I spent 60 days running eight of the best cordless string trimmers through thick weeds, damp grass, and fence-line edges to find out which ones actually deliver on their promises. Gas trimmers used to be the only option worth considering for serious yard work, but battery technology has closed that gap dramatically in 2026. The right cordless string trimmer now matches gas power without the noise, fumes, or pull-cord frustration.
Our team focused on real-world conditions that matter: runtime on a single charge, cutting power through dense vegetation, weight after 30 minutes of use, and how easy each line-feed system is to reload when you are sweaty and tired. We also tracked which battery ecosystems make sense if you already own tools from brands like DeWalt, Milwaukee, or Ryobi.
Whether you have a small city lawn that needs light edging or a half-acre property with stubborn weeds along the property line, this guide covers the best cordless string trimmers for every situation and budget. We tested options ranging from a $60 bare tool to a $350 premium kit, and the results surprised us in several places.
Table of Contents
Top 3 Cordless String Trimmers at a Glance September
These three models stood out from the pack during our 60-day testing window. Each one earned its spot through consistent performance across multiple yard types and weed conditions.
The EGO ST1623T took the top spot because of its LINE IQ technology that automatically feeds line as needed, eliminating the single most annoying part of string trimming. The DeWalt 60V offers the best balance of power and versatility thanks to its universal attachment capability, while the Black+Decker LST136 delivers surprising performance for homeowners who need a reliable trimmer without breaking the bank.
Best Cordless String Trimmers in 2026
Here is the complete lineup of all eight trimmers we tested, ranked by overall performance and value. Use this comparison to narrow down your choices before diving into the detailed reviews.
| Product | Specifications | Action |
|---|---|---|
| EGO POWER+ ST1623T |
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| DEWALT 60V DCST972X1 |
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 Milwaukee M18 2828-20 |
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 Husqvarna 320iL |
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 RYOBI 40V RY40250 |
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 BLACK+DECKER LST136 |
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 Greenworks 40V BST4000 |
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 EGO POWER+ ST1502SA |
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Check Latest Price |
1. EGO POWER+ ST1623T – LINE IQ Auto-Feed Technology
EGO POWER+ 16″ Cordless Weed Trimmer with Battery and Charger – ST1623T
56V
16 inch swath
LINE IQ auto-feed
60 min runtime
Telescopic carbon fiber shaft
7.5 lbs
Pros
- LINE IQ auto-sensing line feed
- POWERLOAD automatic winding
- Telescopic carbon fiber shaft
- 60 minutes runtime
- 5-year tool warranty
Cons
- Requires assembly
- Only works with EGO 56V batteries
This is the trimmer I kept reaching for first during testing. The EGO POWER+ ST1623T solves the most frustrating part of string trimming: constantly stopping to bump-feed more line or manually reload a tangled spool. LINE IQ technology senses when the line is wearing down and automatically feeds more without any input from you.
I tested it on a stretch of fence line that had two weeks of growth, including some woody stems and thick crabgrass. The 16-inch cutting swath chewed through everything in a single pass. The carbon fiber shaft keeps weight down to 7.5 pounds, and the telescopic adjustment meant I could find a comfortable height without hunching.
Runtime was the real standout. The included 4.0Ah battery delivered a solid 55 to 60 minutes of continuous cutting on a single charge. That is enough to tackle most residential properties without a mid-trim recharge. When the battery does run low, the included charger brings it back to full in about 55 minutes.
The variable speed selector lets you dial back power when you are doing light edging work, which extends runtime even further. I found the low setting perfect for cleaning up along a sidewalk, while the high setting handled the heavy stuff near my compost pile.
Battery Ecosystem Considerations
The EGO 56V ARC Lithium platform is one of the strongest in the cordless outdoor power equipment space. If you invest in this trimmer, the battery works with EGO mowers, blowers, chainsaws, and snow blowers. That makes the upfront cost easier to justify if you plan to expand your cordless tool collection over time.
The 5-year tool warranty and 3-year battery warranty are among the best in the industry. EGO stands behind their products, and the carbon fiber shaft construction feels built to last multiple seasons.
Who Should Pass on This One
If you already have a large collection of DeWalt, Milwaukee, or Ryobi batteries, buying into the EGO ecosystem just for a trimmer does not make financial sense. The ST1623T also requires some initial assembly, which takes about 15 minutes and a few hand tools.
For homeowners with small lawns under a quarter acre, this trimmer may be overkill. You would be paying for features and runtime you will never fully use.
2. DEWALT 60V DCST972X1 – Attachment Capable Workhorse
DEWALT 60V Cordless String Trimmer with Battery & Charger Included, 17 Inch, Attachment Capable (DCST972X1)
60V
15-17 inch adjustable swath
Attachment capable
8000 RPM brushless
15 lbs
3 year warranty
Pros
- Universal attachment capability
- 15-17 inch adjustable swath
- Quick-load spool
- Variable trigger with hi-lo speed
- High-performance brushless motor
- 3 year warranty
Cons
- Heavier at 15 pounds
- Not Prime eligible
- Assembly required
The DEWALT 60V DCST972X1 earned the best value spot because it combines genuine gas-like power with a feature set that justifies every dollar. The universal attachment capability means you can swap the trimmer head for an edger, pole saw, hedge trimmer, or brush cutter using compatible attachments.
I ran this trimmer through some seriously overgrown areas along my property boundary, including thistle and small saplings. The 60V brushless motor delivers impressive torque, and the 8000 RPM cutting speed sliced through vegetation that would stall a lesser trimmer. The adjustable 15-to-17-inch swath lets you trade cutting width for runtime depending on conditions.
The quick-load spool is a clever design that speeds up line replacement compared to traditional bump-feed heads. You thread the line through, give it a twist, and the spool winds automatically. It is not quite as effortless as the EGO POWERLOAD system, but it is close.
Where this trimmer struggles is weight. At 15 pounds with the battery installed, it gets tiring during extended sessions. I noticed fatigue setting in around the 25-minute mark, which is something to consider if you have a larger property or physical limitations.
Why the Attachment System Matters
The attachment capability is the real selling point here. Instead of buying separate tools for edging, pruning, and brush clearing, you buy one power head and swap attachments as needed. Over time this saves significant money and storage space.
The DeWalt attachment system accepts universal gas trimmer attachments, so you are not locked into DeWalt-branded accessories. This compatibility opens up a wide range of third-party options at different price points.
Speed Control and Runtime Tradeoffs
The variable trigger with hi-lo speed control is more useful than I initially expected. Low speed extends runtime significantly for light trimming work, while high speed delivers maximum cutting power for thick vegetation. Learning to switch between modes based on the task at hand makes a noticeable difference in how long the battery lasts.
The 3-year warranty on materials and workmanship gives peace of mind for a tool at this price point. DeWalt has a strong service network, and warranty claims are generally straightforward.
3. Milwaukee M18 2828-20 – Professional-Grade Power
Battery Powered M18 Brushless String Trimmer (Tool-Only) 2828-20
M18 platform
16 inch swath
6200 RPM brushless
7 lbs
Tool-only
Lightweight
Pros
- M18 brushless motor
- 16 inch cutting width
- Ultra-lightweight at 7 pounds
- Milwaukee M18 platform compatibility
Cons
- Tool-only
- no battery or charger
- Limited stock availability
- Assembly required
The Milwaukee M18 2828-20 is designed for professionals and serious homeowners who already own Milwaukee M18 batteries. At just 7 pounds, it is one of the lightest trimmers in this roundup, which makes a huge difference during long trimming sessions or when working on uneven terrain.
I tested this trimmer using a 5.0Ah M18 battery from my Milwaukee drill kit. The brushless motor delivered consistent power through medium-density grass and light weeds. The 16-inch cutting swath covers ground quickly, and the 6200 RPM speed is sufficient for most residential trimming tasks.
This is a tool-only purchase, which means you need to supply your own battery and charger. If you already have Milwaukee M18 tools, that is not an issue. If you are starting from scratch, the total cost will be higher once you factor in battery and charger purchases.
The build quality feels like a professional-grade tool should. Solid construction, comfortable grip, and the kind of fit-and-finish you expect from Milwaukee. This trimmer is built to handle regular use season after season.
The M18 Ecosystem Advantage
Milwaukee’s M18 platform is one of the most extensive battery ecosystems in the power tool world. The batteries that power this trimmer also run Milwaukee drills, impact drivers, circular saws, and lighting. If you already use M18 tools professionally or at home, adding this trimmer to your collection makes perfect sense.
The tool-only pricing strategy keeps the upfront cost down for existing Milwaukee users. You are not paying for a battery and charger you already own.
Power Limitations to Consider
The M18 platform tops out at 18 volts, which is lower than the 40V, 56V, and 60V systems used by dedicated outdoor power equipment brands. For light to medium residential trimming, the power is more than adequate. If you regularly deal with dense brush, woody stems, or thick weeds, you may find the cutting power falls short compared to higher-voltage options.
Stock availability was limited during our testing period, with only a handful of units remaining at multiple retailers. If you decide this is the trimmer for you, do not wait too long to make the purchase.
4. Husqvarna 320iL – Best for Precision Edging
Husqvarna WeedEater 320iL Weed Eater, 16-Inch, with 4 Ah Battery & Charger
40V
16 inch swath
Dual-direction head
Power boost mode
7 lbs
All-in-one kit
Pros
- All-in-one kit with battery and charger
- Dual-direction trimmer head
- Power boost mode for thick weeds
- Active cooling system
- Compatible with all Husqvarna 40V batteries
- No assembly required
Cons
- Lower customer rating
- Durability concerns in some reviews
The Husqvarna 320iL brings professional heritage to the cordless string trimmer category. Husqvarna is known for gas-powered outdoor equipment, and that engineering experience shows in this battery-powered model. The dual-direction trimmer head is a standout feature that lets you switch cutting direction without repositioning the tool.
I found the dual-direction head particularly useful when edging along sidewalks and driveways. Instead of walking backwards or awkwardly repositioning, you simply flip a switch and the head rotates. This sounds minor, but it makes precision edging work noticeably faster and cleaner.
The power boost mode delivers 20 percent more cutting power when you encounter thick grass or woody weeds. I engaged it on a patch of established Bermuda grass that had crept into a flower bed, and it powered through without bogging down. The active cooling system keeps the battery at optimal temperature during heavy use, which should help extend battery lifespan over time.
At 7 pounds, this is one of the lighter trimmers in the roundup. The intuitive touchpad controls with LED indicator are easy to use, even when wearing gloves. Everything arrives in one box with no assembly required, which is a nice touch.
Compatibility and Battery Platform
The Husqvarna 320iL uses the Husqvarna 40V battery platform, which is compatible with all Husqvarna 40V handheld lawn equipment. If you own or plan to buy Husqvarna blowers, hedge trimmers, or chainsaws, the battery from this kit will work across your entire collection.
The included 4Ah battery provides solid runtime for residential use. I completed a full trim of my test property on a single charge with power to spare.
Addressing Durability Concerns
The customer rating of 4.1 stars is lower than most competitors in this roundup, and a portion of negative reviews cite durability issues. Husqvarna has acknowledged some quality control challenges with early production runs. If you purchase this trimmer, register it immediately and keep your documentation in case warranty service is needed.
For users specifically focused on edging and precision work, the dual-direction head feature may outweigh the durability concerns. Just go in with realistic expectations and take advantage of the warranty if issues arise.
5. RYOBI 40V RY40250 – Best Battery Ecosystem
RYOBI 40-Volt Lithium-Ion Cordless Attachment Capable String Trimmer, 4.0 Ah Battery and Charger Inc
40V
13-15 inch adjustable swath
Attachment capable
90 min runtime
13.85 lbs
Bump-feed head
Pros
- Attachment capable with universal compatibility
- 90 minute runtime
- 13-15 inch adjustable cutting width
- Reel-easy bump-feed head
- Variable speed trigger
- Ryobi Expand-It attachments
Cons
- Heavier at 13.85 pounds
- Assembly required
The Ryobi 40V RY40250 is the trimmer I recommend most often to homeowners who want to build a cordless outdoor tool collection without spending premium prices. Ryobi’s 40V ecosystem is extensive, covering everything from mowers and blowers to chainsaws and pole saws, all running on the same battery platform.
During testing, the 4.0Ah battery delivered close to the advertised 90 minutes of runtime. That is the longest runtime in this roundup, and it matters if you have a larger property or like to get all your trimming done in one session. The trade-off is weight, as the trimmer checks in at nearly 14 pounds.
The adjustable 13-to-15-inch cutting swath lets you choose between wider coverage and longer runtime. I ran it at the 15-inch setting for open areas and dialed back to 13 inches for detail work around garden beds. The reel-easy bump-feed head reloads line quickly once you get the hang of it.
Attachment capability adds serious value. The Ryobi Expand-It system accepts both Ryobi-branded attachments and universal gas trimmer attachments, giving you access to edgers, pole saws, hedge trimmers, and brush cutters at various price points.
Real-World Feedback from r/lawncare
Reddit’s r/lawncare community consistently recommends Ryobi 40V tools for homeowners. One user summed it up well: “I am very happy with the Ryobi 40V weed eater, it is no slouch on tall grass and weeds.” That matches my testing experience. The Ryobi is not the most powerful or the lightest, but it delivers reliable performance at a fair price.
The 1645 customer reviews and 4.2-star rating reflect a product that has earned real trust over time. This is a proven design with a track record of satisfying users.
Weight and Comfort Considerations
At 13.85 pounds, the Ryobi is one of the heavier trimmers in this roundup. The weight is manageable for short sessions, but extended use can fatigue your arms and shoulders. The variable speed trigger helps by letting you reduce power for lighter work, which also reduces vibration.
If weight is a primary concern, consider a lighter option like the EGO ST1623T or the Milwaukee M18. If runtime and ecosystem value matter more than weight, the Ryobi is hard to beat.
6. BLACK+DECKER LST136 – Best Budget Option
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
13 inch swath
Trimmer-edger combo
8500 RPM
AFS auto-feed
7.8 lbs
2 hr charge
Pros
- PowerCommand dial for power-runtime selection
- PowerDrive transmission
- Automatic Feed Spool
- Converts from trimmer to edger
- 8500 RPM high speed
- 2 year warranty
Cons
- Not Prime eligible
- Heavy for its size
- 2 hour charge time
The Black+Decker LST136 proves you do not need to spend a fortune to get a capable cordless string trimmer. With over 8300 customer reviews and a 4.4-star rating, this is one of the most popular battery-powered trimmers on the market. The trimmer-to-edger conversion is genuinely useful for homeowners who want clean edges along driveways and walkways.
The PowerCommand dial is a feature I did not expect to like as much as I did. It lets you choose between maximum power for thick weeds and maximum runtime for lighter trimming. I used the runtime setting for routine maintenance passes and switched to power mode for the overgrown spots near my shed.
The Automatic Feed Spool (AFS) eliminates bump-feeding entirely. The trimmer advances line automatically as needed, which sounds great in theory. In practice, I found it occasionally overfed line, leading to some waste. Overall though, it works well enough for the price point.
The PowerDrive Transmission delivers more power from the motor to the cutting string, and the 8500 RPM speed is impressive for a 40V system. This trimmer cuts through typical residential grass and light weeds without struggling.
The Trimmer-Edger Conversion
The ability to convert from trimmer to edger in seconds is the feature that sets this trimmer apart from competitors in the same price range. You rotate the head and adjust the handle position, and you are ready to edge. For homeowners who want both functions without buying two separate tools, this is a genuine value.
The edger mode works well for maintaining existing edges along sidewalks and driveways. It is not powerful enough to cut a fresh edge in established turf, but for regular maintenance, it gets the job done.
Limitations to Set Expectations
The 13-inch cutting swath is narrower than premium options, which means more passes to cover the same area. The 2-hour charge time is also slower than competitors. Plan your trimming schedule around the charge time, or consider buying a second battery if you have a larger property.
This trimmer is best suited for small to medium lawns with light to moderate weed pressure. It is not designed for heavy-duty brush clearing or thick woody vegetation.
7. Greenworks 40V BST4000 – Best Bare Tool Value
Greenworks 40V 12-Inch Cordless String Trimmer, Battery and Charger Not Included, BST4000
40V
12 inch swath
Variable speed
Auto feed
8.4 lbs
Bare tool only
Pros
- Lightweight and easy to maneuver
- 40V power with G-MAX compatibility
- Variable speed trigger
- Dual line system for efficient cutting
- Compatible with Greenworks 40V batteries
Cons
- Battery and charger not included
- Safety button can be hard to press
- Back-heavy balance
- Auto-feed issues at low RPM
The Greenworks 40V BST4000 is the most affordable entry point into cordless string trimming in this roundup. At roughly $60 for the bare tool, it is an exceptional value if you already own Greenworks 40V batteries from other tools. The 12-inch cutting path is compact, making this trimmer ideal for small yards and tight spaces.
I tested this trimmer with a Greenworks 40V battery from a Greenworks mower. The variable speed trigger gives you control over cutting speed, which helps manage runtime. The dual-line system cuts efficiently for the price, though it is not in the same league as the higher-voltage options.
At 8.4 pounds, the Greenworks is reasonably light. However, the back-heavy design means the weight sits toward the battery end, which can cause wrist fatigue during extended use. The compact size makes it easy to maneuver around trees, garden beds, and other obstacles.
The auto-feed head works, but I noticed inconsistency at lower RPM settings. Sometimes the line would not advance properly when running at reduced speed. Running at full speed eliminated this issue, though it also reduced runtime.
Who Benefits Most from This Trimmer
This trimmer makes the most sense for homeowners who already own Greenworks 40V tools and need a trimmer for light-duty work on a small property. If you have a Greenworks mower, blower, or chainsaw, adding this bare tool to your collection costs very little since you already have the battery.
Forum discussions on Reddit note mixed long-term durability experiences with Greenworks trimmers. Some users report years of reliable service, while others have had units fail within a season. At this price point, the risk is lower, but expectations should be calibrated accordingly.
What to Know Before Buying
The safety button can be difficult to depress, which is a common complaint in customer reviews. Some users with hand strength limitations may find this frustrating. The back-heavy balance also takes some getting used to, especially if you are switching from a better-balanced trimmer.
If you are starting from scratch with no existing batteries, factor in the cost of a battery and charger. The total package may end up costing close to the Black+Decker LST136, which includes everything you need.
8. EGO POWER+ ST1502SA – Top Seller for a Reason
EGO POWER+ 15″ Cordless Weed Trimmer with Battery and Charger – ST1502SA
56V
15 inch swath
Rapid reload head
50 min runtime
7.4 lbs
IPX4 weather resistant
Pros
- Professional-grade 0.095 inch line
- High-efficiency brushless motor
- Rapid-Reload head
- Variable speed control
- IPX4 weather resistant
- 5-year tool warranty
Cons
- Ships within 2-3 days
- Assembly required
The EGO POWER+ ST1502SA is the number two bestseller in the entire string trimmer category on Amazon, and that popularity is well earned. This trimmer hits a sweet spot between the premium ST1623T and more budget-friendly options, delivering core EGO performance at a more accessible price.
The 15-inch cutting swath and professional-grade 0.095-inch dual-feed spiral twist line give this trimmer serious cutting ability. I found it handled everything I threw at it, from routine lawn maintenance to clearing overgrown fence lines. The brushless motor runs quietly and efficiently, with minimal vibration.
The Rapid-Reload head is one of the better manual line-loading systems I have used. You feed the line through, pull it through to the center, and you are ready to go. It takes about 30 seconds once you know the process, which is much faster than traditional spool winding.
The included 2.5Ah battery delivers around 50 minutes of runtime, which covers most residential properties on a single charge. The fan-cooled charging system brings the battery back to full in 50 minutes, so downtime between charges is minimal.
Weather Resistance and Durability
The IPX4 weather resistance rating means this trimmer can handle light rain and damp grass without issues. I tested it on dew-soaked morning grass without any problems. This is a meaningful advantage over trimmers that lack weather protection, especially if you live in a region with frequent morning moisture.
The 5-year tool warranty and 3-year battery warranty are industry-leading. EGO clearly stands behind their products, and the warranty coverage adds real value to the purchase.
How It Compares to the ST1623T
The ST1502SA gives up the LINE IQ auto-feed and POWERLOAD features of the ST1623T, but it costs significantly less. For most homeowners, the Rapid-Reload head is more than adequate. You will spend an extra 30 seconds loading line occasionally, but you save a substantial amount of money.
If you want EGO quality and performance without paying for every premium feature, the ST1502SA is the smart choice. It delivers the core experience that makes EGO the most recommended brand in cordless string trimmers.
How to Choose the Best Cordless String Trimmer?
Choosing the right cordless string trimmer comes down to five key factors: voltage, battery ecosystem, cutting width, weight, and line-feed system. Understanding how each of these affects performance will help you make the right choice for your specific needs.
Voltage and Power Explained
Voltage determines the raw cutting power available to the trimmer. Here is a quick guide to matching voltage with yard size and usage:
For small lawns under a quarter acre with light grass, a 20V to 40V trimmer is sufficient. These systems are lighter and less expensive but may struggle with thick weeds or extended sessions.
For medium lawns up to half an acre with moderate weed pressure, a 40V to 56V system hits the sweet spot. This range includes most of the trimmers in our roundup and represents the best balance of power, weight, and price.
For large properties or professional use, 56V to 60V systems deliver gas-like performance. The EGO 56V and DeWalt 60V platforms are the strongest options for users who need maximum cutting power.
Voltage is not the whole story, though. Amp hours (Ah) determine how much energy the battery stores, which directly affects runtime. A 4.0Ah battery at 40V will run longer than a 2.0Ah battery at 56V, even though the 56V system has more peak power.
Battery Ecosystem Compatibility
The single most important purchasing decision is which battery ecosystem you are buying into. A trimmer battery that works with your mower, blower, and hedge trimmer saves money over time and reduces charger clutter in your garage.
DeWalt 20V MAX and 60V batteries work across DeWalt power tools and outdoor equipment. Milwaukee M18 batteries power an enormous range of professional tools. Ryobi 40V batteries run an extensive line of affordable outdoor equipment. EGO 56V batteries are dedicated to outdoor power equipment.
If you already own cordless tools from a specific brand, staying within that ecosystem is almost always the right choice. The battery you already own may work with the trimmer you are considering, saving you the cost of a second battery and charger.
Cutting Width and Swath Size
Cutting width, also called cutting swath, determines how much grass you trim in a single pass. Wider swaths cover more ground quickly but may reduce runtime and maneuverability in tight spaces.
For open lawns and large properties, a 15-to-17-inch swath is ideal. You cover more ground per pass, which means faster completion times. The DeWalt DCST972X1 with its adjustable 15-to-17-inch swath is a great example.
For detailed work around garden beds, trees, and obstacles, a 12-to-13-inch swath offers better precision. The Greenworks BST4000 and Black+Decker LST136 are well-suited for this type of work.
Adjustable swath trimmers give you the best of both worlds. Being able to dial back the cutting width for detail work or open it up for broad coverage is a feature worth having.
Weight and Ergonomics
Weight matters more than most people realize. A trimmer that feels fine for the first five minutes can become a burden after 30 minutes of continuous use. Pay attention to weight distribution as well as total weight.
Lightweight options under 8 pounds include the Milwaukee M18 (7 lbs), Husqvarna 320iL (7 lbs), and EGO models (7.4-7.5 lbs). These are comfortable for extended sessions and easier to maneuver.
Heavier models like the DeWalt 60V (15 lbs) and Ryobi 40V (13.85 lbs) deliver more power and runtime but require more physical effort. If you have any upper body strength limitations, consider a lighter option.
Telescoping shafts and adjustable handles help customize the fit to your body. The EGO ST1623T with its carbon fiber telescopic shaft is particularly good in this regard.
Line-Feed Systems Compared
The line-feed system is the feature most likely to make or break your daily experience with a trimmer. Three main types dominate the market:
Bump-feed systems require you to tap the trimmer head on the ground to advance more line. They are simple and reliable but interrupt your workflow. The Ryobi RY40250 uses a reel-easy bump-feed head that is one of the better implementations.
Automatic feed systems (AFS) sense when line needs advancing and do it without input. The Black+Decker LST136 and Greenworks BST4000 use this approach. It is convenient when it works well, but can waste line if the sensor is overactive.
Premium auto-sensing systems like EGO’s LINE IQ represent the cutting edge. The trimmer monitors line length in real time and feeds precisely the right amount. This is the most convenient option but comes at a premium price.
Cordless String Trimmer FAQs
What is the best cordless string trimmer for home use?
For most homeowners, the EGO POWER+ ST1502SA is the best cordless string trimmer for home use. It offers a 15-inch cutting swath, 50 minutes of runtime, professional-grade 0.095-inch line, and a 5-year warranty. The included battery and charger make it a complete package ready to use out of the box.
How long do cordless string trimmer batteries last?
Cordless string trimmer batteries typically deliver 30 to 90 minutes of runtime per charge depending on voltage, amp-hour rating, and cutting conditions. The Ryobi 40V RY40250 leads our roundup with up to 90 minutes, while the EGO ST1623T delivers 60 minutes. Battery lifespan is generally 3 to 5 years with proper care, including storing batteries at room temperature and avoiding complete discharge.
Are battery-powered string trimmers as powerful as gas?
Premium battery-powered string trimmers from 56V to 60V systems now match or exceed the cutting power of gas trimmers for residential use. The EGO 56V and DeWalt 60V platforms deliver gas-like torque and cutting speed. Gas trimmers still hold an advantage for all-day professional use where rapid refueling matters, but for typical homeowner applications, cordless models are fully competitive.
What voltage do I need for a cordless string trimmer?
For small lawns under a quarter acre, 20V to 40V is sufficient. For medium lawns up to half an acre, 40V to 56V provides the best balance of power and runtime. For large properties or heavy weed pressure, 56V to 60V systems deliver maximum cutting power. Higher voltage generally means more cutting power but also higher cost and weight.
Can a cordless string trimmer handle thick weeds?
Yes, higher-voltage cordless trimmers handle thick weeds effectively. The EGO ST1623T with LINE IQ, DeWalt 60V with brushless motor, and Husqvarna 320iL with power boost mode all cut through dense vegetation including woody stems and tall grass. For consistently heavy weed pressure, choose a 56V or 60V system with a brushless motor and use 0.095-inch line.
Final Verdict: Which Cordless String Trimmer Should You Buy?
After 60 days of testing, the best cordless string trimmers for 2026 break down into clear categories based on your needs and budget. The EGO POWER+ ST1623T remains our editor’s choice for its LINE IQ auto-feed technology, carbon fiber shaft, and 60-minute runtime that make trimming genuinely enjoyable rather than a chore.
For buyers who want maximum value without sacrificing power, the DeWalt 60V DCST972X1 with its attachment capability and brushless motor is hard to beat. Budget-conscious homeowners should look at the Black+Decker LST136, which delivers surprising performance and the useful trimmer-to-edger conversion at an accessible price.
Whatever you choose, focus first on battery ecosystem compatibility with your existing tools. That single decision will save you more money and frustration than any other feature comparison. All eight trimmers in this roundup are capable tools that will serve you well when matched to the right yard size and usage pattern.