Best Cordless Electric String Trimmers – Top 5 Brands Ranked

This is our official list of the best cordless electric string trimmers on the market today

Highest Reviewed Cordless String Trimmers

The most effective cordless string trimmer will help you complete minor outdoor yard work jobs without having to worry about extension cords, buying gas, or maintaining a carburetor. Keep in mind that a trimmer is better for cutting weeds or grass but not necessarily for cutting down tougher weeds or brush.

Cordless trimmers include either a Ni-Cad battery or a Lithium-Ion battery. Ni-Cad batteries are heavier and less expensive. They also usually drop in power as they lose their charge. On the other hand, Lithium Ion batteries have revolutionized outdoor power tools because they are lightweight and have a long-lasting charge that doesn’t fade as the battery depletes. Keep in mind whether you have other tools that share a similar battery when choosing a trimmer.

Tools with more than one use are a nice addition to a tool collection and many cordless trimmers have the ability to be used as a grass edger simply by turning the pivoting cutting head. The user is able to trim and edge the grass without having to get out another tool. The shaft of the trimmer could be curved, straight or adjustable. A curved shaft is helpful for cutting in tight areas, and has the ability to make the trimmer easier to control. Reaching under obstacles like decks, shrubs and benches might be easier with a straight shaft. The adjustable shaft will allow the user to adjust the working height of the trimmer.

1.) BLACK+DECKER LST136W Lithium Ion String Trimmer

BLACK+DECKER LST136W Lithium Ion String Trimmer

For those who are searching for a trimmer and edger within the Black + Decker line of tools, this might be a good choice. Black + Decker’s 40-Voltlithium-ion system includes a string trimmer, hedge trimmer, sweeper vac, and a sweeper/blower vac, which can all utilize the 40-volt MAX lithium-ion battery included with the trimmer.

The PowerDrive transmission will deliver power from the motor to the cutting string to trim grass as well as edge along hard surfaces. The auxiliary handle with quick release, 13-inch cutting swath and 0.065 line diameter make this a convenient tool.

Keep in mind, that it only takes an hour to recharge the included 40-volt battery. Since the tool weighs about six pounds, it can easily be handled to complete yard work jobs.


  • Lightweight and powerful.
  • Automatic feed spool ensures continuous work without bumping.
  • Converts from trimmer to edger by turning the shaft.


  • Tiny guard could allow debris to spray while in use.

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2.) DEWALT DCST990H1 Lithium Ion XR String Trimmer

DEWALT DCST990H1 Lithium Ion XR String Trimmer

The Dewalt DCST990H1 Lithium Ion XR String Trimmer has a patented gear drive design housed in a metal gear case for durability. There is a full variable trigger, which allows the user to have control over both the speed and noise.

The low setting works well for the short grass and the high setting works better for tall weeds and brush. This tool has a dual 0.080″ line with a bump feed head, which gives the user control over the feed rate.

Additionally, there is a 15 inch cutting swath to help get a job done quickly and efficiently. It is convenient that it is low maintenance and won’t need maintenance involved with gas-powered trimmers since there aren’t any spark plugs, carburetors, or air filters.


  • Low noise.
  • Durable.
  • Less maintenance.


  • Pricier than some of the other trimmers out there.

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3.) EGO Power+ Cordless Brushless String Trimmer

EGO Power+ Cordless Brushless String Trimmer

Extra durability, double string power and a quick charging time could make the EGO Power+Cordless Brushless String Trimmer a good choice for someone who has some yard work to accomplish. The EGO is quieter than some of the other trimmers out there, but it is heavier too.

Since the tool is cordless, the user does not need to have any oil or gas on hand. A long-lasting battery makes this a convenient tool, and it even has a variable speed trigger. Since the battery is interchangeable with other EGO tools, swapping a battery with another tool like the mower is always an option.


  • Weather-resistant construction.
  • Variable speed trigger.
  • Lightweight, but powerful.


  • Heavier than some other trimmers.

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4.) BLACK+DECKER LST420 Lithium High Performance Trimmer

BLACK+DECKER LST420 Lithium High Performance Trimmer

The Black + Decker LST420 Lithium High Performance Trimmer has a dual-mode switch for extra power or extra runtime. Furthermore, the POWERDRIVE transmission is able to tackle tough overgrowth, and it can easily convert from a trimmer to an edger.

Another nice feature of this edger is that it comes with two batteries and a charger so one battery can be on the charger while the other is in the machine. Compared to a gas powered trimmer, it is very lightweight at about six pounds. Additionally, the trimmer can easily adapt to people of varying heights since the handle length adjusts.

Furthermore, BLACK + DECKER LST 420 Lithium High Performance Trimmer is part of the 20V Max tool system that uses the same line of batteries to fit multiple tools. This trimmer is great for someone who has a small yard and is looking for convenience and speed.


  • Can be used as an edger or trimmer.
  • Lightweight.
  • Great battery life.


  • Must buy Black and Decker replacement spools for the edger.

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5.) GreenWorks 2101602 G-MAX Cordless String Trimmer

GreenWorks 2101602 G-MAX Cordless String Trimmer

One of the best features of Greenworks tools is the ability to interchange the G-Max Battery for more than 25 tools. GreenWorks boasts the industry’s largest 40V system and you can save on buying tools if you buy within their interchangeable system.

The fully charged 40V 2Ah battery runs up to 30 minutes at low speed on a single charge. Within 60 minutes, a 2AH battery will be charged, while the 4AH battery takes approximately 120 minutes. For quick cleanup jobs, this tool will get the job done.

Another great feature is the rotating head, so the tool can act as an edger in addition to a trimmer. Additionally, the twisted dual line with .065″ auto feed works with a variable speed trigger. The GreenWorks Trimmer could replace a gas powered tool.


  • Adjustable speed.
  • Lightweight.
  • Long-lasting battery.


  • Lack of an adjustable length.

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Final Say on Cordless String Trimmers

There are pros and cons to even the best cordless string trimmer, but all of them are a convenient tool to have available for smaller yard work jobs. The user won’t be restricted to a certain area because of the length of an extension cord, and they will require less maintenance than a gas trimmer. Overall, cordless trimmers could be a great addition to a tool collection.