Battery-powered string trimmers have come a long way in the past few years. I remember when cordless weed eaters were barely powerful enough to trim grass around a mailbox. Now they’re replacing gas trimmers for homeowners and even some landscaping professionals. After spending over 45 days testing 10 of the top models on the market, our team has identified the best battery string trimmers for every yard size and budget, including some of the best battery-powered string trimmers available today.
The shift to lithium-ion battery technology has been dramatic. Modern cordless string trimmers deliver gas-equivalent power without the noise, fumes, or maintenance headaches. You can start trimming at 6 AM without waking your neighbors. No more mixing gas and oil. No more pull cords that never start on the first try. Just press the trigger and go.
This guide covers everything you need to know about choosing the right battery-powered weed eater. We tested cutting power, runtime, ergonomics, and real-world performance in actual yard conditions. Our team compared models from EGO, Greenworks, WORX, Milwaukee, CRAFTSMAN, BLACK+DECKER, and ISPRINTIME across various yard sizes from small urban lots to 2-acre properties.
After extensive testing, these three models stood out from the pack. Each excels in specific use cases that matter most to different types of users.
Here’s our comparison of all 10 battery string trimmers we tested. Each model has been evaluated for real-world performance, not just specs on paper.
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WORX WG163
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BLACK+DECKER LST300
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BLACK+DECKER LST522
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CRAFTSMAN V20
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ISPRINTIME 21V
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EGO ST1511T
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EGO ST1502SA
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Greenworks 60V
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Milwaukee M18
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WORX WG170.2
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12 inch cutting width
7600 RPM motor
5.5 lbs weight
2 batteries included
I spent three weeks using the WORX WG163 as my primary string trimmer, and it consistently impressed me as one of the best battery-powered string trimmers in its price range. The 2-in-1 design switches from trimmer to edger in seconds without any tools. I found this incredibly useful when tidying up along driveways and walkways. The Command Feed spool system is a game changer – just push a button and more line advances. No more bumping the head on the ground or manually feeding line.
The 90° pivoting head lets you trim at angles that would be impossible with most other models. I used this feature extensively around trees and under deck railings. At only 5.5 pounds, you can work for extended periods without arm fatigue. Our tests showed runtime around 25-30 minutes per battery, which is perfect for small to medium yards up to a quarter acre.
The Power Share battery ecosystem is one of WORX’s strongest advantages. The same 20V batteries work with over 75 different WORX tools. If you already own WORX outdoor equipment, you can expand your collection without buying into a new battery platform. With 33k+ reviews and a 4.3-star rating, this is one of the most proven battery trimmers on the market.
Technical performance is solid for the price point. The 7600 RPM motor spins the 0.065-inch line fast enough to cut through most grasses and light weeds. The 12-inch cutting swath is adequate for residential use. Rubberized wheels help guide the edger for straighter lines along sidewalks.
Homeowners with small to medium yards up to 1/4 acre. Anyone who wants a lightweight trimmer that doubles as an edger. People who value versatility and already own WORX 20V tools.
Large lots over 1/2 acre will need multiple batteries. Heavy-duty brush clearing or very thick weeds. Users who need professional-grade power all day.
12 inch steel deck
6200 RPM
5.7 lbs
2.0Ah battery
The BLACK+DECKER LST300 proves you don’t need to spend a fortune to get a capable battery trimmer. I tested this model for two weeks and found it perfectly adequate for typical suburban lawn care. The POWERDRIVE Transmission is the standout feature – it delivers more power from the motor to the cutting string than previous BLACK+DECKER models.
Automatic Feed Spool (AFS) eliminates the frustration of manual line advancement. The system feeds line as needed without any bumping required. This worked flawlessly during my testing, only requiring attention when the spool was completely empty. The 2-in-1 conversion to edger mode is simple and takes just seconds.
Battery life is the main limitation. The included 2.0Ah battery provides 20-30 minutes of runtime, which is fine for small yards but limiting for larger properties. The 5-hour charge time means you’re done for the day if you drain both batteries. Consider buying an additional battery if you have a larger yard.
The 12-inch steel deck provides durability that plastic housings can’t match. At 5.7 pounds, it’s still lightweight enough for comfortable extended use. The adjustable handle and height settings let you customize the fit to your body. I found this particularly helpful when sharing the trimmer with family members of different heights.
Budget-conscious homeowners with small yards under 1/4 acre. First-time battery trimmer buyers. Anyone who needs a reliable backup trimmer for light touch-ups.
Large properties requiring extended runtime. Heavy brush clearing. Users who need quick battery turnaround between sessions.
12 inch cut
2.5Ah extended battery
Dual speed
Built-in wheel
The BLACK+DECKER LST522 stands out with its integrated wheeled edging system. During my testing, the built-in wheel made creating crisp edges along driveways and sidewalks significantly easier than models without this feature. The wheel stabilizes the trimmer and guides it in a straight line, resulting in professional-looking edges with minimal effort.
The extended 2.5Ah battery provides 66% more runtime than standard BLACK+DECKER batteries. I clocked approximately 35-40 minutes of actual cutting time per charge. Dual speed control lets you choose between high power for tough weeds or extended runtime for lighter trimming.
PowerDrive Transmission boosts torque at the cutting string for better performance in dense vegetation. The Automatic Line Advancement system feeds line smoothly without interruption. However, note that this model has been discontinued by the manufacturer. Limited availability is a concern, and replacement parts may become harder to find over time.
Users report excellent durability with some units lasting 7+ years. The 2-year warranty provides peace of mind, but long-term parts availability is uncertain given the discontinued status. At 4.5 stars from 6,300+ reviews, this remains a highly-rated option if you can find it in stock.
Homeowners who prioritize clean edged lines. Users with existing BLACK+DECKER 20V battery collections. People who find edging difficult without wheel support.
Users concerned about buying discontinued products. People who need long-term parts availability. Very large yards requiring multiple batteries.
13 inch cutting width
2 speed settings
Telescoping pole
V20 compatible
CRAFTSMAN enters the battery trimmer market with the V20 CMCST900D1, featuring a wider 13-inch cutting swath than most competitors. That extra inch makes a noticeable difference when covering larger areas. I completed my trimming tasks 15-20% faster compared to 12-inch models during side-by-side testing.
The automatic .065-inch line feed system works reliably without bumping. I appreciated not having to stop and manually advance line during extended trimming sessions. The telescoping pole adjusts easily, making this trimmer suitable for users from 5’4″ up to 6’1″ tall. This adjustability is rare at this price point.
Two speed settings offer flexibility. Low speed extends battery life for light trimming, while high speed provides extra power for tough weeds. However, runtime on high speed is limited to 15-20 minutes with the included 2.0Ah battery. At 6.3 pounds, this is slightly heavier than some competitors, but the weight distribution feels balanced.
V20 battery compatibility is a major advantage if you own other CRAFTSMAN tools. The 3-year warranty is better than most competitors in this price range. VERSATRACK compatibility lets you hang the tool directly on CRAFTSMAN wall organization systems.
Taller users who appreciate the telescoping pole. People with existing CRAFTSMAN V20 tools. Homeowners wanting a wider cutting swath for faster work.
Users needing extended high-speed runtime. People sensitive to tool weight. Very large yards requiring multiple batteries.
9000 RPM motor
12 inch cut
4.23 lbs ultra-light
2 batteries
The ISPRINTIME 21V trimmer is one of the newest entries to the battery string trimmer market, but it’s making waves with its impressive 9000 RPM motor speed. For comparison, most competitors run at 6000-7600 RPM. That extra speed translates to noticeably better cutting performance in thick grass and weeds. I tested this side-by-side with established brands and was impressed by how cleanly it cut through overgrown areas.
At only 4.23 pounds, this is one of the lightest trimmers I’ve ever used. Extended trimming sessions caused virtually no arm fatigue. The auto-feed line system works smoothly without any bumping required. Two 2.0Ah batteries are included, providing 30-40 minutes of total runtime.
The 12-inch cutting path is standard for residential trimmers. Tool-free assembly took less than 5 minutes out of the box. The detachable shaft design makes storage simple in tight spaces. Low-noise operation lets you trim early without disturbing neighbors.
The main concern is the non-standard battery system. These batteries won’t work with tools from other major brands. With only 85 reviews at the time of testing, long-term durability is unproven. However, the 4.8-star rating suggests early adopters are pleased with the performance.
Users wanting the latest technology with high RPM performance. People who prioritize lightweight design. Early adopters comfortable with newer brands.
Users invested in established battery ecosystems. People wanting proven long-term reliability. Professionals needing all-day runtime.
15 inch cutting
POWERLOAD auto winding
Telescopic shaft
45 min runtime
The EGO Power+ ST1511T earns our Editor’s Choice designation for one standout feature: POWERLOAD technology. This patented system automatically winds the trimmer line onto the spool at the push of a button. As someone who has spent countless minutes manually winding trimmer line over the years, this feature alone is worth the price. Just feed the line through the head and press a button – the trimmer does the rest.
The 15-inch cutting swath is wider than most competitors, allowing you to cover more ground with each pass. During my testing, I completed trimming tasks approximately 20% faster compared to 12-inch models. The telescopic aluminum shaft adjusts to your height, improving ergonomics and reducing back strain.
Runtime is excellent at up to 45 minutes on a single charge with the 2.5Ah battery. The high-efficiency brushless motor delivers consistent power throughout the battery cycle. IPX4 weather-resistant construction means you don’t need to worry about morning dew or light rain.
The 56V ARC Lithium battery is compatible with all EGO 56V tools. If you’re invested in the EGO ecosystem, this trimmer integrates perfectly. Variable speed control lets you adjust power to the conditions. Some users have reported battery quality issues, but EGO’s customer service generally resolves these problems.
Homeowners who hate winding trimmer line. People with medium to large yards up to 1/2 acre. Users invested in or considering the EGO 56V ecosystem.
Users wanting the lightest possible trimmer. People on a tight budget. Very small yards where the extra power isn’t needed.
15 inch cut
Rapid-Reload head
Split shaft
50 min runtime
The EGO ST1502SA offers many of the same benefits as our top pick but with a different approach to line loading. Instead of POWERLOAD, this model uses a Rapid-Reload head that allows quick manual line changes. I found this system nearly as convenient as auto-winding once I got used to it. The split shaft design allows for easier storage and transport.
High-efficiency brushless motor delivers longer runtimes and extends motor life. During testing, I consistently achieved 45-50 minutes of runtime per charge. Variable speed control lets you match power to conditions – low speed for light trimming, high speed for tough weeds.
The fan-cooled charging system prevents overheating during battery charging. A full charge takes approximately 50 minutes. EGO backs this trimmer with an impressive 5-year tool warranty and 3-year battery warranty, the best coverage in our test group.
Weight distribution can be an issue for shorter users. The 56V battery is substantial, and some users find the unit feels unbalanced. However, taller users generally don’t report this problem. At 7.4 pounds without the battery, this is reasonably lightweight for a premium trimmer.
Users who value warranty coverage. Taller users who won’t notice balance issues. People who prefer rapid manual line loading over automatic systems.
Shorter users who may find the weight distribution challenging. People wanting automatic line winding. Very budget-conscious buyers.
16 inch swath
60V brushless
65 min runtime
Spin-to-load
The Greenworks 60V ST60L254 is designed for users with serious trimming needs. The 60V brushless motor delivers power equivalent to a 26cc gas trimmer. I tested this on an overgrown property that hadn’t been trimmed in months, and it powered through waist-high weeds without hesitation. The 16-inch cutting swath is the widest in our test group, allowing you to cover substantial ground quickly.
Runtime is exceptional at up to 65 minutes with the 2.5Ah battery. Greenworks claims up to 1.5 acres of coverage per charge, and my testing supports this for moderate cutting conditions. The Spin-to-Load head lets you reload .095-inch line in just 10 seconds without any manual winding.
At 68 decibels, this trimmer is significantly quieter than gas models. You can easily trim early in the morning without noise complaints. The 360-degree rotating handle reduces wrist strain by 40% compared to fixed handles. Greenworks provides a 4-year full warranty covering both tool and battery, second only to EGO.
At 16.27 pounds with the battery, this is one of the heavier models tested. Smaller users may find it tiring for extended use. Some owners have reported string welding issues on the spool, where the line fuses together from heat. However, this appears to affect a minority of users.
Large properties up to 1.5 acres. Users replacing gas trimmers without sacrificing power. People who value extended runtime.
Users wanting a lightweight trimmer. Small yards where this much power isn’t needed. People sensitive to tool weight.
16 inch cut
Brushless motor
Attachment capable
M18 system
The Milwaukee M18 2825-20ST is designed for professional users and serious DIY enthusiasts. This brushless motor generates power comparable to high-voltage platforms, despite running on the familiar 18V M18 system. Variable speed from 0 to 6200 RPM gives you precise control for delicate trimming or full power for heavy brush.
The Easy Load trimmer head makes line changes straightforward. Milwaukee’s attachment capability allows you to use this powerhead with a variety of attachments including edgers, pole saws, and brushes. If you’re already invested in the M18 system, this trimmer integrates seamlessly with your existing batteries and tools.
Be aware that this is sold as a tool-only unit. Battery and charger must be purchased separately, which significantly increases the upfront cost. M18 batteries aren’t cheap, but they offer excellent performance and longevity. At 12.7 pounds without battery, this is a substantial piece of equipment.
The lack of a trigger lock is disappointing for a professional-grade tool. Some users also report that the string advance mechanism can be stiff. However, Milwaukee’s reputation for durability and the extensive M18 ecosystem make this a compelling choice for professionals.
Professionals already using Milwaukee M18 tools. Serious DIY enthusiasts wanting pro-grade equipment. Users needing attachment capability.
Budget-conscious buyers. Users without existing M18 batteries. Casual homeowners with light trimming needs.
3-in-1 design
7600 RPM
5.5 lbs
1 hr charger
The WORX WG170.2 takes versatility to the next level with its 3-in-1 design and earns a place among the best battery-powered string trimmers for small yards. This single tool transforms from a precision string trimmer into a wheeled edger and even a mini-mower for tight spaces. I found the mini-mower mode particularly useful for small patches of grass that are too tight for a full mower.
At only 5.5 pounds, this is one of the lightest trimmers available. Seven handle adjustments and six rotating head settings ensure you can find a comfortable position for any trimming task. Command feed technology lets you add more line with the push of a button – no bumping required.
The 1-hour charger is significantly faster than competitors that take 4-5 hours. Twin rubberized wheels support the edger for straighter lines. The spacer guard protects your plants and landscape features from accidental damage while trimming.
Line durability is the main weakness. The small spools require frequent replacement, and the 0.065-inch line breaks more easily than thicker options. Power is adequate for light trimming but struggles with very thick vegetation. Battery life runs 20-30 minutes per charge, suitable for small yards.
Users wanting maximum versatility in one tool. People with small yards who appreciate lightweight design. Homeowners with flower beds needing careful trimming.
Large properties requiring extended runtime. Heavy-duty clearing work. Users wanting the most durable line system.
Choosing the right battery-powered string trimmer requires understanding several key specifications. Our research across 10 models and hundreds of user reviews revealed the factors that matter most for real-world performance.
Battery voltage directly correlates with power output. Lower voltage models (18V-20V) work well for small yards under 1/4 acre with light grass. Mid-range options (40V-56V) handle medium yards up to 1/2 acre and moderate weeds. High-voltage trimmers (60V-80V) deliver gas-equivalent power for large properties and heavy vegetation. Our forum research shows users consistently recommend going higher voltage if you plan to expand your outdoor tool collection.
Amp hours (Ah) determine how long your battery will last. A 2.0Ah battery typically provides 20-30 minutes of runtime. Step up to 2.5Ah for 30-45 minutes, or 4Ah+ for over an hour of cutting time. Real-world testing shows runtime varies based on cutting conditions. Thick weeds and tall grass drain batteries faster than light trimming. Consider buying two batteries if you have a large yard – you can swap them out to keep working while one charges.
Cutting swath determines how much ground you cover with each pass. Residential trimmers typically offer 12-13 inch swaths. Professional models reach 15-16 inches for faster work. Larger swaths are more efficient but can be harder to control in tight spaces. Line diameter ranges from 0.080 inches for light trimming to 0.095 inches for heavy-duty cutting. Thicker line is more durable but requires more power to spin. Some trimmers accommodate multiple line sizes for versatility.
Weight directly impacts user fatigue during extended use. Most residential trimmers weigh 5-7 pounds. Professional models can reach 12+ pounds. Look for adjustable handles and telescoping shafts to customize the fit to your body. Balance point is equally important – some trimmers feel front-heavy with the battery attached. Test the weight distribution before buying if possible.
The method for loading trimmer line significantly affects user experience. Bump feed requires tapping the head on the ground to advance line. Auto-feed systems dispense line automatically without user intervention. EGO’s POWERLOAD automatically winds line onto the spool. Rapid-Reload heads allow quick manual loading. Spin-to-Load systems let you reload in seconds without winding. Our testing ranked POWERLOAD and Spin-to-Load as the most convenient options.
Consider whether the trimmer uses a battery platform you already own. WORX Power Share, BLACK+DECKER 20V MAX, CRAFTSMAN V20, Milwaukee M18, EGO 56V, and Greenworks 60V all offer extensive tool ecosystems. Using batteries across multiple tools saves money and storage space. Forum users consistently recommend choosing a brand ecosystem and sticking with it for all outdoor power equipment.
Warranty coverage varies significantly among manufacturers. EGO leads with a 5-year tool warranty and 3-year battery coverage. Greenworks offers 4 years on both tool and battery. CRAFTSMAN provides 3 years of protection. BLACK+DECKER and WORX typically offer 2-year warranties. Milwaukee’s professional warranty varies by registration. Longer warranties provide peace of mind, especially for expensive higher-voltage models.
EGO Power+ currently makes the best battery string trimmers for most users. Their POWERLOAD technology eliminates the frustration of manually winding trimmer line. The 56V platform delivers gas-equivalent power with excellent runtime. For budget shoppers, WORX offers great value with the Power Share ecosystem. Greenworks 60V models are ideal for large properties needing extended runtime. Milwaukee M18 is the top choice for professionals already using that platform.
Battery-powered trimmers are absolutely worth it for most residential users. They start instantly without pull cords. Operation is significantly quieter – you can trim early without disturbing neighbors. Zero emissions mean no fumes or gas mixing. Maintenance is minimal compared to gas engines. Modern battery trimmers now match gas performance for typical residential use. The only limitation is runtime for very large properties, but spare batteries solve this issue. Over 5 years, battery trimmers typically cost less to operate than gas models.
Runtime varies by battery capacity and cutting conditions. Small 2.0Ah batteries provide 20-30 minutes of actual trimming time. Medium 2.5Ah batteries deliver 30-45 minutes. Large 4-5Ah batteries can run 60-90 minutes per charge. Heavy vegetation and tall grass reduce runtime by 30-40% compared to light trimming. High-voltage models (60V+) often have more efficient motors that extend runtime. Most users find 2-3 batteries sufficient for residential properties up to 1 acre.
Voltage choice depends on your yard size and cutting needs. 18V-20V trimmers work for small yards under 1/4 acre with light grass. 40V-56V models handle medium yards up to 1/2 acre and moderate weeds. 60V-80V trimmers provide gas-equivalent power for large properties and heavy vegetation. Most users recommend going one voltage level higher than you think you need. Higher voltage also provides better performance if you expand to other outdoor tools like blowers and mowers.
Modern battery trimmers can handle most residential weed cutting tasks. 40V+ models power through waist-high weeds without issues. High-voltage models (60V-80V) match gas trimmer performance for heavy vegetation. Thicker line diameter (0.095 inch) improves cutting ability in dense growth. Dual-speed trimmers let you boost power for tough sections. However, battery trimmers may struggle with woody stems over 1/4 inch diameter. For professional clearing work, gas still has the advantage. Most homeowners find quality battery trimmers fully adequate for their needs.
After 45 days of testing across 10 different models, our team has clear recommendations based on your specific needs. The EGO Power+ ST1511T remains our top overall pick for its revolutionary POWERLOAD technology and excellent balance of power, runtime, and ergonomics. Most homeowners searching for the best battery-powered string trimmers will be thrilled with this trimmer’s performance.
Budget-conscious shoppers should choose the WORX WG163 for outstanding value and versatility. The 2-in-1 design and Command Feed system make trimming and edging effortless. Large property owners will appreciate the Greenworks 60V with its extended runtime and 16-inch cutting swath. Professionals invested in the Milwaukee ecosystem should choose the M18 2825-20ST for attachment capability and pro-grade construction.
The battery revolution in outdoor power equipment is here to stay. Modern cordless string trimmers now match or exceed gas performance for residential use while being quieter, cleaner, and easier to maintain. Choose based on your yard size, battery ecosystem preferences, and budget – you can’t go wrong with any of the models in our top 10 list.
