Top 5 Best Cordless String Trimmer Reviews & Buying Guide 2019

Top 5 Best Cordless String Trimmer Reviews & Buying Guide 2019

An unkempt garden/yard is the worst of all. Do you think your guests would enjoy having a cup of tea in a garden that resembles a literal rainforest?

Still not convinced? Well, disheveled, overgrown grass isn’t only unsightly, but it’s also home to insects, and hazards that could potentially kill you.

Well, on second thought, that’s a bit far-fetched, but this stuff could make you really sick, okay?

Owning a top-notch string trimmer is an easy method to keep your lawn trimmed, clean and tidy. There are so many types out there, in this article, I’ll be reviewing the top cordless string trimmers.

As the name suggests, cordless trimmers won’t restrict your movement. They don’t emit fumes and don’t produce much noise.

If you think these are the ones for you, stick around and let’s get started. 

Top 5 Best Cordless String Trimmers

Tried and tested, I’m here to deliver you the best options on the market. I’ve put in mind the variety aspect so never fret; you’ll surely find one that suits your needs and desires, as well as your budget.

1. GreenWorks 2101602 G-MAX 40V

GreenWorks 2101602 G-MAX 40V

This G-MAX from GreenWorks is powered by a monstrous 40V Li-ion battery, so worrying about running out of power is a thing of the past. 

The G-MAX also features a decent 12’’ cutting area, so you won’t be moving it around a lot, you let her do the job.  

However, with such a big battery comes an equally big motor to properly deliver all that power. 

The GreenWorks 2101602 weighs a bulky 9.2 lbs, so if that’s a gift for your grandpa please rethink your life decisions. It’s a weight enough to make a hardcore gardener a bit sore after the battery dies. 

The GreenWorks is also a perfect candidate for edging your lawn, but take care to not go too overboard with the trigger in order to avoid massive string loss. 

The one downside about the GreenWorks is that is had some trouble with handling tough weeds and woody shrubs. However, the average lawn is by no means an issue for the G-MAX.

What We Like:

  • A ton of power delivered by 40V battery
  • 12’’ cutting range
  • Can edge grass
  • Easily tackles the average lawn
  • Run time of up to 30 minutes
  • Spacer Guard to protect lawn ornaments

What We Don’t Like

  • A bit heavy for those who get easily sore
  • The shaft is a bit on the longer side
  • Not heavy-duty as other counterparts of the same price range
WORX WG163 GT 3.0 20V PowerShare 12 Cordless String Trimmer & Edger

You should really put this into consideration if you’re looking for some quality string trimmer at a budget price.

This WORX GT 3.0 features 2 lightweight 20V MaxLithium batteries powering its motor to a 7600-rpm no-load speed. It also features strings that are super powerful with their 10’ cutting string trimmer line length and an 0.065’’ line diameter. Add to this a 12’’ cutting diameter and it becomes a yard coiffeur!

WORX GT 3.0 comes at an overall weight of only 5.3 pounds!

You can easily switch between trimmer and edger functionalities at a blink by flipping the machine. It becomes a wheeled-edger in mere seconds.

These rubberized wheels provide you assistance in your lawn edging process, giving you cleaner finishes and straighter lines. They also help you reach every cranny and nook.

The WORX GT 3.0 also includes a built-in spacer guard to protect ornamental plants and landscape features whilst trimming your lawn.

What We Like

  • Budget-friendly price
  • Wheeled-edger for accurate lawn edging
  • Rubberized wheels
  • Spacer Guard
  • Lightweight

What We Don’t Like

  • Doesn’t suit heavy-duty work as it’s underpowered
  • Battery life is a bit short, barely reaching 20 minutes
BLACK+DECKER LST136W 40V MAX Lithium String Trimmer

From the reputable quality brand, BLACK+DECKER, LST136 is a lightweight string trimmer weighing only about 6.8 pounds.

These 6.8 pounds are evenly distributed to prevent fatigue and the well-known back and shoulder soreness that ensues after trimming.

The LST136 features a powerful 40V battery to combat any pesky grass leftovers, and a cutting range of 13’’ so you won’t have to wank it around, it just does its magic on its own.

It’s an edger as well, and switching is no hassle. Just tilt it to a 90-degree angle and enjoy having a perfectly-manicured lawn.

Now, the highlight of this product is this: The PowerCommand feature. This allows you to control power delivery on demand. For instance, if you’re dealing with tough weeds, switch your LST136 into Max Power setting and it will chop down everything in your path. 

You can also make use of the Max Power setting to finish trimming off a rather small garden in the shortest period possible.

If you have a garden that only requires simple trimming, go on and switch Max Runtime and the battery will provide you with extra runtime and less power to accommodate your garden’s small needs.

What We Like:

  • PowerCommand Feature which controls power output
  • Lightweight and stable
  • 40V battery
  • A reasonable price for a high-quality machine

What We Don't Like:

  • Not suitable for heavy-duty jobs
  • Tends to wear through the strings easily
GreenWorks ST80L210 80V String Trimmer, 2.0Ah Battery & Charger Included

This GreenWorks Pro is a beast, literally. It’s designed to be on par with gas string trimmers without the nasty disadvantages, and it does deliver. 

It features a run-time of 45 minutes on an 80V battery. If the battery runs out, it can be fully recharged in only 30 minutes. 

The cutting range is an impressive 16’’, this astounding range means that you’d finish your garden in the least time possible. 

The GreenWorks Pro features a brushless motor, thus, providing you with extra torque, higher trimming efficiency, amazing cutting power, and longer durability. 

It’s far lighter, weighing only 9.8 pounds. It’s also less noisy and vibrates less than the standard gas trimmer.  

This GreenWorks Pro allows for compact storage through its split shaft. Its motor is front-mount for superior weight distribution and ergonomics. 

What We Like:

  • A powerful 80V battery
  • Super short charge time
  • Long battery life of 45 minutes
  • 16’’ cutting range

What We Don't Like:

  • It still isn’t as on the same caliber of a gas trimmer
  • The trimmer guard is a bit impractical as it throws clippings randomly
WORX WG170 GT Revolution 20V 12" Grass Trimmer/Edger/Mini-Mower

Now, did you expect that? A machine that’s not only a grass trimmer and wheeled-edger, but also works as a mini-mower. A 3-in-1 machine that’d satiate all your yard’s manicuring needs.

It’s tremendously versatile, with 7 handle positions and 6 rotating head positions. The machine comes with two 20V batteries, so you can keep the thing running for the longest time.

The WORX Revolution features a telescopic shaft in order to adjust to the user’s height and posture. The item is extremely lightweight, only about 5.49 pounds, which is darn amazing.

You can switch between the 3 functionalities with extreme ease, no tools required, no hassle in the slightest.

The machine also features a cutting diameter of 12’’, you’d finish all your yard work without fatigue. 

What We Like:

  • 3-in-1 functionalities and simple switching between them
  • Extremely lightweight
  • Includes 2 batteries
  • Comfortable, ergonomic handle

What We Don't Like:

  • It takes 3 hours for the battery to fully charge
  • One battery lasts only 35 minutes
  • Only suitable for light to moderate use

What Should I Keep in Mind Before Buying a Cordless String Trimmer?

Put these aspects in mind when looking for a nice cordless string trimmer to be your yard manicuring companion.

Battery Life and Power

Deciding on battery life is dependent on your yard’s size, and how much work you think it’ll need. 

Most batteries that come with string trimmers have a battery life of 30 minutes or more. However,  just like motor power, as the battery life increases, the unit tends to be more expensive. So I think you should opt for buying one that precisely would suit your yard work needs. 

If you’ve got a small yard that’s manicured in 15 minutes, don’t go buying a unit of 1-hour battery life, it’s meaningless.

As for the battery power, the more it is the more your unit would be able to tackle tougher jobs. So an 80V powered unit would be much tougher than a 20V unit. Deciding which to go for is also dependent on how tough the work around your yard is. 

Battery Charging Duration

Some batteries require many hours to fully charge, some charge right away. Decide on this depending on how long runtime is and whether it’d suffice your yard or not.

If runtime isn’t as long, and you’d require multiple charges to finish your yard, then it’d be so annoying and impractical to have a unit that takes hours to charge. 


That’s probably the utmost important point when it comes to choosing your cordless string trimmer.  

If your yard’s on the bigger side, you’ll be using your string trimmer for prolonged periods so weight is crucial. And it isn’t only about weight, it’s also about weight distribution. 

The unit may be feather-light, but its overall weight may be badly distributed making you end up with a cramped shoulder after only a couple of minutes. 

Another important aspect is the handle. Again, your unit may be so lightweight, but the handle’s in an awkward position that might ruin your entire experience. 

Cutting Range

To understand cutting range, I want you to imagine a core with 2 strings protruding from it on both sides. That core is rapidly spinning, just like a fan, making it seem like a complete circle. 

The cutting range is the diameter of this imaginary circle, measured in inches.

It may seem like bigger is better regarding cutting range, but you may want to opt for a smaller cutting range if you have rocks and fencing around your garden. 

Speed Control Dial

That’s essential to maintaining your battery life. An on/off switch bumping your unit’s motor to its highest capacity will do nothing but drain your battery in no time. 

Ideally, there should be a control dial in your unit so that you conserve as much energy as you could. Only use high settings when you need more power. 

Winding Strings

String trimmers also differ regarding the way strings are inserted into the unit.

Bump Loading Strings

Strings are wound into a reel that’s inside your trimmer’s head. These strings are consumed as you work through your yard. 

When you notice your string’s lessened in length, you simply bump the head of the weed eater into the ground to release more string line through the spool. 

However, when the strings inside the reel are completely consumed, you’ll have to open up the head and re-string the reel. This may be problematic for people who aren’t into mechanical stuff. 

But generally, restringing the reel can’t get any simpler if you see how it’s done and give it a try. 

Automatic String Advance Trimmers

There’s no manual work here, the unit does all the work for you.

Individual Loading Strings

These allow you to simply cut small lengths from your string package and insert them as they are inside the head of the unit. No need to bother with a winding reel or anything like that. 

Best Brands

I’ll be presenting you with a briefing on 2 of the best cordless string trimmer brands.


It’s a company that’s all about innovation. Their passion to create what’s new is what drives them to work hard. They mainly specialize in power tools that help users get the job done in the best way possible.


They’re all about gardening machines and tools. Greenworks is a global company with multiple offices in the US, Sweden, and Canada. 

They make their products in their own factories, and they also have top-notch test facilities to deliver the best to you.


How does a string trimmer work?

A string trimmer works based on the principle of centrifugal force. 

When the string is spun rapidly, it becomes extremely stiff as the spinning core holds it alongside another opposing force that acts on it due to rotation. It becomes powerful enough to cut weeds and the like. 

Is the string trimmer line biodegradable?

It’s mostly neither biodegradable nor compostable. 

There have been some companies trying to produce biodegradable string trimmers to help prevent polluting yards with plastic bits resulting from trimmer use. 

However, they aren’t as strong as standard plastic string lines, so I wouldn’t recommend them for the time being. 

The Bottom Line

I’d go for the BLACK+DECKER LST136 as a top pick. What’s truly caught my attention about it is its PowerCommand functionality that isn’t abundant in many string trimmers. The LST136 provides top-notch performance with an extremely lightweight body. 

If that’s a bit too much price-wise, I’d go for the WORX WG163 GT 3.0, with its amazing capabilities of 7600 rpm, 12’’ cutting diameter coming at a great price and feather-light weight.