The 5 best cordless string trimmer in 2021

Say goodbye to the cumbersome corded weed eaters and look for the best cordless string trimmers below to bring back your lawn’s beauty.  


When spring comes, it means you should give your yard better care. It’s time for the cutting season to remove all the annoying weeds around the house. Now you definitely think of the conventional mowers, which are very bulky and cannot reach some tight areas. This is when the string trimmer comes. 

A battery-powered string trimmer can keep your lawn uniform and polished without needing a long cable and an electric socket to charge it while working. In this article, you will find out the top cordless string trimmers on the market. Plus, we will also provide you with easy-to-understand buying guides so that you can choose the right type that works best in your circumstance. Let’s check it out

Our top picks 

To help you quickly choose the best cordless string trimmer for your yard, we would like to introduce the top battery-powered trimmers that have been chosen from a vast majority of brands on the market. Let’s take a look:

Greenworks 40V 14inch Cordless String Trimmer 

Greenworks 40V 14inch Cordless String Trimmer
Greenworks 40V 14inch Cordless String Trimmer 

The string trimmer from Greenworks will make you never want to come back to the gas-powered trimmer. The great thing is you can still take advantage of the attachments from the gas counterpart. The brushless motor delivers greater torque and quiet operation, also making it faster to start in just a few seconds.

The 40V battery capacity allows you to remove all the weeds in your yard powerfully. The only minus of this product is the pretty high price compared to the average, but it’s totally worth the money if you can afford it. 

WORX WG163 PowerShare 12″ Cordless String Trimmer & Edger

WORX WG163 PowerShare 12" Cordless String Trimmer & Edger
WORX WG163 PowerShare 12″ Cordless String Trimmer & Edger

Another option at a more reasonable price is the WORX cordless string trimmer. As the name implies, this is a 2in1 product, which can be transformed from the trimmer to the edger and again. This item is more suitable for a smaller lawn because of the less powerful battery at 20V each. These batteries can work on any product from this brand. 

The instant line feed with innovative buttons, making trimming grass and weeds is a lot easier. The cordless string trimmer from WORX also has a spacer guard to protect the surrounding flower, plants, or any decorative part of your lawn. 

BLACK+DECKER 20V Max String Trimmer/Edger

BLACK+DECKER 20V Max String Trimmer/Edger
BLACK+DECKER 20V Max String Trimmer/Edger

The battery-powered string trimmer from the Black & Decker Outdoor will definitely satisfy even the pickiest gardener. It has a reasonable price and comes with a variety of variants for you to choose from.

The 2in1 product works as a trimmer and edger without needing any tool to transform. It has two speed controls so that you can have more options when removing the weeds around the house. If you have time and the job doesn’t require as much power, you can choose the lower speed, and if you are in a hurry, just stick with the higher power. 

Makita XRU15PT1 Lithium-Ion Brushless Cordless String Trimmer

Makita XRU15PT1 Lithium-Ion Brushless Cordless String Trimmer
Makita XRU15PT1 Lithium-Ion Brushless Cordless String Trimmer

If your budget is unlimited, you can opt for this cordless string trimmer from Makita. This high-end product comes with a pretty high price, but when you receive the package and experience, you will understand why.

This is a full kit of a brushless battery-powered string trimmer with four 18V Lithium-Ion batteries and the bum and feed trimmer head packed with a 0.080″ twisted quiet line. Especially, there are three different speed modes to control the trimming process better. 

DEWALT 13-inch Cordless String Trimmer

DEWALT 13-inch Cordless String Trimmer
DEWALT 13-inch Cordless String Trimmer

The last suggestion from us is the cordless string trimmer from DEWALT. It is voted as Amazon’s choice so you can feel safe about the quality of this product. The 2in1 trimmer and edger will help create neat and tidy edges around your yard or driveway. 

It is lightweight and ergonomic, giving you the most comfortable feeling when you are doing your cutting job without any noisy sound that might disturb your neighbors. This product is also equipped with two power managements, the low and high speeds to help the trimming process much easier. 

Why should we use a cordless string trimmer? 

Cordless weed eaters are packed with many benefits, and you will never feel regretful once you buy them to clean your yard. Below are some advantages you will get once possessing the cordless string trimmer in your house. 

Easier to use

The reason why using a cordless string trimmer is a lot easier is that it has a more compact design compared to the gas-powered counterpart. It is lighter and isn’t noisy while working, which makes them preferred by many people. 

Some people hesitate to use a trimmer or mower to clean their lawn just because of the annoyingly loud sound that can disturb their neighbors. But now you don’t have to worry about it with the quiet operation from the cordless version. 

Moreover, it is not only easier when using but also when charging the machine. When the battery is low or completely shut down, you can easily recharge it for the next time.


When it comes to a gas string trimmer, it is definitely not friendly with the environment. The gas emissions are not good for the surrounding environment as well as your health. This is not going to happen if you use a battery-powered string trimmer. Although an electric string trimmer doesn’t have any emission either, you know, it is corded, which is definitely more cumbersome than the cordless version.

Now you won’t have to buy gas and oil to mix every time you want to cut some weeds, and you won’t smell like an engine after cleaning your lawn. Isn’t it great?

Low maintenance

Another benefit you can receive from using a cordless string trimmer is the low maintenance the machine requires. The gas and oil residue can sometimes create some build-ups and dirty spots on your trimmer, making it harder to clean and might even affect how it works. 

On the other hand, you only need to make sure that your cordless string trimmer is charged beforehand so that you can use it to remove all the weeds around the house. Even if you forget recharging it, don’t worry, it only takes about 30 minutes to two hours to fully charge your weed eater. 

What to consider when buying a cordless string trimmer?

Now you know how important and amazing it is to have a battery-powered string trimmer in your house, right? But how can you choose the one that works the best for your lawn but affordable? Below are some criteria that you should look for to have the best cordless string trimmer.  

Shaft type

When it comes to string trimmers, there are two common types of shaft: the straight and curved ones. It will be hard to determine which shaft is better because it is more about personal preferences about the design and comfort when using it.

Tall people seem to prefer the cordless string trimmer with a straight shaft because of the longer reach so that they don’t have to bend their backs when cutting weeds. Whereas, the curved counterpart is likely to offer users more comfort to hold for a long period of time because it is lighter in weight. Both have their pros and cons so you can consider which one better suits you. 

Head type

There are three major kinds of the head for string trimmers: the bump feed head, automatic feed head, and fixed head. Each of these heads has its own advantages and disadvantages. 

For example, the bump head will release string when the trimmer head reaches the ground or an object. The automatic head on the other hand works the same way as the bump feed, but it will release more string without needing the user to put it in. In the fixed-line head, users need to manually place the string into the trimmer once at a time. 


The more capacity the trimmer has, the more powerful the machine is. So if you have a large lawn and so many weeds to remove, it would be better to stick with a high-capacity cordless string trimmer. 

Safety features

A good string trimmer should be equipped with safety guard features. A shield to cover the string will help prevent the scattered pieces of weeds, rocks, or anything from the ground from flying to you. Anything out there can become dangerous, so you better protect yourself with a string trimmer that has shield protection. 


Last but not least, you need to check the price of the string trimmer that you want to buy to see if you can afford it or not. Normally, the more and latest functions the trimmer is equipped with, the higher price it has. You can opt for the upper limit of your budget to buy the best trimmer as much as possible. 

FAQs about cordless string trimmers

Are cordless string trimmers as good as gas string trimmers?

Cordless string trimmers and gas string trimmers have the same purpose of use, which will help trim grass and remove weeds around trees, houses, buildings, or on your lawn. However, basically, cordless string trimmers are a better option because of the following reason.
The battery-powered string trimmer uses batteries to operate, so it will produce less noise and vibration than the gas-powered counterpart. Moreover, there will be no emissions produced during the working process of the trimmer like from the gas string trimmer, so it is more environment-friendly. It is also low maintenance and easier to operate, so in a nutshell, it will be better to stick with a cordless string trimmer. 

How long can the batteries last?

Typically, a weed eater battery can last between 20 minutes to an hour. It will take about 30 minutes to two hours to fully charge the battery. If you want to expand the life of your trimmer’s batteries, it is recommended to use it completely down and recharge overnight every two months. 

Is a straight or curved shaft trimmer better?

Straight shaft trimmers and the curved counterparts have their own pros and cons, and deciding which one is better sometimes comes down to personal preference and comfort. 
For example, taller people will enjoy the straight shaft string trimmer because the reach is expanded and the power is greater. On the other hand, some people prefer having curved shaft weed eaters due to their light weights and cheaper price. However, there will be some tight areas that cannot be reached by a curved-design trimmer, whereas a straight option can handle with ease. 

Should I get a 20V or 40V string trimmer?

Normally, your trimmer will work more powerfully with a higher voltage. That means a 40V weed eater will work stronger than the 20V counterpart. This is extremely helpful if you want to completely remove the annoying weeds and grass around your large house or building. However, just consider because you don’t always need a too powerful trimmer, which usually costs you more. 

Bottom line

Now you don’t have to carry a cumbersome and large mower to clean your yard, with the help of the cordless weed eater, everything is a lot easier. There are several factors that you need to look for to buy the best appliance for your house. Consider between different brands that we have mentioned above for the top cordless string trimmer: Greenworks 40V 14inch Cordless String Trimmer, WORX WG163 PowerShare 12″ Cordless String Trimmer & Edger, BLACK+DECKER 20V Max String Trimmer/Edger, Makita XRU15PT1 Lithium-Ion Brushless Cordless String Trimmer, and DEWALT 13-inch Cordless String Trimmer. 

Tech Blazes Team

Tech Blazes

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