BLACK+DECKER 20V MAX 12 Inch Weed Eater Cordless String Trimmer and Wheeled Edger Lawn Tool with Spool, 2.5Ah Battery and Charger…
Best for
Best lightweight
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Based on 2 trusted sources
Current price
$69.00
Updated Jun 27, 2026 · 1 min read
Sources behind this verdict
10 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, the Black+Decker LST522 is the go-to when light weight matters most. It earns a high 4.5-star Amazon average across more than 6,000 reviews, and high-trust r/lawncare members specifically recommend it 'because of the light weight' for jobs that don't require cutting finger-thick weeds. A Tractor Supply listing calls it lightweight and easy to use with a two-speed motor and adjustable head, and a Facebook group member praises it for seniors.
What reviewers liked
- High 4.5-star average across 6,000+ Amazon reviews
- High-trust r/lawncare owners recommend it specifically for light weight
- Two-speed PowerDrive and an included 2.5Ah battery at a low price
- Praised as easy to handle for seniors and small yards
Where it falls short
- A Walmart verified-purchase summary scores battery life just 2.3/5
- r/homeowners commenter calls it flimsy with fast battery drain
- Community feedback flags poor balance on Black+Decker 20V trimmers
- Underpowered for thick weeds; strictly light-duty
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Across the reviewers we read, the Black+Decker LST522 is the go-to when light weight matters most. It earns a high 4.5-star Amazon average across more than 6,000 reviews, and high-trust r/lawncare members specifically recommend it 'because of the light weight' for jobs that don't require cutting finger-thick weeds. A Tractor Supply listing calls it lightweight and easy to use with a two-speed motor and adjustable head, and a Facebook group member praises it for seniors.
The clear weakness in the signals is battery life: a Walmart verified-purchase summary rates battery life just 2.3 out of 5 even as it scores ease of use and value highly, and an r/homeowners commenter says the battery 'drains very fast' and the tool 'feels pretty flimsy.' An r/Dewalt thread also calls a similar Black+Decker 20V 'horribly balanced.' This is unmistakably a light-duty, small-yard tool.
The consensus: an inexpensive, genuinely light option for small flat lawns and quick touch-ups, accepting short runtime and limited power as the trade-offs.
- Automatic Line Advancement
- The AFS system automatically dispenses trimmer line as you work, delivering uninterrupted performance with your Electric Weed Wacker
- Extended Battery Capacity
- The LBXR2520 battery offers 66% more runtime compared to standard models, ensuring your lawn trimmer keeps going through larger projects
- Dual Speed Control
- Easily switch between higher power for tough areas or longer runtime for extended jobs, optimizing results with this versatile lawn edger
- Enhanced Cutting Power
- PowerDrive Transmission boosts torque at the string, giving your grass edger the strength to tackle dense growth
- Effortless Conversion
- Quickly transform the tool from trimming to wheeled edging for clean lines along sidewalks and driveways
- Adjustable Comfort
- Enjoy customizable height and handle settings with a premium soft grip for improved control and comfort
- Premium Handle Grip
- Micro-texture handle design provides a secure, comfortable grip during use
- 20V MAX System Compatibility
- * Part of the 20V MAX* system, offering flexible power for a wide range of tasks
The tool has plenty of power and I've never had trouble using it to cut away thick weeds or edge the yard. BUT it is horribly balanced, even ...
I like that it can tilt to be an edger and then weed whack just around my house and fence. It's not fancy and sometimes it's a little fickle but ...
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“Black and Decker 20v Battery Grass String Trimmer & Edger” · YouTube
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