Black Decker LST300 12-Inch Lithium Trimmer and Edger

by Dan | Last Updated: March 25, 2021

The Black & Decker LST300 12-Inch Lithium Trimmer and Edger provides amazing results without the hassle and mess usually associated with trimmers that are powered by gas. In fact, it offers freedom and convenience with its cordless feature. This cordless trimmer comes equipped with a 2-in-1 flip to edge capability which can easily convert this equipment from a trimmer to an edger.

At the same time, its pivoting handle and adjustable height positions offer maximum control and comfort. As such, it is perfect for trimming certain overgrown areas after mowing and edging towards the sidewalks, borders, and even flower beds.


The Black & Decker Trimmer and Edger comes equipped with one 2.0 amp hour lithium ion battery offering 33% more in terms of runtime for every battery pack when compared to its earlier models. Also, this equipment comes in a very powerful package. It is very quiet to operate and easy to start. It is also very light at a weight of 5.7 pounds.

This cordless trimmer also introduces the PowerDrive transmission technology system which provides consistent power in most types of grass, thus allowing you to maintain cutting performance when it comes to trimming and edging in weeds or heavy grass. This extra efficient performance, including a generous 12-inch cutting swath makes tasks go quicker.

With the LST300, you will never have to deal with bumping just to release the string, or spending so much time when it comes to continuously adjusting the string pool. This is because its Automatic Feed Spool helps in keeping the string at its optimal length continuously and automatically. Also, this equipment comes with batteries that provide a longer lifespan, retaining its charge five times longer compared to the similar 18v NiCad batteries.

They are also compatible with other lines of power as well as gardening tools, without the limit of using extension cords. It is also easy to maneuver and use, with the power combination removing the need for oil or gas to be stored.

By choosing the LST300 12-Inch Lithium Trimmer and Edger, you can also expect the trimming line to automatically advance without the need to stop and bump, making sure that it can deliver great cutting results without the hassle and mess usually associated with gas-powered trimmers. It can definitely offer convenience by being cordless. Other features also include a 2-in-1 flip to edge feature that can easily convert from a trimmer to an edger.

Also, its pivoting handle and adjusting height positions offer maximum control and comfort. As such, it is highly preferred by individuals who are looking at trimming certain areas of overgrowth after completing mowing and edging alongside borders, flower beds and sidewalks.

With its 20V max lithium batteries, you can expect a longer lifespan as it retains the charge five times longer when compared to similar 18V NiCad batteries. Most importantly, these batteries are highly compatible with the complete line of other Black & Decker gardening and power tools.

As an extra feature, you do not have to worry about being restrained with the use of an extension cord.It is also easy to use and operate, as the battery-powered combination of a trimmer and edger removes the need for both oil and gas storage.

A lot of people love the fact that the battery pack included in this product charges quickly. One impressive thing that makes it easy to operate is that it is very light. With this piece of equipment, it is very easy to get rid of the smell, noise and overheated engine you would experience with other models. It is a perfect tool for a regular suburban lawn.

Another important highlight is that the difference when it comes to cost in the battery is well worth it, unless you are just using it for a very small area. Even though an extra battery pack is not included, getting one is not very expensive.


  • Quiet and easy to start
  • Lightweight design
  • Maximum control and comfort
  • More power from the motor going to the cutting string
  • More runtime per battery pack


  • Some users would like to have a 2nd battery pack included in the package
  • Warranty is not automatically included


Most customers who have purchased the Black & Decker LST300 praise the equipment because of its amazing features. For one, this piece of equipment is a testament to the fact that great things can really come in small packages.

Despite being lightweight, there is an assurance that you can get your yard work done easily and quickly. Its 20V battery has the capacity to deal with light to moderate yard work, with its easy adjustment system allowing for the machine’s quick adjustment. At the same time, this trimmer comes with a good battery life.

This product’s reputation is brought about by the fact that the company behind this name has been trusted by many people for several years already. As a matter of fact, Black & Decker has even been considered as the standard when it comes to the design and innovation of accessories for power tools, home cleaning products, outdoor yard care tools, lighting and automotive products.

The company evolved from a small shop to an internationally known marketing and manufacturing powerhouse with a wide range of quality products that are used in and round the home, as well as in commercial applications. If you need to complete a task, there is no doubt that Black & Decker products can efficiently do the job, and will reliably complete the task.

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