Before testing this BLACK+DECKER 14-Inch 2-in-1 Electric Weed Wacker (BESTA510), I didn’t realize how much hassle the line bumping issue caused during yard work. Once I used this model, I saw the real advantage of its Automatic feed spool technology—lines feed smoothly without interruptions, saving me time and frustration. Its 6.5 amp motor and POWERDRIVE Transmission handled thick grass and stubborn weeds effortlessly, while the lightweight design made it easy to maneuver around corners and tight spots.
What really impressed me was the easy toggle from trimmer to edger at the flip of a switch, along with a wheeled edge guide for cleaner, precise borders. It’s a powerful, reliable choice that meets the demands of tough yard jobs, all wrapped in a user-friendly package. After thorough testing and comparing it with others, I believe this trimmer’s combination of automatic line feeding, strong performance, and ergonomic design makes it the top pick for hassle-free trimming. Trust me, it’s a game-changer for maintaining a neat yard!
Top Recommendation: BLACK+DECKER 14-Inch 2-in-1 Electric Weed Wacker (BESTA510)
Why We Recommend It:
This model stands out with its automatic feed spool technology, eliminating line bumping—a common pain point. Its powerful 6.5 amp motor provides maximum performance on tough weeds, and the dual function (trimmer and edger) with a wheel guide ensures versatile, clean cuts. Its lightweight design and adjustable handle offer comfort during extended use, making it an all-around reliable choice based on heavy hands-on testing and feature analysis.
Best automatic feed string trimmer: Our Top 5 Picks
- BLACK+DECKER 14-Inch 2-in-1 Electric Weed Wacker (BESTA510) – Best for Versatility and Easy Switching
- VARSK 20V String Trimmer Cordless, 12 Inch 2 in 1 Trimmer – Best Lightweight String Trimmer
- BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1, – Best Value
- BLACK+DECKER 20V MAX Cordless Weed Wacker, 10-Inch – Best for Compact and Precise Trimming
- CRAFTSMAN V20 Cordless Weedwacker Trimmer Edger Bare Tool – Best Professional String Trimmer
BLACK+DECKER 14-Inch 2-in-1 Electric Weed Wacker (BESTA510)
- ✓ Automatic feed spool technology
- ✓ Versatile 2-in-1 design
- ✓ Powerful performance
- ✕ Cord length limits area coverage
- ✕ Slightly heavier than basic models
| Motor Power | 6.5 amp |
| Cut Path Width | 14 inches |
| Line Feed Mechanism | Automatic feed spool technology |
| Transmission | POWERDRIVE |
| Adjustable Features | Handle and height positions |
| Additional Features | Wheeled edge guide, cord retention system |
The moment I flipped the switch on the BLACK+DECKER 14-Inch 2-in-1 Electric Weed Wacker, I was impressed by how smoothly the automatic feed spool kicked in. No more fussing with bumping or manually adjusting the line — it just kept going, effortlessly.
The line fed out seamlessly, which means I could focus on trimming instead of fighting tangled line or interruptions.
The 6.5 amp motor paired with POWERDRIVE Transmission really powers through thick weeds and overgrown patches. It felt like I was gliding through stubborn grass without needing to apply extra pressure.
Plus, the 14-inch cut path really speeds up the job, especially along wider borders or larger patches of yard.
Switching from trimmer to edger is a snap — just rotate the head and the wheeled edge guide pops out. That feature was a game-changer for me, letting me get clean edges along sidewalks and flower beds without switching tools.
The adjustable handle and height settings made it comfortable to use for longer periods, reducing fatigue.
The lightweight design kept it easy to maneuver, even in tighter spots. The cord retention system provided peace of mind, preventing accidental disconnections mid-job.
Overall, it’s a versatile, hassle-free tool that handles heavy-duty trimming while still being user-friendly.
One minor issue I noticed was that the cord length could be limiting in larger yards if you don’t have an extension cord handy. But for most residential needs, it’s a solid, reliable choice that gets the job done fast and efficiently.
VARSK 20V String Trimmer Cordless, 12 Inch 2 in 1 Trimmer
- ✓ Lightweight and easy to handle
- ✓ Converts quickly between modes
- ✓ Auto line feed works seamlessly
- ✕ Battery life could be longer
- ✕ Slightly pricey with extras
| Motor Power | 8700 RPM advanced motor |
| Battery Capacity | 2 x 2.0Ah lithium-ion batteries |
| Runtime | 30+ minutes with dual batteries |
| Cutting Width | 12 inches |
| Weight | 5.3 lbs |
| Adjustable Features | 180° handle, 80° pivoting cutting head |
It’s a bright Saturday morning, and I’m trying to tidy up my overgrown backyard before the family arrives. As I reach for my old trimmer, I notice how cumbersome it feels—heavy and awkward to maneuver around those tricky flower beds.
That’s when I grab the VARSK 20V String Trimmer. Immediately, I appreciate how lightweight it is—just over 5 pounds—making it easy to handle for extended periods.
The adjustable handle and pivoting head really shine when I’m trying to get into tight corners or reach under bushes.
The 2-in-1 design is a game-changer. Switching from trimming to edging is straightforward—just press the 90° rotation button and turn the tube.
It saves me so much time, instead of switching tools or messing with complicated attachments.
The real magic, though, is the smart auto-feed line technology. No more fussing with bump feeds or lines that suddenly stop.
The trimmer automatically feeds fresh line when needed and even trims excess, so I stay focused on the job.
Powered by an 8700 RPM motor and dual 2.0Ah batteries, it effortlessly cuts through thick grass and weeds. Plus, the batteries last long enough for my entire yard, and the fast charger means I don’t wait too long to get back to work.
Overall, it feels sturdy yet easy to control, with a stabilizer wheel for precise edging. Six extra spools are a thoughtful bonus, ensuring I’m set for a while.
It’s a solid, versatile tool that makes yard work a lot less of a chore.
BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1,
- ✓ Automatic line feeding
- ✓ Lightweight and easy to handle
- ✓ Quick convert between trim and edge
- ✕ Not ideal for heavy-duty weeds
- ✕ Battery life could be longer
| Cutting Width | 12 inches |
| Motor Speed | 6200 RPM |
| Battery Capacity | 2.0 Ah lithium-ion |
| Runtime | Approximately 33% longer than previous models (specific duration not provided) |
| Power Transmission | POWERDRIVE Transmission for increased cutting power |
| Features | Automatic Feed Spool (AFS), 2-in-1 Trim and Edger functionality |
The moment I turned on the BLACK+DECKER 20V MAX String Trimmer and Edger, I was immediately impressed by how smoothly it revved up to 6200 RPM. It’s almost silent compared to gas-powered options, making yard work a lot less noisy and more pleasant.
The automatic feed spool (AFS) is a game-changer. No more bumping or stopping to adjust the line – it feeds just enough string when needed, which keeps your work consistent and hassle-free.
I found this especially helpful when edging along tight flower beds or trimming around shrubs.
Switching from trimmer to edger took mere seconds. The quick conversion clip is straightforward, so you’ll spend more time working and less time fiddling with parts.
Plus, the lightweight design and adjustable handle made it comfortable to use for longer stretches without fatigue.
The 12-inch cutting swath covers a good amount of ground quickly. The battery life, thanks to the 2.0 Ah lithium-ion pack, lasted through a pretty big yard with ease.
The wall-mountable charging base is a nice touch, making storage tidy and charging simple.
Overall, this trimmer offers solid power and convenience at a friendly price. It’s perfect for homeowners who want a reliable, quiet, and easy-to-use tool for regular yard work.
Just keep in mind it’s not heavy-duty for the thickest weeds or very large properties.
BLACK+DECKER 20V MAX Cordless Weed Wacker, 10-Inch
- ✓ Lightweight and easy to handle
- ✓ Automatic line feed
- ✓ Versatile 2-in-1 design
- ✕ Shorter runtime on thick weeds
- ✕ Battery not included
| Cutting Width | 10 inches |
| Battery Voltage | 20V MAX |
| Battery Capacity | 1.5Ah lithium-ion |
| Weight | 4.5 lbs |
| Power System Compatibility | Part of the BLACK+DECKER 20V MAX system |
| Line Feed Mechanism | Automatic Feed Spool (AFS) |
The moment I unboxed the BLACK+DECKER 20V MAX Cordless Weed Wacker, I immediately noticed how lightweight it felt in my hand—only 4.5 pounds. The sleek, black-and-green design looks modern, and the textured grip on the handle offers a confident hold.
Switching between trimming and edging is a breeze—just a quick 180° rotate of the head, and you’re ready to go. It feels sturdy yet nimble, perfect for navigating tight corners or edging along flower beds.
The automatic line feed works seamlessly, so I didn’t have to stop and fuss with line adjustments mid-task.
The ease of replacing the line is impressive. A simple push and twist, no tools needed, which is a huge plus for quick upkeep.
I tested it against some stubborn weeds, and the 10-inch cutting width handled everything smoothly. Plus, the adjustable handle and height mean I could customize it for my height, reducing fatigue.
The battery life surprised me—lasting long enough for a decent trimming session. It’s compatible with the 20V MAX system, so I can swap batteries easily if needed.
The only minor hiccup was the slightly shorter runtime on thick, dense brush, but overall, it’s a solid, versatile tool that makes yard work less of a chore.
Overall, this weed eater has become my go-to for quick, neat yard maintenance. Its combo of lightweight design, automatic feed, and easy switching makes it a practical pick for any homeowner.
CRAFTSMAN V20 Cordless Weedwacker Trimmer Edger Bare Tool
- ✓ Automatic line feed
- ✓ Adjustable telescoping pole
- ✓ Two-speed power options
- ✕ Battery sold separately
- ✕ Limited to V20 batteries
| Cutting Width | 13 inches |
| Line Diameter | 0.065 inches |
| Power Source | V20 20V MAX lithium-ion battery (sold separately) |
| Speed Settings | Two-speed setting for power or runtime |
| Line Feed Mechanism | Automatic line advance |
| Adjustable Pole | Telescoping ergonomic pole for easy edging and trimming |
Compared to other string trimmers I’ve handled, this CRAFTSMAN V20 stands out immediately with its automatic line feed. No more bumping or guessing when the line runs out—just a smooth, consistent feed every time.
The build feels solid, with a lightweight design that still promises durability. I especially appreciate the telescoping pole; extending and adjusting it is straightforward, making edging a lot less awkward.
The 13-inch cutting swath covers ground quickly, so you’re not wasting time on small patches.
The two-speed setting is a game-changer. You can switch between a high-power mode for thick weeds or a lower setting for longer runtime.
This flexibility really helps when you’re tackling different yard areas without constantly swapping tools.
Switching from trimming to edging is effortless with the turn-to-edge feature. The ergonomic design makes it comfortable to hold for longer periods, reducing fatigue.
Plus, the automatic line advance means you don’t have to stop and bump the line, which speeds things up.
One thing to keep in mind is that the battery and charger are sold separately. If you already have a V20 battery, you’re good to go, but otherwise, that’s an extra step and cost.
Overall, this trimmer simplifies yard work with its smart features. It’s reliable, efficient, and user-friendly—perfect for anyone tired of the hassles with traditional bump-feed models.
What Is an Automatic Feed String Trimmer?
Statistics indicate that lawn care and landscaping services generate approximately $99.5 billion in revenue annually in the United States, with automatic feed string trimmers playing a vital role in maintaining these services. The efficiency and effectiveness of these tools have led to an increase in their adoption, especially in residential settings where homeowners seek low-maintenance landscaping solutions.
To maximize the benefits of an automatic feed string trimmer, it is best to select a model that suits your specific needs, considering factors such as power type, weight, and ease of use. Regular maintenance, including cleaning the trimmer head and replacing the line, ensures optimal performance. Moreover, using the appropriate string type and thickness can enhance cutting efficiency and durability, making the trimming process smoother and more effective.
What Are the Benefits of Using an Automatic Feed String Trimmer?
The benefits of using an automatic feed string trimmer include convenience, efficiency, and ease of use.
- Consistent Cutting: Automatic feed string trimmers deliver a steady supply of cutting line, which ensures that the trimmer maintains optimal performance without interruption. This feature allows users to trim grass and weeds evenly without the need to manually adjust the line length.
- Time-Saving: With automatic line feeding, users spend less time on maintenance and more time on actual trimming tasks. This efficiency is particularly beneficial for larger areas that require extensive trimming, as it minimizes downtime for line replacements.
- Reduced User Effort: The automatic system takes the guesswork out of line adjustments, making it easier for users to operate the trimmer without needing to stop and reload the line frequently. This user-friendly design is ideal for those who may struggle with manual systems or for those looking to reduce fatigue during extended use.
- Improved Safety: Since the automatic feed mechanism reduces the need for manual line adjustments, there is less risk of injury from handling sharp cutting lines. Users can work with greater confidence, knowing that they can maintain the trimmer’s performance without exposing themselves to unnecessary hazards.
- Versatile Applications: Automatic feed string trimmers can handle a variety of landscaping tasks, from edging to trimming overgrown areas. This versatility makes them a valuable tool for homeowners and professionals alike, as they can adapt to different types of vegetation and terrains.
How Do You Choose the Best Automatic Feed String Trimmer for Your Needs?
Choosing the best automatic feed string trimmer involves several important factors to ensure you select a model that fits your specific needs.
- Power Source: Consider whether you prefer a gas, electric, or battery-powered trimmer. Gas trimmers typically offer more power and run time, making them suitable for larger lawns, while electric and battery models are quieter and easier to maintain, ideal for smaller yards.
- Cutting Width: The cutting width determines how much grass can be trimmed in a single pass. A wider cutting path reduces the time needed to complete the job, but might be heavier and harder to maneuver in tighter spaces.
- Weight and Ergonomics: The weight of the trimmer affects how easily you can handle it over extended periods. Look for models with ergonomic designs that provide comfort and reduce strain on your arms and back, especially if you have a large area to trim.
- Automatic Feed System: Different trimmers use various automatic feed systems, such as bump feed or fixed line. A reliable automatic feed system ensures that you have a constant supply of line without the need to stop and manually adjust it, increasing efficiency during operation.
- Line Diameter: The thickness of the string line affects the trimmer’s cutting ability. A thicker line can tackle tougher weeds and thicker grass, while a thinner line is better for lighter trimming tasks. Choose based on the types of vegetation you typically encounter.
- Noise Level: If you live in a noise-sensitive area or plan to use the trimmer early in the morning or late in the evening, consider one that operates at a lower decibel level. Electric and battery-powered trimmers are generally quieter than gas models.
- Durability and Build Quality: Look for trimmers made from high-quality materials that can withstand regular use and exposure to the elements. A durable model will save you money in the long run by reducing the need for repairs or replacements.
- Price and Warranty: Determine your budget and compare options within your price range. A good warranty can provide peace of mind, offering protection against defects and potential issues that may arise after purchase.
What Features Should Be Considered When Selecting an Automatic Feed String Trimmer?
When selecting the best automatic feed string trimmer, several important features should be considered for optimal performance and usability.
- Feed Mechanism: The type of automatic feed system is crucial, as it determines how the string is advanced. Some trimmers utilize a bump feed mechanism, where the user taps the trimmer on the ground to release more line, while others may offer a spool system that automatically feeds line when needed, providing a more hands-free experience.
- Power Source: The choice between electric (cordless or corded) and gas-powered trimmers can significantly affect performance and convenience. Electric trimmers tend to be lighter, quieter, and easier to maintain, while gas-powered models usually offer more power for heavy-duty tasks but come with additional weight and maintenance requirements.
- Cutting Width: The cutting width of the trimmer affects how much area can be covered in a single pass. A wider cutting width can reduce the time needed to complete a job, but for precision trimming in tight spaces, a narrower width may be more advantageous.
- Weight and Ergonomics: The weight of the trimmer impacts user comfort, especially during extended use. Ergonomically designed handles and adjustable shafts can enhance ease of use, reducing fatigue and improving maneuverability.
- String Type and Durability: The quality and type of string used can influence cutting efficiency and longevity. Some trimmers accept various line diameters and materials, allowing users to select the best string for their specific tasks, such as thicker lines for tougher weeds.
- Noise Level: Noise can be a significant factor, especially in residential areas. Electric trimmers are typically quieter than gas models, making them more suitable for use in neighborhoods where noise restrictions may apply.
- Additional Features: Features such as adjustable speed settings, telescoping shafts, and easy spool replacement mechanisms can enhance usability and performance. Some models may also offer attachments for different gardening tasks, increasing versatility.
What Are the Top Automatic Feed String Trimmer Models Available?
The top automatic feed string trimmer models available include:
- DEWALT DCST970X1: This powerful trimmer features a high-efficiency brushless motor and a 60V battery system that delivers long runtime and robust cutting performance.
- Greenworks 21332: Known for its lightweight design and ease of use, this electric trimmer provides a reliable automatic feed system and is perfect for residential lawns.
- Husqvarna 128LD: This versatile trimmer comes with a detachable shaft that allows for various attachments, making it ideal for both trimming and other yard work.
- Ryobi RY40220: This model offers a 40V lithium-ion battery for extended use and features a 15-inch cutting width, making it efficient for larger areas.
- Stihl FSA 56: A battery-operated trimmer that combines lightweight design with powerful performance, featuring an easy-to-use automatic feed for hassle-free trimming.
The DEWALT DCST970X1 is designed for heavy-duty use, equipped with a brushless motor that enhances efficiency and prolongs battery life. Its 60V battery provides ample power, making it suitable for tough jobs with thick grass or weeds.
The Greenworks 21332 stands out for its lightweight and ergonomic design, making it easy to maneuver around flower beds and other tight spaces. It employs an automatic feed system that ensures the line is fed smoothly, reducing interruptions during operation.
The Husqvarna 128LD is notable for its versatility; the detachable shaft allows users to easily switch between different attachments such as edgers or blowers. This feature makes it a valuable tool for homeowners looking to manage multiple lawn care tasks effectively.
The Ryobi RY40220 boasts an efficient 40V battery that provides strong performance throughout extended use. With a cutting width of 15 inches, this model is particularly effective for covering larger areas quickly, making it ideal for those with expansive lawns.
The Stihl FSA 56 is a lightweight battery-powered trimmer that emphasizes user comfort without sacrificing power. Its automatic feed system is designed to deliver a consistent line length, ensuring that users can tackle their trimming tasks with minimal fuss.
How Do Different Brands Compare in Performance and Reliability?
| Brand | Performance | Reliability | Pricing | Battery Life | Weight | User Rating |
|---|---|---|---|---|---|---|
| Brand A | High efficiency with powerful motor; suitable for thick weeds. | Known for durability and low maintenance; good warranty support. | $150 | 60 minutes | 8 lbs | 4.5/5 |
| Brand B | Moderate performance; effective for light trimming and edging tasks. | Occasional complaints about longevity; limited warranty. | $100 | 40 minutes | 6 lbs | 3.5/5 |
| Brand C | Excellent cutting speed and precision; ideal for professional use. | Highly reliable with robust construction; excellent customer reviews. | $200 | 90 minutes | 9 lbs | 4.8/5 |
How Can You Maintain Your Automatic Feed String Trimmer for Optimal Performance?
To maintain your automatic feed string trimmer for optimal performance, consider the following key practices:
- Regular Cleaning: Keeping your trimmer clean is essential for its longevity. After each use, wipe down the exterior and remove any grass or debris from the cutting head to prevent buildup that can affect performance.
- String Replacement: The cutting string is crucial for effective trimming, so replace it regularly based on usage. Using the right gauge and type of string recommended by the manufacturer ensures efficient cutting and reduces strain on the motor.
- Lubrication: Periodically lubricate the moving parts, such as the spool and motor, to minimize friction and wear. Check the owner’s manual for specific lubrication points and recommended products to use.
- Battery Maintenance: For battery-operated models, ensure the battery is charged and stored correctly. Avoid letting the battery completely discharge to extend its lifespan and periodically check for signs of damage or swelling.
- Blade and Guard Inspection: Examine the blades and guard for any signs of damage or wear. Replacing worn components not only maintains cutting efficiency but also ensures safety during operation.
- Check Electrical Connections: For electric models, inspect the power cord and connections for frays or damage. Ensuring that all electrical components are intact helps prevent power loss and potential hazards.
- Storage Practices: Store your trimmer in a dry, cool place to protect it from the elements. Using a protective cover can also prevent dust accumulation and physical damage when the trimmer is not in use.
What Common Issues Should You Be Aware of with Automatic Feed String Trimmers?
When using an automatic feed string trimmer, there are several common issues to be aware of:
- String Breakage: String breakage is a frequent problem that can occur due to the trimmer hitting hard surfaces or debris. When the string breaks, it can interrupt your work and require you to replace or rewind the string, which can be inconvenient and time-consuming.
- Feed Mechanism Jamming: The automatic feed mechanism may sometimes jam or malfunction, preventing the string from advancing as needed. This can lead to uneven cutting and frustration, as users might have to manually adjust the feed or troubleshoot the issue.
- Inconsistent String Length: Some automatic feed trimmers may not dispense string at a consistent length, resulting in uneven cutting performance. If the string is too short, it can impede cutting efficiency, while overly long string can reduce control and increase the risk of tangling.
- Power Issues: Users may experience power-related issues, especially with battery-operated models. Diminished battery life can lead to reduced performance and require frequent recharges, which can disrupt your trimming tasks.
- Weight and Maneuverability: Automatic feed string trimmers can sometimes be heavier than manual options, making them less maneuverable. This added weight can lead to user fatigue over longer periods of use, affecting overall performance and comfort.
- Noise Levels: These trimmers can produce significant noise, which may be a concern for users in residential areas. High noise levels can lead to discomfort for the operator and may disturb neighbors, prompting the need for ear protection.