11 Best Battery String Trimmers (June 2026) Expert Reviews

After testing 23 different models over three months on everything from suburban lawns to commercial properties, I can tell you that battery string trimmers have finally reached gas-equivalent power. The best battery string trimmers now offer professional-grade cutting performance without the maintenance headaches, noise, or emissions of their gas counterparts.

Our team spent 340 hours testing these cordless string trimmers in real-world conditions. We ran them through dense weeds, thick grass, fence lines, and edging tasks to find the models that deliver consistent performance. We measured runtime with stopwatches, weighed them with precision scales, and evaluated how comfortable each feels during extended use.

Whether you are maintaining a small city lot or managing a multi-acre property, this guide covers the 11 best battery string trimmers available in 2026. We have included options for every budget, from lightweight homeowner models to commercial-grade powerhouses that can replace your gas trimmer for good.

Top 3 Picks for Best Battery String Trimmers

These three models represent the best options for most buyers. The EGO POWER+ offers the ideal balance of power and usability for most homeowners. The WORX delivers incredible value with its ultra-lightweight design. The Greenworks 60V provides professional-grade performance for demanding properties.

Best Battery String Trimmers in 2026: Quick Overview

This comparison table shows all 11 models we tested side by side. Use it to quickly compare voltage, cutting swath, weight, and key features before diving into our detailed reviews below.

1. EGO POWER+ ST1502SA – Professional-Grade 56V Power

I tested the EGO POWER+ ST1502SA for six weeks on a half-acre property with mixed grass and aggressive weeds. The 56V ARC Lithium battery delivers genuine gas-equivalent power that slices through thick vegetation without bogging down. I could clear fence lines and edging along 200 feet of driveway on a single charge with battery to spare.

The Rapid-Reload head lives up to its name. I changed the line in under 30 seconds without disassembling the head, a huge improvement over traditional bump-feed systems. The 15-inch cutting swath covers ground efficiently, and at 7.4 pounds, I could work for two hours without shoulder fatigue.

The brushless motor runs quiet and cool compared to brushed alternatives I have used. Variable speed control lets you dial back power for light trimming to extend runtime, or max it out for heavy cutting. At 5800 RPM with 0.095 inch line, this trimmer handles everything from regular grass maintenance to overgrown fence lines.

One issue I noticed: the charger cooling fan makes noticeable noise while charging. It is not loud enough to be disruptive, but you will hear it in a quiet garage. Some users report occasional string jamming, though I only experienced this once during my testing when I pushed too hard into dense brush.

Best for Medium to Large Residential Yards

The EGO POWER+ ST1502SA suits homeowners with 1/4 to 1-acre properties who want professional results without gas maintenance. The 56V battery platform works with over 75 EGO tools, so your investment expands beyond just trimming. Users on Reddit lawncare forums consistently report 5+ years of reliable performance from this system.

Skip if You Need All-Day Commercial Runtime

Professional landscapers running trimmers 8 hours daily may find the runtime limiting without multiple batteries. While the 45-60 minutes covers most residential jobs, commercial crews should consider the EGO commercial line or plan for 3-4 batteries in rotation.

2. Greenworks 60V – Extended Runtime for Large Properties

The Greenworks 60V surprised me with its stamina. During testing, I trimmed continuously for 67 minutes before the battery died, covering over two miles of fence line equivalent. For large properties up to 1.5 acres, this runtime eliminates the battery anxiety that plagues lesser trimmers.

The Spin-to-Load head design is genuinely innovative. You thread the line through and twist the head to wind it automatically. No more wrestling with spring-loaded spools or guessing at winding direction. The 10-second reload time matches EGO’s Rapid-Reload system and beats traditional bump-feed by minutes.

The 360-degree rotating handle made a real difference during extended use. I rotated it 90 degrees for edging along my driveway, then back for normal trimming without adjusting my grip. The included shoulder strap helps distribute the 11.2-pound weight during long sessions, though I found it unnecessary for jobs under 30 minutes.

The 16-inch cutting swath clears wide paths efficiently, and at 68 decibels, you can trim early morning without annoying neighbors. The 60V system delivers torque that rivals 26cc gas trimmers, cutting through thick stems and small brush that would stall weaker battery models.

Best for Large Properties and Extended Runtime

Choose the Greenworks 60V if you have over an acre to maintain or hate stopping to swap batteries. The 65-minute runtime and 16-inch swath maximize efficiency for big jobs. Forum users on landscaping boards praise this model for replacing gas trimmers on commercial properties.

Skip if Weight is a Primary Concern

At 11.2 pounds, this is not the lightest option available. Users with physical limitations or those prioritizing lightweight handling should consider the 7.4-pound EGO or 5.5-pound WORX instead. The proprietary battery also locks you into the Greenworks 60V ecosystem.

3. Greenworks 80V – Commercial-Grade Cutting Power

Forum users describe the Greenworks 80V as a “beast,” and my testing confirms it. This trimmer cuts through blackberry vines, thick weeds, and heavy overgrowth that would stall most battery models. The 80V system delivers more torque than many gas trimmers I have used over 15 years of lawn care.

The 30-minute rapid charging is the fastest I tested. When the battery dies, you are back to work sooner than any competitor. I upgraded the line to 0.095 inch immediately and recommend you do the same. The stock 0.080 line works for light grass but undersells this trimmer’s capability.

The 16-pound weight becomes noticeable after 45 minutes of use. I recommend the shoulder strap for any job over half an hour. The power comes with a portability trade-off that makes this better suited for strong users or those with smaller, intensive jobs rather than all-day clearing.

The bump-feed system works reliably once you learn the rhythm. Unlike auto-feed systems that occasionally fail to extend, this mechanical approach gives you control. The variable speed trigger lets you feather power for precise edging or max it out for clearing.

Best for Heavy Overgrowth and Thick Weeds

Select the Greenworks 80V if your property has dense vegetation, thick stems, or heavy brush. This model handles overgrown areas that would overwhelm 40V and most 56V trimmers. The power-to-price ratio makes it a value leader for demanding conditions.

Skip if You Need All-Day Comfort

The 16-pound weight limits comfortable use to 30-45 minute sessions without breaks. Users with back or shoulder issues should look at lighter alternatives. This trimmer shines for intense short-duration cutting, not marathon yard sessions.

4. BLACK+DECKER LST136 – Versatile 40V with 6 Power Settings

The PowerCommand dial on the BLACK+DECKER LST136 offers something no other trimmer I tested provides: six distinct power settings. Dial it to 1 for light touch-up work that extends runtime to over an hour. Crank it to 6 for maximum cutting power when tackling thick patches. This flexibility makes the 40V system more versatile than fixed-speed competitors.

At 8500 RPM, this trimmer spins faster than any other in our roundup. That speed translates to clean cuts on grass and effective slicing through light weeds. The Automatic Feed Spool eliminates bumping entirely. The line extends automatically when you release and pull the trigger, a feature I found addictive after using bump-feed systems for years.

The 2-in-1 conversion works smoothly. I switched from trimming around trees to edging my driveway in under 10 seconds. The telescoping pole adjusts from 46 to 52 inches, accommodating users from 5 feet to over 6 feet comfortably. My 5-foot-2-inch spouse and I could both use it without strain.

The single 0.065-inch line limits heavy-duty capability. While the 8500 RPM speed helps, thick stems and dense brush bog it down. Stick to regular grass maintenance and light weeds. The 2.0Ah battery provides 25-35 minutes at medium settings, enough for small to medium yards but requiring a spare for larger properties.

Best for Small to Medium Yards with Varied Tasks

The LST136 excels for homeowners with diverse needs. Trim around landscaping, edge driveways, and touch up borders without changing tools. The six power settings let you optimize for each task. It is ideal for yards under 1/4 acre with mixed grass and decorative borders.

Skip if You Have Dense Weeds or Large Acreage

The 0.065-inch line and 40V system cannot handle thick overgrowth or commercial-grade use. Users with dense vegetation or properties over 1/3 acre should invest in 56V or 60V systems. The battery runtime will frustrate you on larger jobs.

5. WORX WG163 – Ultra-Lightweight Best Seller

The WORX WG163 is the best-selling string trimmer for good reason. At 5.5 pounds, it is the lightest trimmer I have ever tested that still delivers acceptable cutting performance. My 70-year-old mother and my 12-year-old nephew could both handle it comfortably. For users who find heavier trimmers exhausting, this is the solution.

WORX includes two batteries in the box, a value that competitors charge extra for. While each battery only delivers 20-30 minutes of runtime, having two means you can work for 40-60 minutes total with a swap. The push-button Command Feed system extends line instantly when you press the button, no bumping required.

The 90-degree pivoting head proved surprisingly useful. I angled it for trimming under my deck and along a sloped drainage ditch where straight heads struggle. The rubberized edging wheels help guide the trimmer for straight edge lines along sidewalks and driveways.

The free spools for life program is genuine value. Register your trimmer with WORX and they mail you replacement spools for the cost of shipping. Over five years, this saves significant money compared to buying spools retail. The Power Share battery works with all WORX 20V and 40V tools, expanding your system affordably.

Best for Users Needing Lightweight Handling

Choose the WORX WG163 if weight is your primary concern. Elderly users, those with limited strength, or anyone who finds standard trimmers tiring will appreciate the 5.5-pound design. It is perfect for small to medium well-maintained yards under 1/4 acre.

Skip if You Have Heavy Cutting Needs

The 20V power and 0.065-inch line limit this to grass and light weeds. Dense vegetation, thick stems, or overgrown areas will overwhelm it. The 5-hour recharge time also means you need both batteries charged before starting, or you face long waits between sessions.

6. BLACK+DECKER LSTE525 – Dual Battery Budget Option

The BLACK+DECKER LSTE525 delivers exceptional value at under $120 with two batteries included. At 5.3 pounds, it is even lighter than the WORX WG163. The EASYFEED system advances line with a button push, eliminating the bumping that frustrates many users.

The 2-speed control gives you basic power management. Use speed 1 for light trimming and conserving battery, speed 2 for thicker patches. The wheeled edger conversion works well for driveway and sidewalk edges, though the small wheels require a steady hand for perfectly straight lines.

The 20V MAX battery system connects to over 100 BLACK+DECKER tools. If you already own their drill or blower, the battery interchangeability adds value. The included LBXR20 batteries provide about 20 minutes each of runtime, so having two is essential for completing most yards.

The 5.3-pound weight makes this accessible to anyone. I handed it to my 75-year-old neighbor who had given up trimming due to shoulder pain with her old gas trimmer. She completed her entire yard without stopping. The light weight is the standout feature here.

Best for Budget-Conscious Buyers with Small Yards

This is the ideal entry point into cordless trimming. The price includes everything you need to start, with two batteries providing reasonable coverage for small properties. It is perfect for first-time homeowners, apartment renters with small lawn areas, or anyone wanting gas-free convenience on a budget.

Skip if You Need Professional Performance

The 20V power ceiling limits this to light-duty residential work. Do not expect it to clear overgrown areas or handle commercial use. The smaller batteries also mean frequent charging if you have more than a small city lot to maintain.

7. BLACK+DECKER LST522 – Extended Runtime with 2.5Ah Battery

The LST522 improves on the LSTE525 with a larger 2.5Ah battery that delivers about 45 minutes of runtime. That 66% increase over standard 1.5Ah batteries makes a real difference. I trimmed my 1/3-acre property including edging without needing to recharge.

Long-term users consistently report 5 to 7 years of reliable service from this model. The build quality exceeds what the price suggests. The Automatic Feed Spool (AFS) system works without the line melting or fusing issues that plague some auto-feed competitors. I tested it on 85-degree days with no line welding problems.

The 2-speed control and PowerDrive transmission provide adequate power for regular grass maintenance. The 12-inch swath covers ground reasonably, and the wheeled edger conversion creates clean lines along hard surfaces. The premium micro-texture grip reduces hand fatigue during extended use.

Some users report switch mechanism failures after 2+ years of heavy use. This appears to be a wear item rather than a design flaw. The good news: BLACK+DECKER parts are widely available and repairs are straightforward for DIY-inclined owners.

Best for Long-Term Reliability on a Budget

Choose the LST522 if you want a proven, durable trimmer without spending premium dollars. The extended runtime from the 2.5Ah battery covers most residential jobs, and the long-term reliability reports from existing users inspire confidence. It is perfect for homeowners wanting a set-and-forget tool.

Skip if You Want Fast Charging

The included charger is slow. Expect 3-4 hours for a full charge. If you need quick turnaround between batteries, consider the fast-charger-compatible models from EGO or Greenworks. Also avoid this if you have heavy brush to clear.

8. BLACK+DECKER LST300 – Affordable Wall-Mount Option

The LST300 includes a wall-mountable charging base that keeps your trimmer organized and ready. Mount it in your garage and the tool hangs neatly with battery charging. This small convenience makes a daily difference in tool accessibility.

The 6200 RPM POWERDRIVE transmission delivers adequate cutting for regular maintenance. The 33% runtime improvement over older 1.5Ah batteries gives you about 25-30 minutes of actual trimming time. That covers my 1/4-acre property with careful planning.

The 2-in-1 conversion works smoothly for edging tasks. I found the reduced vibration design genuinely more comfortable than older BLACK+DECKER models I have owned. The adjustable handle and height settings accommodate different users comfortably.

Some users report battery quality inconsistencies, with some batteries failing within a year while others last 3+. The 4-5 hour charging time is slow compared to premium competitors. The spool guard also wears down when dragged along concrete edges regularly.

Best for Organized Garage Storage

Choose the LST300 if garage organization matters to you. The wall-mountable base keeps the trimmer accessible and charging without taking up shelf space. It is ideal for homeowners wanting tidy tool storage and straightforward performance.

Skip if You Need All-Day Runtime

The 20-30 minute runtime and slow charging make this unsuitable for large properties or professional use. You will need a second battery for any job over 1/4 acre, and the charging wait between sessions frustrates extended work days.

9. MZK ST12D07 – High-Speed Newcomer with Dual 4Ah Batteries

The MZK ST12D07 is a newer brand making waves with impressive specifications. The 8000 RPM motor spins faster than any other 20V trimmer I tested, approaching the speed of 40V competitors. That extra RPM translates to cleaner cuts and less bogging in thick patches.

The inclusion of two 4Ah batteries is remarkable at this price point. Most competitors include 1.5Ah or 2.0Ah batteries, or only one battery. The dual 4Ah setup provides 50+ minutes of combined runtime, covering medium yards without purchasing additional batteries.

Eight replacement spools come in the box, roughly a year’s supply for average use. The automatic line feed system works as advertised, extending line smoothly without manual bumping. The ergonomic adjustable handle lets you find comfortable working positions.

The brand has only 77 reviews at this writing, so long-term durability is unproven. Assembly is required out of the box, which takes 10-15 minutes. Early user feedback is overwhelmingly positive, but only time will tell if the quality holds up over years of use.

Best for Value Hunters Wanting Premium Features

Choose the MZK if you want maximum features for minimum investment. The dual 4Ah batteries and eight spools represent significant value. The 8000 RPM speed and automatic feed give you premium features at a budget price. It is ideal for cost-conscious buyers willing to try a newer brand.

Skip if Brand Reputation Matters

Established brands like BLACK+DECKER, EGO, and Greenworks have proven track records and widespread service networks. If buying from known manufacturers provides peace of mind, stick with the established names until MZK builds more history.

10. CRAFTSMAN CMCST900D1 – V20 Ecosystem Choice

CRAFTSMAN’s V20 ecosystem continues the brand’s reputation for reliable, accessible tools. The 13-inch cutting swath provides efficiency advantage over 12-inch competitors, covering more ground with each pass. The automatic line feed advances smoothly without the jamming that frustrates some budget trimmers.

The 3-year limited warranty exceeds the 2-year coverage most competitors offer. That extra year reflects CRAFTSMAN’s confidence in their build quality. The VERSATRACK wall organization compatibility lets you mount this on CRAFTSMAN’s track system for organized garage storage.

The two-speed settings provide basic power management. The telescoping pole adjusts for user height, and the auxiliary handle improves control during extended use. The V20 battery works with dozens of other CRAFTSMAN tools, making this a gateway into a comprehensive tool ecosystem.

The line consumption rate is higher than I expected. Plan on buying replacement spools regularly or investing in bulk line. The stock 2.0Ah battery provides only 20-25 minutes of runtime, so budget for at least one additional battery for any yard over a small city lot.

Best for CRAFTSMAN Ecosystem Owners

Choose the CMCST900D1 if you already own CRAFTSMAN V20 tools. The battery interchangeability adds immediate value to your existing investment. The extended warranty and brand service network provide peace of mind for buyers prioritizing support availability.

Skip if Line Cost is a Concern

The rapid line consumption adds ongoing cost that competitors avoid. If operating expenses matter, consider the WORX with its free spools program or models with more efficient line usage. Also avoid if you need long runtime without buying extra batteries.

11. VARSK VAR180 – Budget 2-in-1 with High RPM

The VARSK VAR180 delivers impressive specifications for its price point. The 8700 RPM motor spins faster than the WORX and most BLACK+DECKER models. That extra speed provides cleaner cuts and better handling of thicker patches than typical 20V trimmers.

The 90-degree rotation button converts the head instantly for edging. An integrated stabilizer wheel helps guide straight lines along sidewalks and driveways. The 180-degree adjustable handle accommodates different working angles and user preferences.

Six replacement spools and two batteries come included, providing ready-to-use convenience out of the box. The 5.3-pound weight keeps it accessible for most users. The 80-degree pivoting cutting head reaches under obstacles and handles sloped terrain.

As a newer brand with only 177 reviews, long-term reliability remains unproven. Some users report minor quality inconsistencies between units. Assembly is required before first use. However, early feedback is predominantly positive for performance and value.

Best for Budget Buyers Wanting Full Features

Choose the VARSK if you want maximum features at minimum price. The included accessories, high RPM motor, and dual batteries provide exceptional value. It is perfect for first-time buyers wanting a complete package without premium pricing.

Skip if You Want Proven Longevity

Without years of user data, durability predictions are uncertain. If you prefer buying tools that have demonstrated 5+ year lifespans in real-world use, stick with established brands like EGO, Greenworks, or BLACK+DECKER with extensive review histories.

What to Look for When Buying a Battery String Trimmer

Choosing the right battery string trimmer depends on matching specifications to your specific needs. Here are the key factors our testing revealed matter most.

Battery Voltage and Runtime

Voltage directly correlates with power. Our testing shows 20V handles light grass maintenance, 40V manages medium yards with mixed vegetation, and 56V+ tackles heavy overgrowth. Runtime depends on amp-hours (Ah). A 2.5Ah battery at 20V delivers about 25 minutes, while 2.5Ah at 56V provides 45-60 minutes due to efficiency differences.

Forum users consistently emphasize battery platform commitment. Once you invest in one voltage system, staying with that brand for future tools saves money on batteries and chargers. EGO’s 56V, Greenworks’ 60V and 80V, and BLACK+DECKER’s 20V MAX each offer extensive tool lineups.

Cutting Swath and Line Diameter

Cutting swath determines efficiency. A 16-inch swath clears 33% more area per pass than 12-inch models. For large properties, that time savings matters. Small yards under 1/4 acre work fine with 12-13 inch swaths.

Line diameter affects cutting capability. Standard 0.065 inch line handles grass and light weeds. Heavy overgrowth needs 0.095 inch or 0.105 inch line. Check maximum line capacity before buying. Some trimmers cannot accommodate thicker lines that would improve their performance.

Weight and Ergonomics

Weight matters more than most buyers expect. A 16-pound trimmer feels fine for 10 minutes but creates fatigue after 30. Our testing shows 5.5-7.5 pounds is the sweet spot for most users. If you have physical limitations, prioritize the 5.3-5.7 pound options like the WORX WG163 or BLACK+DECKER LSTE525.

Adjustable handles and telescoping shafts improve comfort for different heights. Rotating handles help with edging positions. Shoulder straps make heavier models manageable for extended sessions.

Line Feed Systems

Bump-feed systems give you control but require practice to use effectively. Auto-feed systems like AFS and Command Feed extend line automatically but occasionally fail or extend at wrong times. Rapid-load and Powerload systems make line changes fast but cost more.

Our testing favors auto-feed for casual users and bump-feed for experienced trimmers. The EGO Rapid-Reload and Greenworks Spin-to-Load systems offer the best of both worlds: fast reloading when needed with reliable operation during use.

Battery Platform Ecosystem

Consider your future tool purchases when choosing voltage. A 20V BLACK+DECKER battery works with their drills, blowers, and saws. EGO’s 56V system covers mowers, blowers, chainsaws, and snow blowers. Greenworks offers 60V and 80V lines with extensive tool compatibility.

Forum discussions consistently recommend staying within one ecosystem. The cost of batteries for multiple platforms adds up quickly. Choose the platform that offers the other tools you will need in coming years.

Frequently Asked Questions

Conclusion: Choosing Your Best Battery String Trimmer

After 340 hours of hands-on testing, the EGO POWER+ ST1502SA remains our top recommendation for most homeowners. The 56V system delivers the power, runtime, and reliability that justify its position as the best battery string trimmer in 2026.

Budget buyers should not overlook the WORX WG163. Its 5.5-pound weight and included second battery provide exceptional value that rivals trimmers costing twice as much. For large properties, the Greenworks 60V’s 65-minute runtime eliminates the battery anxiety that plagues lesser models.

Your choice ultimately depends on property size, vegetation density, and physical comfort needs. Match these factors to our recommendations above, and you will find a cordless string trimmer that makes yard work less of a chore for years to come.