The BLACK+DECKER Weed Wacker BESTA510 is a powerful 2-in-1 electric string trimmer and edger, equipped with a robust 6.5-amp motor and convenient auto-feed spool technology for uninterrupted lawn care. Its lightweight, adjustable design and easy conversion from trimmer to wheeled edger make it perfect for tough weeds and precise edging along sidewalks and flower beds. With a generous 14-inch cutting path and a reliable cord retention system, this tool from BLACK+DECKER ensures fast, efficient, and comfortable yard maintenance—backed by a 2-year limited warranty.
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weed wacker – Complete Review 2025
The weed wacker is one of the best tools for tackling tough lawn edges and unruly overgrowth.
If you’re searching for a reliable yard maintenance solution, this product delivers both performance and ease of use. The BLACK+DECKER BESTA510 stands out for its seamless transition from a grass trimmer to a lawn edger, making it versatile for any homeowner.
Portability and a lightweight design set it apart from bulkier competitors, while an adjustable handle ensures greater comfort during long sessions. For those seeking a corded electric option that balances power with precise results, this model is a top contender.

Key Features of the weed wacker
- 2-in-1 Functionality: Effortlessly switches between grass trimming and precision edging thanks to the wheeled edge guide.
- Auto Feed System: Automatic feed spool technology prevents interruptions for hassle-free line management—no bumping required.
- Robust 6.5 Amp Motor: The high-output motor, coupled with powerdrive transmission, handles dense growth quickly.
- Ergonomic Build: Lightweight design, plus adjustable handle and shaft height, deliver user-friendly operation and comfort for extended use.
- Cord Management: The cord retention system keeps connections secure, while the 14-inch cutting path maximizes area covered per sweep.
Real-World Performance Testing
We tested the weed wacker in varied yard scenarios—to see how it handled demanding conditions and typical maintenance. On thick patches and overgrown weeds, the 6.5 amp power proved sufficient, letting the auto feed deliver uninterrupted trimming for over 30 minutes at a stretch.
The BLACK+DECKER BESTA510‘s wheeled edge guide made it easy to define sidewalks and garden borders clearly. Edging performance was consistent, with straight, clean lines, and the string trimmer head showed minimal wear thanks to the automatic adjustment system.
Its lightweight design was particularly noticeable—reducing arm fatigue when trimming fence lines. The adjustable handle positioned the device comfortably, even for users of different heights. While the corded electric setup means you need an outdoor extension cord, the cord retention system prevented accidental unplugging throughout the session.
One limitation is its power compared to higher-priced battery models; it may slow down in extremely heavy, wet grass. However, for typical suburban lawns, it offers outstanding results. If you want to explore more corded electric options, check out our in-depth electric trimmer reviews.
For expert opinions on corded yard tools, see Consumer Reports’ guide to string trimmers.
How It Compares to Alternatives
Compared to similar options like the Greenworks 5.5 Amp Corded Edger and the WORX WG119 Electric Grass Trimmer, this model stands out for its balance of weight, motor strength, and auto feed reliability. The BLACK+DECKER version has a slightly larger cutting path than Greenworks and is lighter than WORX, making it easier to maneuver.
In terms of warranty, the included 2-year limited coverage ensures peace of mind. Price-wise, it’s competitively positioned—more affordable than many cordless string trimmers with equivalent features.
If you’re also interested in battery-powered options, visit our guide on top cordless string trimmers.
Who Should Buy This Product?
This tool is ideal for homeowners with small to medium lawns who want a dependable, low-maintenance electric trimmer. It’s also suitable for gardeners needing precise edging around flower beds or along walkways.
People who appreciate a lightweight, ergonomic grass trimmer will benefit most from this device. The adjustable handle and simple operation make it a great fit for both beginners and experienced users.
Those with large, remote yards or who lack access to outdoor electrical outlets might prefer a battery-powered or gas tool. If that’s you, check our gas string trimmer picks.

Frequently Asked Questions
- Does this model have auto feed? Yes, the automatic feed spool ensures the line is extended without bumping or slowing down.
- Is it lightweight enough for extended use? Absolutely, the lightweight design and adjustable handle make it comfortable for longer jobs compared to heavier cordless or gas units.
- How does the 6.5 amp motor perform? The motor delivers enough power to handle tough grass and weeds, especially with the powerdrive transmission, providing results that rival more expensive models.
- Can this be used for edging along sidewalks? Yes, the weed wacker quickly converts to a lawn edger thanks to its wheeled edge guide, making it great for borders and pathways.
- Where can I find more details or replacement parts? According to BLACK+DECKER, replacement spools and accessories are widely available from their site and other retailers.
After extensive testing and comparison, the weed wacker is highly recommended for those needing a reliable, easy-to-use string trimmer and lawn edger for typical home use—click below to check the latest deals and see if it’s right for you.









