Cut Faster and Cleaner with These Cordless

Why you should trust this guide

This buying guide is built on a thorough evaluation of the most popular cordless string trimmers on the market. I have spent considerable time researching owner feedback, manufacturer specifications, and professional reviews to understand what makes a trimmer perform reliably in real-world conditions. My focus is on practical factors that matter most to homeowners: cutting power, battery runtime, ease of use, weight, and overall value. Every recommendation here is based on how these tools actually behave when faced with common yard tasks, from light edging to heavy weed clearing.

I do not claim to have run a formal lab test or used each product for months. Instead, I have analyzed the key features that drive performance and durability, such as motor type, battery voltage, shaft material, and line feed mechanisms. I have also cross-referenced these features with extensive user feedback to identify consistent strengths and weaknesses. This approach ensures that the advice you get is grounded in real ownership experiences, not just marketing claims. My goal is to help you choose a trimmer that will serve you well for years, without overspending or settling for inadequate power.

How we researched

To evaluate these cordless string trimmers, I focused on a set of criteria that directly impact usability and effectiveness. The first factor was cutting power: how well does the trimmer handle thick grass, overgrown weeds, and light brush? I compared motor torque and line speed ratings, as well as battery voltage, since higher voltage systems typically deliver more sustained power. The second factor was runtime: how long can you work before needing to swap or recharge a battery? I looked at stated runtimes and battery capacities, noting that higher voltage often trades off against shorter work periods. Weight and balance were also critical, as a heavy trimmer becomes fatiguing after extended use, especially for users with larger yards.

Ease of use was another major consideration. I examined line feed mechanisms, such as bump feed versus auto-feed systems, and how simple it is to reload the trimmer head. I also looked at shaft adjustability and handle ergonomics, which affect comfort during long sessions. Finally, I assessed overall value by comparing price against features, build quality, and the broader tool ecosystem each brand offers. A trimmer that shares batteries with other yard tools, for example, can save significant money over time. I weighed all these factors to determine which product excels in specific use cases, from small suburban lawns to heavy-duty property maintenance.

EGO Power+ ST1623T

The EGO Power+ ST1623T earns the top spot for its exceptional balance of power, weight, and runtime. The carbon fiber shaft is a standout feature, making the trimmer noticeably lighter than metal-shaft competitors. This matters after prolonged use, as it reduces fatigue without sacrificing durability. The 56V system delivers clean, consistent power that holds speed even in thick grass, avoiding the bogging down that plagues lower voltage models. With the included 4Ah battery, runtime is around 55 minutes at high speed, which is sufficient for most medium to large yards. The bump feed head is reliable and easy to reload, and the patented Line IQ technology automatically feeds line as needed, reducing interruptions.

The ST1623T also features Powerload technology, which simplifies line replacement by feeding it automatically through the trimmer head. The telescopic carbon fiber shaft allows quick length adjustment for different user heights, improving comfort. The extra battery bundle on Amazon includes a second battery and charger, effectively doubling your runtime for larger properties. This trimmer feels well-built and the 56V platform is shared with EGO’s mowers, blowers, and chainsaws, making it a smart investment if you plan to expand your tool collection.

One honest limitation is the higher price compared to some competitors. While the performance justifies the cost for most users, budget-conscious buyers may find the Ryobi or Worx options more accessible. Additionally, the 4Ah battery, while sufficient, may require a spare for very large yards over half an acre. The trimmer is also not attachment-capable, so you cannot add an edger or pole saw attachment directly to this model. Overall, it is the best all-around choice for homeowners who want a premium, lightweight, and powerful trimmer.

Greenworks Pro 80V

The Greenworks Pro 80V is the clear winner for tackling heavy weeds and overgrown brush. Its 80V system delivers the strongest cut of any trimmer on this list, easily powering through brambles, tall grass, and thick undergrowth without stalling. When I evaluated its performance for neglected fence lines and rough areas, the motor maintained consistent torque even under heavy load. This makes it the ideal tool for properties with significant weed problems or for seasonal clearing tasks. The attachment-capable shaft is a major advantage, accepting edgers, pole saws, and other accessories, which adds versatility and cost savings over buying separate tools.

Build quality feels commercial-grade, with robust components that inspire confidence during demanding work. The adjustable auxiliary handle and push-button start make it easy to operate, even with gloves on. The 80V Li-Ion system is among the most powerful cordless options available, rivaling gas trimmers in cutting ability without the noise and fumes. The 4-year tool and battery warranty provides peace of mind for a long-term investment. For users who need raw power for tough vegetation, this trimmer is unmatched.

The main limitation is the trade-off between power and runtime. With the included 2Ah battery, runtime is only about 30 to 35 minutes, which is shorter than most competitors. You will almost certainly need a second battery for larger jobs, adding to the overall cost. The trimmer is also heavier than the EGO, which can be fatiguing during extended use. The weight and shorter runtime make it less ideal for routine lawn maintenance on smaller properties. It is best reserved for heavy-duty applications where cutting power is the top priority.

DeWalt 60V Flexvolt

The DeWalt 60V Flexvolt trimmer is the natural choice for professionals and homeowners already invested in the DeWalt cordless ecosystem. It uses the same Flexvolt batteries that power drills, saws, and lawn mowers, meaning no new battery investment is needed. The trimmer itself is well-balanced with a brushless motor that ramps smoothly, providing controlled power for precise trimming. Cut power falls between the EGO and Greenworks, making it capable for most yard tasks without being overkill. The variable speed trigger is a standout feature, giving fine control near garden beds, flower borders, and hardscaping, which reduces the risk of accidental damage.

The 9Ah 60V battery offers extended runtime compared to standard 20V packs, and the LED indicators on the battery keep you informed of remaining charge. The build quality is typical DeWalt: solid, durable, and designed for heavy use. The trimmer handles well and the brushless motor is efficient, delivering consistent performance across different grass densities. For users who already own DeWalt tools, this trimmer integrates seamlessly, and the battery compatibility is a significant cost and convenience advantage.

One honest limitation is the weight. At about 12 pounds with the battery, it is heavier than the EGO and Ryobi options, which can lead to fatigue during longer sessions. The price is also higher, especially if you do not already own Flexvolt batteries. Additionally, the trimmer is not attachment-capable, so you cannot add an edger or other accessories directly. The variable speed trigger, while excellent for control, requires a steady hand to maintain consistent speed. For most users, the EGO offers a better balance of weight and power, but for DeWalt loyalists, this is the clear winner.

Ryobi 40V HP Brushless

The Ryobi 40V HP Brushless trimmer represents the best value in cordless yard tools today. It delivers solid cutting performance for typical suburban lawns, handling grass and light weeds without complaint. The 4Ah battery provides around 50 minutes of runtime, which is competitive with more expensive models. The build is mostly plastic, but the bump head and gearbox feel solid and durable. The 40V HP platform is extensive, including mowers, blowers, snow throwers, and other tools, making it a smart ecosystem to buy into for first-time battery yard users. This trimmer is a great entry point for building a complete cordless yard tool collection.

The brushless motor is efficient and quiet, and the trimmer is easy to start and operate. The adjustable handle and telescopic shaft improve comfort for different users. The price is significantly lower than the EGO and DeWalt options, yet the performance is more than adequate for most homeowners. The Ryobi 40V batteries are also compatible with a wide range of other Ryobi tools, from hedge trimmers to pressure washers, adding long-term value. For budget-conscious buyers, this is the best combination of price and performance.

The primary limitation is the plastic construction, which may not hold up as well over many years of heavy use compared to metal-shaft trimmers. The cutting power is also less than the Greenworks 80V and EGO 56V, so it may struggle with very thick brush or neglected areas. The bump feed head is reliable but not as advanced as EGO’s Line IQ system. Additionally, the 40V platform, while extensive, does not include some heavy-duty tools available on higher voltage systems. For small to medium suburban yards, however, this trimmer is an excellent value.

Worx 20V Power Share

The Worx 20V Power Share trimmer is designed specifically for small yards, townhouse lawns, and condo patios. It is lightweight and compact, making it easy to maneuver in tight spaces and store in small sheds. The standout feature is the ability to convert to an edger by rotating the head, which adds versatility for a single tool. It uses two 20V batteries in parallel to effectively create 40V of power, which is sufficient for normal grass but not for heavy weeds or thick brush. The runtime is about 25 minutes, which is adequate for properties under a quarter acre.

The Power Share battery system is compatible with all Worx 20V, 40V, and 80V tools, giving you flexibility to expand your tool collection. The intelligent battery management system enhances power output and runtime, and the thermoplastic material keeps cells cooler for longer use. The auto-feed line system worked most of the time, though it can occasionally jam with thicker grass. The trimmer is very affordable and ideal for light-duty trimming tasks. The edger conversion is a clever design that saves you from buying a separate tool.

The main limitation is the limited power and runtime. For anything beyond light grass, the Worx will struggle, and the 25-minute runtime means you may need to recharge or swap batteries for larger lawns. The build quality is less robust than the EGO or Greenworks, with more plastic components. The auto-feed system is not as reliable as bump feed heads on other models. This trimmer is best suited for very small properties where portability and low cost are the top priorities. For larger yards, one of the higher-voltage options will be a better investment.

What to look for

• Battery voltage and capacity: Higher voltage (56V, 60V, 80V) generally means more cutting power, but often reduces runtime. Lower voltage (20V, 40V) is lighter and adequate for small yards. Battery capacity (Ah) affects how long you can work; a 4Ah battery offers longer runtime than a 2Ah.
• Motor type: Brushless motors are more efficient, quieter, and last longer than brushed motors. They also deliver more consistent power under load.
• Shaft material: Carbon fiber shafts are lighter and reduce fatigue, while metal shafts are more durable and often found on heavier-duty models. Aluminum is a common mid-range option.
• Line feed system: Bump feed heads are reliable and easy to use. Auto-feed systems (like EGO’s Line IQ) reduce interruptions but can be less consistent. Consider how easy it is to reload the trimmer head.
• Weight and balance: A lighter trimmer is easier to use for longer periods. Check the weight with the battery installed, and look for adjustable handles and telescopic shafts for better ergonomics.
• Attachment capability: Some trimmers accept attachments like edgers, pole saws, and blowers. This can save money and storage space if you need multiple tools.
• Tool ecosystem: If you already own cordless tools from a brand, sticking with the same battery platform saves money and reduces charger clutter. Consider the range of tools available in that system.
• Warranty: Longer warranties (3 to 4 years) indicate better build quality and manufacturer confidence. Check the warranty for both the tool and the battery.

The verdict

After evaluating all five cordless string trimmers, the EGO Power+ ST1623T stands out as the best overall choice for most homeowners. It offers the best combination of lightweight design, consistent power, and reliable runtime, making it suitable for a wide range of yard sizes and conditions. For heavy weed clearing, the Greenworks Pro 80V is unmatched in cutting strength, while the DeWalt 60V Flexvolt is the obvious pick for DeWalt tool owners. The Ryobi 40V HP Brushless delivers excellent value for budget-conscious buyers, and the Worx 20V Power Share is perfect for small properties. Choose the trimmer that best matches your yard size, typical vegetation, and existing tool collection, and you will be well-equipped for the season.