After spending six weekends and roughly 38 hours running each one through tall grass, fence lines, and uneven terrain, I can say this with confidence: the best cordless string trimmers in 2026 genuinely close the gap with gas. Battery powered string trimmer technology has caught up faster than most homeowners realize.
If you’re hunting for the best cordless string trimmer, you’re probably weighing power against weight, price against runtime, and ecosystem compatibility against features like Powerload and Line IQ. I tested 10 cordless weed eater models across budget and premium tiers to find the strongest picks for small yards, half acre properties, and everything in between.
Our top winner, the Makita XRU15PT1, paired four 5.0Ah batteries with a brushless motor strong enough to chew through two inch brush. For homeowners who already own M18 or 40V batteries, sticking with that brand ecosystem often beats starting fresh. I’ll break down each pick, share what we measured, and explain which cordless grass trimmer fits your lawn and your wallet.
Below, I cover the best battery powered string trimmer picks, our testing methodology, a cordless vs gas reality check, and a buying guide focused on the specs that actually matter.
Table of Contents
Top 3 Picks at a Glance (September 2026)
Best Cordless String Trimmers in 2026
| Product | Specifications | Action |
|---|---|---|
| Makita XRU15PT1 36V Brushless String Trimmer Kit |
|
Check Latest Price |
 BLACK+DECKER LST300 20V MAX Trimmer and Edger |
|
Check Latest Price |
 BLACK+DECKER LST522 20V MAX 2 Speed Trimmer |
|
Check Latest Price |
 BLACK+DECKER LST140C 40V MAX 13 inch Trimmer |
|
Check Latest Price |
 WORX WG170.2 20V 3 in 1 Trimmer |
|
Check Latest Price |
 EGO Power+ ST1623T 16 inch Line IQ Trimmer |
|
Check Latest Price |
 EGO Power+ ST1511T 15 inch Powerload Trimmer |
|
Check Latest Price |
 EGO Power+ ST1521S 15 inch Carbon Fiber Split Shaft |
|
Check Latest Price |
 RYOBI 40V Attachment Capable String Trimmer |
|
Check Latest Price |
 WORX WG163 20V 12 inch Trimmer and Edger |
|
Check Latest Price |
How We Tested
Our team spent six weekends putting these 10 cordless string trimmers through real yard work: overgrown fence lines, thick dandelion patches, edge cleanup along driveways, and full perimeter runs on a half acre lawn. We logged runtime, weight fatigue after 20 minutes of continuous use, and how each line feed system held up under stress.
Each model was tested with its stock head and bundled battery. We measured cutting time per watt hour using a stopwatch and the same grass height across runs. We loaded 0.080 to 0.095 inch trimmer line (matching each model’s spec) and recorded how many times we had to bump or auto feed per 15 minute session.
Balance and ergonomics matter as much as raw power. I noted arm fatigue after a 20 minute run, whether the included shoulder strap was usable, and how easy each one was to convert to edger mode. Tools like the best beard trimmers in our other guides follow similar testing rigor: same use cases, same measurables.
1. Makita XRU15PT1 – Best Cordless String Trimmer Overall
Makita XRU15PT1 36V (18V X2) LXT® Brushless String Trimmer Kit with 4 Batteries (5.0Ah)
36V from dual 18V
15 inch swath
6500 RPM
3 year warranty
4 x 5.0Ah batteries
Pros
- Brushless motor with direct drive
- Automatic Torque Drive Technology
- 3 speed control from 3500 to 6500 RPM
- 4 batteries and dual port charger included
- 15 inch cutting swath
Cons
- Premium price point
- Stock trimmer head feels awkward; many swap for aftermarket
The Makita XRU15PT1 was the most powerful cordless weed eater in our test. It runs on two 18V LXT batteries in series, giving it 36V of cutting force, and the included four 5.0Ah packs kept me going for an entire afternoon without a recharge break.
What surprised me most was the Automatic Torque Drive Technology. The trimmer senses load and shifts RPMs from 3,500 to 6,500 without me touching the trigger. Cutting through knee high grass in our test paddock, the motor ramped up on its own and never bogged down. On light edging it dropped back to a quieter speed, saving battery.
The 15 inch cutting swath covers ground quickly, and the bump and feed head uses 0.080 inch twisted quiet line that noticeably cuts noise. I did swap the stock head for an aftermarket Speed-Feed unit after the first hour. The stock head requires a fiddly threading process that cost me time, which is a known complaint among Makita users.
At 10 pounds bare, with batteries on top, this is not the lightest trimmer. The included shoulder strap is mandatory for long sessions. After 30 minutes of fence line work, my arms felt tired but not wrecked, and that balance held up across all three testers on our team.
For whom its good
Homeowners with half acre to multi acre properties who already own Makita 18V LXT tools will get the most value here. With four 5.0Ah batteries rotating through the dual port charger, this is a cordless weed wacker that genuinely replaces gas for daily use. Landscapers and serious DIYers will appreciate the three speed control and torque sensing.
For whom its bad
If you have a small urban lot under a quarter acre, the XRU15PT1 is overkill. Its weight and price make less sense when a 20V trimmer can finish the same job in 15 minutes. Casual users who only trim once a month should look at lighter, cheaper options.
2. EGO ST1521S – Best Premium Power Pick
EGO POWER+ String Trimmer, Battery Powered, 15″ Trimmer for Weeds and Grass with POWERLOAD and Carbon Fiber Split Shaft, Includes 56V 2.5Ah Battery and Charger – ST1521S
56V ARC Lithium
14 to 15 inch swath
5800 RPM
5 year tool warranty
Lifetime shaft warranty
Pros
- Powerload automatic line winding
- Carbon fiber split shaft with lifetime warranty
- Brushless motor with high efficiency
- Fan cooled charging prevents overheating
- Compatible with all EGO 56V ARC Lithium tools
Cons
- Premium price point
- Stock replacement line wears relatively fast
- Heavier than smaller residential models
The EGO ST1521S feels like the most refined cordless string trimmer in this lineup. The carbon fiber split shaft is a standout: EGO backs it with a lifetime warranty, which tells you something about how confident they are in the material. After three weekends of hard use, the shaft still looks new.
Powerload is the headline feature, and it works exactly as advertised. Press a button, feed the line into the head, and the motor winds it for you in about 10 seconds. I used to dread restringing trimmers; with the ST1521S, I actually enjoy it. This same convenience shows up in our patio string lights guide where simple, well-designed features win the day.
The 56V ARC Lithium battery system delivers enough torque to handle thick weeds without bogging. Runtime on the bundled 2.5Ah pack hit 38 minutes in our heavy use test, which is honest performance for residential jobs. With a larger 5.0Ah or 7.5Ah ARC battery, you can stretch that to over an hour.
Switching between trimmer and edger modes takes one twist of the head. The 14 to 15 inch cutting swath is the sweet spot between coverage and precision, and the variable speed trigger gives you real control around delicate landscaping.
For whom its good
Homeowners who want gas like cutting power and a tool that will last a decade. The split shaft also accepts attachments, so if you ever want to add a pole saw or blower to the same tool, the EGO platform supports it. Anyone already invested in EGO mowers and blowers will appreciate the battery compatibility.
For whom its bad
Casual users with small yards and no plans to expand their outdoor tool collection will not recover the premium price. If you only need a trimmer once a month, look at the budget picks below.
3. EGO ST1623T – Best 16 Inch Trimmer with Line IQ
EGO POWER+ 16″ Cordless Weed Trimmer with Battery and Charger – ST1623T
56V ARC Lithium
16 inch swath
60 minute runtime
4.0Ah battery
5 year tool warranty
Pros
- Line IQ maintains continuous 16 inch cutting swath
- Powerload automatic line reloading
- Telescopic carbon fiber shaft
- 60 minute runtime with 4.0Ah battery
- Brushless motor for high efficiency and low vibration
Cons
- Heavier than smaller residential trimmers
- Premium price over basic models
EGO’s ST1623T adds Line IQ to the Powerload system, and the combination is genuinely useful. Line IQ automatically adjusts the cutting line as it wears, so you always get the full 16 inch swath without bumping or stopping. During an hour of fence line trimming, I never had to manually advance the line.
At 7.5 pounds bare, this trimmer sits in the middle of the pack weight-wise. The telescopic carbon fiber shaft let me dial in the exact length for my 5 foot 8 height, and the digital variable speed selector gives precise control.
Runtime from the bundled 4.0Ah battery came in at 56 minutes during my standard perimeter run on a quarter acre lawn. That is enough to finish most residential jobs on a single charge. Fast charging in 55 minutes means I can top off during a lunch break and keep working.
The 320W charger included in the kit is a meaningful upgrade over the 56V standard charger. If you already have EGO batteries, you can swap them in and out across mowers and blowers without buying new chargers. The ARC Lithium platform is one of the deepest cordless outdoor ecosystems in 2026.
For whom its good
Homeowners with half acre to one acre lawns who want the convenience of truly automatic line management. Anyone who has fought with bump feed heads on hot summer days will appreciate Line IQ. Pair it with a higher capacity EGO battery for full day runtime.
For whom its bad
Users with very small yards may not need the 16 inch swath. A lighter 15 inch trimmer covers the same ground in a slightly longer session with less arm fatigue. If you do not already own EGO batteries, the upfront cost stacks up quickly.
4. BLACK+DECKER LST300 – Best Budget Cordless String Trimmer
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
12 inch swath
6200 RPM
5.7 lbs
2 year limited warranty
Pros
- Very lightweight and easy to maneuver
- Quick assembly out of the box
- AFS automatic feed works reliably
- Compatible with other 20V MAX batteries
- Affordable entry level price point
Cons
- Less torque against thicker weeds
- Single battery limits runtime on larger yards
- Battery takes about 5 hours to charge
The BLACK+DECKER LST300 has more than 9,000 reviews for a reason: it is the cheapest cordless string trimmer that genuinely works for small yard chores. At 5.7 pounds and 20V MAX, it handles the kind of trimming work most of us do on a Saturday morning: edge the walkway, knock back weeds along the fence, done.
Automatic Feed Spool technology (AFS) is the standout. No bumping required; the trimmer feeds line as it wears. Over three weekends of testing, I never had a feeding failure. The 2 in 1 design converts to an edger by twisting the head, with a guide wheel for cleaner lines along sidewalks.
The 2.0Ah battery gives roughly 25 to 35 minutes of runtime depending on grass thickness. That is enough for a small urban lot but not enough for a half acre yard without a second battery on the charger.
The wall mountable charging base is a thoughtful touch for a budget tool. Hang it in the garage, drop the battery in, and forget about it until next weekend.
For whom its good
First time homeowners, renters, and anyone with a small yard under a quarter acre. The LST300 also works as a secondary trimmer for detail work if you already own a beefier 40V or 56V model. Seniors and anyone with reduced grip strength will appreciate the light weight.
For whom its bad
Thick brush and heavy overgrowth are not this trimmer’s friend. If your yard has unmanaged sections with weeds taller than your knee, the LST300 will struggle. For those situations, step up to the 40V LST140C or any of the EGO models above.
5. EGO ST1511T – Best 15 Inch Trimmer for Mid Sized Yards
EGO Power+ 15″ Cordless Weed Trimmer with Battery and Charger – ST1511T
56V ARC Lithium
15 inch swath
5800 RPM
45 minute runtime
5 year tool warranty
Pros
- Powerload automatic line reloading
- Brushless motor for strong cutting power
- Telescopic aluminum shaft for height adjustment
- Variable speed with two settings
- Solid 45 minute runtime on 2.5Ah battery
Cons
- Heavier than smaller residential trimmers
- Some users report threading issues with replacement line
The EGO ST1511T is a step up from the LST300 without the premium price tag of the carbon fiber ST1521S. It still uses Powerload and the 56V ARC Lithium system, so line reloading is still a 10 second job.
Runtime from the bundled 2.5Ah battery came in at 42 minutes during heavy use in our test paddock, which lands it in the same neighborhood as the larger ST1623T on a per minute basis. Charging takes about 50 minutes, so you can finish a yard and be topped off before the next weekend.
The variable speed trigger with two settings is more useful than I expected. Low speed handles light trimming without draining the battery, while high speed chews through thick weeds. The telescopic aluminum shaft is sturdy, though it lacks the lifetime warranty of the carbon fiber model.
At 10.3 pounds, the ST1511T is on the heavier side. Long sessions require the included shoulder strap, and I found the balance tilted slightly toward the cutting head.
For whom its good
Homeowners with quarter acre to half acre lawns who want premium features without the premium price. The ST1511T also makes sense as an upgrade path from a 20V trimmer: same workflow, but more power and longer runtime.
For whom its bad
Anyone who already owns the ST1521S or ST1623T should not double up. If you want maximum runtime in a single charge, look for kits that bundle a 5.0Ah or 7.5Ah ARC battery instead of the 2.5Ah pack.
6. BLACK+DECKER LST522 – Best 20V with Extended Runtime
BLACK+DECKER 20V MAX 12 Inch Weed Eater Cordless String Trimmer and Wheeled Edger Lawn Tool with Spool, 2.5Ah Battery and Charger Included, Lightweight, 2 Speed PowerDrive (LST522)
20V MAX
12 inch swath
2 speed
2.5Ah battery
2 year limited warranty
Pros
- 2.5Ah battery offers 66 percent more runtime
- AFS Automatic Line Advancement
- Dual Speed Control for power or runtime
- Quick trimmer to wheeled edger conversion
- Lightweight at 5.7 lbs
Cons
- Premium soft grip handle can wear over time
- Single battery limits extended runtime
The BLACK+DECKER LST522 is the LST300’s smarter sibling. It swaps the smaller 2.0Ah battery for a 2.5Ah pack that delivers 66 percent more runtime per charge. During testing, I cleared two full edges and a fence line on a single battery without dipping into reserve.
Dual Speed Control is a real feature, not a marketing gimmick. Low mode handles light grass with less noise and longer runtime; high mode kicks in for thicker weeds. PowerDrive Transmission adds torque where the line meets the grass, which I appreciated when tackling a patch of neglected Bermuda.
The wheeled edging conversion is the cleanest in the budget category. Rubberized wheels guide the trimmer along sidewalks, producing a tidy edge without the wrist fatigue of freehand edging.
The premium soft grip handle is comfortable, though a few long term owners mention the rubber wearing through after a season or two. Replacement handles are available, and the tool itself keeps working.
For whom its good
Homeowners with small to mid sized yards who want more runtime than the base LST300 without jumping to 40V. The 2.5Ah battery is the right balance of weight and capacity for weekly trimming.
For whom its bad
Anyone with a heavy weed problem will still need a 40V or higher system. The 20V platform reaches its limit on brush and tall grass. Step up to the LST140C for that.
7. RYOBI 40V – Best Attachment Capable Trimmer
RYOBI 40-Volt Lithium-Ion Cordless Attachment Capable String Trimmer, 4.0 Ah Battery and Charger Inc
40V lithium ion
13 to 15 inch swath
Variable speed
Expand it compatible
90 minute charger
Pros
- Attachment capable with RYOBI expand it system
- 40V battery provides solid cutting power
- Adjustable 13 to 15 inch cutting width
- Reel easy bump feed head
- Variable speed trigger for control
Cons
- Heavier at 13.9 lbs
- Battery runtime shorter than advertised in dense growth
The RYOBI 40V attachment capable string trimmer is the most versatile tool in this lineup for the right buyer. The split shaft accepts RYOBI expand it attachments, which means one motor can drive a pole saw, hedge trimmer, edger, cultivator, and more. For homeowners who already own RYOBI 40V tools, this is a no brainer.
Cutting power is honest 40V performance. The brushless motor pushes through most residential weeds, and the 13 to 15 inch adjustable cutting width is a thoughtful feature: tighten it up around delicate landscaping, open it up along fence lines.
Reel easy bump feed head is the simplest in the test group to reload. Two taps on the ground and fresh line feeds. The variable speed trigger lets you dial back for light trimming, which extends runtime noticeably.
Where this trimmer stumbles is weight. At 13.9 pounds with the 4.0Ah battery, it is the heaviest in this lineup. Long sessions demand the shoulder strap, and balance is forward heavy. Our team tester in his 60s found it tiring after 20 minutes.
For whom its good
Homeowners committed to the RYOBI 40V platform who want one motor to power multiple outdoor tools. If you already own a RYOBI mower or blower, this trimmer shares batteries with all of them. The expand it system is the deepest attachment ecosystem in the homeowner category.
For whom its bad
Anyone with a small yard or anyone who values light weight above versatility. The 13.9 pound figure is real, and even with the strap, it is more tool than a quarter acre needs. Consider the BLACK+DECKER 20V models for smaller properties.
8. WORX WG170.2 – Best 3 in 1 Trimmer, Edger, and Mini Mower
Worx 20V 12″ 3-in-1 Cordless String Trimmer/Lawn Edger/Mini Mower, WG170.2
20V Power Share
12 inch swath
3 in 1 function
5.5 lbs
2.0Ah battery
Pros
- 3 in 1 design: trimmer
- edger
- mini mower
- Lightweight at 5.5 lbs
- Easy to fold and store
- Compatible with WORX Power Share platform
- 7 position adjustable handle
Cons
- Battery life is short for larger jobs (25 to 40 minutes)
- Instructions for converting modes are unclear
- Command feed mechanism can be unreliable
The WORX WG170.2 is the only trimmer in this guide that doubles as a mini mower. The 3 in 1 design converts from trimmer to edger to a small push mower with a few adjustments. For homeowners with very small lawns who do not want to own a separate mower, that versatility is genuinely useful.
At 5.5 pounds bare, this is one of the lightest cordless string trimmers available. The 7 position adjustable handle and telescopic shaft accommodate a wide range of user heights, and the tool folds down for compact garage storage.
The WORX Power Share platform is a quiet strength. If you already own WORX 20V or 40V tools, batteries swap freely. If not, the included 2.0Ah battery and fast charger are a reasonable starting point.
The command feed line advancement is the main weak point. About one in five times during testing, the line failed to feed on demand and required manual spool unwinding. It works, but it is not as polished as Powerload or AFS.
For whom its good
Apartment dwellers, townhouse owners, and anyone with a tiny lawn where a full size mower feels excessive. The mini mower function handles small patches that a push mower cannot reach and a full size mower cannot justify.
For whom its bad
Anyone with a yard larger than a quarter acre will outgrow the WG170.2 quickly. The short battery life and small cutting swath make it impractical for serious work. For those cases, jump to a 40V or 56V model.
9. WORX WG163 – Best Lightweight Trimmer and Edger
WORX 20V 12″ 2-in-1 Cordless String Trimmer & Electric Lawn Edger, WG163
20V Power Share
12 inch swath
7600 RPM
5.5 lbs
2 batteries included
Pros
- Lightweight at 5.5 lbs
- Comes with two batteries
- Push button command feed
- Quick trimmer to edger conversion
- Rubberized wheels guide edging
Cons
- Command feed line can be inconsistent
- Instructions are unclear
- Battery runtime is 15 to 30 minutes in heavy use
The WORX WG163 is the trimmer I recommend most often for older homeowners, smaller users, and anyone who values light weight above everything else. At 5.5 pounds, it is among the lightest cordless weed eater models on the market, and the package includes two 20V batteries so you can keep working while the other charges.
The 7600 RPM no load speed sounds impressive, but real world cutting is closer to the LST300. This is a tool for light to medium residential work: weekly trimming, edge cleanup, and occasional weed patrol. It is not designed for thick brush.
The push button command feed is the standout feature in theory. One button press and line advances. In practice, the mechanism can be inconsistent. About 10 percent of the time during testing, the line did not advance and required manual spool unwinding. Powerload and AFS handle this more reliably.
The 90° pivoting head is genuinely useful. It tilts to reach under shrubs and along slopes without forcing you into awkward positions. For seniors or anyone with back issues, that flexibility matters more than raw power.
For whom its good
Seniors, women, petite users, and anyone who struggles with heavier trimmers. The included two battery pack is a real value at this price point. If you already own WORX 20V tools, the WG163 is a natural addition.
For whom its bad
Anyone with thick brush, large yards, or commercial workloads. The WG163 is light because it is small. For demanding work, the 40V LST140C or any of the EGO models are the right tools.
10. BLACK+DECKER LST140C – Best 40V Budget Trimmer
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 Lithium Ion
13 inch swath
PowerDrive
6.4 lbs
3 year limited warranty
Pros
- 40V battery provides noticeably more power than 20V
- State of charge indicator on battery
- Wall mountable charging base
- Lightweight relative to its power
- Auto feed works smoothly
Cons
- Included 1.5Ah battery has limited runtime
- Some users report battery failure after about a year
- Charging is slow
The BLACK+DECKER LST140C is the cheapest way into a 40V cordless string trimmer. At well under half the price of premium 40V models, it delivers genuine 40V cutting power: enough to handle thick grass and overgrowth that 20V models cannot touch.
PowerDrive high torque transmission is the engineering highlight. It transfers more torque from the motor to the cutting string, which means fewer stalls in heavy grass. During testing, I cleared a patch of waist high weeds without bogging down, which is something the 20V LST300 could not do.
The 13 inch cutting swath is wider than most 12 inch budget trimmers, which means fewer passes. The 3 year limited warranty is the longest in the budget category.
The bundled 1.5Ah battery is the main compromise. Runtime on heavy work comes in around 18 to 25 minutes, which is short. Buy a second 40V battery to swap in, and you have a serious trimmer for the price.
For whom its good
Homeowners who need 40V cutting power without the premium price. Anyone with a half acre yard who already owns BLACK+DECKER 40V MAX tools will appreciate the battery compatibility. The 3 year warranty is meaningful coverage.
For whom its bad
Anyone who needs long runtime from a single battery. The 1.5Ah pack is the bottleneck. Budget for a second battery if you have a larger property.
Cordless vs Gas: Are Battery Trimmers Good Enough?
This is the question I hear most often from homeowners considering the switch. After six weekends of testing 10 cordless models, here is the honest answer: for 95 percent of residential work, the best cordless string trimmers in 2026 match or beat a comparable gas trimmer.
The 5 percent gap covers commercial crews working eight hour days across multi acre properties, brush cutting through saplings, and heavy duty applications where only a 35cc or larger gas engine will do. For everyone else, the math favors cordless.
Modern 40V, 56V, and 60V brushless motors produce torque that rivals 25cc to 30cc gas engines. The Makita XRU15PT1 and the EGO ST1623T both chewed through our thick weed test plot without slowing. Battery powered string trimmer models with brushless motors also run quieter (typically 75 to 85 dB versus 95 to 110 dB for gas), vibrate less, and require zero fuel mixing.
The real advantage is ecosystem. If you already own a RYOBI 40V mower or a BLACK+DECKER 20V drill, the batteries swap between tools. That shared platform saves money and storage space. Our outdoor lighting guide explores a similar idea: once you commit to a platform, every new tool gets cheaper.
Battery Platform Ecosystem: Pick Your Brand Family
One of the most overlooked decisions in this category is which battery platform to commit to. Most major brands sell trimmers, mowers, blowers, chainsaws, and even hedge trimmers on the same battery system. Choosing a brand locks you into an ecosystem, but it also unlocks real savings and convenience.
EGO Power+ 56V ARC Lithium is the deepest residential platform. The trimmers, mowers, blowers, chainsaws, and snow blowers all share batteries. If you want one ecosystem to power your entire yard, EGO is hard to beat. The ST1521S and ST1623T both accept any ARC battery from 2.5Ah up to 10.0Ah.
RYOBI 40V is the value leader. Home Depot exclusive, RYOBI offers everything from trimmers to pressure washers to lawn mowers on the same 40V battery. The 40V attachment capable trimmer accepts RYOBI expand it attachments and works with any 40V battery you already own.
Milwaukee M18 is the contractor choice. Already owning M18 tools means your trimmer shares batteries with your impact driver, sawzall, and drill. The catch: Milwaukee does not push a deep outdoor platform, so ecosystem benefits are limited.
Makita 18V X2 (36V) is the pro grade path. The XRU15PT1 runs two 18V batteries in series, which means every 18V LXT battery you own works in the trimmer. The catch is the same as Milwaukee: limited outdoor tool depth.
BLACK+DECKER 20V MAX and 40V MAX are budget friendly but ecosystem limited. The trimmers work fine, but the broader outdoor tool catalog is shallower than EGO or RYOBI. Choose BLACK+DECKER if you already own their tools, not as a fresh ecosystem entry.
What to Look for in a Cordless String Trimmer
After testing 10 models and reading hundreds of owner reviews on r/lawncare and r/landscaping, here are the specs that actually matter when choosing a cordless string trimmer.
Voltage and Battery Platform
20V MAX trimmers are lighter and cheaper, and they handle small yards with thin grass just fine. 40V and higher systems deliver noticeably more cutting power and longer runtime. If you already own batteries from a brand like RYOBI or EGO, staying in that ecosystem usually gives the best value. For half acre or larger properties, step up to 40V or higher.
Cutting Swath
The cutting swath is the diameter of the path the trimmer cuts in one pass. 12 inch swath is standard for residential work. 13 to 15 inch swath covers ground faster and is common on 40V and higher models. 16 inch swath (like the EGO ST1623T) is for users who want maximum coverage per pass.
Weight and Balance
Trimmers under 6 pounds are easy to maneuver and ideal for seniors or anyone with reduced strength. Models in the 7 to 10 pound range offer more power but cause arm fatigue after 20 minutes. Trimmers over 12 pounds demand a shoulder strap for comfortable extended use.
Line Feed System
Bump feed is the classic: tap the head on the ground to release more line. Reliable but requires stopping. Automatic feed (AFS) advances line as it wears without bumping. Rapid load or Powerload winds new line automatically at the push of a button. Line IQ adds automatic line length adjustment on top of rapid load.
Shaft Style
Straight shafts reach under shrubs and along fence lines more easily. Curved shafts are lighter and often cheaper. Telescopic shafts adjust to your height for better ergonomics. Split shafts accept attachments (pole saw, hedge trimmer, cultivator) for maximum versatility.
Runtime and Battery Capacity
Battery capacity is measured in amp hours (Ah) or watt hours (Wh). A 2.0Ah battery typically delivers 20 to 30 minutes of real world runtime. A 4.0Ah battery doubles that. A 5.0Ah battery pushes past an hour. For larger yards, buy a second battery and rotate.
Safety and PPE
Always wear safety glasses, long pants, and closed toe shoes when using any string trimmer. Some trimmers throw debris at high velocity. Ear protection matters for gas trimmers; cordless models are quieter but still warrant consideration.
Frequently Asked Questions
Who makes the best cordless string trimmer?
Based on hands-on testing and tens of thousands of homeowner reviews, EGO Power+ and Makita consistently rank at the top of the cordless string trimmer category. EGO’s 56V ST1521S and ST1623T lead on automatic line features and ecosystem depth, while Makita’s XRU15PT1 wins for raw cutting power and includes four 5.0Ah batteries. RYOBI is the value favorite thanks to its broad 40V platform and expand it attachment system.
Which is better for a cordless trimmer, 20V or 40V?
20V cordless string trimmers are lighter, cheaper, and well suited to small yards with thin grass and minimal weeds. 40V and higher systems deliver more cutting power and longer runtime, which makes them the better choice for medium to large yards, thicker grass, and regular overgrowth. If you already own 20V or 40V batteries from a brand like RYOBI or BLACK+DECKER, staying in that ecosystem usually gives you the best value.
What is the best cordless string trimmer for home use?
For most homeowners, the best cordless string trimmer is one that balances power, runtime, and weight at a reasonable price. The EGO ST1521S hits that sweet spot with a 15 inch cutting swath, 56V battery, and the Powerload automatic line reloading system. For tighter budgets, the BLACK+DECKER LST300 or LST522 cover small yards without breaking the bank.
What is the best battery string trimmer according to Reddit users?
On r/lawncare and r/landscaping, EGO Power+ is the most consistently recommended brand for homeowners, while Stihl and Echo are the prosumer favorites. RYOBI is the go-to for budget-conscious buyers who already use the 40V platform. Makita gets strong mentions from users who already own 18V LXT tools and want to leverage their existing battery investment.
Are cordless string trimmers as powerful as gas?
For 95 percent of residential work, modern cordless string trimmers match or beat a comparable gas trimmer. 40V, 56V, and 60V brushless motors produce torque that rivals 25cc to 30cc gas engines. The gap remains for commercial crews working eight hour days across multi acre properties and brush cutting through saplings. For typical homeowner use, battery powered models win on noise, vibration, maintenance, and ecosystem compatibility.
How long do cordless string trimmer batteries last?
A 2.0Ah battery typically delivers 20 to 30 minutes of real world runtime under load. A 4.0Ah battery doubles that to roughly 45 to 60 minutes. A 5.0Ah battery pushes past an hour. Lithium-ion batteries themselves last 3 to 5 years with proper care: avoid storing them fully drained in extreme heat or cold, and top them off before long winter storage.
Can a cordless string trimmer cut thick weeds and brush?
Yes, but only on the higher voltage systems. 40V and above trimmers like the Makita XRU15PT1 and EGO ST1623T will cut through thick weeds, tall grass, and even light brush. 20V models will bog down in heavy overgrowth. For saplings and woody brush, you need a dedicated brush cutter attachment or a higher powered gas trimmer.
The Bottom Line
After testing 10 cordless string trimmers across budgets, voltage tiers, and feature sets, the Makita XRU15PT1 is our best cordless string trimmer overall. Its 36V brushless motor, four included 5.0Ah batteries, and Automatic Torque Drive Technology give it the power to handle almost any residential job.
If raw cutting force is not your top priority, the EGO ST1521S offers a more refined experience with Powerload, a carbon fiber split shaft, and the deepest 56V ecosystem in the residential market. For tight budgets, the BLACK+DECKER LST300 is the cheapest cordless string trimmer that genuinely works for small yards.
Before you buy, check which battery platform you are already invested in. Sticking with RYOBI, EGO, Makita, or BLACK+DECKER lets you share batteries across tools and saves real money over time. For more outdoor guides and reviews, check our picks for the best solar string lights for patios.