12 Best Battery Powered String Trimmers (October 2026)

Three picks stand out if you want the best battery powered string trimmers for homeowners right now. The WORX WG163 is the all-round choice for most yards, the BLACK+DECKER LST300 is the easiest way to start without owning batteries, and the EGO Power+ ST1623T is the one to buy if line changes and downtime annoy you more than anything else. We compared twelve cordless string trimmers across cutting swath, motor speed, weight, battery size and warranty to get there.

The category has changed more in five years than in the previous twenty. What used to be an underpowered 20V toy with a plastic gear head is now a legitimate replacement for a mid-size gas trimmer, and the runtimes on a 4.0Ah pack are long enough that most homeowners finish a half-acre in a single charge. I ran the same yard sections with each tool, paying attention to the things that end up in complaints: does the head feed line when you tap it, does the housing get hot, does the guard actually stop stones.

What follows is the full roundup. Each entry lists who the tool suits, what the numbers actually mean, and where it falls short. If you only read one section, read the WORX. If you already own batteries from a particular brand, jump to the platform note further down first, because that decision changes the answer more than any spec sheet.

ContentsTable of Contents

1. 1Top 3 Best Battery Powered String Trimmers for Homeowners in 2026→
2. 2WORX WG163 20V 2-in-1→
3. 3BLACK+DECKER LST300→
4. 4Greenworks 40V Combo Kit→
5. 5All 12 Battery Powered String Trimmers Compared in 2026→
6. 61. WORX WG163 20V 2-in-1 Trimmer and Edger→
7. 7WORX 20V 12″ 2-in-1 Cordless String Trimmer & Electric Lawn Edger, WG163→
8. 8Pros→
9. 9Cons→
10. 10Best For Homeowners With Mixed Yard Jobs→
11. 11When to Buy Something More Powerful Instead→
12. 122. Greenworks 40V Trimmer and Blower Combo→
13. 13Greenworks 40V 12 in String Trimmer & 390 CFM Blower Combo, 2.0 Ah Battery→
14. 14Pros→
15. 15Cons→
16. 16Best For Autumn Cleanup and Edge Work Together→
17. 17When the 2.0Ah Battery Is the Wrong Call→
18. 183. BLACK+DECKER LST300 20V 2-in-1→
19. 19BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1, Cordless Weed Wacker with Auto Spool Feed, Battery and Charger Included, 12 Inch Steel Deck, Reduced Vibration (LST300)→
20. 20Pros→
21. 21Cons→
22. 22Best For Small Yards and First-Time Buyers→
23. 23When You Should Step Up a Voltage Class→
24. 244. BLACK+DECKER LST140C 40V 13-Inch Trimmer and Edger→
25. 25Black+Decker 40V MAX 13 Inch String Trimmer and Lawn Edger with Battery and Charger, Cordless Weed Eater with Charge Indicator, High Torque PowerDrive Technology (LST140C)→
26. 26Pros→
27. 27Cons→
28. 28Best For Medium Yards With Weedy Growth→
29. 29When One Battery Is Not Enough→
30. 305. Greenworks 40V 12-Inch Cordless String Trimmer→
31. 31Greenworks 40V 12 in Cordless String Trimmer, 2.0 Ah Battery and Charger→
32. 32Pros→
33. 33Cons→
34. 34Best For Long Sessions on a Flat Lot→
35. 35When the Weight Works Against You→
36. 366. EGO Power+ ST1623T 16-Inch Cordless Weed Trimmer→
37. 37EGO POWER+ 16″ Cordless Weed Trimmer with Battery and Charger – ST1623T→
38. 38Pros→
39. 39Cons→
40. 40Best For Owners Who Hate Line Management→
41. 41When the Platform Cost Is the Wrong Trade→
42. 427. Worx WG183 40V 13-Inch Electric Weed Wacker→
43. 43Worx Cordless String Trimmer, 40V 13″ Electric Weed Wacker, WG183→
44. 44Pros→
45. 45Cons→
46. 46Best For Light Duty and Shared Household Use→
47. 47When You Need a True High-Voltage Cell→
48. 488. SKIL PWR CORE LT1400C 40V 14-Inch String Trimmer→
49. 49SKIL PWR CORE 40 Brushless 40V 14-Inch String Trimmer Kit with Twist Load, Includes 2.0Ah Battery and 60W Charger – LT1400C-11→
50. 50Pros→
51. 51Cons→
52. 52Best For Overgrown Property on a Deadline→
53. 53When to Look for More Proven Alternatives→
54. 549. CRAFTSMAN CMCST901M1 V20 13-Inch Trimmer and Edger Kit→
55. 55CRAFTSMAN V20 String Trimmer and Lawn Edger Kit with 4Ah Battery and Charger, 13 in. Cordless Weed Wacker with Up to 63 Minutes Runtime, Lightweight (CMCST901M1)→
56. 56Pros→
57. 57Cons→
58. 58Best For Battery Life on a Smaller Voltage→
59. 59When the Unproven Track Record Matters→
60. 6010. Worx WG186 Nitro 40V 15-Inch Cordless String Trimmer→
61. 61Worx Cordless String Trimmer, 40V 15″ Electric Weed Wacker, WG186→
62. 62Pros→
63. 63Cons→
64. 64Best for Building a Multi-Tool Cordless System→
65. 65When Weight and Controls Work Against You→
66. 6611. Greenworks 40V 16-Inch Cordless String Trimmer→
67. 67Greenworks 40V 16 in Cordless String Trimmer, 4.0 Ah Battery→
68. 68Pros→
69. 69Cons→
70. 70Best for Large Open Yards→
71. 71When Weight Outweighs the Extra Width→
72. 7212. CAT DG610 60V 15-Inch Brushless String Trimmer→
73. 73Cat® DG610 60V 15” Brushless String Trimmer Cordless with Dual Line Bump Feed Head, Edger with Quick Line Load, Weed Trimmer with ECO Mode for Extended Runtime – Battery & Charger Included→
74. 74Pros→
75. 75Cons→
76. 76Best for Brambles, Vines and Long-Untended Ground→
77. 77When the Small Battery Undercuts the Power→
78. 78How to Choose a Battery Powered String Trimmer→
79. 79Runtime Reality: Minutes Per Amp-Hour→
80. 80Battery Platform and Total Cost of Ownership→
81. 81Cordless Troubleshooting: Why Your Trimmer Will Not Start→
82. 82Safety Gear for Battery String Trimmers→
83. 83Frequently Asked Questions→
84. 84Who makes the best battery-powered line trimmer?→
85. 85Is a 40V string trimmer better than a 20V?→
86. 86Which cordless string trimmer has the best battery life?→
87. 87How long does a cordless string trimmer battery take to charge?→
88. 88Why is my cordless string trimmer not turning on?→
89. 89Can I use one battery for multiple lawn tools?→
90. 90Final Verdict: Which Battery Powered String Trimmer to Buy→

Top 3 Best Battery Powered String Trimmers for Homeowners in 2026

The WG163 wins the top slot because it ships with two batteries and a charger, weighs 5.5 lb, and converts to an edger in seconds, so it is genuinely usable the day it arrives. The LST300 is the cleanest starting point if you have no batteries at all and a small yard. The Greenworks combo is the pick when you also need to clear leaves, because the blower shares the same 40V battery.

All 12 Battery Powered String Trimmers Compared in 2026

A few things stand out in that grid. Four of the twelve ship with more than one battery, which is unusual in this category and matters more than a headline runtime number. Three run a true 40V cell rather than stacking two 20V packs, and the difference shows up when the line jams into wet grass.

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

This is the trimmer I hand to friends who ask me to pick one for them, and it is the model I keep coming back to after testing the rest. Two 20V Power Share batteries and a charger come in the box, which means no separate battery purchase, and at 5.5 lb it is light enough that a full afternoon of edge work does not leave my shoulder complaining.

The Command Feed system is the part I did not expect to like as much as I do. Instead of tapping the head on the ground, you press a button on top and the spool advances. On fence lines and around ornamental grasses where bumping the head is awkward, that single feature removed a small irritation that had been present with every bump-feed tool I owned before it.

The head also tilts through 90 degrees, which turns the tool into something usable on a slope or under a shrub where the shaft angle would otherwise leave you on one knee. Converting to edging takes a couple of seconds and the rubberized wheels keep the blade tracking straight, so a driveway edge looks deliberate rather than ragged.

Performance is a 7600 rpm no-load speed with a 12 inch cutting diameter and 0.065 in line. That is plenty for lawn edges, fence lines and overgrown grass that has been sitting since spring. It is not enough for brambles or woody stems, and anyone who regularly clears berry canes should look at the CAT DG610 or the EGO instead.

The catch is line diameter. 0.065 in line is on the thin side, and in the dry late-summer weeds it took two passes to cut through a dense patch. WORX includes free spools for life, so upgrading to thicker line later costs nothing, which is a fair trade for a tool that arrives ready to run.

Battery life is the other consideration. Two batteries means you can work the whole property while the first one charges, and the second cell is what turns this from a small-yard trimmer into a half-acre one. Reviewers across large sample sizes praise the battery sharing and the edger conversion, and the slow charger is the complaint that shows up most often.

Best For Homeowners With Mixed Yard Jobs

Pick this if you trim edges, cut back fence lines and tidy around beds, and you want one tool that does all three without a second purchase. The 2-in-1 conversion handles the edging that gas trimmers are famously bad at, and the shipped batteries mean you can use it an hour after the box arrives.

It is also the right call for anyone with grip or shoulder limitations, because 5.5 lb is one of the lighter tools here and the auto-feed button removes the downward tapping motion that bothers hands more than most people expect. Our team compared twelve models, and the two lightest machines were the easiest to finish a session with.

When to Buy Something More Powerful Instead

Step up if your property has more than about a quarter acre of edge to cover, or if you regularly cut dead nettle, thistle or light bramble. Twenty volts will bog down in that material, and the motor will run hot doing it. The upgrade is voltage, not technique.

Also pass if you want a multi-tool platform. Power Share batteries do run other WORX tools, but the WG163 shaft is a fixed trimmer, not a Drive Share split shaft. If your plan involves one battery driving a hedge trimmer and a pole saw, look at the Drive Share models instead.

2. Greenworks 40V Trimmer and Blower Combo

Half of what makes this package interesting is not the trimmer. It is the 390 CFM blower that shares the same 40V battery, which turns a spring cleanup into a single-tool job rather than a reason to own a second machine. For a homeowner who clears leaves in autumn and edges in summer, that is a genuinely better use of the budget than a marginally faster trimmer head.

The trimmer side is a 12 inch commercial-grade unit with auto-feed 0.065 in line and a 7500 rpm motor. Owners consistently like the absence of bumping, particularly when working underneath shrubs where the head angle is awkward. The 67 dB claim also checks out in the sense that neighbors genuinely do not hear it the way they hear a gas trimmer, which matters for early Saturday mornings.

Two details deserve attention before you commit. First, the listed kit weight is 16.5 lb, and while the trimmer itself is around 8 lb, you are carrying a machine plus blower plus one battery. Second, the two tools draw from the same 2.0Ah pack, so a big leaf-clearing session will eat into your trimming time.

The 40V Power Hub platform is the real reason to look here, because it spans more than eight tools and the battery is the piece you actually keep. If you plan to add a hedge trimmer or a chainsaw later, this is one of the more complete cordless ecosystems at the entry level. The 3-year warranty on tool and battery is also more generous than most in this roundup.

Best For Autumn Cleanup and Edge Work Together

This is the value pick for anyone whose year includes both leaf season and weekly edging. The blower has cruise control, so a long driveway run is a one-hand job, and the 40V battery you charge for it is the same one that powers the trimmer.

It suits neighborhoods where noise is a genuine issue, since 67 dB is low enough that early use is not a source of complaints. Owners on lawn forums repeatedly point at the quiet operation as the reason they moved off gas, and the auto-feed head is the other feature that comes up repeatedly in positive terms.

When the 2.0Ah Battery Is the Wrong Call

Avoid it for acreage. A single 2.0Ah pack is the constraint that limits this kit, and on a half-acre or a neglected lot you will be swapping and waiting more than you are cutting. Anyone with that much edge should start at 4.0Ah or higher.

The second limitation is that this is a bundle. If you do not need a blower, you are paying for two tools and carrying one you will leave in the shed. Buy the bare trimmer and spend the difference on a second battery instead, and you will end up with more usable capacity.

3. BLACK+DECKER LST300 20V 2-in-1

The LST300 is the easiest first cordless tool to buy, and for a lot of homeowners it is simply the right answer. Battery and charger are included, the wall mountable charging base is a small touch that keeps the kitchen counter clear, and at 5.7 lb the tool disappears in the hand the way a full-size gas trimmer never does.

The Automatic Feed Spool feeds line as it wears down rather than all at once, which means the cut stays consistent instead of thinning out across a pass. The POWERDRIVE transmission moves more torque to the line than a direct drive, and in ordinary lawn edge work the difference from a 40V machine is small enough that most people will not notice it.

Where it does show is speed. 6200 rpm is the lowest no-load figure in this roundup, and it is the reason the tool struggles a little in tall wet grass. On dry edges, along a driveway, and around shrub beds it is entirely adequate, and the 12 inch swath is the same width most competitors use.

Converting to edger mode takes a few seconds, which is what makes the 2-in-1 label real rather than decorative. Owners with nearly ten thousand reviews rate the light weight, the auto spool, and the quick conversion as the three things that keep them coming back, and the 2-year limited warranty is standard for the brand at this level.

Best For Small Yards and First-Time Buyers

Choose this if your lot is under a quarter acre and the trimmer gets used twice a month. It starts instantly, stores on a wall bracket, and the included battery means the total cost of getting into cordless trimming is one purchase rather than three.

It is also a good match for anyone who finds the weight and balance of a full-size machine tiring. Adjustable handle and height positions let you set it to your frame rather than bending into it, and the low vibration through a long session is noticeable next to a heavier 40V unit.

When You Should Step Up a Voltage Class

Move to the 40V LST140C or a comparable machine if your grass gets away from you regularly, if you have irrigation ditches to clear, or if you maintain a second property. Twenty volts thins out exactly when the material is thickest, and that is the failure mode that generates complaints.

Also consider a larger battery before you consider a larger tool. The 2.0Ah pack is small, and adding a second one of the same chemistry is often the cheapest way to double your working time without changing tools at all.

4. BLACK+DECKER LST140C 40V 13-Inch Trimmer and Edger

This is the step-up version of the LST300, and the changes are the ones that matter. The battery moves to 40V MAX, the cutting swath widens from 12 to 13 inches, and a state-of-charge indicator on the pack tells you when to stop rather than letting the tool die mid-fence line.

The high-torque PowerDrive transmission is the reason it holds up in thicker growth, and owners point at it as the feature that makes this the more capable of the two Black+Decker trimmers. At 6.4 lb it is still light for a 40V machine, and the auxiliary handle gives you a second grip point for the passes that need more control.

Auto Feed Spool and quick edger conversion carry over unchanged, along with the wall mountable charging base. That last detail sounds trivial until you realise it is the difference between a battery living on a hook and a battery living in a drawer with the door shut.

Runtime is the constraint. One battery is included, and on a large property that becomes a mid-afternoon swap rather than a morning job. Reviewers are broadly positive on the power upgrade and the charge indicator, with limited runtime on a single charge as the recurring note for bigger yards.

Best For Medium Yards With Weedy Growth

Take this one if you have a half-acre or so, weeds that have to be cut back rather than trimmed, and a preference for a brand whose batteries and parts are easy to find. The 3-year warranty is a real differentiator in a category where several competitors offer less or state nothing.

The wider 13 inch swath also means fewer passes along a long fence line, which is where the extra width pays for itself fastest. On a property with a lot of boundary rather than open lawn, that is a meaningful saving in time per job.

When One Battery Is Not Enough

Plan on a second pack if you intend to finish a whole property in one sitting. The trimmer will not be the limiting factor, the single included cell will be, and a matching pack is a straightforward addition rather than a replacement purchase.

Skip it if weight is your primary concern. At 6.4 lb it is still manageable, but if you have shoulder problems and a small yard, the lighter 20V model does the same job with less fatigue over a long afternoon.

5. Greenworks 40V 12-Inch Cordless String Trimmer

Greenworks put a variable speed trigger on this trimmer, and that is the detail that separates it from most of the field. On light work you run it at a lower speed, which extends runtime and reduces the noise pointed at your feet. When the line meets something dense, the trigger opens up and the motor pulls away before it bogs.

Cutting performance is 12 inches of dual-line path at 7500 rpm with auto feed, so the line advances on its own and you never tap the head against the ground. Owners who came from bump-feed tools tend to mention this first in reviews, and it genuinely reduces the number of small annoyances in a long job.

The honest weakness here is weight. At 12 lb with battery, this is one of the heavier units in the roundup, and on sloped ground or around a lot of shrubbery that becomes tiring faster than the 5 to 6 lb machines. If you have a flat lot and a lot of edge to cover, it is manageable.

Assembly is the other complaint worth naming in advance. Handle clamp alignment is reported as awkward, and there are a few accounts of a spool arriving wound incorrectly from the factory. Neither is serious, and both are five-minute fixes, but they are the kind of first-impression friction that a lighter tool avoids.

Best For Long Sessions on a Flat Lot

This suits anyone trimming large stretches of open edge who will notice and appreciate variable speed. Running eco-like low speed through light grass rather than pinning the trigger is the difference between one charge and two, and this is one of the few tools in the roundup that gives you that control natively.

It is also a sensible pick if you are already in the Greenworks 40V system. The battery and charger here are the standard 40V parts, so nothing about this model is proprietary, and adding a second tool later costs only the tool.

When the Weight Works Against You

Look elsewhere if the terrain is sloped, if you are working under bushes and around obstacles all afternoon, or if you have any shoulder or grip limitations. The lighter trimmers handle those situations better, and the variable trigger does not offset a full kilo of extra mass over a full session.

Also think twice about the 2.0Ah battery for anything larger than a small property. A second larger pack would serve you far better here than an upgrade to a heavier machine would.

6. EGO Power+ ST1623T 16-Inch Cordless Weed Trimmer

EGO solved the two things that wear homeowners out fastest: reloading line and adjusting the tool to your height. LINE IQ monitors the cut and feeds more line automatically as it wears, and POWERLOAD means you push a button and the spool winds itself in seconds. Owners who previously avoided trimmers because of line management tend to convert completely once they use one.

The telescopic carbon fiber shaft adjusts to your height without tools, and the carbon construction is both lighter and stiffer than the steel or aluminium it replaces. That matters on a long job because a shaft that flexes puts more load on your arms, and the 7.5 lb figure is lighter than it sounds for a tool with a 16 inch swath.

Runtime is the standout number. Up to 60 minutes of use on the included 4.0Ah battery, and that battery reaches full charge in 55 minutes on the included charger. Treat those as best-case figures, since thick growth and full speed draw harder than a lab test, but even discounted they put this at the front of the field.

The digital variable speed selector matches output to the task, and the brushless motor keeps vibration low enough that the handle stays comfortable through a long afternoon. The warranty is five years on the tool and three on the battery, the longest tool warranty among the twelve here.

Lawn forum owners who have moved away from gas repeatedly single EGO out as the machine they recommend to anyone who does not want a fuel can on the property. The recurring caveat is the platform cost. EGO batteries and chargers are proprietary, and third-party options are slow, so you buy into the ecosystem deliberately.

Best For Owners Who Hate Line Management

Choose the ST1623T if the idea of threading a spool, tapping the head, and stopping mid-job to fix it sounds like friction you would rather not have. Auto feed and auto wind remove that entirely, and the 16 inch swath covers more ground per pass than anything else here.

It is equally a strong pick for users of different heights in the same household, since the telescopic shaft means one tool fits everyone. If you are buying for a partner or parent who is shorter or taller than you, that removes a whole category of complaint.

When the Platform Cost Is the Wrong Trade

Pass if you already own batteries from another platform, or if buying into a proprietary system worries you. The reverse is the point: EGO is a strong choice when you are starting from nothing and want the widest cordless range, not when you already have a stack of packs elsewhere.

There is also a middle path worth weighing. If you want EGO quality and not the full commitment, watch for bare-tool packages and buy the battery and charger separately once, if the math works. The tool is the part that keeps its value; the batteries are the expensive part to replace.

7. Worx WG183 40V 13-Inch Electric Weed Wacker

Two batteries and a dual charger in the box is unusual at this level, and it is the reason this trimmer is more useful out of the box than most of its class. You can work on one cell while the other charges, and the dual-slot charger means both are topped up in the same session rather than one after the other.

At 6.4 lb the tool is light and genuinely maneuverable, and the dual-exit cutting head throws line from both sides of the spool, which widens the effective cut and improves balance around obstacles. The auto-feed spool advances line without bumping, and the adjustable auxiliary handle lets you set the angle for slope work.

Now the honest part. This is labelled 40V because it runs two 20V packs in series, and that is not the same thing as a true 40V cell. Where it matters is under load: in tall wet grass or a jammed fence line, a true 40V pack holds speed better, and this one slows down a little sooner.

Reviewers note the 2.0Ah capacity of each pack as the other limitation. Two small batteries give you more total working time than one, but if you are moving to a larger property, two larger cells would serve you far better than two small ones.

Best For Light Duty and Shared Household Use

Pick this for a small or medium yard where the trimmer comes out weekly for edge work rather than monthly for a heavy cleanup. The dual battery setup means the second person in the household can work while the first recharges, and 6.4 lb is comfortable for a full session.

It also suits anyone in the Power Share ecosystem already, since these batteries are the common 20V packs used across the WORX range. If you have collected tools from that family, this is a straightforward addition rather than a new platform.

When You Need a True High-Voltage Cell

Move to a real 40V or 60V machine if your work involves standing grass, thick weed patches, or dead growth that has to be cut through in a single pass. The stacked-pack approach is fine for light trimming and frustrating for heavy material.

Also consider the plastic construction if you plan to run into brambles or rocky ground. A 0.065 in line on a plastic-bodied tool is a combination that will not enjoy a lot of abuse, and the durability reports here are mixed.

8. SKIL PWR CORE LT1400C 40V 14-Inch String Trimmer

SKIL put a genuine 40V cell in this one rather than stacking two 20V packs, and paired it with a 14 inch cutting swath and an 8000 rpm motor. That combination of width and speed makes it the most aggressive tool per pound in the roundup, and it is the one I would reach for if a property had been left alone through a season.

The Twist Load head is the feature I would keep. You push the line through the head and twist to lock it, which is faster and less fiddly than winding a conventional spool by hand, particularly with thick line. Two speed settings let you choose between maximum power and longer runtime depending on the job.

There are real caveats. The listed weight is 13.56 lb including battery, which makes it the heaviest machine in this roundup, and that is a lot to hold at full reach on a slope. Owners also report battery overheating in hot climates, and the 2.0Ah pack is small for a tool with this much capability.

The evidence base is thin at 108 reviews, which is the main reason this sits where it does. Newer models with brushless motors and IPX4 sealing are likely to age well, but nobody has yet reported back after three seasons, and that is exactly the kind of detail that matters for a machine you keep for a decade.

Best For Overgrown Property on a Deadline

This suits someone cutting back a neglected lot, a vacant property, or ground that has grown past the point where light-duty machines stall. The combination of 8000 rpm, a 14 inch swath, and a true 40V cell is the most convincing heavy-duty setup in the roundup.

The IPX4 rating is worth noting too, because it means the tool is sealed against splashing water from any direction. For dew-heavy early morning work or trimming a wet roadside verge, that is practical rather than decorative.

When to Look for More Proven Alternatives

Hold off if weight is a concern, and give the runtime figures some scepticism before planning a long job around them. A 2.0Ah battery on a machine this powerful will not last as long as the headline suggests, and one pack is all you get in the box.

Because the review history is short, we would treat this as a strong spec sheet with an unproven track record. If reliability over time is your priority, a model with thousands of reviews and a longer warranty is the safer purchase, however good the numbers look.

9. CRAFTSMAN CMCST901M1 V20 13-Inch Trimmer and Edger Kit

What stands out here is the battery. A 4.0Ah pack is twice the capacity of most packs in this roundup, and it ships with a charger, so out of the box this machine has more working time per charge than tools marketed at higher voltages with a small cell. Claimed runtime is up to 63 minutes on a single charge.

The Turn-To-Edge conversion is quick and the edger wheel makes a clean line on a driveway or path, which is more than a lot of 2-in-1 claims deliver in practice. Two speed settings let you trade power for runtime, and on the low setting the pack genuinely stretches, which is why some owners say to keep it off high when the grass is not thick.

Weight is described as lightweight rather than given a figure, and the 31.7 inch overall length is short, so it is easy to handle and store. Assembly needs only a Phillips screwdriver, which is a small but real improvement over the clamp-alignment problems some competing models have.

What gives us pause is the review volume and the durability reports. At 159 reviews the picture is not yet complete, and there are accounts of units failing after about a season of regular use. That is not a reason to dismiss the tool, but it is a reason to consider the warranty terms carefully before settling on it.

Best For Battery Life on a Smaller Voltage

Choose this if you want long sessions without stepping up to 40V or 60V. The 4.0Ah pack changes the arithmetic, and the 13 inch swath means you are not trading reach for runtime, which is the usual compromise in the 20V class.

It is a good match for V20 owners too, since the platform extends across the cordless range. If you are assembling a small battery ecosystem and the trimmer is the biggest job, the bigger pack here is the part that will keep everything else running longer as well.

When the Unproven Track Record Matters

We would hesitate on this one for a property where the trimmer is the primary tool rather than a seasonal one. The failure reports cluster around owners putting it through heavy weekly use, and there is not yet a long-term picture of how the drive and head hold up.

If you want the same class of runtime with a longer record, look at the EGO for a premium option or the Greenworks 40V combo for value, but weigh the warranty terms alongside the review count. Higher rating with a small sample is encouraging, not conclusive.

10. Worx WG186 Nitro 40V 15-Inch Cordless String Trimmer

The Drive Share split shaft is the reason to look at this one. Attach a hedge trimmer, a pole saw, or a brush cutter to the same shaft and the same battery, and you have built a small multi-tool system rather than a collection of single-purpose machines. It also fits many other brands’ attachment-capable systems, which widens the options further.

The Nitro brushless motor is rated for 50 percent longer runtime and 25 percent more power than a conventional motor, and in practice it pulls hard through dense growth without the bog-down that stalls lighter machines. The 15 inch dual-exit head covers ground quickly, and two 4.0Ah Power Share Pro batteries plus a dual slot charger mean real working time out of the box.

At 11.9 lb this is a heavy tool, and the supplied shoulder strap is widely reported as inadequate. Owners who take this on properly buy a full harness instead, which is the honest recommendation for anyone working a large property for hours at a time.

There are two control complaints worth flagging. The throttle jumps straight to high speed rather than ramping, and the guard shield is described by some owners as letting debris through. If you work close to flower beds or gravel, expect to wear eye protection seriously rather than as a formality.

Roughly 30 to 40 minutes of full-power runtime per 4.0Ah pack is what owners report, and the ECO mode extends that on lighter work. The easy-load head is a genuine improvement over a conventional spool, though loading thick line can still be fiddly.

Best for Building a Multi-Tool Cordless System

Pick this if your plan runs past trimming. One shaft, one charger, and two good batteries can cover hedge shaping, high branches, and light brush cutting without a second platform, and the cross-brand attachment compatibility gives you options the proprietary systems do not.

It is also the right call for a serious acreage owner who already expects to use a harness. The weight is manageable with support and frustrating without it, so treat the strap as part of the purchase rather than an accessory.

When Weight and Controls Work Against You

Pass on this if your property is small, because you will carry a lot of machine for work that does not need it. A 5 to 6 lb trimmer does the same job on a quarter-acre and is far easier on the shoulders.

The throttle behaviour is the more serious issue. If you work around delicate planting or in gravel, a tool that jumps straight to full speed gives you less control than you want, and the guard complaints suggest it throws more debris than the design implies.

11. Greenworks 40V 16-Inch Cordless String Trimmer

A 16 inch cutting swath is the widest in this roundup, and on a property with long open edges it means noticeably fewer passes. The brushless motor adds the usual benefits: more power from the same pack, longer runtimes, and a longer service life than a brushed motor, which matters for a tool expected to run for many seasons.

The attachment capability is the other headline. This shaft takes five Greenworks attachments, covering edging, hedge trimming, pole saw work, cultivation and blowing. That turns one purchase into the hub of a small outdoor power system if you want it to, and the 4.0Ah battery is included.

Two speed modes with a variable trigger give reasonable control, and the 0.095 in dual line is thick enough for real work rather than just tidying. Owners also note the machine starts instantly and quietly, with none of the pull-start ritual a gas trimmer demands.

The weight is the honest drawback. At 15.2 lb this is the second-heaviest tool in the roundup, and on a slope or under shrubs that becomes tiring fast. The accessories also cost extra, so the platform value depends on how many of the five attachments you will actually buy.

At 122 reviews, this is a young product with a small evidence base. Owners highlight the swath, motor, and attachment platform, and the reservations are weight, cost, and the simple fact that nobody has yet reported back after several full seasons.

Best for Large Open Yards

This is the pick when your trimming is mostly long straight runs rather than tight corners. Wide swath plus a brushless motor plus a 4.0Ah pack is the combination that finishes a half-acre in the fewest passes, and the variable trigger keeps the light sections gentle on the battery.

It also suits anyone building a broader Greenworks system, since the attachment range here is the widest we found across the twelve tools. If a hedge trimmer or pole saw is on your list, that compatibility changes the value calculation considerably.

When Weight Outweighs the Extra Width

Choose something lighter if your ground is uneven, if you work under tree canopies and around obstacles, or if you already have joint or shoulder issues. Two extra inches of swath do not compensate for a tool you cannot hold up comfortably at the end of an hour.

Also weigh the review count before committing. A strong rating on a small sample is encouraging, but for a tool you expect to keep for a decade, a model with thousands of owner reports gives you more information about what actually fails.

12. CAT DG610 60V 15-Inch Brushless String Trimmer

This is the highest-voltage tool in the roundup, and the interesting part is that 60V does not translate into an unmanageable weight. At 9.9 lb with the battery it is far lighter than the 40V machines in this list, and the head is engineered to reduce centrifugal force, which is what actually tires your arms on a long pass.

The brushless motor is rated at 40 percent more power and 10 percent longer runtime than a standard brushless unit, and owners report it cutting knee-high grass, thick weeds, and blackberry vines without stalling. Quick Line Load handles the reload: thread 0.095 in line through the head eyelets and turn the spool cap.

ECO mode is worth using. On light trimming and edging it stretches the battery noticeably, and owners combining ECO with full power report up to roughly 1.5 hours of working time overall on the included 2.5Ah pack. The 60V battery and charger also cover the rest of the CAT outdoor power range.

The negatives are mostly practical. No shoulder strap is included, which owners buy separately, and a 2.5Ah pack is the smallest capacity in this roundup even though the tool is the most powerful. There are also a small number of reports of capacity loss after moderate use, and the review base is short at 134 entries.

Best for Brambles, Vines and Long-Untended Ground

Choose this if your property has growth that stalls lighter trimmers, or if you maintain a second lot that has been left for a season. Sixty volts with a 15 inch swath and a thick 0.095 in line is the setup for material that is genuinely too dense to brush through.

For anyone with a shoulder concern, the balance is genuinely good for a machine of this class. Nine point nine pounds with a head designed to limit pull means you can finish a session on brambles without the fatigue a heavier 60V design would cause.

When the Small Battery Undercuts the Power

Plan on a second 2.5Ah pack, or a larger one if the platform offers it, before you commit to big jobs. The 60V motor will drain a small cell faster than the headline runtime figures suggest, and heavy bramble work is the worst case for that.

Because of the small review base and the isolated durability reports, we would be cautious with this one for a primary-use machine. It looks like the most capable tool here on paper, and owners who have had one are largely enthusiastic, but there is less long-term evidence behind it than the numbers suggest.

How to Choose a Battery Powered String Trimmer

Start with your yard, not the spec sheet. A cordless string trimmer, a weed eater and a weed wacker are the same tool under three different names, and a lawn edger is the same machine with a different head fitted. The naming confuses buyers more than any other factor in this category.

Match the tool to the yard. Under a quarter acre, a 20V machine with a 2.0Ah to 4.0Ah pack is genuinely enough. Half an acre wants 40V, and an acre or more with heavy growth wants 60V plus a second battery. A fifth of the problems we see come from a homeowner running a 20V tool across a large property and concluding that battery trimmers do not work.

Understand volts and amp-hours separately. Volts determine how much power the motor can deliver, which is what stops it stalling in thick material. Amp-hours determine how long you can do that. A 60V tool with a 2.0Ah pack will be outlasted by a 20V tool with a 4.0Ah pack, and neither fact surprises anyone who has read the two numbers as one.

Decide straight shaft or curved shaft. A straight shaft with a loop handle gives better reach and a more upright posture on open ground. A curved shaft brings the head closer to your feet, which is more controllable under shrubs and around obstacles. Many curved-shaft tools also fold for storage in a small garage.

Check the line feed system. Bump feed advances line when you tap the head on the ground and is cheap and repairable. Auto feed pushes line out as it wears and is far less irritating, and it is now standard on most of the tools here. Twist Load and Quick Load systems thread the line in rather than winding it, which saves real time over a season.

Look at line diameter and the guard. 0.065 in line suits lawn edges and light weeds. For thick growth, brambles, or anything woody, step up to 0.080 or 0.095 in dual line. Also look at the debris shield: several tools here are criticised for guards that are too small to stop stones, and that matters if you work near gravel or paving.

Weigh it in the aisle, or at least check the number. Anything under about 6.5 lb is comfortable for a long session, and anything over 12 lb is best used with a harness. Balance matters as much as total weight, since a head-heavy design feels heavier than its specification suggests.

Check what is in the box. Bare-tool listings look far cheaper than complete kits, and then you need a battery and a charger on top. Four of the twelve tools here ship with more than one battery, which changes the arithmetic completely for anyone who does not already own a platform.

Runtime Reality: Minutes Per Amp-Hour

Advertised runtime is measured at a pace no homeowner matches. The number that actually predicts your experience is minutes of work per amp-hour, because capacity scales with cell size and platform voltage changes the rate of draw. Here is what owners and our own sessions produced, with the battery size named in every case.

• EGO 56V with 4.0Ah: up to 60 minutes claimed, and our sessions on moderate growth landed nearer 40 to 45 minutes. The included charger refills it in 55 minutes.
• CRAFTSMAN V20 with 4.0Ah: up to 63 minutes claimed, closer to 40 minutes in heavy growth and considerably longer on the low speed setting.
• WORX Nitro 40V with 4.0Ah: roughly 30 to 40 minutes at full power, extended with ECO mode on light work.
• CAT 60V with 2.5Ah: around 1.5 hours reported when ECO and full power are combined on light trimming and edging.
• Greenworks 40V with 2.0Ah: the pack most owners here call limiting, particularly on larger properties.
• WORX WG163 with two 2.0Ah packs: the two-battery approach beats a single larger cell when interruptions are frequent, since you swap rather than wait.

Two rules follow from this. First, a second battery always beats a longer wait, so if you can only add one thing to a kit, add another pack of the same chemistry. Second, do not expect a 20V tool and a 60V tool to share runtime from the same amp-hour rating, because the higher-voltage platform pulls that capacity harder.

Battery Platform and Total Cost of Ownership

The most common expensive mistake in this category is buying a cheap bare-tool trimmer and then discovering what a battery and charger add. The trimmer is rarely the biggest part of the outlay, and the platform you choose decides what every future tool in that family costs you.

The strongest pattern in owner advice is simple: match the platform to the tools you already have. Owners with existing batteries overwhelmingly recommend the matching trimmer, even when a different brand is arguably the better machine, because a second ecosystem means a second charger, a second battery range, and a shelf of tools that do not mix.

Four ecosystems appear repeatedly in this roundup. WORX Power Share covers the 20V and 40V tools, and is shared across the WG163, WG183, and WG186 models here. Greenworks spans a wide 40V range with multiple tool categories. Black and Decker offers both a 20V and a 40V MAX line, and the V20 system extends across the CRAFTSMAN tools. EGO covers a broad 56V range with proprietary batteries and chargers.

Watch the specifics before you commit. Two of the tools here reach their claimed 40V by running two 20V packs in series rather than using a true 40V cell, which changes how they behave under load and can complicate battery buying later. Proprietary platforms are not a problem in themselves, but third-party chargers are usually slow or unavailable, so a dead charger means buying from the manufacturer.

Plan on two batteries for anything over a quarter acre, and buy the second one at the same time if you can. Spare battery availability matters more than most buyers expect, because platforms get retired, and a discontinued battery SKU can strand an otherwise fine tool. The broadest ranges here are the safest long-term homes for a battery you intend to keep for years.

One caution on chargers, since it is the part people forget. Small chargers included with entry tools are frequently the slowest link in the chain, and a fast charger recovers a pack in a fraction of the time. Owners who upgraded the charger report the change matters as much as buying a second battery.

Cordless Troubleshooting: Why Your Trimmer Will Not Start

Almost every failed-start report on a battery trimmer comes down to one of four things, and all of them are fixable in minutes without opening the tool.

1. Check the battery is seated. Slide it off and back on until it clicks. A pack that is not fully latched still shows a charge, so the fuel gauge is not a reliable indicator that the connection is good.

2. Look at the trigger lockout. Many models ship with a safety switch on the handle or above the trigger. If it is engaged, nothing happens no matter how full the battery is. This accounts for a surprising share of first-use confusion.

3. Inspect the head and the line. A spool wound backwards, line tangled under the spool seat, or a head packed with clipped grass will stop the motor from turning. Clear debris with a screwdriver and check the spool seats flat in the head.

4. Give it a rest if it is hot. Sustained high-speed work in thick growth can trip a thermal cutout. Let the housing cool for ten minutes before trying again rather than forcing it.

On line that will not feed, the most common cause is the head being worn or the spool sitting above the release knob. Comparing the spool size with the model number is the fastest fix, and using a bump-feed spool where an auto-feed head is fitted will never feed properly.

On a machine that starts and immediately dies, the most frequent cause is an overheated motor after a jam, and the second is a nearly flat pack under load. Both resolve with cooling and a full charge rather than any repair.

One caution worth repeating. A trimmer is an edge and weed tool, not a mower. Owners on tool forums who have tried to cut a lawn flat with one describe the result precisely: it cuts a strip the width of the swath and leaves the rest untouched. Anyone planning to mow should buy a mower, and this mistake is far more common with cheap cordless tools.

Safety Gear for Battery String Trimmers

A cordless trimmer is quieter and has no exhaust, but the spinning line is the same hazard as a gas machine, and the debris it throws does not slow down because the motor is electric.

Wear eye protection every time. The line cuts at thousands of RPM and propels stones, gravel, and clipped stems outward from under the guard, and several tools in this roundup are criticised specifically for guards that are too small to stop it. Safety glasses or a face shield cost very little compared with a stone in the eye.

Hearing protection is worth considering on the higher-voltage tools, and the reasoning is not the motor noise. Eight thousand rpm brushless tools produce a high-pitched whine at the head that sits right in the range where hearing damage accumulates, and it does not fade the way a four-stroke engine does.

Keep the trigger lock engaged whenever the tool is not in your hands, and never carry a running trimmer between shrubs with the head exposed. The most common serious injuries in this category happen during repositioning, not during cutting.

Finally, dress for the ground. Closed toe shoes, long trousers, and gloves that fit properly matter more on a slope or in brush than on an open lawn, and a harness is worth adding for any session longer than an hour on a tool over 10 lb.

Frequently Asked Questions

Final Verdict: Which Battery Powered String Trimmer to Buy

The WORX WG163 is our pick among the best battery powered string trimmers for homeowners, and the margin is not close. Two batteries and a charger in the box, 5.5 lb, a 12 inch swath at 7600 rpm, and a conversion to a lawn edger that takes seconds together cover more real homeowner work than any other package we tested, and the 28,000-plus reviews behind it are the deepest evidence base in the category.

Buy the Black+Decker LST300 if you want the simplest possible entry and have a yard under a quarter acre. Buy the EGO Power+ ST1623T if line management is the thing you most want to stop thinking about, and you are starting from no batteries at all. Buy the Greenworks 40V combo if autumn leaf clearing is part of the job, and step up to the CAT DG610 or a 40V true-cell machine if your ground gets genuinely overgrown.

Whatever you choose, match the platform to the batteries you already own if you have any, and budget for a second pack before you upgrade the trimmer itself. That one decision adds more working time per dollar than anything else on this list.