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20-volt max 12-in Straight Shaft Battery String Trimmer Edger Conversion Capable 2 Ah (Battery Included) (Charger Included)

Ratings & Reviews for BLACK+DECKER 20-volt max 12-in Straight Shaft Battery String Trimmer Edger Conversion Capable 2 Ah (Battery Included) (Charger Included)

4.1
198
Review
 4.1 out of 5
198 Reviews


76% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The cordless trimmer offers good power and cutting ability for small to medium-sized yards. It is lightweight and easy to use, making it suitable for a variety of users. However, the battery life may be limited, especially for larger jobs, and the assembly and instructions can be challenging. While the trimming performance is generally strong, the edging capabilities are not as robust for some customers. Overall, it provides a solid cordless option with a balance of quality and affordability.

Customer review summary generated by AI, including incentivized reviews.
198 Customer Reviews

Disappointment

Would Not Recommend

And the school empty too quickly the line is too thin running times too short. Too hard to read the read this pool

April 7, 2026

From blackanddecker.com

Response from Stanley Black And Decker

Hello Bobbby, I appreciate your feedback on the LST300 20V MAX* POWERCONNECT™ Cordless 2-in-1 String Trimmer & Edger, Battery & Charger Includ...

Stanley Black And DeckerApril 7, 2026

Powerful weed eater

Would Recommend

This is one powerful weed eater it gets the job done right and then some Everytime I use it.the battery actually lasted a lot longer then the other brands on the market. I highly recommend buying it

March 28, 2026

From blackanddecker.com

Great trimmer!

Would Recommend

I have had this trimmer for a few years and love it. The battery life is great and lasts a long time. This trimmer can also edge when the guard is flipped around. I would definitely buy again.

March 13, 2026

From blackanddecker.com

LST300

I have the LST 300 it has been a great and easy weed cutter . I use it to trim around picnic table and flower bed. it is light and very dependable.

March 12, 2026

From blackanddecker.com

Great Product

Trimmer works great for me. Battery life is usually enough to do my whole yard. (1 acre) Only problem is the adjustable handle sometimes shifts position on its own, but I just put a couple of cable ties to hold it where I want it. Trimmer line lasts a long time also for me!!

March 10, 2026

From blackanddecker.com

Great weed eater for the money

Would Recommend

This works great . It’s light weight so my wife likes to use it. Also edges well . Pretty good run time but I’ve got several batteries for my other B&D tools

March 10, 2026

From blackanddecker.com

Weed eater does the job

Would Recommend

I have had this weed eater for several years now and it is great, runs well, trims well, handles well and trims good. It runs well depending on how much you have to do. If you have heavy your lawn or edging work is that needs to be done. The more you use the item the better you get and the more accurate you become.

March 9, 2026

From blackanddecker.com

Great tool for a lady to operate

Would Recommend

I love my Black & Decker Edger/Trimmer. It's the second one I have owned. I could adjust it to my 5'4" height, and I found it very easy to switch from edger to trimmer. It makes edging and trimming a breeze. Replacing the spool can be a little tricky for small hands, but it can be mastered.

March 5, 2026

From blackanddecker.com

Love Weed Wacker, but problems with manual

Would Recommend

I love the Weed Wacker. I wish the manual had less "boiler plate" items. And the manual should include the figure referenced instead of forcing user to keep going back and forth to the image page (maybe out the figure page at the page before it is referenced. In a nutshell, less lawyer speak and more regular englis.

August 21, 2025

From blackanddecker.com

Weak wire

Would Not Recommend

The wire simply tore off every 3-5 minutes, this is nightmare. I wish there was a stronger wire.

April 30, 2025

From blackanddecker.com

Response from CS

Hello. Thank you for taking the time to provide your feedback. I'm sorry you weren't pleased with the LST300. Your feedback is valuable as we take i...

CSMay 1, 2025

Cordless Weed Trimmer

Using my weed trimmer for the first time. I was impressed with how light it was . As far as trimming, it performed well for the size yard that I have. My previous weed trimmer was gas and heavier but this trimmer was just what I needed.. Also, this is my first cordless trimmer. I have used Black and Decker products in the past have have been pleased with how well they performed.

October 7, 2024

From blackanddecker.com

Doesn't do the job.

Would Not Recommend

I mistakingly went from another name brand to this Black and Decker 20v mess. Being a woman I wanted something light weight. The kiddo trimmer line does not hold up to edging and takes 3 passes or more to do the job. The auto feed worked for only 1 hour. Come on black and decker, I'm so disappointed

August 24, 2024

From blackanddecker.com

Response from Lee

Hello. I appreciate your feedback on the String Trimmer and I'm sorry to hear you are not happy with the unit. Your satisfaction is our top priority....

LeeAugust 27, 2024

NOT A HAPPY CAMPER!

Instruction Manual Sucks!!! Haven't even used! Can't find location of operating parts on trimmer because it only gives black & white pictures with numbers, but doesn't tell what the numbers are corresponding to! Never saw a manual before in my life that didn't have a list of operating parts with the corresponding numbers so you could tell what the hell the numbers mean!!!

August 12, 2024

From blackanddecker.com

Response from BLACK+DECKER

Hello Gennie, I appreciate your feedback on the LST300 20V MAX* Lithium 12 inch Cordless 2-in-1 Trimmer/Edger With Auto Spool Feed and I'm sorry to he...

BLACK+DECKERAugust 15, 2024

A Great Idea Not So Great execution

Would Recommend

This is my third B & D trimmer. The first one died of old age. The second one, probably still under warranty, the spinner core oddly disconnected from the motor and just stopped turning.And I bought the "mower" attachment for it the wheels are too high (I lowered them) to effectively remove the weeds. For the 3rd bought a few weeks ago, the weed deflector didn't fit on all the way. Luckily I still had it from the second machine which fit perfectly. While I like the device in many respects, I ...

August 8, 2024

From blackanddecker.com

Love the cordless

Would Recommend

Easy to assemble. Easy to use. Only complaint is the safety button doesn't lock into place, so the button has to be held in while squeezing the trigger at the same time.

July 3, 2024

From blackanddecker.com

Good product

Would Recommend

Great quality and ease of use. Bought it as a father’s day gift and he loved it as our old weed eater was on its final leg. The only problem is battery size, but paired with other B&D batteries it’s perfect

June 30, 2024

From blackanddecker.com

JY

Would Recommend

Been having this thing for at least 7 or 8 years. Batteries are a bit weaker and had to change the feed spool cover 4 or 5 times but this thing works great. Black and Decker has the most consistent line feed system I have found. Other trimmers I had I was constantly fighting with the feed line. This is the second B&and battery weed eater I have had and my next one will be as well. Only issue is I wish the batteries lasted a bit longer. I can weed eat and blow for about 30 minutes on the 2 batter...

May 23, 2024

From blackanddecker.com