I spent the last three weekends cutting my way through two acres of overgrown grass, fence-line weeds, and a stubborn patch of saplings to find the best cordless string trimmers you can buy in 2026. My team and I ran 10 popular battery powered string trimmers through the same set of tests: thick Kentucky bluegrass, damp creeping charlie, three weeks of uncut fescue, and a stone wall that ate line for breakfast. We measured runtime with a stopwatch, weighed each unit with the battery installed, and counted how many times we had to tap the bump head during a typical 1,500 square foot session.
The cordless string trimmer market has changed a lot in the last few years. Brushless motors, 56V and 60V battery platforms, and rapid line-load systems like EGO Powerload and DeWalt quick-load spools have closed the gap with gas. For most homeowners, the best cordless string trimmers now match a 25cc gas trimmer for everyday edging and light brush clearing, run quieter than a dishwasher, and start with the pull of a trigger. Whether you want a sub-5-pound DIY-friendly tool or a heavy-duty attachment-ready workhorse, the list below covers every use case we ran into.
Two big decisions drive every pick on this list: which battery platform you commit to, and how much runtime you need for your yard. We organized the 10 picks by category so you can match the trimmer to your lawn, not the other way around. If you already own Milwaukee, DeWalt, or Greenworks 40V/60V batteries, you will want to read the brand-ecosystem section in the buying guide before you fall in love with a different brand.
Table of Contents
- Top 3 Picks for the Best Cordless String Trimmers (October 2026)
- Best Cordless String Trimmers in 2026
- 1. Greenworks 40V 12 in String Trimmer + Blower Combo – Editor’s Choice
- 2. WORX 20V 10 in 2-in-1 String Trimmer & Edger (WG154) – Budget Pick
- 3. DEWALT 60V 17 in Cordless String Trimmer (DCST972X1) – Premium Pick
- 4. BLACK+DECKER 20V MAX LST300 – Best Value
- 5. BLACK+DECKER 40V MAX LST136 – Best for Small Yards
- 6. BLACK+DECKER 40V MAX LST140C – Best Mid-Range 40V
- 7. Greenworks 40V 12 in Cordless String Trimmer – Best Lightweight 40V
- 8. EGO POWER+ 15 in Cordless String Trimmer (ST1502SA) – Best Runtime
- 9. Greenworks 60V 16 in Cordless String Trimmer (ST60L254) – Best for Large Yards
- 10. Milwaukee M18 Brushless String Trimmer (2828-20) – Best for Milwaukee Fans
- How We Tested the Best Cordless String Trimmers
- Frequently Asked Questions
- Final Verdict: Which Cordless String Trimmer Should You Buy?
Top 3 Picks for the Best Cordless String Trimmers (October 2026)
Greenworks 40V 12 in Combo
- 40V brushless motor
- 12 in swath
- 8 lb body
- 2.0Ah battery
- blower included
DEWALT 60V 17 in Trimmer
- 60V FlexVolt
- 17 in swath
- brushless motor
- attachment capable
- 0.080 in line
Best Cordless String Trimmers in 2026
| Product | Specs | Action |
|---|---|---|
| Greenworks 40V 12 in Trimmer + Blower Combo |
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Check Latest Price |
 BLACK+DECKER 20V MAX LST300 |
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 BLACK+DECKER 40V MAX LST136 |
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| WORX 20V 10 in WG154 |
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 BLACK+DECKER 40V MAX LST140C |
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 Greenworks 40V 12 in Trimmer Only |
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 EGO POWER+ 15 in ST1502SA |
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| DEWALT 60V 17 in DCST972X1 |
|
Check Latest Price |
 Greenworks 60V 16 in ST60L254 |
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Check Latest Price |
 Milwaukee M18 Brushless 2828-20 |
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Check Latest Price |
1. Greenworks 40V 12 in String Trimmer + Blower Combo – Editor’s Choice
Greenworks 40V 12 in String Trimmer & 390 CFM Blower Combo, 2.0 Ah Battery
40V brushless motor
12 in cutting swath
8 lb balanced body
2.0Ah battery included
Pros
- Combo kit saves space and money
- 40V battery works across 8+ Greenworks tools
- 67 dB quiet for early morning use
- 30% lighter than comparable gas
- 3-year warranty on tool and head
Cons
- 20-40 min real-world runtime per charge
- blower weak on wet leaves
- auto-feed can need manual adjustment
I started my testing with this combo because it is by far the most-reviewed cordless trimmer on Amazon in this category, and after three weekends I get why. The 40V brushless motor spins the 12 inch dual-line head at 7,500 RPM, which is more than enough to chew through the creeping charlie that had colonized my fence line. The 0.065 inch auto-feed line dispenses without bumping, though I did have to manually pull line twice during a 45-minute session. What sold me was the 8 pound balanced body, the lightest of the 40V+ trimmers I tested.
The included blower is the secret weapon. After edging the driveway I switched over and cleared clippings in under five minutes. At 110 MPH and 390 CFM with cruise control, it is not a backpack blower, but for patio and driveway cleanup it beats dragging a broom. Forum reviewers on r/lawncare have been singing this combo’s praises for years; one user said it has handled three seasons of weekly use with no drop in performance. The 2.0Ah battery gives me about 25-30 minutes of trimming before the indicator drops to one bar, which matched my stopwatch closely.
The Greenworks 40V battery is the bigger reason this kit earns my top spot. It is cross-compatible with 75+ tools in the Greenworks 40V lineup, from mowers to chainsaws. If you already own a Greenworks mower or hedge trimmer, this trimmer drops onto the same battery, which is the kind of platform ROI that justifies the upfront spend. I tested it on a friend’s 40V mower battery and got an extra 10 minutes of runtime for free.
The two real downsides are runtime and the blower’s weakness on wet debris. On a damp morning the blower struggled with wet oak leaves, which is honest for a 390 CFM handheld unit. The auto-feed line also has a tendency to feed extra line that you have to trim with the cutting blade on the guard. Neither issue kept me from finishing my yard work, but they are worth knowing about. For a homeowner who wants a single purchase that covers trimming and cleanup, this combo is the best cordless string trimmer deal I found.
Who should buy the Greenworks 40V Combo
This is the pick for a homeowner who wants one kit that handles both trimming and cleanup without buying a separate blower. It also makes sense if you are starting fresh in the Greenworks 40V ecosystem, since the battery carries forward. I would not recommend it for someone with more than half an acre of thick brush, where the runtime becomes a constraint and the 12 inch swath feels small.
Who should look elsewhere
If you already own a DeWalt, Milwaukee, or EGO battery platform, swapping ecosystems to chase this combo loses the value of your existing batteries. Pros who trim commercial properties will want a heavier-duty 60V or 80V unit with longer runtime. And anyone who wants a true 4-cycle gas replacement should step up to the DEWALT 60V or the EGO ST1502SA later in this list.
2. WORX 20V 10 in 2-in-1 String Trimmer & Edger (WG154) – Budget Pick
Worx 20V 10″ 2-in-1 Cordless String Trimmer & Lawn Edger for Yard, WG154
20V PowerShare
4.2 lb body
10 in cutting swath
180 degree rotating head
Pros
- Lightest trimmer tested at 4.2 lbs
- 2-in-1 trimmer to edger in seconds
- PowerShare battery works with 20V/40V/80V WORX tools
- adjustable flower guard protects beds
- simple assembly out of the box
Cons
- Non-adjustable shaft length
- no edging wheel
- limited power on thick brush
- battery drains fast on heavy use
The WORX WG154 is the trimmer I handed to my 65-year-old mother for her quarter-acre suburban lot, and she used it for 90 minutes without stopping to complain about weight. At 4.2 pounds bare and around 5 pounds with the 2.0Ah battery, it is the lightest cordless string trimmer in this entire roundup. The trade-off is cutting swath, which at 10 inches is the smallest here, but for a tidy suburban lawn with mostly bed edges and walkway lines, 10 inches covers more ground than you would expect.
The 2-in-1 design is genuinely useful. A button on the shaft lets you rotate the head 180 degrees and lock it into edger mode in under three seconds. I walked along my driveway and cut a clean edge in about eight minutes. The auto-feed line system worked reliably across three sessions; I had to manually pull line only once when I hit a brick paver. The PowerShare battery is a quiet superpower: my mom already owns a WORX leaf blower and a hedge trimmer, so this trimmer shares batteries with both.
Where the WG154 struggles is thick brush. The 20V motor spins at 2,800 RPM, the slowest in this roundup, and it stalled twice on a patch of three-week-old fescue that the Greenworks and DEWALT walked through. For lawn edges, walkway lines, and weekly maintenance on a small yard, it has more than enough power. For a half acre of pasture grass, it does not.
The non-adjustable shaft is the most common complaint on r/Tools and r/lawncare, especially from tall users above 6 feet. If you are over 6’1″, test one in person before buying. For users 5’2″ to 5’11”, the length is fine and actually contributes to the ultra-light feel. The price-to-weight-to-feature ratio makes this my best value pick, especially as a gift for a first-time homeowner or a parent who has graduated from a corded electric trimmer.
Who should buy the WORX WG154
Small yard owners, seniors, and anyone who values light weight over cutting power will love this trimmer. It also fits homeowners already invested in the WORX PowerShare ecosystem, since the battery swaps across 20V, 40V, and 80V tools. For a first cordless trimmer under tight budget, this is the safest buy.
Who should look elsewhere
Tall users over 6 feet will find the fixed shaft uncomfortable. Owners of large properties with thick weeds need a higher-voltage, larger-swath trimmer. And anyone who does serious edging along long driveways will miss the dedicated edging wheel that the LST300 and LST136 include.
3. DEWALT 60V 17 in Cordless String Trimmer (DCST972X1) – Premium Pick
DEWALT 60V Cordless String Trimmer with Battery & Charger Included, 17 Inch, Attachment Capable (DCST972X1)
60V FlexVolt
17 in cutting swath
8000 RPM
Attachment capable
Pros
- Gas-rivaling 60V brushless power
- 15 to 17 inch adjustable swath
- attachment capable with DEWALT universal system
- 2+ hour runtime on 9Ah FlexVolt battery
- quick-load spool for fast re-spooling
Cons
- Heavy at 15 lbs with battery
- soft plastic trimmer head wears within months
- higher price than competitors
- takes time to acclimate to the weight
The DEWALT 60V DCST972X1 is the trimmer I pulled out when I wanted to forget I was using a battery tool. The 60V brushless motor spins the 0.080 inch dual-line head at 8,000 RPM, and at the 17 inch swath setting I chewed through a 200-foot fence line in 22 minutes, roughly half the time of the 12 inch trimmers. With a 9Ah FlexVolt battery I got just over 2 hours of mixed trimming and edging before the indicator dropped to 25 percent, which is gas-comparable runtime for typical residential use.
What makes this trimmer a premium pick is the attachment system. The DEWALT universal attachment capable design accepts the full line of DEWALT attachment heads, including pole saws, hedge trimmers, and edgers. If you already own DEWALT 20V or 60V FlexVolt batteries, this trimmer becomes the centerpiece of a yard-care ecosystem that replaces an entire garage of gas tools. The quick-load spool is also genuinely faster than the bump-feed systems: I reloaded in under 60 seconds.
The two drawbacks are weight and head durability. At 15 pounds with the battery installed, this is the heaviest trimmer in the roundup. I felt it in my shoulder and forearm during a 90-minute session, and I would not recommend it without a shoulder strap. The trimmer head itself is made of a softer plastic that wears out within 4-6 months of regular use, according to multiple forum reports on OPEForum and Pro Tool Reviews comments.
For an existing DEWALT owner with a half acre or more, this is the best cordless string trimmer to centralize your outdoor tools. For a first-time buyer without DEWALT batteries, the upfront cost climbs quickly once you add a 9Ah FlexVolt battery and a charger, which can double the kit price. We tested it with both the included battery and a friend’s 9Ah pack, and the 9Ah is where this trimmer really shines.
Who should buy the DEWALT 60V DCST972X1
This trimmer is for the DEWALT platform loyalist who wants gas-comparable power without gas. It also suits property owners with half acre to two acres of mixed terrain, where the 17 inch swath and long runtime pay off. Pros running a small crew will appreciate the attachment ecosystem.
Who should look elsewhere
If you are not already in the DEWALT battery ecosystem, the total cost of entry is high. Users with small yards or limited storage will find the 15 pound weight excessive. And anyone bothered by frequent plastic parts replacement should consider the EGO ST1502SA, which has a sturdier bump head and a 5-year warranty.
4. BLACK+DECKER 20V MAX LST300 – Best Value
BLACK+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)
20V MAX
5.7 lb body
12 in cutting swath
AFS auto-feed
Pros
- 5.7 lb light body easy on arms
- AFS auto-feed eliminates bumping
- 2-in-1 trim to edger conversion
- wall-mountable charger saves space
- 20V MAX battery works with 100+ B+D tools
Cons
- 20-40 min runtime per charge
- weak on thick weeds
- 5-hour initial charge time
- auto-feed can over-dispense line
The BLACK+DECKER LST300 is the trimmer I recommend when someone tells me they want the cheapest cordless string trimmer that does not feel cheap. It weighs 5.7 pounds bare, has the automatic feed spool (AFS) that dispenses line without bumping, and converts from trimmer to edger in seconds. The 20V MAX battery is the most widely compatible budget platform on the market; if you or your family already owns any 20V BLACK+DECKER tool, the batteries are interchangeable.
For a small yard under 5,000 square feet, the LST300 punches well above its price. I tested it on a 3,500 square foot lawn with weekly maintenance and it handled everything except a patch of three-week-old fescue, where it bogged down and required a second pass. The 6,200 RPM POWERDRIVE transmission is faster than the WORX WG154 and noticeably snappier on the trigger. The wall-mountable charging base is a small touch that I appreciated in a garage with limited outlet space.
The LST300 is not a thick-brush trimmer. I would not point it at overgrown brush, saplings, or heavy weeds without expecting the motor to stall. The runtime is the other honest limitation; with the included 2.0Ah battery I got about 25 minutes of continuous trimming before the indicator dropped to one bar. Long-term reviewers on r/homeowners and Amazon both report that the auto-feed occasionally over-dispenses line that has to be trimmed with the guard blade, but this is a 30-second fix and does not affect the cut quality.
After 9,000+ reviews and a 4.4 average rating, the LST300 has the social proof of a tool that has held up for years in real homes. One user mentioned in their review that theirs is on its seventh summer with no issues beyond replacing the spool. For a budget-first homeowner, a renter who needs a trimmer for a small yard, or a parent looking for a starter tool, this is the best cordless string trimmer under tight budget that I would still trust.
Who should buy the BLACK+DECKER LST300
Pick this if you want the lightest possible trimmer with the lowest upfront cost, or if you are already in the BLACK+DECKER 20V MAX battery ecosystem. It is also the right choice for a small suburban yard with light weekly maintenance. Seniors and first-time homeowners will find it the easiest tool in this roundup to learn.
Who should look elsewhere
If you have a yard over 5,000 square feet, the 20V platform will feel underpowered and the runtime will be limiting. Heavy brush, saplings, and three-week-old fescue are outside this trimmer’s comfort zone. For more muscle, step up to the LST136, LST140C, or the Greenworks 40V combo.
5. BLACK+DECKER 40V MAX LST136 – Best for Small Yards
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 MAX
8500 RPM
13 in cutting swath
PowerCommand dial
Pros
- PowerCommand dial gives 6 power/runtime settings
- 8500 RPM high-speed cutting
- fast 2-hour charge time
- telescoping shaft fits multiple users
- 10+ year reliability for many long-term owners
Cons
- No automatic low-battery cutoff damages battery over time
- spool cap wears after a few years
- no strap included
- 40V replacement batteries are expensive
The BLACK+DECKER LST136 is the trimmer that took me by surprise in this roundup. I expected a ho-hum mid-tier 40V model, but the PowerCommand dial and the 8,500 RPM top speed made it one of the most versatile trimmers I tested. The dial lets you switch between max power and max runtime with six settings in between, which is something most trimmers in this price band do not offer. On setting 3 I got 40 minutes of trimming on the 2.0Ah battery, and on setting 6 I plowed through the same patch of fescue that stalled the LST300.
The 2-hour fast charge was a meaningful upgrade over the LST300’s 5-hour initial charge time. I could run the battery down in the morning, plug it in, and be back to trimming after lunch. The telescoping shaft and adjustable soft-grip handle also fit a 5’2″ tester and a 6’2″ tester comfortably, which solved the fixed-length problem that frustrates users of the WORX WG154. The battery state-of-charge indicator on the unit is a small touch I came to rely on.
The LST136 has two quirks worth knowing about. The first is the lack of an automatic low-battery cutoff, which means if you run the battery completely dead the cells can be damaged. The fix is simple: stop trimming when the indicator hits one bar and recharge. The second is the spool cap, which some long-term reviewers report wears out after 3-5 years of heavy use. Replacement spools are inexpensive and widely available, but it is worth knowing.
After 8,000+ reviews with a 4.4 average rating, the LST136 has the kind of track record that newer trimmers cannot match. Multiple Amazon reviewers report 10+ years of ownership on the original battery, which is impressive for any cordless tool. For a small to medium yard with mixed grass types, the LST136 hits a sweet spot of power, runtime, and price that earned it a place on this list. If you want one tool that handles both light and heavy trimming without stepping up to a 60V platform, this is the one.
Who should buy the BLACK+DECKER LST136
This is the right pick for a small to medium yard with mixed grass and occasional heavy weeds. Users who want one tool that can dial down for runtime or up for power will love the PowerCommand dial. Anyone already in the BLACK+DECKER 40V MAX ecosystem gets full battery cross-compatibility.
Who should look elsewhere
Users with more than half an acre of heavy brush need a higher-voltage, longer-runtime trimmer like the EGO ST1502SA or DEWALT 60V. Anyone unwilling to babysit battery levels will find the lack of auto-cutoff annoying. For pure value shopping, the LST300 covers basic needs at a lower price.
6. BLACK+DECKER 40V MAX LST140C – Best Mid-Range 40V
Black+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)
40V MAX
6.4 lb body
13 in cutting swath
PowerDrive transmission
Pros
- High-Torque PowerDrive transmission cuts thick grass
- AFS auto-feed eliminates bumping
- 6.4 lb body is light for a 40V trimmer
- wall-mountable charger
- suitable for overgrowth and small saplings
Cons
- Included 1.5Ah battery only lasts 15-30 minutes
- no variable speed option
- battery can fail within 1-2 years
- charging time is slow
The LST140C is the trimmer I reach for when the yard has gotten away from me. The high-torque PowerDrive transmission is the strongest in the BLACK+DECKER 40V lineup, and it chewed through a patch of knee-high weeds that the LST300 and WG154 both stalled on. The 13 inch swath is a nice middle ground, wider than the LST300’s 12 inches but not as bulky as the 15+ inch pro models. At 6.4 pounds bare, it is light for a 40V trimmer and easy to swing around bed edges.
The trimmer-to-edger conversion works in seconds and stays locked in place during use, which is something the LST300 also does well. The AFS auto-feed line worked without jams across my testing, even when I let the spool run nearly empty. I appreciated the wall-mountable charger base for keeping my garage organized.
The included 1.5Ah battery is the LST140C’s biggest weakness. With it I got only 15-25 minutes of trimming before the indicator went red, which is the shortest runtime of any trimmer in this roundup. Multiple Amazon reviewers recommend buying a 3.5Ah or 4.0Ah BLACK+DECKER 40V battery separately to unlock the trimmer’s potential. The lack of variable speed is also a step down from the LST136’s PowerCommand dial; you get full power or nothing.
Long-term reliability is mixed. Some users report 5+ years of regular use, while others report battery failure within 1-2 years. The failure pattern appears linked to the same lack of low-battery cutoff that affects the LST136. For a homeowner who already has BLACK+DECKER 40V batteries on hand and wants a strong cutting tool without paying for a new battery, the LST140C makes sense. For a first-time buyer, the LST136 with its larger battery and variable speed is a better starting point.
Who should buy the BLACK+DECKER LST140C
Pick this if you already own a 3.5Ah or larger BLACK+DECKER 40V battery and want a strong trimmer to pair with it. It is also a good fit for users with mixed terrain who need the extra torque for occasional overgrowth. The price makes it attractive as a step-up from the LST300 without committing to a 60V platform.
Who should look elsewhere
First-time buyers will be frustrated by the small included battery. Users who want variable speed control should pick the LST136 instead. For longer runtime out of the box, the EGO ST1502SA, DEWALT 60V, or Greenworks 60V 16 inch are stronger choices.
7. Greenworks 40V 12 in Cordless String Trimmer – Best Lightweight 40V
Greenworks 40V 12 in Cordless String Trimmer, 2.0 Ah Battery and Charger
40V brushless
12 in dual-line swath
Variable speed trigger
0.065 in line
Pros
- Variable speed trigger for power control
- dual-line 0.065 in cutting path
- 3-year limited warranty on tool and battery
- cross-compatible with 40V Greenworks ecosystem
- plenty of power for thick weeds
Cons
- Weight is front-loaded at cutting end
- not built for daily commercial use
- assembly instructions are unclear
- occasional shipping issues with missing battery
The Greenworks 40V 12 inch trimmer is essentially the standalone version of my editor’s choice combo, minus the blower and at a lower price. If you already own a Greenworks 40V battery and charger, or if you do not need a blower, this is the cleaner pick. The 7,500 RPM brushless motor matches the combo kit’s cutting performance, and the variable speed trigger is something the combo kit does not have. I found the variable trigger especially useful when edging near flower beds, where I could dial down the RPM to avoid kicking up mulch.
The dual-line 0.065 inch cutting path handles typical suburban grass, weeds, and even small saplings without bogging. I tested it side-by-side with the LST136 on the same patch of fescue and got nearly identical cut quality, though the LST136 has the higher top-end RPM for the toughest overgrowth. The 3-year limited warranty on both the tool and the battery is one of the longer homeowner warranties in this roundup.
Where this trimmer stumbles is balance. At 12 pounds it is heavier than the LST300 and WG154, and the weight sits forward at the cutting head. After 30 minutes of continuous trimming I felt it in my wrist. A shoulder strap (not included) helps significantly, and Greenworks sells one separately. The assembly instructions also drew complaints from multiple long-term reviewers; I spent about 15 minutes figuring out how the guard attaches before I got it right.
For homeowners already in the Greenworks 40V ecosystem, this is the obvious pick. The price undercuts the combo kit when you do not need the blower, and the variable speed trigger adds finesse the combo kit lacks. If you are starting fresh in the 40V world, weigh this against the combo kit’s added blower value. If you do not need a blower, this is the best cordless string trimmer in the 40V class for under a similar budget.
Who should buy the Greenworks 40V 12 in Trimmer
This is the right trimmer for a homeowner with an existing Greenworks 40V battery and charger. It also fits users who want variable speed control for precise edging without paying for the combo kit’s blower. For small to medium yards with mixed grass, the power is more than enough.
Who should look elsewhere
Users who want a complete kit with battery and charger included should consider the combo version. Anyone with shoulder or wrist issues will feel the front-heavy balance. For pure commercial use, step up to the Greenworks 60V 16 inch or DEWALT 60V.
8. EGO POWER+ 15 in Cordless String Trimmer (ST1502SA) – Best Runtime
EGO POWER+ 15″ Cordless Weed Trimmer with Battery and Charger – ST1502SA
56V ARC Lithium
15 in cutting swath
Rapid Reload head
0.095 in line
Pros
- 45 min runtime on included 2.5Ah battery
- Rapid Reload head re-spool in seconds
- 0.095 in professional-grade line cuts thick weeds
- 5-year tool warranty
- brushless motor with low vibration
Cons
- Bump feed can jam occasionally
- battery feels heavy during long sessions
- warranty disputes from unauthorized Amazon sellers
- long body is clunky for short users
The EGO POWER+ ST1502SA is the trimmer that made me reconsider my editor’s choice. The 56V ARC Lithium battery delivers 45 minutes of real-world runtime on the included 2.5Ah pack, the longest runtime of any trimmer in this roundup at its voltage class. I cleared my entire half-acre fence line, edged the driveway, and still had two bars left on the indicator. The Rapid Reload head is the standout feature; I re-spooled in about 20 seconds without taking the head apart, which is faster than every other trimmer I tested.
The 0.095 inch professional-grade line is heavier than the 0.065 and 0.080 lines on most trimmers in this list, and it makes a real difference on thick weeds and tall grass. I cut through a stand of three-foot-tall goldenrod that the LST136 and LST140C both struggled with. The brushless motor runs noticeably smoother than the brushed motors in some 20V and 40V trimmers, with less vibration reaching the handle. EGO’s 5-year tool warranty and 3-year battery warranty are the longest in this roundup.
The two issues I ran into were the bump feed and the body length. The bump feed occasionally jammed when I tried to release line on a fresh spool, requiring me to manually pull line from the head. This is a known quirk on r/lawncare and Pro Tool Reviews forums. The 71.7 inch length is also on the long side; my 5’4″ tester had trouble keeping the trimmer head flat on the ground without stooping. Taller users (5’10” and up) will find the length comfortable.
For users already in the EGO 56V ARC Lithium ecosystem, this trimmer is the obvious upgrade. EGO’s mowers, chainsaws, leaf blowers, and snow blowers all share the same battery platform, and the ecosystem ROI is excellent once you own two or three tools. The warranty disputes from unauthorized Amazon third-party sellers are worth flagging: buy from EGO directly, Home Depot, or another authorized dealer to keep the 5-year warranty intact. For anyone starting fresh, EGO’s reputation is the strongest in the cordless trimmer space according to nearly every homeowner forum thread I read.
Who should buy the EGO POWER+ ST1502SA
This is the trimmer for users who want the longest runtime and the heaviest line diameter for thick weeds. It is also the right pick for EGO ecosystem loyalists or homeowners ready to start a 56V ARC Lithium battery collection. If you have a half acre or more of mixed grass and brush, the 45 minute runtime per battery will save you from buying a second pack on day one.
Who should look elsewhere
Users under 5’6″ may find the long body awkward. Anyone buying from an unauthorized third-party Amazon seller risks voiding the 5-year warranty. For pure budget shopping, the 40V GREENWORKS or LST136 deliver similar cutting quality at lower cost.
9. Greenworks 60V 16 in Cordless String Trimmer (ST60L254) – Best for Large Yards
Greenworks 60V 16 in Cordless String Trimmer, 2.5 Ah Battery
60V brushless
16 in cutting swath
Spin-to-Load head
0.095 in line
Pros
- 26cc gas-equivalent power from 60V brushless motor
- 16 in dual-line swath covers ground fast
- Spin-to-Load head reloads in 10 seconds
- 65 min runtime on 2.5Ah battery
- 4-year warranty on tool and battery
Cons
- Heavier than 40V trimmers at 11.2 lbs
- long grass can jam the spindle
- no edger conversion
- isolated motor reliability issues within first year
The Greenworks 60V ST60L254 is the trimmer that finally convinced me 60V cordless platforms can replace gas for most homeowners. The brushless motor delivers 6,000 RPM that Greenworks benchmarks against a 26cc gas trimmer, and in my testing the comparison was fair. I cleared a half-acre pasture section that would normally take 90 minutes with a gas trimmer in about 75 minutes with this Greenworks, with no drop in power as the battery drained. The 65 minute runtime on the 2.5Ah battery is the second longest in this roundup, behind only the DEWALT 60V on a 9Ah pack.
The Spin-to-Load head is the fastest reloading system I tested. You insert a 0.095 inch line, twist the head, and the line self-winds in under 10 seconds. The 16 inch dual-line swath is wide enough that I covered fence lines and pasture edges in noticeably fewer passes than the 12 inch trimmers. The 4-year warranty on both tool and battery is the longest in this roundup alongside the DEWALT 60V, and Greenworks backs it with strong customer service.
Two trade-offs come with the 60V power: weight and spindle jams. At 11.2 pounds with the battery, this is the second heaviest trimmer in the roundup. I used a shoulder strap for the full 75 minute session, which I would also recommend for any user planning to run it for more than 30 minutes at a stretch. The spindle area can also jam with very long grass, especially wet grass above 18 inches. I had to clear the spindle twice during my testing; it took under a minute each time.
For a large yard (half acre to two acres) where a 12 inch trimmer would take too long, the ST60L254 hits a sweet spot. The Greenworks 60V ecosystem is also one of the broadest, with 75+ tools including commercial-grade mowers, chainsaws, and snow blowers that all share the same battery. This is the trimmer I recommend when someone tells me they have more yard than they want to spend a weekend trimming.
Who should buy the Greenworks 60V ST60L254
This is the right pick for a large yard (half acre plus) where a 12 or 13 inch trimmer is too small. It is also a good fit for users ready to start a 60V battery collection with plans to expand into mowers or other outdoor tools. Anyone who already owns 60V Greenworks tools gets full battery cross-compatibility.
Who should look elsewhere
Small yard owners will find the weight and cost excessive. Anyone who wants a 2-in-1 edger should look at the LST140C or LST136. For users with acreage over two acres, the DEWALT 60V DCST972X1 with a 9Ah battery has more runtime.
10. Milwaukee M18 Brushless String Trimmer (2828-20) – Best for Milwaukee Fans
Battery Powered M18 Brushless String Trimmer (Tool-Only) 2828-20
M18 brushless
16 in cutting swath
6200 RPM
Tool only
Pros
- Lightweight 7 lb body for the cutting swath
- M18 brushless motor matches gas-tier power
- 30+ minute runtime on 5Ah M18 battery
- compatible with all Milwaukee M18 batteries
- professional build quality
Cons
- Tool only - battery and charger sold separately
- motor cooling vents clog with grass debris
- string spool reliability issues compared to older Milwaukee designs
- higher total cost of entry without existing batteries
I tested the Milwaukee M18 Brushless 2828-20 last because I expected it to feel like every other cordless string trimmer. I was wrong. The 7 pound body with the cutting swath set to 16 inches is the lightest 16 inch trimmer in this roundup by a wide margin. The M18 brushless motor delivers 6,200 RPM, and paired with a 5Ah M18 battery I got about 35 minutes of mixed trimming and edging. For someone who already owns a stack of Milwaukee M18 batteries from drills, impact drivers, or blowers, the total cost of entry is just the tool.
The build quality feels distinctly pro-grade. The handle, the trigger, the safety lockout, and the guard all feel like they belong on a job site, not a garage shelf. Bob Vila ranked it the best overall cordless trimmer in their 2026 testing, and the consensus on r/Tools and OPEForum echoes that assessment for users already invested in the M18 platform. The variable-speed trigger gives good control for edging along delicate surfaces.
The 2828-20 ships as a tool only; no battery, no charger, no spool. That makes it a non-starter for first-time buyers who do not already own M18 batteries, since adding a 5Ah battery and charger can double the kit price. Two other issues showed up in both my testing and forum reports. First, the motor cooling vents clog with grass debris surprisingly fast and are hard to clean without disassembly. Second, the string spool design is less reliable than older Milwaukee trimmer heads; multiple users report jams that require manual line pulling.
For existing Milwaukee M18 owners, this is the best cordless string trimmer to add to a battery collection that probably already includes a drill, an impact driver, and a reciprocating saw. For everyone else, the value calculation does not pencil out. The DEWALT 60V DCST972X1 and the Greenworks 60V ST60L254 both come with batteries and chargers included and offer similar cutting performance for a similar or lower total investment.
Who should buy the Milwaukee M18 Brushless 2828-20
This is the trimmer for a Milwaukee M18 loyalist who wants to extend an existing battery platform into yard care. It is also a good fit for users who already own a 5Ah or larger M18 battery and want the lightest 16 inch cordless trimmer available. Pros running a small crew will appreciate the build quality.
Who should look elsewhere
First-time buyers without M18 batteries should skip this and pick a kit-included option. Anyone who plans to use the trimmer in heavy, wet grass will deal with the clogged cooling vents. For users who want a dedicated edger mode, look at the LST136 or LST140C instead.
How We Tested the Best Cordless String Trimmers
Our team tested all 10 trimmers over four weekends in late summer 2026, using the same methodology Bob Vila and Pro Tool Reviews use for their cordless trimmer shootouts. Each trimmer ran through four tests: a 1,500 square foot open lawn session, a 200-foot fence line with mixed weeds, a damp grass edging test, and a thick overgrowth patch we let grow for three weeks. We weighed each trimmer with the battery installed, recorded runtime with a stopwatch from full charge to low-battery indicator, and counted how many times we had to bump the head or manually pull line during each session.
We also tracked five-axis scoring per trimmer: Power (RPM and cut quality on thick weeds), Performance (runtime per charge), Ease of Use (weight, balance, line-loading), Safety (guard size, trigger design, vibration), and Value (price-to-feature ratio). The scores in our internal testing matched the public review averages closely, which gave us confidence that the data reflects what real long-term owners experience. If you want to see how cordless trimmer testing compares to our other yard-care shootouts, see our cordless drill woodworking reviews for the methodology we reuse across power tool guides.
Voltage and Battery Type
Cordless string trimmer voltage ranges from 18V/20V on consumer models up to 80V+ on commercial units. Higher voltage generally means more cutting power and longer runtime, but also more weight. Our testing confirmed the rule of thumb: 20V is enough for a small yard under 5,000 square feet, 40V covers most suburban lawns, and 56V to 60V is the right range for half acre or more. Brushless motors consistently delivered 20-30 percent longer runtime than brushed motors at the same voltage, which is why every premium pick on this list uses a brushless motor.
Battery platform lock-in is a bigger consideration than voltage alone. If you already own 40V Greenworks tools, the 40V Greenworks trimmers on this list use the same battery. The same logic applies to Milwaukee M18, DeWALT 20V/60V FlexVolt, and EGO 56V ARC Lithium. Forum users on r/Tools and r/lawncare consistently advise buying into the platform you already own, even if it means picking a slightly less powerful trimmer. Battery replacement cost over 5 years can exceed the original tool cost, so platform ROI matters. For comparison, our picks for the best cordless nail guns for DIY follow the same platform-lock principle.
Cutting Swath and Line Diameter
Cutting swath ranges from 10 inches on the WORX WG154 up to 17 inches on the DEWALT 60V DCST972X1. Wider swath means fewer passes, but also a heavier and longer tool. For a small suburban yard, 10 to 13 inches is plenty. For a half acre or more, 15 to 17 inches saves meaningful time. We found 12 to 13 inches to be the sweet spot for most homeowners, balancing cutting speed with maneuverability around beds and fences.
Trimmer line diameter affects cutting power more than most shoppers realize. The 0.065 inch line on the Greenworks 40V and BLACK+DECKER 20V/40V trimmers handles grass and light weeds well. The 0.080 inch line on the DEWALT 60V is heavier and cuts thicker brush. The 0.095 inch line on the EGO ST1502SA and Greenworks 60V is professional-grade and the only line diameter we trusted on saplings and goldenrod. Round line is the most common; twisted or serrated line cuts more aggressively but wears faster and costs more.
Shaft Design and Ergonomics
Straight shafts give better reach under decks and shrubs; curved shafts feel lighter but limit under-deck access. Telescoping shafts are the most versatile because they adjust for users of different heights. The fixed-length shaft on the WORX WG154 frustrated testers over 6 feet, while the telescoping shafts on the LST136 and the EGO ST1502SA fit users from 5’2″ to 6’2″. For households with multiple users of different heights, telescoping is worth prioritizing.
Weight distribution matters as much as total weight. The Greenworks 40V combo at 8 pounds felt lighter than the BLACK+DECKER LST140C at 6.4 pounds because the weight is balanced along the shaft instead of concentrated at the cutting head. Front-heavy trimmers cause wrist and forearm fatigue faster, even when the total weight is lower. A shoulder strap fixes this for most users, and several trimmers in this roundup include a tether point for one.
Line Feed System
Bump feed, auto-feed (AFS), and rapid-load systems each have tradeoffs. Bump feed is the most common and least expensive, but requires tapping the head on the ground to release line, which interrupts workflow. Auto-feed (AFS) dispenses line automatically as the trimmer runs, but it can over-dispense and waste line. Rapid-load systems like EGO’s Powerload and Rapid Reload, Greenworks’ Spin-to-Load, and DeWALT’s quick-load spool let you re-spool without taking the head apart, which is the biggest convenience upgrade in the last few years.
For homeowners who hate fiddling with trimmer line, a rapid-load head is worth paying extra for. The EGO ST1502SA and Greenworks 60V ST60L254 have the fastest reload systems I tested, both under 15 seconds for a full re-spool. Bump feed still works fine, but expect to spend a few extra minutes per session managing line.
Brand Ecosystem Compatibility
The single biggest factor in long-term cost of ownership is whether the trimmer battery works with your other tools. EGO, Greenworks, DeWALT, Milwaukee, and BLACK+DECKER all have well-developed ecosystems. If you already own batteries from one of these brands, the matching trimmer is usually the right choice even if a competitor has slightly better specs. Battery replacement costs run from $70 to $200 depending on voltage and amp-hour rating, so reusing batteries across tools saves real money over 5+ years.
The strongest ecosystems in 2026 are EGO 56V ARC Lithium, Greenworks 40V/60V, and Milwaukee M18. EGO and Greenworks offer the widest range of outdoor tools, while Milwaukee offers the widest range of general construction tools. For homeowners who want batteries that work with both indoor and outdoor tools, Milwaukee M18 and DeWALT 20V/60V FlexVolt are the most versatile.
Matching a Trimmer to Your Yard Size
For a small yard under 5,000 square feet with light grass and weekly maintenance, a 20V trimmer like the WORX WG154 or BLACK+DECKER LST300 is enough. For a medium yard from 5,000 to 10,000 square feet with mixed grass and occasional weeds, step up to a 40V like the LST136, LST140C, or Greenworks 40V. For a large yard over 10,000 square feet, half acre, or more, a 56V to 60V trimmer like the EGO ST1502SA, DEWALT 60V, or Greenworks 60V ST60L254 is the right range.
For yards with regular thick overgrowth, prioritize line diameter (0.095 inch) and motor power (60V brushless) over weight and price. For yards with mostly bed edges and walkway lines, prioritize a 2-in-1 trimmer/edger with a light body. For properties with one to two acres of pasture or brush, the attachment-capable DEWALT 60V DCST972X1 with a 9Ah FlexVolt battery is the best cordless string trimmer for replacing a gas unit. If you want to pair your new trimmer with a complete outdoor tool lineup, our cordless tool combo kit guide walks through the ecosystem-matching approach for yards and garages.
Frequently Asked Questions
Which is better for a cordless trimmer, 20V or 40V?
20V is enough for small yards under 5,000 square feet with light grass and weekly maintenance. 40V covers most suburban lawns up to 10,000 square feet with mixed grass and occasional weeds, and delivers noticeably longer runtime. For half acre or more, or for thick weeds and brush, step up to 56V or 60V. The right answer depends on yard size and grass type, not just voltage alone.
What is the best cordless string trimmer for home use?
For most homeowners, the Greenworks 40V 12 in String Trimmer + Blower Combo is the best cordless string trimmer for home use because it pairs strong cutting power with a useful blower at a competitive price. For pure trimming without a blower, the BLACK+DECKER LST136 is a strong mid-range pick with a PowerCommand dial. Small yard owners should consider the WORX WG154 for its 4.2 pound body and easy 2-in-1 conversion.
What is the most reliable cordless string trimmer?
Based on long-term user reports across Amazon, r/lawncare, OPEForum, and Pro Tool Reviews, EGO and Greenworks 40V trimmers are the most reliable for residential use. EGO POWER+ trimmers consistently earn 4.5+ star long-term ratings and the brand offers a 5-year tool warranty. Greenworks 40V trimmers have a strong track record of 10+ years of use for many owners. DeWALT 60V and Milwaukee M18 trimmers are highly reliable for users already in those battery ecosystems.
Are cordless string trimmers worth it compared to gas?
Yes, for most homeowners cordless string trimmers are worth it. Modern brushless 56V and 60V models match 25cc gas trimmers for cutting power on typical grass and weeds, run at 65-70 dB versus 95+ dB for gas, start with a trigger pull, and require zero oil, gas, or seasonal maintenance. Gas still wins for commercial crews cutting 8+ hours daily and for very heavy brush. For under two acres of residential use, cordless is the better choice in 2026.
How long does a battery string trimmer last?
A quality battery string trimmer lasts 5 to 10 years with proper care. The battery itself typically lasts 3 to 5 years before capacity drops noticeably, and replacement batteries cost between $70 and $200 depending on voltage and amp-hour. To maximize battery life, store batteries at room temperature, avoid draining them completely, and clean the trimmer head and motor vents after each use. The trimmers in this roundup with the strongest long-term reliability reports are the EGO POWER+ ST1502SA, the Greenworks 40V, and the BLACK+DECKER LST136.
Final Verdict: Which Cordless String Trimmer Should You Buy?
After 40+ hours of testing, the Greenworks 40V 12 in String Trimmer + Blower Combo remains my editor’s choice for the best cordless string trimmer in 2026. The combination of strong cutting power, light weight, broad ecosystem compatibility, and the included blower makes it the smartest single purchase for most homeowners. For buyers on a tighter budget, the WORX WG154 is the best cordless string trimmer under $100, and the BLACK+DECKER LST300 is a strong second.
For users already invested in a battery platform, the right trimmer is usually the one that matches the batteries you own. Milwaukee M18 owners should pick the 2828-20. DeWALT 20V/60V FlexVolt owners should consider the DCST972X1 with a higher-capacity battery. EGO 56V loyalists should step up to the ST1502SA. And if you are starting fresh and want the longest runtime and widest ecosystem, the EGO 56V platform is the safest long-term bet. Whichever cordless string trimmer you choose from this list, you can check the latest price and read recent user reviews using the buttons above. To complete your outdoor setup, see our string lights guide for the perfect finishing touch to a well-kept yard.