ The Bad
- 2.5Ah battery may be insufficient for large properties
- Trimmer head may wear quickly
The EGO ST1502LB combo pairs a 15-inch string trimmer with a 530 CFM leaf blower, both running on the same 56V 2.5Ah battery. This is the highest-rated combo in our lineup at 4.5 stars. The blower’s turbo mode delivers serious airflow that rivals gas-powered units.
The trimmer uses a rapid-reload head with bump-feed line advance and professional-grade 0.095-inch dual spiral-twist line. The spiral-twist design cuts more cleanly than round line and produces less noise during operation. Both tools feature high-efficiency brushless motors with IPX4 weather-resistant construction.
I tested this combo on a property with mature oak trees, and the 530 CFM blower made short work of wet leaves on the lawn and driveway. The variable speed dial lets you choose between 260 and 400 CFM on standard mode, with turbo mode hitting the full 530 CFM for stubborn debris.
530 CFM Blower Power
530 CFM at 110 MPH is serious performance for a cordless blower. To put this in perspective, many gas handheld blowers produce 400 to 500 CFM. The EGO blower matches or exceeds gas performance without the noise, fumes, or pull-starting.
The turbo mode drains the battery faster, so I recommend using it in short bursts for stuck-on wet leaves and debris. Standard mode at 400 CFM handles most cleanup tasks with good battery economy.
EGO 56V Ecosystem Investment
EGO’s 56V platform is one of the most powerful residential cordless systems available. The battery from this combo works with EGO lawn mowers, chainsaws, hedge trimmers, snow blowers, and pole saws. If you are willing to invest in the ecosystem, each additional tool costs less since you already own batteries and a charger.
Best For
This combo kit is ideal for homeowners with medium to large properties who want professional-grade trimming and blowing power in one purchase. The 5-year warranty and weather-resistant build quality make it a long-term investment.
11. RYOBI 40V Attachment Capable String Trimmer – Expandable Platform Powerhouse
RYOBI 40-Volt Lithium-Ion Cordless Attachment Capable String Trimmer, 4.0 Ah Battery and Charger Inc
15 inch adjustable cutting width
40V 4.0Ah battery
attachment capable
bump-feed head
variable speed
90 min runtime
✓ The Good
- Attachment capable accepts RYOBI Expand-It accessories
- 4.0Ah battery delivers up to 90 minutes runtime
- Adjustable 13 to 15 inch cutting width
- Variable speed trigger
✕ The Bad
- Heavy at 13.85 pounds
- Assembly required
The RYOBI 40V attachment-capable trimmer is the most expandable tool in our lineup. The split-shaft design accepts RYOBI Expand-It attachments and universal gas attachments, meaning you can convert this trimmer into a pole saw, hedge trimmer, edger, cultivator, or brush cutter by swapping the attachment.
The included 4.0Ah battery is the largest capacity battery in this comparison. RYOBI claims up to 90 minutes of runtime, and in my testing on medium-speed settings, I got close to 75 minutes. That is enough to trim a very large property on a single charge.
The adjustable cutting width is a clever feature. Set it to 15 inches for open areas to maximize coverage. Narrow it to 13 inches for tight spaces and fence lines where a wider head would catch on obstacles. The reel-easy bump-feed head reloads line quickly through a simple eyelet system.
Attachment Capability Versatility
The Expand-It system is what makes this trimmer special. Instead of buying separate motors for each tool, you buy one power head and swap attachments. RYOBI offers pole saws, hedge trimmers, edgers, brush cutters, cultivators, and even snow thrower attachments.
Third-party universal attachments also fit this shaft. This means you are not locked into RYOBI-branded accessories if you find a better deal on a compatible attachment from another manufacturer.
4.0Ah Battery Runtime Performance
The 4.0Ah high-capacity battery is the star of this package. On variable-speed low settings, I achieved 75-plus minutes of continuous trimming. Even on high power for thick weeds, the battery lasted over 40 minutes.
The battery is also compatible with the entire RYOBI 40V tool lineup, including mowers, chainsaws, and blowers. Having one large battery that works across multiple tools is a significant ecosystem advantage.
Best For
This trimmer is the top pick for homeowners who want a multi-tool platform. If you need a pole saw, hedge trimmer, and edger in addition to a string trimmer, the attachment-capable design saves money and storage space compared to buying separate tools.
12. WORX WG183 40V 13-Inch Cordless String Trimmer – Lightweight 40V Power
Worx Cordless String Trimmer, 40V 13" Electric Weed Wacker, WG183
13 inch cutting width
40V
6.4 lbs
7000 RPM
dual-exit head
auto feed
2 batteries
✓ The Good
- Ultra-lightweight at 6.4 lbs
- Dual-exit cutting head for efficiency
- Automatic feed spool system
- Power Share compatible with 20V and 40V tools
✕ The Bad
- 13 inch width smaller than some competitors
- Some users note 20V output despite 40V label
The WORX WG183 brings 40V power to a remarkably lightweight 6.4-pound package. The dual-exit cutting head feeds line from both sides simultaneously, giving you more cutting coverage per pass than single-exit designs. If weight is your primary concern but you want more power than 20V models offer, this is the trimmer to get.
The automatic-feed spool system advances line without any bumping or button-pushing. The system monitors line length during operation and feeds as needed to maintain consistent cutting performance. In my testing, it worked reliably without tangling or over-feeding.
This model includes two 2.0Ah batteries and a dual-port charger. Having two batteries means you always have a charged backup ready. The dual charger tops up both batteries simultaneously, so your downtime between charges is minimal.
Dual-Exit Cutting Head Efficiency
A dual-exit head feeds line through two openings 180 degrees apart. This means two strands of line are cutting simultaneously on opposite sides of the head. The result is cleaner cuts, faster trimming, and more efficient use of motor power compared to single-exit designs.
I noticed the difference most when edging along long sidewalks. The dual-exit head covered more ground per pass, cutting my edging time by about 20 percent compared to single-exit models.
Power Share Battery Platform
WORX Power Share batteries work across both 20V and 40V WORX tools. The batteries included with this WG183 are compatible with WORX drills, saws, blowers, and other lawn equipment. This cross-compatibility is one of the most flexible battery ecosystems available.
Best For
This trimmer is ideal for homeowners who prioritize lightweight handling but want the cutting power of a 40V system. The dual-exit head makes it especially efficient for long edging runs along driveways and walkways.
How to Choose the Best Cordless String Trimmer for Your Yard
Choosing the right cordless string trimmer comes down to matching the tool’s capabilities to your specific yard and needs. After testing 12 models across different property sizes and conditions, here are the factors that matter most.
Voltage and Power Output: Matching Power to Your Property
Battery voltage directly relates to cutting power. 20V trimmers like the WORX WG163 and BLACK+DECKER LSTE525 handle grass and light weeds on small yards up to a quarter acre. 40V models like the Greenworks and RYOBI options power through thicker vegetation and suit medium yards up to half an acre. 56V systems like the EGO lineup deliver gas-comparable performance for large properties and heavy-duty trimming.
The forum consensus on Reddit’s r/lawncare confirms what I found in testing: 20V is fine for maintenance trimming, but if you have overgrown areas or thick weeds, 40V minimum is recommended. Several users noted that 20V trimmers struggle with anything beyond maintained lawn grass.
Battery Runtime and Charging: Plan for Continuous Work
Advertised runtime numbers are best-case scenarios on low power. Real-world runtime depends on your cutting speed, vegetation thickness, and line diameter. In my testing, actual runtime averaged 70 to 80 percent of manufacturer claims.
Battery capacity (measured in Ah) matters as much as voltage. A 4.0Ah battery like the RYOBI’s lasts roughly twice as long as a 2.0Ah battery at the same voltage. If you have a large property, look for kits that include larger batteries or multiple batteries so you can work continuously.
Charging time is the other half of the equation. The WORX WG170 takes 5 hours to charge, which is frustratingly long. The BLACK+DECKER LST136 charges in under 2 hours. If runtime is tight on your property, fast charging is a feature worth prioritizing.
Cutting Swath and Line Systems: Width and Feed Type
Cutting swath ranges from 12 to 16 inches across our tested models. A wider swath covers more ground per pass, which means faster work on open areas. However, a wide head is harder to maneuver in tight spaces and around obstacles.
Line feed systems fall into three categories. Bump feed requires tapping the head on the ground to advance line. Push-button systems (WORX Command Feed, BLACK+DECKER EasyFeed) advance line with a button press. Auto-sensing systems (EGO LINE IQ) monitor line wear and feed automatically. Auto-sensing is the most convenient but comes at a premium price.
Line diameter also matters. 0.065-inch line suits grass and light weeds. 0.095-inch professional-grade line handles thick weeds, light brush, and woody stems without breaking. If your property has challenging vegetation, prioritize trimmers that accept thicker line.
Weight and Ergonomics: Fatigue Prevention
Weight directly affects how long you can work comfortably. The lightest trimmer in our lineup is the BLACK+DECKER LSTE525 at 5.3 pounds. The heaviest is the RYOBI at 13.85 pounds. That difference is enormous when you are holding the tool at various angles for 30 minutes or more.
Telescoping shafts and adjustable handles are not just comfort features. They are fatigue prevention tools. A trimmer that is too short forces you to hunch, causing back pain. A telescoping shaft that adjusts to your height, like those on the EGO models and the BLACK+DECKER LST136, lets you work in a natural posture.
Battery Ecosystem Compatibility: Think Beyond the Trimmer
This is the factor most buyers overlook. Your trimmer battery can power an entire fleet of tools if you stay within one brand’s ecosystem. EGO’s 56V platform covers mowers, blowers, chainsaws, and snow throwers. WORX Power Share works across both 20V and 40V tools. Greenworks 40V powers over eight different tools. RYOBI 40V has one of the largest cordless tool selections available.
Forum users on r/lawncare consistently rank battery ecosystem as their top priority when choosing a brand. The reasoning is simple: once you own two or three batteries and a charger, every additional tool you buy in the same brand is significantly cheaper since you skip the battery and charger.
Attachment Capability: Multi-Tool Expansion
If you need a pole saw, hedge trimmer, or edger in addition to a string trimmer, look for an attachment-capable model. The RYOBI 40V trimmer in our lineup accepts Expand-It and universal gas attachments, turning one power head into five or six different tools.
This approach saves money and storage space. Instead of five separate motors, you have one power head and five attachments. The trade-off is that attachment-capable trimmers tend to be heavier since the split-shaft coupling adds weight.
FAQs
What is the top rated cordless string trimmer?
The EGO POWER+ ST1623T with LINE IQ technology is the top rated cordless string trimmer for 2026. It features a 16-inch cutting swath, automatic line feeding via LINE IQ, POWERLOAD auto-wind system, carbon fiber telescopic shaft, and up to 60 minutes of runtime with the included 56V 4.0Ah battery. It carries a 4.4-star rating with a 5-year tool warranty.
What is the best string trimmer for the money?
The WORX WG170 3-in-1 offers the best value, combining trimmer, edger, and mini mower functionality in one tool. It includes two batteries, three spare spools, and a charger at a price significantly below premium models. For pure budget value, the WORX WG163 with two batteries and 28,000-plus reviews is hard to beat.
How long do cordless trimmer batteries last?
Cordless trimmer battery runtime ranges from 12 to 90 minutes depending on battery capacity, voltage, and power setting. Small 20V batteries (1.5 to 2.0Ah) typically deliver 12 to 20 minutes. Large 40V to 56V batteries (4.0Ah) can deliver 45 to 90 minutes. Battery lifespan is typically 3 to 5 years before noticeable capacity degradation occurs.
What voltage do I need for a string trimmer?
For small yards up to a quarter acre, 20V trimmers provide sufficient power. For medium yards up to half an acre with moderate weeds, choose a 40V system. For large properties or heavy-duty trimming with thick vegetation, 56V systems like EGO deliver gas-comparable performance. Higher voltage means more cutting power and faster trimming.
Final Verdict: Which Cordless String Trimmer Should You Buy?
After testing all 12 models, my recommendations come down to your yard size and budget. If you have a large property and want the best cordless string trimmer available, the EGO POWER+ ST1623T with LINE IQ is unmatched. Its auto-sensing line feed, carbon fiber shaft, and 60-minute runtime make it the most capable tool in this lineup.
For value-conscious buyers with small to medium yards, the WORX WG170 3-in-1 delivers trimmer, edger, and mini mower functionality at a fraction of the premium price. If you want the absolute lowest cost with proven reliability, the WORX WG163 with nearly 28,000 reviews remains the most popular cordless weed eater on the market.
For homeowners building a tool ecosystem, the EGO 56V and RYOBI 40V platforms offer the widest range of compatible tools. Choose the brand that matches your long-term lawn care needs, and each additional tool you buy will cost less since you already own the batteries.
