Best Battery Powered String Trimmer Reviews 2018

Best String trimmer Reviews

Whether you call it a string trimmer or a weed whacker, there are some tools which you pretty much have to have in your shed if you have a yard. We highly recommend that you check out the Dewalt DCST920P1. Modern technology allows us to pick and choose our power source, and the choice for some people definitely doesn’t involved cords. If you’ve been looking into getting a battery powered string trimmer you’re in the right place, we’ve found some of the best and brought them right to you.



Best overall: DEWALT DCST920P1

If you’re looking for the most power you’ll be able to get out of a string trimmer and a long life to handle your yard, this DeWalt trimmer is what you’re looking for.

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Top 5 Battery Powered String Trimmers

Name Power Cutting Swathe
DEWALT DCST920P1 20V MAX 20V 13” Check Price
Weed Eater WE20VT 20V 12” Check Price
BLACK+DECKER LST136W 40V 13” Check Price
GreenWorks 2101602 G-MAX 40V 12” Check Price
WORX 32-Volt GT2.0 32V 12” Check Price

1. Best Overall



Product Rating

For the maximum power available in a cordless trimmer, one option stands head and shoulders above the rest. This battery powered string trimmer from DeWalt will make short work of all but the toughest bushes and weeds and it’s compatible with any other 20V DeWalt tools.

Of course, this comes with some cost. The brushless motor makes the whole thing weigh in at 14lbs which leaves it as the heaviest option on this list.

Included in the pack is a 20V 5.0 mAh battery which will keep things going for a long time, enough to finish off almost any yard you’d want to tackle with a string trimmer. You can get about 60 minutes of continuous power if you keep it on the lower setting.

Unfortunately, the guard isn’t increased in size. With that much power behind it, you’ll definitely want to be wearing long pants since it has a tendency to “spit” anything it hits at a high velocity.

Pros and Cons

  • High powered
  • Long battery life
  • Reliable and durable
  • Compatible with DeWalt 20V tools
  • Rapid charging
  • Small guard
  • No edging capabilities

2. Best Budget Option

Weed Eater WE20VT

Weed Eater WE20VT

Product Rating

The Weed Eater WE20VT is a solid, dependable trimmer which lacks a lot of frills but makes up for it with a rock bottom price.

This 20V tool has a 12” cutting area and enough power to get through the weeds that inevitably arise in most yards. It also has edging capabilities. You can turn the trimmer over and use the guard to allow you to make short work of the edges of your yard and end up with a clean finish.

One of the best parts about this string trimmer is that it only weighs 5lbs and comes with bump feeding so you don’t have to stop when you’re working on your yard.

Unfortunately, the battery only lasts for around 30 minutes of continuous cutting which makes it hard to recommend for those who have a large yard.

If you’re looking for a lightweight trimmer for edging and occasional maintenance, or a cheap solution for a small yard, then the Weed Eater WE20VT is the optimal solution.

Pros and Cons

  • Lightweight
  • Edging capabilities
  • Telescoping shaft
  • Cheap
  • Bump feeding
  • Short battery life
  • Suitable for light duty only

3. Best Lightweight Trimmer



Product Rating

The Black+Decker LST136W is an advanced battery powered trimmer which costs a premium but has some serious power and capabilities. It’s powered by a 40V Li-Ion battery with a long life and some serious power behind its 13” swathe.

The two speed trigger allows you to pick between conserving battery and delivering more power to the auto-feed head while you’re working. Keep it set to the lower option to conserve battery and handle errant grass and turn it up to make short work of burlier weeds at your discretion.

With a quick twist of your hand, you can also convert it to an edger in order to clean up the edges of your yard and along fences. It’s also fairly light, weighing in at 6.8lbs, which will allow most people to wield it and get the precision they need.

The only real drawbacks are the finicky safety trigger and the fact that the spools can get rather expensive. If you avoid scraping off all your string on rocks and concrete, however, you should be good to go.

Pros and Cons

  • Lightweight
  • Long battery life
  • Edger conversion
  • Auto-feed head
  • Power dial
  • Short battery life
  • Suitable for light duty only

4. Best Value For The Money

Greenworks 12-Inch 40V

GreenWorks 2101602 G-MAX 40V

Product Rating

If you’re willing to put up with a little bit more weight in exchange for a whole lot more power, then this trimmer from GreenWorks has you covered. With a 40V Li-ion battery you won’t be short on power, and a 13” cutting area will let you handle things in short order.

Of course, the cost of the heavy duty motor comes in weight, the trimmer weighs in at a hefty 9.2lbs which is enough to leave even a hardened gardener a bit sore by the time the power has run out.

The head rotates as well allowing you to edge easily with the powerful motor, although you might want to go a bit light on the trigger to avoid using excessive amounts of string.

This is a balanced trimmer, allowing you a ton of power and utility at a great cost. Those who get sore easily may want to find something a bit lighter however.

Pros and Cons

  • 13” cutting swathe
  • 40V 2.0 mAh battery included
  • Converts to edger
  • Automatic feed
  • Suitable for medium duty
  • Heavy
  • Shaft is a bit long

5. Best All-in-One System

WORX 32-Volt GT2.0

WORX 32-Volt GT2.0

Product Rating

If you’re planning on relying on one tool to handle your entire yard, the WORX 32 VOLT GT2.0 is a 3-in-1 trimmer that will allow you to make short work of almost any small yard.

The included wheels allow it to act as a precise mower to keep your lawn level, you can convert it to an edger, and the powerful motor works as a string trimmer should. All of this is powered by a long lasting battery.

It’s a quiet running tool as well, so you won’t have to deal with the irritating blaring that some tools produce. You can also change the length of the shaft so it’s perfect for your height.

There are two unfortunate drawbacks, the unit feels “cheap” in your hands although it’s still quite sturdy and the WORX line which is included has a tendency to cause problems. If you can avoid dropping it and pick up a spool of quality line, however, you’re in good hands.

This WORX trimmer is best suited for those who want an all-in-one system to handle a normal sized lawn on a regular basis, for heavier duty projects you’ll want something with more power.

Pros and Cons

  • 3-in-1
  • Quiet
  • Long battery life
  • Telescoping shaft
  • Auto-feed
  • Comes with cheap string
  • Middling build quality

Is a Battery Powered String Trimmer Right for Me?

Not every yard is a good for a battery powered trimmer, they do have some disadvantages that come along with their increased maneuverability. They’re recommended for those with a small yard that can be gone over quickly.

If you’re going to have to handle a larger yard it’s a good idea to invest in an extra battery or two so you can make sure you get everything done in one clean pass. As long as you’ve got the juice they’ll make short work of weeds and grasses without you needing to fuss.

Battery powered trimmers lack the power to cut down heavy brush. It’s an unfortunate reality, but if you were planning on using one to clear up hedges or other thick plants then you’ve got another thing coming.

For a small to medium sized yard populated only by grass and weeds, however, they’re probably the best way to edge and trim without having to deal with bulky extension cords or figuring out the right oil and gas mixture to run a two-cycle engine with.

If you elect to go with one of these they’re also an economical choice. They’re lower maintenance than gas trimmers as well, and you won’t have to worry about running to the nearest gas station if you run out of power.

What to Look For in a Battery Powered Trimmer

It can seem like there’s not a whole lot to differentiate battery operated string trimmers from each other, but nothing could be further from the truth. Small, seemingly cosmetic features can make for a pretty big difference when it comes time to actually get down to beating back the weeds.

For the most part, they’ll be similar in power but keep an eye out for the following features.

Shaft Type

The shape of the shaft can make a big difference when you’re weeding. The main difference is going to be in whether it’s curved or not.

Curved shafts are great if you need to get around fences or other hard features in your yard. The curve will allow you to nimbly move around these and get close to them without snapping off any excess line. They’re particularly useful in confined areas.

Straight shafts are good for getting under objects. Whether it’s a deck or a table, they’ll allow you to trim under objects much more easily than with a curved shaft.

Overall, you’ll have to decide which the best for your yard is.

Cutting Swath

The best string trimmer for home owners

The cutting swath of the trimmer tells you how wide it will be able to cut. For the most part, a cordless will have a smaller cutting area than options with more high power, but the larger the area you’re intending to cut is, the bigger you’ll want.

Smaller swaths still have their use. If you have a lot of hardscape in your yard, like rocks and fencing, you can get around them more easily with a smaller line.

Variable Speed Trigger

While often overlooked, being able to control the speed of your trimmer with the trigger has a number of uses. A simple on/off switch will simply have your trimmer constantly running at the highest speed the motor can handle, which will also drain the limited battery quite quickly.

With a variable speed trigger you can extend the life of your battery by using it lightly in open areas with grass and pulling a bit harder if you hit denser patches of weeds. If you’re planning on a bigger yard with a lot of open area, it’s an indispensable feature.

Edging Features

While pretty much any trimmer will let you clean up the lines around the edge of your yard, some make it easier than others. The best for this purpose will have a straight shaft and a rolling section on the head to allow you to roll it along the edge.

You’re not out of luck entirely if you don’t have these, but if you’ve got a long driveway to edge you’ll be thankful for the extra precision by the time you’re done.

String Types

While most battery powered string trimmers will have you working with light line, there’s another factor to take into account.

Bump loading strings are the most common, when the spool needs to allow more line to come out, you simply “bump” the head of the weed eater into the ground to release more line. It’s fairly easy, but they can become problematic for some people.

Automatic string advance trimmers continuously release the line which means you don’t have to spend nearly as much time thinking about it. There’s really no disadvantage here, it just makes the process easier and might cost a bit more.

Individual loading strings allow you to quickly and easily place short lengths of trimmer line into the head and replace them. This has the obvious advantage that you don’t have to mess with changing or winding reels, which is one of the main problems people run into when using these tools.


The handle and any anti-vibration features are usually a welcome relief for the user of a trimmer. You’ll be out in the sun for a good amount of time using it, and a bad handle can make for an unwieldy and difficult to use tool. This might be the most important factor as long as it runs, if your trimmer is a pain to use you’ll be using it less.


Once you know what you’re looking for, you’ll be glad that you’ve added a trimmer to your collection of garden tools. Whether you just need one to bust back an infection of overgrown dandelions or you’ve decided to level out all the grass in the yard they really can be a gardener’s best friend.




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