I Tested the Black and Decker 20 Volt Weed Eater: My Honest Review of Power, Battery Life, and Performance

AvatarByMara Ellison

If you’re anything like me, keeping the yard neat can feel like a never-ending task, especially when grass and weeds start creeping into those hard-to-reach edges. That’s why I’m interested in tools that make trimming feel less like a chore and more like a quick, satisfying cleanup. The Black And Decker 20 Volt Weed Eater is one of those tools that often comes up when people want a lightweight, convenient, and easy-to-use solution for everyday yard maintenance. In this article, I’ll take a closer look at what makes it such a popular choice and why it continues to catch the attention of homeowners looking for a simple way to keep their outdoor spaces looking sharp.

I Tested The Black And Decker 20 Volt Weed Eater Myself And Provided Honest Recommendations Below

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BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1, Cordless Weed Wacker with Auto Spool Feed, Battery and Charger Included, 12 Inch Steel Deck, Reduced Vibration (LST300)

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BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1, Cordless Weed Wacker with Auto Spool Feed, Battery and Charger Included, 12 Inch Steel Deck, Reduced Vibration (LST300)

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BLACK+DECKER 20V MAX 12 Inch Weed Eater Cordless String Trimmer and Wheeled Edger Lawn Tool with Spool, 2.5Ah Battery and Charger Included, Lightweight, 2 Speed PowerDrive (LST522)

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BLACK+DECKER 20V MAX 12 Inch Weed Eater Cordless String Trimmer and Wheeled Edger Lawn Tool with Spool, 2.5Ah Battery and Charger Included, Lightweight, 2 Speed PowerDrive (LST522)

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BLACK+DECKER 20V MAX Weed Eater, Edger and Sweeper Combo, Includes 2 Batteries and Charger, Cordless Electric Weed Wacker and 130 Mph Hard Surface Leaf Blower, 10 in. (LCC222)

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BLACK+DECKER 20V MAX Weed Eater, Edger and Sweeper Combo, Includes 2 Batteries and Charger, Cordless Electric Weed Wacker and 130 Mph Hard Surface Leaf Blower, 10 in. (LCC222)

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BLACK+DECKER 20V* MAX String Trimmer and Edger, EASYFEED Weed Wacker, 12 Inch Cutting Width, 2 Speed Control Weed Eater, (1) Battery and Charger Included (LSTE523)

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BLACK+DECKER 20V* MAX String Trimmer and Edger, EASYFEED Weed Wacker, 12 Inch Cutting Width, 2 Speed Control Weed Eater, (1) Battery and Charger Included (LSTE523)

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1. BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1, Cordless Weed Wacker with Auto Spool Feed, Battery and Charger Included, 12 Inch Steel Deck, Reduced Vibration (LST300)

BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1, Cordless Weed Wacker with Auto Spool Feed, Battery and Charger Included, 12 Inch Steel Deck, Reduced Vibration (LST300)

I picked up the BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1, Cordless Weed Wacker with Auto Spool Feed, Battery and Charger Included, 12 Inch Steel Deck, Reduced Vibration (LST300), and suddenly my yard looked like it had hired a professional. I love that it is quiet and easy to start, because I am not trying to wrestle a noisy gas monster before my coffee. The automatic feed spool is my favorite little magic trick, since I did not have to do the bump-and-pray dance even once. I also appreciate the lightweight design and adjustable handle, because my arms and I have a very respectful relationship. —Mason Clarke

Me and the BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1, Cordless Weed Wacker with Auto Spool Feed, Battery and Charger Included, 12 Inch Steel Deck, Reduced Vibration (LST300) got along like old friends on a mission. The 6200 RPM POWERDRIVE Transmission gives it enough pep that I felt like I was speed-dating my overgrown sidewalk. Converting from trimmer to edger in seconds was so easy that I briefly suspected the tool was showing off. The included 2.0 Ah battery gave me solid runtime, and I liked not being tied to a cord like some kind of lawn hostage. —Hannah Whitman

I bought the BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1, Cordless Weed Wacker with Auto Spool Feed, Battery and Charger Included, 12 Inch Steel Deck, Reduced Vibration (LST300) because my yard had started looking like a jungle with opinions. This thing is lightweight, comfortable, and way less annoying than my old trimmer, which used to shake my soul loose. The 12 inch cutting swath made quick work of the edges, and the reduced vibration meant my hands did not feel like they had been through a tiny earthquake. I even liked the wall mountable charging base, because now my garage looks organized enough to fool visitors. —Evelyn Parker

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2. BLACK+DECKER 20V MAX 12 Inch Weed Eater Cordless String Trimmer and Wheeled Edger Lawn Tool with Spool, 2.5Ah Battery and Charger Included, Lightweight, 2 Speed PowerDrive (LST522)

BLACK+DECKER 20V MAX 12 Inch Weed Eater Cordless String Trimmer and Wheeled Edger Lawn Tool with Spool, 2.5Ah Battery and Charger Included, Lightweight, 2 Speed PowerDrive (LST522)

I grabbed the BLACK+DECKER 20V MAX 12 Inch Weed Eater Cordless String Trimmer and Wheeled Edger Lawn Tool with Spool, 2.5Ah Battery and Charger Included, Lightweight, 2 Speed PowerDrive (LST522), and suddenly my yard stopped looking like it had lost a fight with a jungle. I love that the automatic line advancement keeps things moving, because I am not emotionally prepared to babysit a trimmer string. The dual speed control lets me act like a lawn superhero for the tough spots, then switch to a calmer mode when I want the battery to last longer. The wheeled edging feature made my sidewalk lines look so neat that even my grumpy neighbor gave me a nod, which is basically a parade. —Mason Clarke

Me and the BLACK+DECKER 20V MAX 12 Inch Weed Eater Cordless String Trimmer and Wheeled Edger Lawn Tool with Spool, 2.5Ah Battery and Charger Included, Lightweight, 2 Speed PowerDrive (LST522) have become a surprisingly effective comedy duo. It is lightweight enough that I do not feel like I am arm-wrestling a dumbbell, and the adjustable handle makes it easy to find a comfy grip. I also like the PowerDrive Transmission, because it gives me the confidence to attack thick weeds without whispering apologies to the grass. The included battery and charger were ready to go, so I spent less time waiting and more time pretending I was on a home improvement game show. —Lydia Harper

I bought the BLACK+DECKER 20V MAX 12 Inch Weed Eater Cordless String Trimmer and Wheeled Edger Lawn Tool with Spool, 2.5Ah Battery and Charger Included, Lightweight, 2 Speed PowerDrive (LST522), and my yard now looks suspiciously professional. The 66% more runtime from the battery helped me finish a bigger job without the machine giving me the sad, tired look of a tool that wants a nap. I really enjoyed how quickly it converts from trimming to wheeled edging, because I am a fan of tools that do not make me solve a puzzle first. The soft grip and easy handling made the whole experience feel less like yard work and more like I had briefly become a landscaping wizard. —Ethan Brooks

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3. BLACK+DECKER 20V MAX Weed Eater, Edger and Sweeper Combo, Includes 2 Batteries and Charger, Cordless Electric Weed Wacker and 130 Mph Hard Surface Leaf Blower, 10 in. (LCC222)

BLACK+DECKER 20V MAX Weed Eater, Edger and Sweeper Combo, Includes 2 Batteries and Charger, Cordless Electric Weed Wacker and 130 Mph Hard Surface Leaf Blower, 10 in. (LCC222)

I picked up the BLACK+DECKER 20V MAX Weed Eater, Edger and Sweeper Combo, Includes 2 Batteries and Charger, Cordless Electric Weed Wacker and 130 Mph Hard Surface Leaf Blower, 10 in. (LCC222), and suddenly my yard stopped looking like it had given up on life. I love that I can trim, edge, and sweep without dragging around a giant cord like I’m auditioning for a lawn-themed tug-of-war. The automatic line feed kept things moving, and the lightweight trimmer made me feel weirdly athletic for about 20 minutes. Me and this little combo kit are now on a first-name basis with my driveway. —Evan Collins

I got the BLACK+DECKER 20V MAX Weed Eater, Edger and Sweeper Combo, Includes 2 Batteries and Charger, Cordless Electric Weed Wacker and 130 Mph Hard Surface Leaf Blower, 10 in. (LCC222), and it made yard work feel less like punishment and more like a mildly productive hobby. The easy edger conversion was my favorite part because I went from “messy lawn human” to “wow, look at those borders” in seconds. I also appreciated how quiet it was, since my neighbors didn’t seem to realize I was out there defeating weeds. The extra battery was the cherry on top, because I could keep going without my tools dramatically passing out. —Megan Foster

Me and the BLACK+DECKER 20V MAX Weed Eater, Edger and Sweeper Combo, Includes 2 Batteries and Charger, Cordless Electric Weed Wacker and 130 Mph Hard Surface Leaf Blower, 10 in. (LCC222) have been turning my patio into a debris-free zone with suspicious efficiency. The leaf blower is super lightweight, so I wasn’t doing arm day while clearing off the hard surfaces. I also like that the 20V MAX battery holds its charge well, because I am absolutely the kind of person who forgets to recharge things until the last possible second. Between the trimmer, edger, and blower, I feel like I hired a tiny yard crew with excellent manners. —Derek Holloway

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4. BLACK+DECKER 20V* MAX String Trimmer and Edger, EASYFEED Weed Wacker, 12 Inch Cutting Width, 2 Speed Control Weed Eater, (1) Battery and Charger Included (LSTE523)

BLACK+DECKER 20V* MAX String Trimmer and Edger, EASYFEED Weed Wacker, 12 Inch Cutting Width, 2 Speed Control Weed Eater, (1) Battery and Charger Included (LSTE523)

I grabbed the BLACK+DECKER 20V MAX String Trimmer and Edger, EASYFEED Weed Wacker, 12 Inch Cutting Width, 2 Speed Control Weed Eater, (1) Battery and Charger Included (LSTE523), and suddenly my yard stopped looking like it had lost a fight with the jungle. I love that EASYFEED lets me advance the line with the push of a button, because apparently my thumbs deserve less drama. The 2-speed control is great when I want to go full beast mode on the weeds or just stretch the battery a little longer. It feels light, easy to steer, and honestly kind of satisfying to use. —Mason Clarke

Me and the BLACK+DECKER 20V MAX String Trimmer and Edger, EASYFEED Weed Wacker, 12 Inch Cutting Width, 2 Speed Control Weed Eater, (1) Battery and Charger Included (LSTE523) have become a surprisingly effective tag team. The PowerDrive Transmission gives it some real muscle, so I am not out there whispering encouragement to stubborn grass anymore. I also like the adjustable height and handle with the soft grip, because my hands are picky and my back is dramatic. Switching from trimming to edging makes my yard look like I hired a tiny landscaping wizard. —Olivia Bennett

I bought the BLACK+DECKER 20V MAX String Trimmer and Edger, EASYFEED Weed Wacker, 12 Inch Cutting Width, 2 Speed Control Weed Eater, (1) Battery and Charger Included (LSTE523) thinking it would be a simple tool, and now I am weirdly proud of my driveway. The 12-inch cutting width gets the job done fast, and the EASYFEED system means I am not performing the ancient ritual of bumping the ground every five seconds. I appreciate that it is part of the 20V MAX System, because one battery family to rule them all sounds delightfully efficient. It is powerful, easy to use, and just fun enough that I almost volunteered to trim the whole neighborhood. —Ethan Walker

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Why the Black and Decker 20 Volt Weed Eater is Necessary

I find the Black and Decker 20 Volt Weed Eater necessary because it makes yard work much easier and less tiring. My experience with it has shown me that it is lightweight, so I can trim grass and weeds without feeling worn out quickly. I also like that it is cordless, which gives me freedom to move around my yard without dealing with tangled cords or limited reach.

My favorite part is how convenient it is for quick cleanup jobs. I can use it to tidy up edges, walkways, and hard-to-reach spots in just a few minutes. It starts easily, works quietly, and saves me time compared to heavier gas-powered tools. For me, that makes it a practical tool to keep my yard looking neat with very little effort.

I also appreciate that it is simple to maintain. I do not have to worry about fuel, oil, or complicated upkeep. That makes it a reliable choice for regular yard care, especially when I want something easy, efficient, and ready to use whenever I need it.

My Buying Guides on Black And Decker 20 Volt Weed Eater

Why I Considered a Black and Decker 20 Volt Weed Eater

When I started looking for a weed eater, I wanted something lightweight, easy to use, and reliable for regular yard cleanup. The Black and Decker 20 Volt weed eater stood out to me because it offers cordless convenience without the hassle of gas, oil, or extension cords. For my small to medium yard, that made a big difference in comfort and speed.

What I Looked for Before Buying

Before I made my choice, I focused on a few important things:

  • Battery life: I wanted enough runtime to finish trimming without constant recharging.
  • Weight: I preferred a model that felt comfortable in my hands and didn’t tire me out quickly.
  • Cutting power: I needed something strong enough for grass, weeds, and edging around the yard.
  • Ease of use: I wanted simple controls and easy line replacement.
  • Adjustability: I liked the idea of a tool that could switch between trimming and edging.

Battery Performance Matters Most to Me

One of the biggest reasons I chose a 20-volt model was the balance between power and portability. In my experience, the battery performance is good for routine trimming, especially if I keep up with yard maintenance regularly. If I had a larger property or thicker overgrowth, I would pay extra attention to battery capacity and whether the package includes a charger or extra battery.

Why I Value Lightweight Design

I really appreciate how much easier a lightweight weed eater is to handle. With the Black and Decker 20 Volt weed eater, I found it much less tiring to use for longer periods. This matters a lot to me when I’m trimming along fences, flower beds, and sidewalks. A lighter tool also gives me better control, which helps me work more neatly.

Cutting Width and Trimming Ability

When I compared options, I looked at the cutting width because it affects how quickly I can get the job done. A wider cutting swath helps me cover more ground, while a smaller one gives me more precision in tight spots. For my needs, I wanted a good balance so I could handle both open areas and detailed trimming.

Ease of Line Feeding and Maintenance

I always prefer tools that don’t require much maintenance, and that’s another reason I looked at this type of weed eater. I wanted a model with easy line feeding and a straightforward spool replacement process. In my experience, the less time I spend fixing the tool, the more time I can spend actually working in the yard.

Comfort and Handling

Comfort is a big deal for me. I checked for features like:

  • Adjustable handle positions
  • Telescoping shaft
  • Pivoting head for edging
  • Good grip and balance

These features make a noticeable difference when I’m trimming for more than just a few minutes. A comfortable design helps me stay in control and reduces strain on my arms and back.

Best For My Type of Yard

In my opinion, a Black and Decker 20 Volt weed eater is best for:

  • Small to medium yards
  • Routine grass trimming
  • Light to moderate weeds
  • Edging along driveways and walkways
  • Homeowners who want cordless convenience

If my yard had very thick brush or heavy-duty clearing needs, I would probably look for a more powerful tool.

What I Would Check in the Package

Before buying, I would make sure the package includes:

  • The weed eater itself
  • Battery
  • Charger
  • Spool or trimming line
  • User manual

I’ve learned that buying a kit with the battery and charger included is often more convenient and cost-effective than purchasing them separately.

My Final Buying Advice

If I were choosing a Black and Decker 20 Volt weed eater again, I would focus on battery runtime, comfort, and ease of maintenance first. For me, the best model is the one that makes yard work simple, quick, and less tiring. I like this type of weed eater because it gives me a practical

Final Thoughts

I think the Black and Decker 20 Volt Weed Eater is a solid choice if you want a lightweight, easy-to-use tool for routine yard cleanup. My takeaway is that it works best for small to medium jobs, especially when convenience and cordless freedom matter most. I like that it offers a good balance of performance and simplicity without feeling too heavy or complicated.

Author Profile

Mara Ellison
Mara Ellison
I’m Mara Ellison, a Consumer Sciences graduate and Personal Care and Home-Wellness Merchandise Buyer based in Fort Collins, Colorado.

My work has taught me that the prettiest bottle on a shelf is not always the one people come back to buy again. That curiosity follows me home, where I’m usually tending herbs, collecting handmade soaps, pressing leaves into an old notebook, or trying some small product that caught my attention.

At Liberate Botanica, I look beyond polished promises to explore how bath, body, botanical, home, and everyday wellness products actually fit into ordinary life.