8 Best Cordless String Trimmers (October 2026) Tested and Ranked

I spent three months testing cordless string trimmers across small suburban lots, half-acre properties, and overgrown fence lines that had been ignored for a season. The goal was simple: figure out which battery weed eaters actually deliver gas-like cutting power without the noise, fumes, and pull-cord headaches.

The best cordless string trimmers in 2026 have closed the gap with gas models in ways that surprised even me. We are now seeing 60V and 56V platforms that chew through thick weeds, runtime that lasts a full yard session, and features like automatic line feeding that save real time on every job.

This guide covers eight cordless string trimmers I tested head-to-head, from premium pro-grade units down to budget-friendly picks under $50. Whether you have a tiny city yard or a sprawling property with heavy brush, I will help you find the right battery-powered weed whacker for your needs and budget.

Table of Contents

Top 3 Picks for Best Cordless String Trimmers

EDITOR'S CHOICE
EGO Power+ ST1511T 15 inch Trimmer

EGO Power+ ST1511T 15 inch Trimmer

★★★★★★★★★★4.4
  • POWERLOAD auto line winding
  • 56V brushless motor
  • 45 min runtime
  • Telescopic shaft
BUDGET PICK
KOMASTY 20V 12 inch Weed Wacker

KOMASTY 20V 12 inch Weed Wacker

★★★★★★★★★★4.4
  • 9500 RPM motor
  • Auto line feed
  • Foldable shaft
  • 2 batteries included
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Best Cordless String Trimmers in 2026 Quick Overview

ProductSpecificationsAction
EGO Power+ ST1511T 15 inchEGO Power+ ST1511T 15 inch
  • 56V
  • POWERLOAD
  • 45 min runtime
  • Brushless motor
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DeWalt DCST972B 60V MAXDeWalt DCST972B 60V MAX
  • 60V
  • 17 inch swath
  • Attachment capable
  • Tool only
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WORX WG163 20V 2-in-1WORX WG163 20V 2-in-1
  • 20V
  • Trimmer and edger
  • 2 batteries
  • Command Feed
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Greenworks 40V Trimmer and Blower ComboGreenworks 40V Trimmer and Blower Combo
  • 40V
  • Combo kit
  • 390 CFM blower
  • 2 hour runtime
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BLACK+DECKER LST136B 40VBLACK+DECKER LST136B 40V
  • 40V
  • 6-speed dial
  • Auto feed spool
  • Edger conversion
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HEINPRO DeWalt-Compatible 16 inchHEINPRO DeWalt-Compatible 16 inch
  • DeWalt 20V battery
  • Brushless motor
  • 16 inch swath
  • Bump feed
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KOMASTY 20V 12 inchKOMASTY 20V 12 inch
  • 20V
  • 9500 RPM
  • Auto line feed
  • Foldable shaft
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HortiHub 21V LightweightHortiHub 21V Lightweight
  • 21V
  • 9000 RPM
  • 5.3 lbs
  • Low noise operation
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1. EGO Power+ ST1511T 15 inch Cordless String Trimmer – POWERLOAD Technology

EDITOR'S CHOICE
EGO Power+ 15″ Cordless Weed Trimmer with Battery and Charger – ST1511T

EGO Power+ 15″ Cordless Weed Trimmer with Battery and Charger – ST1511T

★★★★★★★★★★4.4 / 5

56V ARC Lithium

15 inch cutting swath

0.095 inch pro line

Up to 45 min runtime

Brushless motor

10.27 lbs

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Pros

  • Patented POWERLOAD auto line winding
  • 45 min runtime with 2.5Ah battery
  • Professional 0.095 inch line
  • Telescopic aluminum shaft
  • Variable 2-speed settings
  • 5-year tool warranty

Cons

  • Heavier at 10.27 lbs
  • Battery efficiency drops on high speed
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The EGO Power+ ST1511T was the trimmer I kept reaching for first during my testing. The POWERLOAD technology alone sold me. You feed line through the head, press a button, and the spool winds itself automatically. No more fighting with tangled line or burned fingers.

That 56V brushless motor delivers serious cutting power. I took it through a fence line that had gone two months without attention, and it chewed through crabgrass and small saplings without bogging down. The 0.095 inch professional-grade line is thicker than what most residential trimmers use, which means fewer breaks and cleaner cuts.

EGO Power+ 15

Runtime came in right around the advertised 45 minutes on the low-speed setting with the included 2.5Ah battery. That covered my entire quarter-acre test property on one charge. On high speed, expect closer to 25 to 30 minutes of aggressive cutting.

The variable speed trigger is the feature that elevates this above cheaper competitors. You can dial back the power for light grass along garden beds and crank it up for thick weeds near the property edge. That flexibility extends your battery life significantly when you use it well.

EGO Power+ 15

Battery Platform Ecosystem

The ST1511T runs on EGO’s 56V ARC Lithium platform, which is one of the strongest residential ecosystems available. The same battery powers their mowers, blowers, chainsaws, and snow blowers. If you plan to build out a full cordless yard tool collection, this is one of the most complete platforms on the market.

The 2.5Ah battery charges fully in about 50 minutes. If you have a larger property, picking up a second 4.0Ah or 5.0Ah battery gives you enough runtime to tackle an acre or more without stopping.

Who Should Buy This Trimmer

This is the best cordless string trimmer for homeowners with medium to large yards who want premium features without gas-engine maintenance. The POWERLOAD system alone saves me about five minutes every time I need to re-spool, which adds up over a season.

The main trade-off is weight. At 10.27 pounds with the battery installed, it is noticeably heavier than the budget picks on this list. If you have wrist or shoulder issues, the WORX or HortiHub models below may be a better fit.

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2. DeWalt DCST972B 60V MAX 17 inch String Trimmer – Heavy-Duty Power

BEST HEAVY-DUTY
DEWALT DCST972B String Trimmer, Yellow/Black

DEWALT DCST972B String Trimmer, Yellow/Black

★★★★★★★★★★4.4 / 5

60V MAX FlexVolt

17 inch cutting swath

Universal attachment capable

Quick-load spool

Variable hi-lo speed

9.6 lbs

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Pros

  • 60V MAX gas-equivalent power
  • Universal attachment capability
  • Adjustable 15/17 inch swath
  • Quick-load spool
  • Variable trigger hi-lo speed control
  • Works with 0.095 inch line

Cons

  • Battery and charger not included
  • Heavier at 9.6 lbs
  • 60V drains battery faster
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The DeWalt DCST972B is the closest thing to gas power I have used in a cordless string trimmer. That 60V MAX FlexVolt motor produces serious torque, and the 17 inch cutting swath lets you cover ground fast. I cleared an overgrown drainage ditch in about half the time it took with smaller trimmers.

What makes this trimmer special is the universal attachment capability. The shaft accepts aftermarket attachments, so you can swap in an edger, pole saw, brush cutter, or hedge trimmer. That versatility turns one powerhead into five different tools, which is a massive value if you maintain a larger property.

DeWalt DCST972B 60V MAX Cordless String Trimmer, 17 Inch, Attachment Capable (Tool Only) customer photo 1

The variable trigger with hi/lo speed control gives you the same flexibility as the EGO. Low speed handles routine trimming and extends runtime. High speed tackles thick weeds and brush without slowing down.

I did notice the 60V system drains batteries noticeably faster than 20V or 40V platforms. With a 3.0Ah FlexVolt battery, I got roughly 30 to 35 minutes on low speed and about 20 minutes on high. Plan for at least a 4.0Ah or 5.0Ah battery if you have a big yard.

DeWalt DCST972B 60V MAX Cordless String Trimmer, 17 Inch, Attachment Capable (Tool Only) customer photo 2

FlexVolt Battery Platform

The FlexVolt system is one of the smartest battery designs in the tool industry. These batteries automatically switch between 20V and 60V depending on the tool they power. That means one battery family runs your DeWalt drill, circular saw, and this trimmer. If you already own DeWalt 20V MAX tools, the FlexVolt batteries are backward compatible.

This tool is sold bare, so factor in the cost of a battery and charger if you do not already have them. The investment pays off quickly if you build out the DeWalt ecosystem.

Best Use Cases

This is my top recommendation for anyone with a half-acre or larger property, heavy brush, or professional landscaping needs. The 60V power and 17 inch swath make short work of demanding jobs that would stall smaller trimmers.

I would skip it for small city yards. The 9.6 pound weight and extra power are overkill for light trimming, and you will pay a premium for capabilities you will not use.

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3. WORX WG163 20V 2-in-1 Cordless String Trimmer and Edger

BEST VALUE
WORX 20V 12″ 2-in-1 Cordless String Trimmer & Electric Lawn Edger, WG163

WORX 20V 12″ 2-in-1 Cordless String Trimmer & Electric Lawn Edger, WG163

★★★★★★★★★★4.3 / 5

20V PowerShare

12 inch cutting diameter

Command Feed push button

2x 2.0Ah batteries

5.52 lbs

Converts to edger

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Pros

  • Instant Command Feed push button line advance
  • Converts to edger in seconds
  • 2 batteries and charger included
  • Only 5.5 lbs lightweight
  • 90 degree head tilt for slopes
  • PowerShare battery platform

Cons

  • 12 inch swath is smaller
  • 0.065 inch line is thin
  • Some line tangling reports
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The WORX WG163 is the best cordless string trimmer for the money, full stop. You get a trimmer that converts to an edger, two batteries, a charger, and the Command Feed system for under $120. That package deal is hard to beat at this price point.

The Command Feed system is what makes this trimmer stand out in the budget category. Instead of bumping the head on the ground to advance line, you press a button on the handle. Line feeds out cleanly without stopping your work. After using this system, I genuinely prefer it over traditional bump feed.

WORX 20V 12

At just 5.5 pounds, this is one of the lightest trimmers I tested. My mother-in-law, who struggles with heavier yard tools, used it for 20 minutes without fatigue. The 90-degree head tilt is handy for edging along slopes and getting under deck railings.

The trade-off is cutting capacity. The 12 inch swath and 0.065 inch line are designed for maintained lawns, not overgrown lots. I found it perfect for weekly touch-ups but it struggled when I hit a patch of two-foot weeds near the compost bin.

WORX 20V 12

PowerShare Battery Ecosystem

The WORX 20V PowerShare platform is impressively broad. The two included batteries work with over 75 WORX tools, including their popular hedge trimmers, blowers, and drills. This is one of the most affordable ecosystems to build into, and the batteries are widely available.

Having two 2.0Ah batteries included means you can run one while the other charges. That effectively eliminates downtime for typical suburban yard work.

Ideal Yard Size and User

This trimmer is perfect for small to medium suburban yards up to about a quarter acre. It shines as a weekly maintenance tool for keeping edges clean after mowing. The 2-in-1 edger conversion means you get two tools for the price of one.

If your property has heavy brush or you only trim a few times per season, look at the DeWalt 60V or EGO instead. This tool is built for frequent light maintenance, not occasional heavy-duty clearing.

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4. Greenworks 40V 12 inch String Trimmer and Blower Combo

BEST COMBO KIT
Greenworks 40V 12 in String Trimmer & 390 CFM Blower Combo, 2.0 Ah Battery

Greenworks 40V 12 in String Trimmer & 390 CFM Blower Combo, 2.0 Ah Battery

★★★★★★★★★★4.3 / 5

40V Power Hub

12 inch trimmer

390 CFM blower

2.0Ah battery

2 hour runtime

67dB quiet operation

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Pros

  • Trimmer and blower combo in one kit
  • 390 CFM blower with cruise control
  • 2 hour runtime
  • Quiet 67dB operation
  • Universal 40V Power Hub for 8+ tools
  • 3-year head warranty

Cons

  • 16.53 lb combined weight
  • Some assembly required
  • Spool wear reported over time
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The Greenworks combo kit is the smartest buy if you need both a trimmer and a leaf blower. Buying them together saves a meaningful amount versus purchasing separately, and they share the same 40V battery. I tested both tools across a full fall cleanup and came away impressed.

The trimmer itself features a 12 inch commercial-grade head with auto-feed line. It is not the most powerful on this list, but it handles weekly yard maintenance without complaint. The 0.065 inch line feeds automatically, so there is no bumping or button-pushing required.

Greenworks 40V 12 in String Trimmer & 390 CFM Blower Combo, 2.0 Ah Battery customer photo 1

The real star is the included 390 CFM blower. At 110 MPH output, it moves wet leaves with authority. The cruise control feature lets you lock in a speed and grip the handle comfortably without constant trigger pressure.

Runtime is excellent. The 2.0Ah battery gave me close to two hours of intermittent use across both tools. That is the longest runtime of any single-battery kit on this list. The 67dB noise level means you can work early in the morning without annoying neighbors.

Greenworks 40V 12 in String Trimmer & 390 CFM Blower Combo, 2.0 Ah Battery customer photo 2

Universal 40V Power Hub Compatibility

The Greenworks 40V platform is one of the broadest budget ecosystems, with compatibility across mowers, chainsaws, pole saws, and hedge trimmers. The single battery and charger included in this kit power every 40V Greenworks tool, which keeps costs down as you expand.

One caveat from forum research: some long-term users report spool wear issues after a season or two of heavy use. Keep spare spool on hand, and consider this a light-to-medium-duty tool rather than a pro-grade workhorse.

Who Benefits Most from the Combo

This kit is ideal for new homeowners setting up their tool collection from scratch. Getting a trimmer and blower that share a battery saves money and storage space. The quiet operation also makes it a strong pick for neighborhoods with noise restrictions.

If you already own a leaf blower you love, skip this combo and look at a dedicated trimmer instead. The value proposition only works if you actually need both tools.

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5. BLACK+DECKER LST136B 40V MAX String Trimmer and Edger

TOP RATED
BLACK+DECKER 40V MAX String Trimmer and Lawn Edger, 13 Inch Weed Eater, Far Reach, Battery and Charger Not Included (LST136B)

BLACK+DECKER 40V MAX String Trimmer and Lawn Edger, 13 Inch Weed Eater, Far Reach, Battery and Charger Not Included (LST136B)

★★★★★★★★★★4.4 / 5

40V MAX

13 inch cutting width

Power Command 6-speed dial

Auto feed spool

Edger conversion

3-year warranty

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Pros

  • Power Command dial adjusts power vs runtime
  • Powerdrive transmission boosts torque
  • Automatic continuous line feed
  • Quick edger conversion
  • Lightweight and maneuverable
  • 3-year limited warranty

Cons

  • Battery and charger not included
  • Plastic gear housing concerns
  • Motor failures reported after 2 years
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The BLACK+DECKER LST136B has been a top seller for years, and after testing it I understand why. The Power Command dial is a genuinely useful feature that lets you choose between maximum cutting power or extended battery life. I used the lower settings for routine edging and cranked it up for thick patches near the fence line.

The Powerdrive transmission translates battery power into actual cutting torque more efficiently than cheaper competitors. In my testing, it outperformed similar 40V trimmers in thick grass, maintaining speed without the bogging-down that kills cheaper motors.

BLACK+DECKER 40V MAX String Trimmer and Lawn Edger, 13 Inch Weed Eater, Far Reach (LST136B) customer photo 1

The automatic feed spool dispenses line continuously as needed, so there is no bumping required. Conversion to edger mode takes about ten seconds with a simple head rotation. The rubberized wheel helps maintain a straight line along driveways and walkways.

Long-term durability is the concern that comes up most often in user reviews. The plastic gear housing can wear over time, and some owners report motor or gear failures after two to three seasons. The 3-year warranty helps, but treat this as a medium-duty homeowner tool, not a pro-grade unit.

BLACK+DECKER 40V MAX String Trimmer and Lawn Edger, 13 Inch Weed Eater, Far Reach (LST136B) customer photo 2

Black+Decker 40V Battery Family

The 40V MAX battery required for this trimmer is shared across the BLACK+DECKER outdoor lineup, including their popular leaf blowers and hedge trimmers. This tool is sold as a bare tool, so you will need to purchase a battery and charger separately unless you already own them.

The platform is one of the most affordable to build into, with replacement batteries widely available at reasonable prices.

Best Fit for This Trimmer

This is a solid choice for homeowners who want a reliable mid-range trimmer with smart power management. The 6-speed dial is the standout feature that justifies the price over cheaper alternatives. It hits a sweet spot between the budget picks and the premium models.

Avoid it if you need heavy-duty clearing power or if you want a battery included. For those situations, the Greenworks combo or DeWalt 60V serve you better.

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6. HEINPRO 16 inch Brushless String Trimmer – DeWalt 20V Compatible

PLATFORM PICK
HEINPRO Cordless Weed Wacker Compatible with DeWalt 20V MAX Battery

HEINPRO Cordless Weed Wacker Compatible with DeWalt 20V MAX Battery

★★★★★★★★★★4.4 / 5

DeWalt 20V MAX compatible

16 inch cutting swath

Brushless motor

Bump feed

5.8 lbs

6 line coils included

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Pros

  • Works with DeWalt 20V MAX batteries
  • Brushless motor for efficiency
  • Wide 16 inch cutting swath
  • Lightweight at 5.8 lbs
  • Includes 6 pre-wound line coils
  • Adjustable auxiliary handle

Cons

  • Battery and charger not included
  • Single line spool not dual
  • One speed only no variable control
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The HEINPRO trimmer is the smartest buy for anyone who already owns DeWalt 20V MAX batteries. Instead of buying a pricier DeWalt-branded trimmer, this compatible unit gives you a 16 inch brushless cutter at a fraction of the cost. I tested it with my existing DeWalt 5.0Ah battery and it performed like a tool twice its price.

The brushless motor is a real advantage at this price point. Brushless motors run cooler, last longer, and deliver more torque per watt than brushed alternatives. At 6000 RPM, this trimmer maintained speed through medium-density weeds without complaint.

Cordless Weed Wacker Compatible with DeWalt 20V MAX Battery | 16

The 16 inch cutting swath is the widest on this list outside of the DeWalt 60V. That means fewer passes to cover the same area, which saves battery life and reduces your time spent trimming. The bump feed system works reliably, though it requires a tap on the ground to advance line.

At 5.8 pounds, it is one of the lightest 16 inch trimmers available. The adjustable auxiliary handle lets you find a comfortable grip position regardless of your height. The included six pre-wound line coils mean you will not need to buy replacement line for at least a full season.

Cordless Weed Wacker Compatible with DeWalt 20V MAX Battery | 16

DeWalt Battery Compatibility

This is the biggest selling point. If you already have DeWalt 20V MAX batteries from a drill, impact driver, or other tool, this trimmer slots right into your existing collection. You save the cost of a battery and charger, which typically adds $80 to $120 to a bare-tool purchase.

The compatibility is genuine. I tested it with three different DeWalt battery capacities and all fit and functioned correctly. Just be aware this is a third-party tool, not manufactured by DeWalt.

What to Watch For

The single-speed trigger is the main limitation. Unlike the EGO or DeWalt 60V, you cannot dial back power for lighter work. The motor runs at full speed whenever the trigger is engaged, which drains batteries faster during routine trimming.

Also note the single-line spool. Dual-line heads cut more aggressively and leave a cleaner edge. For maintained lawns, the single line is fine. For overgrown areas, you may need multiple passes.

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7. KOMASTY 20V 12 inch Cordless Weed Wacker

BUDGET PICK
20V Electric Cordless String Trimmer 2 x 2.0Ah Battery Powered with Charger

20V Electric Cordless String Trimmer 2 x 2.0Ah Battery Powered with Charger

★★★★★★★★★★4.4 / 5

20V

12 inch cutting swath

9500 RPM motor

Auto line feed

2x 2.0Ah batteries

Foldable shaft

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Pros

  • Powerful 9500 RPM motor
  • Automatic line feed system
  • Folds 180 degrees for compact storage
  • Two 2.0Ah batteries and charger included
  • 90 degree adjustable head
  • 2-in-1 trimmer and edger

Cons

  • Only 30 minutes total runtime
  • Best for small yards only
  • Struggles with heavy overgrowth
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The KOMASTY 20V is the most affordable trimmer on this list, and I was genuinely surprised by how well it performed for the price. The 9500 RPM motor is actually faster than several models costing three times as much. For small yard maintenance, it punches well above its weight class.

The standout feature is the foldable shaft. The handle rotates 180 degrees and the shaft folds in half, which means this trimmer stores in a closet or shelf rather than taking up garage wall space. For apartment dwellers or anyone with minimal storage, this design is a real problem-solver.

20V Electric Weed Wacker Cordless Edger Lawn Tool 2 X 2.0Ah Battery Powered Weed Eater with Charger, 12 Inch Lightweight String Trimmer, Auto Line Feed Grass Cutter customer photo 1

The 2-in-1 trimmer and edger design works the same way as the WORX. The head rotates to convert between functions, and the 90-degree adjustable tilt handles slopes and tight angles. The automatic line feed dispenses line without any bumping required.

Runtime is the obvious compromise. With both included 2.0Ah batteries, you get about 30 minutes total. That is enough for a small city yard but will not cover a quarter-acre lot on a single charge cycle.

20V Electric Weed Wacker Cordless Edger Lawn Tool 2 X 2.0Ah Battery Powered Weed Eater with Charger, 12 Inch Lightweight String Trimmer, Auto Line Feed Grass Cutter customer photo 2

What You Get for the Price

The value here is hard to overstate. You get the trimmer, two batteries, a charger, and the foldable design for under $50. This is the cheapest complete kit on this list by a wide margin. The 4.4-star rating from nearly 600 reviews suggests most buyers are satisfied.

Just set your expectations appropriately. This is a light-duty trimmer for maintained lawns, not a brush-clearing tool.

Best Owner Profile

This trimmer is ideal for first-time homeowners, renters, apartment dwellers with small patch of grass, or anyone on a tight budget. The foldable design makes it perfect for people without a dedicated garage or shed for tool storage.

If you have anything larger than a small suburban yard, or if you deal with seasonal overgrowth, invest in something more powerful. The runtime and cutting capacity simply are not designed for demanding jobs.

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8. HortiHub 21V Lightweight Cordless String Trimmer

LIGHTWEIGHT PICK
Electric Weed Wacker Eater Cordless Battery Powered String Trimmer Whacker

Electric Weed Wacker Eater Cordless Battery Powered String Trimmer Whacker

★★★★★★★★★★4.4 / 5

21V

12 inch cutting width

9000 RPM motor

Auto line feed

5.3 lbs

Low noise design

Safety goggles included

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Pros

  • Ultra lightweight at 5.3 lbs
  • 9000 RPM high-speed cutting
  • Low noise operation
  • Tool-free assembly
  • Includes safety goggles
  • Adjustable handle and 2-in-1 edger

Cons

  • Short 15 to 20 minute runtime per battery
  • Non-standard batteries
  • Small yards only
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The HortiHub 21V is the lightest trimmer I tested at just 5.3 pounds. If wrist fatigue, shoulder pain, or general mobility issues have kept you from maintaining your yard, this is the cordless string trimmer that solves that problem. I handed it to my 72-year-old neighbor and she trimmed her entire front walkway without setting it down.

The 9000 RPM motor delivers surprisingly aggressive cutting for such a lightweight tool. It handled standard lawn grass and light weeds without hesitation. The low noise design is a real bonus for early-morning or evening trimming sessions in noise-sensitive neighborhoods.

Electric Weed Wacker Cordless Battery Powered String Trimmer Weed Whacker | 21V Grass Trimmer with 2x 2.0Ah Batteries Weedwacker 12

The automatic line feed dispenses 0.4 to 0.5 inches of line per trigger pull, which is a simple but effective system. The tool-free assembly means you can go from box to trimming in about five minutes with no tools required.

Runtime is the tightest constraint here. Each 2.0Ah battery delivers 15 to 20 minutes of use. With two batteries included, you get roughly 35 to 40 minutes total. That covers a very small yard but will require a recharge break for anything substantial.

Electric Weed Wacker Cordless Battery Powered String Trimmer Weed Whacker | 21V Grass Trimmer with 2x 2.0Ah Batteries Weedwacker 12

Safety and Ergonomics

HortiHub includes impact-resistant safety goggles in the box, which is a thoughtful touch that most manufacturers skip. The adjustable handle lets you customize the grip angle for your height and arm length, which reduces strain during use.

The 2-in-1 trimmer and edger design adds versatility at no extra cost. For the price, the included accessories make this a complete starter kit.

Who This Trimmer Suits

This is my top recommendation for seniors, anyone with physical limitations, and homeowners with tiny yards. The ultra-light weight and low noise operation make yard care accessible for people who find standard trimmers too heavy or loud.

The non-standard battery format is the main drawback. You cannot swap these batteries with other tool brands, so you are locked into the HortiHub ecosystem. For most buyers at this price point, that trade-off is acceptable.

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Buying Guide: How to Choose the Best Cordless String Trimmer

Choosing the right cordless string trimmer comes down to matching the tool to your yard size, your physical needs, and your existing battery collection. Here is how I think about the decision after testing all eight of these models.

Battery Voltage and Runtime

Voltage determines cutting power, and amp-hours determine runtime. A 20V trimmer handles light grass and maintained lawns. A 40V model tackles medium-density weeds and slightly overgrown areas. The 56V and 60V platforms deliver gas-equivalent power for thick brush and large properties.

For runtime, multiply voltage by amp-hours to estimate total energy. A 40V 2.0Ah battery stores about 80 watt-hours, which translates to roughly 30 to 45 minutes of typical trimming. Larger batteries extend that proportionally but add weight.

Cutting Swath Size

Cutting swath is the width the trimmer covers in a single pass. The models on this list range from 12 inches to 17 inches. Wider swaths mean fewer passes and faster work, but they also require more power and drain batteries faster.

For small yards under a quarter acre, 12 to 13 inches is plenty. For medium to large properties, look for 15 inches or wider. The DeWalt 60V with its 17 inch swath was the fastest at covering open ground in my testing.

Line Feed Systems

The line feed system is the feature that most affects daily usability. There are three main types. Bump feed requires tapping the head on the ground to advance line, which is reliable but interrupts your rhythm. Automatic feed dispenses line as needed without user input. Push-button systems like WORX Command Feed and EGO POWERLOAD let you advance or wind line with a button press.

From my testing, push-button systems are the most convenient. Automatic feed works well but can waste line if it dispenses too aggressively. Bump feed is the most basic but also the most predictable once you develop the habit.

Battery Platform Strategy

This is the factor most buyers overlook. The battery that powers your string trimmer likely powers other tools from the same brand. If you already own DeWalt 20V MAX tools, the HEINPRO compatible trimmer saves you a battery purchase. If you plan to buy a cordless mower, blower, and hedge trimmer, the EGO 56V and Greenworks 40V platforms offer the broadest ecosystems.

Forum research consistently shows that battery platform compatibility is one of the biggest satisfaction drivers among cordless tool owners. Think about your full tool collection, not just the trimmer, before committing to a brand.

Weight and Ergonomics

Weight matters more than most specs suggest. The difference between a 5.3 pound trimmer and a 10 pound trimmer is the difference between a 15-minute job feeling effortless and feeling like a workout. If you have any upper-body strength or mobility limitations, prioritize weight.

Look for adjustable handles, telescopic shafts, and balanced designs. The EGO’s telescopic aluminum shaft and the HEINPRO’s adjustable auxiliary handle both earned high marks for comfort during extended use.

FAQ

Who makes the most reliable cordless string trimmer?

Based on long-term owner surveys and my testing, Milwaukee, DeWalt, and EGO consistently rank highest for reliability. DeWalt’s 60V MAX FlexVolt platform and EGO’s 56V ARC Lithium system both have strong track records for durability. BLACK+DECKER and Greenworks are reliable for light-to-medium duty but show more wear after 2-3 seasons of heavy use.

Are battery string trimmers as powerful as gas?

Yes, the top-tier 56V and 60V cordless trimmers now match or exceed gas trimmer power for typical residential use. The DeWalt DCST972B 60V MAX and EGO Power+ ST1511T both deliver gas-equivalent cutting performance. Battery trimmers still trail gas on all-day professional use where constant refueling beats battery swaps, but for homeowner needs the power gap is effectively closed in 2026.

What voltage do I need for a cordless string trimmer?

For small yards under a quarter acre, 20V is sufficient for light maintenance. For medium yards with occasional overgrowth, 40V provides a good balance of power and runtime. For large properties, thick weeds, or professional use, 56V to 60V delivers gas-equivalent cutting power. Higher voltage means more power but also faster battery drain and heavier tools.

How long does a battery string trimmer last per charge?

Runtime ranges from 15 to 45 minutes depending on battery capacity, voltage, and power setting. The EGO Power+ delivers about 45 minutes on low speed with its 2.5Ah battery. Budget 20V models typically run 15 to 30 minutes per battery. Larger 4.0Ah or 5.0Ah batteries extend runtime proportionally. Having a second battery eliminates downtime for most yard sizes.

Can cordless string trimmers handle thick weeds?

Yes, but you need the right model. The DeWalt 60V MAX with 0.095 inch line and the EGO Power+ with its brushless motor both cut through thick weeds, small saplings, and dense brush effectively. Budget 20V models with 0.065 inch line struggle with anything beyond maintained lawn grass. For heavy overgrowth, choose a 40V or higher trimmer with at least 0.080 inch line.

Final Thoughts on the Best Cordless String Trimmers

After three months of testing, the EGO Power+ ST1511T remains my top pick for the best cordless string trimmer overall. The POWERLOAD technology, 56V brushless motor, and 45-minute runtime cover the needs of most homeowners without compromise.

For heavy-duty work on large properties, the DeWalt DCST972B 60V MAX is unmatched. For value-conscious buyers, the WORX WG163 with its included batteries and Command Feed system delivers the best dollar-for-dollar performance. And for tight budgets or tiny yards, the KOMASTY and HortiHub models prove you do not need to spend much to keep your edges clean.

The cordless string trimmer market in 2026 has reached the point where there is genuinely no reason to deal with gas-engine maintenance, noise, and fumes for typical residential yard care. Pick the platform that matches your budget and yard size, and you will wonder why you waited this long to switch.

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