To see product details, add this item to your cart. You can always remove it later.
FREE Returns
Added to

Sorry, there was a problem.

There was an error retrieving your Wish Lists. Please try again.

Sorry, there was a problem.

List unavailable.

BLACK+DECKER 20V MAX Cordless String Trimmer, 2 in 1 Trimmer and Edger, 12 Inch, Battery Included (LST300)

4.5 4.5 out of 5 stars 7,899 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in String Trimmers by BLACK+DECKER

To see product details, add this item to your cart. You can always remove it later.
FREE Returns
Available at a lower price from other sellers that may not offer free Prime shipping.
20V String Trimmer Kit

Purchase options and add-ons

Brand BLACK+DECKER
Power Source Battery Powered
Color Grey and Orange
Item Weight 5.7 Pounds
Cutting Width 12 Inches

About this item

  • 2-in-1 cordless trimmer and edger cuts along borders, sidewalks and flower beds and easily converts between trimmer and wheeled edger. Trimming areas of overgrowth after mowing .Charger Type:Jack plug. Battery Amp Hours:2 Ah
  • EASY HANDLING: Lightweight and easy to handle with adjustable height handles
  • MORE LINE, MORE CONTROL: Automatically feeds more line with no bumping necessary thanks to automatic spool feed technology
  • HIGH POWER, LOW NOISE: Powerdrive transmission delivers more power from the motor to the cutting string so you can get the job done faster
  • ONE BATTERY, ENDLESS USES: Part of the BLACK plus DECKER 20v Max Power connect System for easy battery switching between tools and tasks.
  • One 20v Lithium battery pack for 33 percent more run time
  • Runtime extension technology for long run time

Customer ratings by feature

Light weight
4.6 4.6
Maneuverability
4.6 4.6
Battery life
3.9 3.9

Frequently bought together

$76.88
Get it as soon as Monday, Apr 1
In Stock
Ships from and sold by Amazon.com.
+
$17.94
Get it as soon as Monday, Apr 1
In Stock
Ships from and sold by Amazon.com.
+
$37.01
Get it as soon as Monday, Apr 1
Only 2 left in stock - order soon.
Sold by GNS Products Limited and ships from Amazon Fulfillment.
Total price:
To see our price, add these items to your cart.
Details
Added to Cart
Some of these items ship sooner than the others.
Choose items to buy together.

Compare with similar items

This Item
BLACK+DECKER 20V MAX Cordless String Trimmer, 2 in 1 Trimmer and Edger, 12 Inch, Battery Included (LST300)
BLACK+DECKER 20V MAX Cordless String Trimmer, 2 in 1 Trimmer and Edger, 12 Inch, Battery Included (LST300)
Recommendations
MAXLANDER Weed Wacker Cordless, 20V 12 Inch Cordless String Trimmer Edger, Weed Wacker Battery Operated with 8 PCS Replacement Spools, Lightweight Weed Trimmer, Battery and Charger Included
dummy
MAXLANDER String Trimmer/Edger 10 inch with 2 PCS 2.0Ah Batteries, 20V Cordless Wacker with 1 PCS Quick Charger & 6 PCS Replacement Spool Trimmer Lines, Lightweight Weed Edger
dummy
SOYUS Weed Wacker Battery Operated, 12 Inch String Trimmer Cordless, 20V Weed Wacker Electric with Battery and Charger, Lightweight Edger Trimmer with 8 Pcs Replacement Spool Trimmer Lines
dummy
Berserker 20V 12" Cordless String Trimmer 2.0Ah Battery Powered and Fast Charger Included, 2-in-1 Compact Weed Wacker Eaters and Edger with Support Wheels,Ideal for Lawn Trim and Yard Maintenance
dummy
JAGROM 12-inch Cordless String Trimmer with Fast Charger, 2 X 2.0Ah Battery Powered Weed Wacker with Auto Line Feed, 20V Weed Eater, Lawn Edger with 8 Pcs Grass Cutter Spool Line and 2 Spool Cap
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Price-23% $76.88
List:$99.99
$89.99$89.99$89.99$89.79$99.99
Delivery
Get it as soon as Monday, Apr 1
Get it as soon as Wednesday, Apr 3
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Customer Ratings
Light weight
4.6
4.4
4.4
4.6
4.7
Maneuverability
4.6
4.1
4.1
4.6
4.6
Battery life
3.9
3.9
3.9
4.0
5.0
Easy to use
4.1
4.1
3.6
Sold By
Amazon.com
MAXLANDER
MAXLANDER
SOYUS--US
Berserker Trade
JAGROM-Hometools
power source
Battery Powered
Battery Powered
Battery Powered
Battery Powered
Battery Powered
Battery Powered
cutting width
12 inches
12 inches
10 inches
12 inches
12 inches
12 inches
assembly required
weight
5.7 pounds
6 pounds
6.15 pounds

From the manufacturer

BLACK+DECKER 20V MAX 12-Inch Cordless String Trimmer (LST300)

BLACK+DECKER 20V MAX 12-Inch Cordless String Trimmer

Cordless, battery-powered string trimmer/edger converts easily between trimmer and wheeled edger functions.

Features and Benefits of the BLACK+DECKER 20V MAX 12-Inch Cordless String Trimmer

Two Tools In One

PowerDrive Transmission Technology

Lightweight Control

Two Tools In One

Easily convert from string trimmer to wheeled edger.

PowerDrive Transmission Technology

Patented transmission tech gives you increased torque and more cutting power at the string head.

Lightweight Control

Work safely and comfortably and find your fit with an adjustable height handle.

No Cord. No Gas. No Hassle.
One Compatible Battery System

Powered by the BLACK+DECKER 20V MAX* Powerconnect Lithium-Ion battery system, so you can swap seamlessly between your 20V MAX* Powerconnect tools.

Product guides and documents

Looking for specific info?

Product information

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Feedback

BLACK+DECKER

BLACK+DECKER 20V MAX Cordless String Trimmer, 2 in 1 Trimmer and Edger, 12 Inch, Battery Included (LST300)


Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

Where did you see a lower price?

/
/
/
/
Please sign in to provide feedback.

Product Description

Twice the tool in one easy package. The BLACK+DECKER 20v Max Power connect 12-Inch String Trimmer/Edger makes cutting back overgrowth, grass, and weeds simple. Easily switch between trimmer to wheeled edger and take control of your lawn, backyard, or sidewalk thanks to adjustable height and handles with premium micro texture grips. PowerDrive Transmission puts more power in your hands with increased torque and cutting power at the string. Automatic spool feed technology automatically feeds more line when you need it with no bumping necessary. Because it’s part of the 20v Max Power connect System, you can easily swap the battery between all of your BLACK+DECKER 20v Max Power connect tools. Maximum initial battery voltage (measured without a workload) is 20 volts. Nominal voltage is 18.

Customer reviews

4.5 out of 5 stars
4.5 out of 5
7,899 global ratings

Customers say

Customers like the weight and versatility of the string trimmer. For example, they mention it's very light and easy to use. That said, they're happy with ease of use, quality, and value. Opinions are mixed on power, battery life, and charging.

AI-generated from the text of customer reviews

1,116 customers mention914 positive202 negative

Customers like the quality of the string trimmer. They mention that it does a decent job, works fine for regular trimming, and is a great tool for an urban yard. The automatic feed and cutter works well, and it's lightweight and easy to handle. Overall, customers are satisfied with the performance and quality of this product.

"...It chews through weeds like they are cotton candy. Clean cuts, really fast.Finally, the battery rocks...." Read more

"...This weedeater not going to walk though tall brush, but it works great for my urban yard. I'm 75 it's lightweight and battery last longer than me 😆..." Read more

"...But its super lightweight and easy to use. The automatic feed and cutter works well, though it can be loud for a sec until the cutter cuts the string..." Read more

"...I will say this battery holds up longer and keeps more of its power... instead of a slower speed in the last 5 or 7 minutes.. leaving gapped blades..." Read more

601 customers mention591 positive10 negative

Customers like the weight of the string trimmer. They say it is very light, solid, and not any more heavy than their old corded electric. They also appreciate the small, compact charger for battery and the fact that it telescopes down to an easily storable size.

"...Since it’s battery powered and lightweight, I wondered if it was a glorified toy.Rest assured it is not...." Read more

"...I'm 75 it's lightweight and battery last longer than me 😆..." Read more

"...But its super lightweight and easy to use...." Read more

"...This one seems lighter also...." Read more

499 customers mention472 positive27 negative

Customers find the string trimmer easy to use. They mention it's convenient, easy to put together, and great for small, easy jobs. Some say the trimmer is easy to change string and has an interchangeable battery. Overall, most are satisfied with the product's ease of use.

"...Recharges in about 15 minutes. And is a breeze to snap on and off.Also, it’s a Black & Decker and the battery fits my B&D leaf blower!..." Read more

"...But its super lightweight and easy to use...." Read more

"Love that it is light weight and assembly was easy. Easy to use." Read more

"Pros:Easy to assembleDoes the jobComes with lineComes with a battery (though only 2Ah)Cons:..." Read more

219 customers mention197 positive22 negative

Customers like the value of the string trimmer. They mention it's affordable, works well, and is well worth the price. Some say that it'll last up to an hour on a charge.

"...He’s already used it on our yard & says it works great. Good deal for the price." Read more

"Nice medium priced trimmer" Read more

"...other than that, awesome toy at half the price all the others are listed at." Read more

"Ok quality on time for price" Read more

136 customers mention136 positive0 negative

Customers find the string trimmer versatile and good for small yards. They say it's perfect for small homes with regular maintenance of the lawn. Customers also mention that it'll work well for their needs.

"...Probably not the ticket for big or heavy duty jobs, but very good for smaller yards." Read more

"...They also take up a lot less space, and your neighbors won’t have to hear your chainsaw sounding weed whacker on Sunday mornings...." Read more

"Love the lithium batteries, long run time, have a big yard,hate the controls, the way you turn it on to use, the old style had a better on off switch..." Read more

"This a lightweight version of a whipper snipper. It is OK for a garden edge but fairly useless with high grass...." Read more

605 customers mention289 positive316 negative

Customers are mixed about the battery life of the string trimmer. Some mention that it has great battery life, has extra charge, and lasts for about 45 minutes of use. However, others say that the battery dies super fast and the technology still seems sub-par.

"...Battery life leaves something to be desired, and the handle you grasp for leverage, which is adjustable, slips out of my favorite position, which is..." Read more

"...Clean cuts, really fast.Finally, the battery rocks. I’ve run it for an hour and it hasn’t quit on me yet. Recharges in about 15 minutes...." Read more

"...Cons:The included battery is useless as the runtime is too short (got a 5Ah)..." Read more

"...I'm 75 it's lightweight and battery last longer than me 😆..." Read more

289 customers mention148 positive141 negative

Customers are mixed about the power of the string trimmer. Some mention it has proven to be powerful enough to get rid of high and heavy weeds, and to do the small landscape maintenance. However, others say that it doesn't have a lot of power, the battery holds up longer, and keeps more of its power.

"...I will say this battery holds up longer and keeps more of its power... instead of a slower speed in the last 5 or 7 minutes.. leaving gapped blades..." Read more

"...Cons:The included battery is useless as the runtime is too short (got a 5Ah)..." Read more

"...I like that it automatically feeds trimmer string. Power is adequate but don’t count on clearing brush with it, this is a light duty trimmer for a..." Read more

"Really light weight and easy to use, not as powerful as an electric one but works for me" Read more

141 customers mention48 positive93 negative

Customers are mixed about the charging of the string trimmer. Some mention that it re-charges in reasonably quick time, while others say that it takes a bit to recharge and that the battery appears to be discharging faster than expected.

"I love this and it's light and easy to use. However, I can't find my charger and battery and I can't find where I can buy another charger alone...." Read more

"...I’ve run it for an hour and it hasn’t quit on me yet. Recharges in about 15 minutes. And is a breeze to snap on and off...." Read more

"...Battery does take a long time (up to five hours) to charge. Probably not the ticket for big or heavy duty jobs, but very good for smaller yards." Read more

"I like everything- only thing that is the downfall is battery takes a long time to charge— but I only use for light trimming, so not really an issue...." Read more

Poor Battery Life
3 Stars
Poor Battery Life
I have a pretty small backyard, the battery didn’t last long enough to do the perimeter of the yard. This is quite disappointing to have to do it in two phases to wait for the battery to recharge. Lasting 15-20 minutes on a brand new battery and fully charged.It cuts well though and is easy to manage. Since the battery is so poor, it should come with two.
Thank you for your feedback
Sorry, there was an error
Sorry we couldn't load the review

Top reviews from the United States

Reviewed in the United States on May 15, 2023
Style: 20V String Trimmer KitVerified Purchase
74 people found this helpful
Report
Reviewed in the United States on March 11, 2024
Style: 20V String Trimmer KitVerified Purchase
8 people found this helpful
Report
Reviewed in the United States on March 23, 2024
Style: 20V String Trimmer KitVerified Purchase
One person found this helpful
Report
Reviewed in the United States on June 18, 2023
Style: 20V String Trimmer KitVerified Purchase
6 people found this helpful
Report
Reviewed in the United States on February 27, 2024
Style: 20V String Trimmer KitVerified Purchase
3 people found this helpful
Report
Reviewed in the United States on March 2, 2024
Style: 20V String Trimmer KitVerified Purchase
3 people found this helpful
Report
Reviewed in the United States on March 12, 2024
Style: 20V String Trimmer KitVerified Purchase
3 people found this helpful
Report
Reviewed in the United States on October 5, 2023
Style: 20V String Trimmer KitVerified Purchase
7 people found this helpful
Report

Top reviews from other countries

Martin
5.0 out of 5 stars It’s compatible!
Reviewed in Canada on September 15, 2023
Style: 20V String Trimmer KitVerified Purchase
KatyR
3.0 out of 5 stars Nice and light little tool
Reviewed in India on March 21, 2017
Style: 20V String Trimmer KitVerified Purchase
11 people found this helpful
Report
Amazon customer
5.0 out of 5 stars light weight and no assembling needed !
Reviewed in Canada on July 10, 2021
Style: 20V String Trimmer KitVerified Purchase
7 people found this helpful
Report
leah moody
4.0 out of 5 stars Good value for money
Reviewed in Canada on July 10, 2023
Style: 20V String Trimmer KitVerified Purchase
D L.
5.0 out of 5 stars Worked great right out of the box (after charging)
Reviewed in Canada on June 21, 2018
Style: 20V String Trimmer KitVerified Purchase
33 people found this helpful
Report