10 Best Battery String Trimmers (July 2026) Expert Reviews

If you have been looking for a way to keep your lawn edges clean without the noise, fumes, and maintenance of gas-powered equipment, you are not alone. Battery string trimmers have become the go-to choice for homeowners who want professional results without the hassle. The freedom of wireless cutting combined with modern lithium-ion technology means you can tackle your entire yard on a single charge. Our team spent weeks testing these tools so you can find the best battery string trimmer for your specific needs.

After evaluating over 10 models from brands like EGO, WORX, BLACK+DECKER, Greenworks, and CRAFTSMAN, we have identified the top performers across different price ranges and use cases. Whether you have a small suburban lawn or several acres of varied terrain, there is a battery-powered option that will work for you. In this guide, we break down each product’s strengths, limitations, and real-world performance so you can make an informed decision before purchasing.

Here is our comprehensive ranking of the best battery string trimmers available right now, starting with our top recommendations and finishing with detailed reviews of every model we tested.

Top 3 Picks for Best Battery String Trimmers

Best Battery String Trimmers in 2026

1. WORX Cordless String Trimmer & Lawn Edger WG163 – Best Value Under $100

Our team has been using the WORX WG163 for several months now, and it has become our go-to recommendation for homeowners who want solid performance without spending a fortune. At just 5.5 pounds, this trimmer feels light in your hands even after a full hour of edging along a long driveway. The 12-inch cutting path handles most residential lawn tasks with ease, and we found the automatic line feed system to be surprisingly reliable compared to competitors in this price range.

One feature that stands out is the 90-degree pivoting head. This makes it incredibly easy to switch between flat trimming and reaching under deck edges or other low-clearance spots. We used this capability extensively when trimming around garden beds with uneven slopes, and it saved us from having to awkwardly angle the entire tool. The dual rubberized wheels also make edger mode feel stable and produce clean, professional lines.

The fact that you get two 20V batteries in the box is a significant advantage. Our testing showed that using both batteries together gave us roughly 50 to 60 minutes of continuous trimming. When one battery runs low, you can swap it out while the other charges, which minimizes downtime for smaller yards. The push-button command feed system works exactly as advertised, giving you more line with a simple press rather than the bump-and-hope approach used by older models.

However, there are a couple of limitations worth mentioning. The included charger feels a bit cheap and flimsy compared to the tool itself. Additionally, if you have more than half an acre of heavy weeds or overgrown brush, you will likely find this trimmer underpowered. For standard lawn maintenance on a typical suburban lot, though, the WG163 delivers excellent value.

Battery Runtime and Charging

During our real-world testing across multiple properties, the WG163 consistently delivered 45 to 60 minutes of total runtime when using both batteries. The fast charger takes about an hour to fully replenish a depleted battery, which is reasonable for this voltage class. Keep in mind that thicker vegetation will drain the battery faster, so actual runtime varies based on what you are cutting.

Line Feed and Maintenance

The instant line feed system eliminates the need for bump feeding, which is a welcome convenience. When you need more line, simply press the button and the spool advances automatically. WORX also offers their free spools for life program, which can save money over time if you trim frequently. The 0.065-inch line diameter is standard for this class and provides good balance between cutting ability and line strength.

2. BLACK+DECKER LST300 20V MAX String Trimmer – Budget Pick

The BLACK+DECKER LST300 is the entry point into quality battery-powered trimming, and it makes a strong case for itself with nearly 10,000 customer reviews backing its reliability. We took this trimmer through its paces on a quarter-acre property with mixed grass and light weed growth, and it handled everything we asked of it without complaint. The 6200 RPM motor provides decent cutting power for routine lawn maintenance.

What we appreciate most about this model is how simple it is to operate. There are no complicated settings or adjustments needed. The automatic feed spool advances line as needed, so you can focus on the task rather than fiddling with the tool. Converting between trimmer and edger mode takes just seconds, and the wheeled edger support helps maintain consistent depth along walkways and flower beds.

The main trade-off with this budget-friendly option is battery life. You should expect roughly 20 to 30 minutes of continuous use on a full charge, which is enough for small yards but may require a spare battery for larger properties. The five-hour charger is notably slow, so we recommend planning your trimming sessions around the charging time or investing in an additional battery for larger areas.

At 5.7 pounds, the LST300 is slightly heavier than some competitors, but the weight is well-distributed and did not cause fatigue during our test sessions. The adjustable handle and height settings accommodate different user sizes, which is important if multiple family members will be using the tool. For the price point, this is one of the most reliable options available for light-duty residential use.

Automatic Feed System Performance

The AFS (Automatic Feed Spool) technology BLACK+DECKER uses on this model works better than most bump-feed systems we have tested. Line advancement is consistent and predictable, without the sudden bursts of excess line that can cause tangling or the frustrating situations where no line advances at all. This reliability matters when you are trying to maintain a consistent edge along a long pathway.

Power and Limitations

The 20V MAX system provides adequate power for standard lawn grass and light weeds, but do not expect this trimmer to handle thick, woody growth or dense overgrowth. It is designed for regular maintenance rather than clearing abandoned lots or heavy brush. If your lawn sees mostly routine upkeep, the LST300 will serve you well without breaking your budget.

3. BLACK+DECKER LST522 20V MAX String Trimmer with Dual Speed

The LST522 represents BLACK+DECKER’s step up from the basic LST300, adding features that experienced users will appreciate. The dual speed control is the headline improvement, allowing you to choose between maximum power for tough patches or extended runtime for routine trimming. In our testing, switching between modes made a noticeable difference in both cutting performance and battery consumption.

We were particularly impressed by the wheeled edger attachment. Unlike simple edger guides that require steady hands and practice to use correctly, the wheeled design produces consistently clean edges along sidewalks and driveways. After years of use, professional landscapers report that this edger attachment remains one of the most effective in the battery-powered category.

Several long-term users in our community have reported getting seven years or more of reliable service from this model, which speaks to its durability. The enhanced cutting power compared to the LST300 is noticeable when dealing with thicker grass varieties or light brush. The improved battery capacity provides approximately 66 percent more runtime than older BLACK+DECKER models, which translates to roughly 40 to 50 minutes of real-world use.

The main concern we have is the potential for switch failure after extended use. A few users reported issues with the mode selector becoming intermittent after heavy use, though this appears to be an exception rather than the rule. The two-year warranty provides some protection, but we recommend storing the tool in a dry location to minimize potential moisture damage to electronic components.

Dual Speed Performance

Speed one delivers maximum cutting power for thick weeds and overgrown patches, drawing more current from the battery. Speed two extends runtime significantly for routine trimming tasks where full power is unnecessary. We found that speed two was sufficient for about 80 percent of our typical trimming needs, which meant the battery lasted longer between charges.

Long-Term Reliability

The build quality of the LST522 exceeds expectations for this price range. The motor, spool system, and battery interface all feel solid and well-engineered. BLACK+DECKER’s 20V MAX battery platform is widely available, so finding replacement batteries or expand your collection of tools is straightforward and cost-effective.

4. Greenworks 40V 12-Inch Cordless String Trimmer – Best Value 40V Option

Greenworks has been making significant inroads in the battery-powered outdoor equipment market, and their 40V trimmer demonstrates why. This model delivers cutting power that rivals trimmers costing considerably more, making it an excellent choice for homeowners who need more muscle than entry-level 20V models can provide. The 7500 RPM motor rating is impressive for this voltage class and translates to real cutting performance.

We tested this trimmer on a property with mixed vegetation including thick bermuda grass and patches of wild Johnson’s grass. The Greenworks handled both without bogging down or requiring multiple passes. The dual-line cutting head provides a wider effective cutting path than single-line models, which means faster completion times for larger areas. After several months of regular use, the auto feed system continues to work reliably.

The three-year warranty is one of the best in this category and provides peace of mind for buyers concerned about long-term reliability. Greenworks has been building their battery ecosystem for years, so finding additional tools compatible with the same battery platform is straightforward if you want to expand your collection of yard equipment without accumulating multiple charger types.

At 12 pounds, this is heavier than some competitors, and the weight is concentrated toward the cutting head. This can lead to fatigue during extended sessions, especially for smaller users. We recommend using the shoulder strap attachment if you have more than a few hundred feet of trimming to do. The variable speed trigger also requires some adjustment time before it feels natural.

Auto Feed System

Understanding how the auto feed system works is important for getting the best results. Some users complain about the line advancement, but our testing showed that following the instructions carefully produces reliable performance. The key is ensuring the line is properly seated and not overlapped on the spool, which can cause jams or inconsistent feeding.

Value Analysis

When you compare the Greenworks 40V to competitors at similar price points, it offers more motor power and a longer warranty. The battery capacity is sufficient for properties up to half an acre with mixed vegetation, making this a solid mid-range option that bridges the gap between entry-level consumer models and premium professional-grade equipment.

5. BLACK+DECKER LST136 40V MAX String Trimmer – High Performance with Telescoping Pole

The LST136 sits at the higher end of BLACK+DECKER’s consumer lineup, and it shows in the feature set. The 40V MAX battery provides substantially more power than the 20V models, and the 8500 RPM motor rating is among the highest in this comparison. The PowerCommand Dial with six distinct power levels is genuinely useful, letting you match performance precisely to the task at hand.

We found the adjustable telescoping pole to be one of the most practical features for multi-person households. Different family members can quickly set their preferred length, which improves comfort and cutting accuracy. The soft-grip handle reduces vibration fatigue during extended sessions, and the overall balance feels natural even after an hour of continuous use.

The battery indicator is a small but meaningful addition that removes the guesswork from monitoring remaining charge. You can see exactly how much power remains before heading out for a trimming session, which helps plan your work and avoid the frustration of the tool dying mid-job. The fast charger brings the battery to full capacity in about two hours, which is competitive with other brands in this voltage class.

The main drawbacks are the single-line design and weight. Some users accustomed to dual-line heads may notice a difference in cutting efficiency, though BLACK+DECKER’s line advancement system compensates somewhat. At 7.8 pounds, this is one of the heavier options we tested, and smaller operators may experience fatigue more quickly than with lighter alternatives.

PowerCommand Dial Experience

Having six distinct power levels available lets you optimize the trimmer for nearly any situation. Lower settings extend battery life dramatically for light trimming work, while maximum power tackles thick weeds and overgrown areas effectively. The transitions between settings are smooth and immediate, which we appreciated when moving between different vegetation types within the same property.

Edger Conversion

Converting to edger mode takes just seconds, and the fixed flip flower guard does an excellent job protecting nearby plants. The wheeled support provides stability and helps maintain consistent cutting depth along hard surfaces. For properties with extensive paved edges, this feature alone justifies the step up from entry-level models.

6. CRAFTSMAN V20 Weed Wacker String Trimmer – Quiet Operation with Ergonomic Design

CRAFTSMAN brings its reputation for rugged tools to the battery-powered trimmer market with the V20 system. This model emphasizes quiet operation without sacrificing cutting performance, making it ideal for residential areas where noise restrictions might limit gas-powered equipment use. We measured sound levels during testing and found it significantly quieter than comparable gas models while maintaining competitive cutting power.

The automatic line advance system on this model is one of the most reliable we have tested. Line feeds consistently when you need it and never jams or over-advances unexpectedly. This dependability matters when you are working along long fence lines or around complex landscaping features where you need to maintain focus on the task rather than troubleshooting equipment.

The ergonomic telescoping pole accommodates users of different heights, and the overall balance feels natural despite the battery weight being positioned toward the top. Two speed settings let you choose between maximum power for tough patches or reduced power for extended runtime during routine maintenance sessions.

One minor frustration is the run button, which requires a fairly firm grip to keep the tool running. This takes some getting used to, and users with weaker grip strength may find it uncomfortable during longer sessions. The handle design also skews toward larger hands, so those with smaller grips may want to test this model in person before purchasing.

V20 Battery Ecosystem

CRAFTSMAN’s V20 platform includes a wide range of outdoor and power tools, which makes expanding your equipment collection straightforward. The same batteries that power this trimmer work with drills, saws, blowers, and other tools in the lineup, reducing the total number of chargers and batteries you need to maintain.

Runtime Considerations

Plan on roughly 20 to 30 minutes of continuous runtime from the included 2.0Ah battery. For typical suburban properties, this is usually sufficient for a single trimming session. If you have more than a quarter acre of vegetation to maintain, investing in a spare battery will eliminate waiting time for recharging.

7. EGO POWER+ ST1502SA String Trimmer – Best for Large Yards

The EGO ST1502SA is the number one best seller in Amazon’s String Trimmers category, and after our thorough testing, we understand why. This trimmer delivers power that genuinely rivals gas-powered equipment, making it a credible replacement for anyone considering abandoning fossil fuels for their lawn care routine. The brushless motor provides excellent efficiency while maintaining high performance across a variety of vegetation types.

The 15-inch cutting swath is notably wider than most competitors, which translates to faster completion times for larger properties. Combined with the exceptional battery life of 45 to 60 minutes per charge, this trimmer can handle properties of an acre or more on a single battery charge. The Rapid-Reload head makes string changes quick and frustration-free, addressing one of the most common pain points with string trimmers.

We appreciate the weather-resistant construction, which means you can use this trimmer in damp conditions without worrying about moisture damage to the electronics. The split shaft design makes transportation and storage more convenient, and it also allows for future expansion with other EGO attachments if you want to add a pole saw or other extensions to your toolkit.

The five-year tool warranty is among the best available and reflects EGO’s confidence in their build quality. The included 2.5Ah battery provides substantial runtime, though the charger takes around 90 minutes to fully replenish it. Plan your sessions accordingly, or invest in a second battery for uninterrupted work on larger properties.

Gas-Level Performance

The power output from the 56V system genuinely compares to gas-powered alternatives in this class. We tested it against a comparable gas trimmer on thick overgrowth and could not notice a meaningful difference in cutting speed or ability. For users making the switch from gas equipment, this EGO model provides a natural transition without compromising on performance.

Rapid-Reload Head System

EGO’s Rapid-Reload technology addresses one of the biggest frustrations with string trimmers. Rather than struggling with complicated spool replacement or dealing with tangles, you can reload line in seconds. This is not an exaggeration; we timed the reload process at under 30 seconds once we had the technique down, which is dramatically faster than most competitors.

8. EGO POWER+ ST1623T String Trimmer – Editor’s Choice with LINE IQ

The EGO ST1623T represents the current pinnacle of battery-powered string trimmer technology. This premium model incorporates EGO’s most advanced features, including LINE IQ auto-sensing line feed and POWERLOAD push-button line winding. If you want the absolute best battery trimmer available regardless of price, this is the model that delivers. The difference in convenience and capability compared to basic models is substantial.

The 16-inch cutting swath is the widest in this comparison and dramatically reduces the time required to cover large areas. Combined with the 4.0Ah battery included in this kit, you get up to 60 minutes of continuous runtime. The telescoping carbon fiber shaft adjusts to your height and collapses for compact storage, addressing both comfort during use and convenience in your garage or shed.

LINE IQ technology monitors line length and automatically advances more when needed, eliminating both the frustration of running out of line mid-cut and the inefficiency of excess line tangling. During our testing, the system worked remarkably well, providing consistent cutting performance without any intervention required from the operator. The push-button POWERLOAD system makes string replacement almost effortless.

The build quality of this premium trimmer is immediately apparent when you pick it up. Every component feels solid and precisely engineered. The weather-resistant construction maintains reliability in damp conditions, and the digital two-speed selector provides intuitive control over power versus runtime trade-offs. This trimmer is designed for serious users who demand the best performance and are willing to invest accordingly.

Carbon Fiber Shaft Benefits

The telescoping carbon fiber shaft on this model provides an exceptional combination of strength and light weight. The lifetime warranty on the shaft itself speaks to EGO’s confidence in the material quality. Adjustment is smooth and secure, staying locked in place once you find your preferred setting. For taller users, this model accommodates comfortably where others might feel cramped.

Professional-Grade Results

Whether you are a homeowner maintaining an estate-quality lawn or a professional landscaper serving clients, this trimmer delivers professional-grade results. The cutting power, line consistency, and build quality all meet or exceed what we have experienced with gas-powered professional models. The transition to battery power has never been more convincing than with this flagship EGO trimmer.

9. WORX Cordless String Trimmer & Lawn Edger WG170.2 – 3-in-1 Versatility

The WORX WG170.2 brings versatile 3-in-1 functionality to the battery-powered trimmer market at a mid-range price point. This model can operate as a string trimmer, an in-line wheeled edger, and a mini-mower, which means one tool handles three distinct lawn care tasks. For homeowners with limited storage space or budget, this versatility provides meaningful value without requiring multiple purchases.

The 90-degree pivoting head offers exceptional maneuverability for edging along curved pathways, around trees, and under low structures like decks or pergolas. Seven handle adjustments and six rotating head settings mean this trimmer can be configured to match nearly any user’s preferences or the specific requirements of different areas in your yard. This customization level is unusual in this price class.

At just 5.5 pounds, this is one of the lightest trimmers we tested, which makes a significant difference during extended sessions. The lightweight design reduces fatigue and allows for more precise control, particularly when working around delicate plants or landscaping features. The Power Share compatibility with WORX’s ecosystem of over 75 tools means existing customers can share batteries and chargers across multiple devices.

The main trade-offs are line durability and battery runtime. The line feed system requires more frequent button presses than some competitors, and the small spools mean you will be replacing line more often than with models that use larger capacities. Battery life of around 30 minutes is adequate for small yards but may require a second battery for larger properties.

Three-in-One Functionality

The ability to quickly switch between trimmer, edger, and mini-mower modes expands what you can accomplish without switching tools. The wheeled mini-mower attachment is particularly useful for maintaining areas a regular mower cannot reach, such as narrow strips between landscaping features or around garden installations.

Battery Ecosystem Value

If you already own WORX tools or are considering building a WORX-equipped garage, the shared battery platform adds significant long-term value. The 20V 2.0Ah battery and one-hour charger are compatible with the entire Power Share lineup, reducing the total investment required as you expand your collection of outdoor power equipment.

10. LPSUK 20V Cordless String Trimmer – Budget 3-in-1 with Dual Batteries

The LPSUK 20V trimmer rounds out our comparison as a budget-friendly option that still delivers meaningful functionality. With two 2.0Ah batteries and eight spool lines included in the box, this kit provides excellent value for homeowners who want the flexibility of multiple batteries without the premium price tag. The 8000 RPM motor rating is surprisingly high for this voltage class, though real-world performance falls short of that specification.

We found this trimmer best suited for light to medium maintenance tasks on smaller properties. The 3-in-1 functionality provides trimmer, edger, and mini-mower capabilities that work adequately for basic lawn care needs. The telescopic shaft adjustment accommodates different user heights, and the 60-degree adjustable head provides some flexibility for reaching awkward angles.

Battery life ranges from 15 to 40 minutes depending on vegetation density, which is competitive with other 20V models but still limited for larger properties. The auto line feed system works reasonably well, though we experienced occasional delays when requesting additional line. The included fast charger brings batteries to full capacity in about 80 minutes, which helps minimize downtime between sessions.

The guard and edging components feel somewhat flimsy compared to established brands like EGO or BLACK+DECKER. This affects long-term durability more than immediate functionality, but it is worth considering if you plan to use this trimmer heavily over multiple seasons. The floppiness in edging mode can make achieving clean lines more challenging than with more rigid competitors.

Value Proposition

For the price, this LPSUK trimmer offers meaningful functionality that will satisfy homeowners with basic lawn care needs. The inclusion of two batteries and eight spool lines reduces the initial investment required to get started, and the 3-in-1 capability covers multiple tasks without purchasing separate equipment. If you are on a tight budget or only trim occasionally, this model provides reasonable capability at an accessible price point.

Realistic Expectations

This trimmer performs well within its intended use case of light residential maintenance. Attempting to use it for heavy clearing or on overgrown properties will reveal its limitations. Understanding these constraints upfront leads to satisfaction with the purchase rather than frustration from mismatched expectations.

What to Consider When Buying a Battery String Trimmer

Selecting the right battery string trimmer requires understanding how different specifications and features translate to real-world performance. Here are the key factors our testing revealed as most important for making an informed purchase decision.

Battery Voltage and Capacity

Battery voltage determines the power available to the motor, with higher voltage models providing more cutting ability for thick vegetation. The 20V class handles standard residential lawn maintenance effectively, while 40V and 56V models tackle heavier growth without straining. Capacity measured in amp-hours affects runtime, with larger batteries lasting longer between charges but adding weight to the tool.

Consider your property size and vegetation type when choosing voltage. A quarter-acre lot with maintained grass works well with 20V models, while properties over half an acre with mixed vegetation benefit from 40V or 56V power. The trade-off is weight and cost, so finding the right balance for your specific situation matters more than simply buying the most powerful option available.

Cutting Swath Width

The cutting swath or cutting path diameter determines how much ground you cover with each pass. Standard 12-inch cuts work well for most residential properties, while 13 to 16-inch swaths reduce completion time for larger areas. Wider cuts mean fewer passes required, which can significantly impact total work time on properties over half an acre.

Motor Type

Brushless motors provide better efficiency, longer runtime, and reduced maintenance compared to brushed designs. They also generally last longer and generate less heat during operation. Most premium battery trimmers now use brushless motors, while budget models may still use brushed designs. The efficiency difference translates to meaningful runtime variation between otherwise similar specifications.

Line Feed System

Automatic feed systems eliminate the need for bump feeding and provide more consistent line advancement than manual approaches. Some premium models like EGO’s LINE IQ use auto-sensing technology to advance line only when needed, which reduces waste and maintenance. Push-button systems like EGO’s POWERLOAD make line replacement faster than traditional spool replacement methods.

Weight and Balance

Trimmer weight affects fatigue during extended use, with lighter models being easier to handle for longer sessions. Balance between the cutting head and motor housing also impacts control and user comfort. If possible, handle a trimmer in person before purchasing to assess whether the weight and balance work for your physical capabilities and typical session length.

Battery Ecosystem Compatibility

Many manufacturers design their battery platforms to work across multiple tools. BLACK+DECKER’s 20V MAX, EGO’s 56V system, and CRAFTSMAN’s V20 platform all include various outdoor equipment beyond trimmers. If you anticipate expanding your tool collection, choosing a platform with compatible batteries and chargers across multiple tools reduces overall investment and storage requirements.

Frequently Asked Questions

Conclusion

After extensive testing and analysis of 10 different battery string trimmers, our top recommendation for most homeowners is the EGO POWER+ ST1623T. The combination of LINE IQ auto-sensing line feed, POWERLOAD push-button string loading, 16-inch cutting swath, and 60-minute battery runtime represents the best balance of performance, convenience, and build quality available today. While the premium price point is significant, the long-term value through durability and reduced maintenance makes it worth the investment.

For budget-conscious buyers or those with smaller properties, the WORX WG163 delivers excellent value at under $100 with two batteries included. The EGO ST1502SA remains our pick for large properties where the 15-inch cutting swath and exceptional power reduce completion time significantly. No matter which model you choose from our best battery string trimmers guide, modern battery-powered options provide credible gas-equivalent performance with the convenience and low maintenance that today’s homeowners demand.