8 Best Cordless String Trimmer Reviews 2019 | Lawn Edging & Weed Wacking Easy To Use Power Tools

String trimmers- also known as weed eaters, weed wackers, or lawn edgers- are one of the most useful garden tools for creating well-manicured edges and getting rid of unwanted weeds. Originally designed with only gas-powered models, there is no doubt that the best cordless string trimmers have come a long way from just being tools that help clear weeds from your yard.

Top 3 Cordless String Trimmers

Editor's Rating: 4.7/5

  • It can cut through tough and overgrown grass
  •  4-year warranty
  •  Compatible with different gas attachments

Editor's Rating: 4.5/5

  •   It has an excellent 3-year warranty
  • Converts easily from a trimmer to an edger
  • It has an automatic single line feed

[Best Ergonom​​​​​​​​​​​ic Cordless String Trimmer]

3. Makita XRU02Z 18V LXT Lithium-Ion Cordless String Trimmer

Editor's Rating: 4.4/5

  • The shaft is adjustable from 48 ½" to 56 ½"
  • Easy to use for prolonged hours because of its lightweight
  • Adjustable 5-position head for different surfaces

Electric trimmers- whether the corded or cordless weed eaters- have completely changed how we see lawn trimming.

For instance, with these tools, you can now throw away your noise-canceling headphones while trimming those ragged edges. An electric battery-powered weed eater is noiseless (some are rated 85dB), weighs less (13 pounds or less), and comes with zero emissions.

Also, thanks to the "push to start" feature that most of them have, starting your trimming process is more comfortable and much faster.

If you're trying to upgrade, check out our review of the best cordless string trimmer.

What to Look for In A Cordless String Trimmer

Just as it is with other types of electric string trimmers, cordless string trimmers are relatively better than gas and corded trimmers in terms of weight and portability, low-maintenance and cost.

However, before buying a cordless string trimmer, consider the following features to help you in your selection process:

•    Shaft Type: There are two main types of electric weed trimmers; the curved-shaft, and the straight shaft. The shape you pick determines a lot about your lawn. Curved shafts are ideal for short people and for trimming around fences or other surfaces in your sidewalk. On the flip side, straight shafts can get under bushes, shrubs, and other tight corners because they have a longer reach and are better for tall people.

•    Cutting Swath: The cutting swath of a cordless weed wacker can either wide be wide or small. The broader the swath, the more space you'll cut. Cordless units usually have a small cutting area that other options with more horsepower. The bigger your yard, the bigger the cutting swath should be.

   Edging: An electric weed wacker is also a good edger, but some are better than others. For a right edge around your yard and driveway, you'll need a straight shaft and a rolling section on the head for appropriate edge trim.

   Speed Control: The ability to control speed is one of the significant qualities of the best string trimmers, and it has a ton of benefits. An on/off switch will only run your trimmer on high speed which will eventually drain the power faster. Hence, a variable rate can extend the limited battery life, by allowing you to toggle between high and low speeds. Lower speeds can be used for light duty weed removal and higher speeds for tougher weeds or overgrown grass. Most cordless trimmers have 5000 to 9000 RPM speeds.

•    Voltage and Amps: A good cordless electric edger should have high-voltage batteries. This gives the trimmer more power, which means tackling tougher jobs.

•    Balance and Ergonomics: A trimmer should feel well-balanced when in use. Also, its weight should be evenly distributed from top to bottom or a little heavier at the top. Ergonomic-wise, the trimmer must have a good handle and low-to-zero vibrations.

•    String Type: A weed eater string needs to be easy to re-string, and it must also have excellent line-feed capabilities. You must also take into consideration the width of the cutting path when looking for an electric trimmer. The trimmer must be able to cut a wide area with one slash and narrow enough for tight spaces. The average cutting path is 13.5 inches wide.

•    String Trimmer Heads: There are two types of battery-operated weed eater heads; Automatic, and Bump Feed. Automatic feeders cost more, but they'll save you time. However, with bump feeders, you'll need to bump the head of the trimmer into the ground to release more lines and quite easy to use.

•    Diameter: There are light-duty battery weed trimmers (0.065-0.80 inches for light cutting), medium-duty battery weed wackers (0.085-0.105 inches for denser weeds), and heavy-duty trimmers (0.110-inches upwards for commercial jobs).

•   Warranty and Customer Service: Most trimmers have a one-year warranty, and only a few exceed that benchmark. Customer service needs to be top-notch for repairs, and there should be phone and email support as well.

          Editor's Rating:

4.7/5

Greenworks 14-Inch 40V Cordless String Trimmer takes the lead in this guide. It fits all the best features of a cordless string trimmer into one 40-volt piece of garden equipment.

The average cut path for a cordless string trimmer is 13.5 inches. However, this trimmer exceeds that, with a 14-inch cut path for quick trimming time. You can trim more space and yard with its 60 mins run time, and since it only weighs 15 lbs., you'll be cutting more space with less strain.

It has a medium and dual line length of 0.080, cutting through tough grass and tall and overgrown lawns effectively. You'll have to give this trimmer a bump on the ground to get more line feed, which is a quick way to get two equal lengths of string. Make sure not to bump the head too hard as it can cause damage.

We loved the brushless motor on this unit, you won't have to bother about the brushes wearing out or replacing the brushes, and they are highly efficient with greater torque, quieter and battery-saving. Instead of brushes and commutators, brushless brushes have a small circuit board that coordinated the energy delivery to the windings.

The Greenworks 14-Inch cordless trimmer is also attachment capable with gas-comparable performance. You can switch the head to a cyclone blower, cultivator, edger, disk blower, hedge trimmer, and pole saw.

This means you get a 6-in-1 with this model especially if you're not interested in having so many garden tools your home shed.

The downside of this tool is that it does not come with a battery, this means you'll have to buy the battery separate for an additional cost. You can choose between a 20v, 24v to 40v lithium-ion battery with different price ranges. It is also compatible with battery models 29462 and 29472 and charger 29482.

Greenworks has a whopping four-year warranty for repairing and replacing the parts in the case of any defects, which is a considerable amount of time.

Things We Liked

It can cut through tough and overgrown grass

4-year warranty

Compatible with different gas attachments

Brushless motor; making it quiet and lightweight

Things We Didn't Like

The assembly instructions might be hard to follow, its better to watch an online video

          Editor's Rating:

4.5/5

The WORX WG154 20-Volt Li-Ion Cordless Grass Trimmer/Edger is almost half the price of the Greenworks trimmer. This unit has half the voltage power of the Greenworks 40V: It has a 20 V Max-Lithium battery. However, the WORX's 20V battery, makes it lightweight and but still powerful enough to trim your yard effectively.

You can also skip on buying an edger with this 2-in-1 tool, that doubles as both as an edger and a trimmer. You can use the edger to trim smaller and tighter spaces like between gaps on your sidewalk and driveway and use the trimmer around garden beds and other areas, allowing you to switch in a matter of seconds.

This model has a good advantage over the Greenworks trimmer because it allows you to change the cutting width with the flip of a switch. The WORX has a 12" setting for a larger cutting path and a 10" setting for smaller areas.

The 10" setting also means that you can save battery life and extend the run time. However, our top pick has a 14" cutting path which makes trimming larger areas faster.

This model has an automatic single line feed, which means it extends the line automatically when it is running out. It also has a foldable spacer guard to protect your lawn ornaments, garden, and fence from damage.

The WORX WG154 is lightweight weighing only 7.9 pounds for prolonged use. It has a low duty line length of 0.065", so it might be only suitable for light cutting and trimming.

One big complaint on this model is the edge feature. You'll have to hold down two buttons and tilt the trimmer upside down to use, which is uncomfortable.

You get a 3-year warranty with this model, which is long enough to notice any defects for an exchange.

Things We Liked

It has an excellent 3-year warranty

Converts easily from a trimmer to an edger

It has an automatic single line feed

It is lightweight

Things We Didn't Like

It doesn't have the capacity for overgrown weeds or lawns

          Editor's Rating:

4.4/5

The Makita XRU02Z 18V LXT Lithium-Ion Cordless String Trimmer earns a good spot as the best ergonomic cordless string trimmer because of its lightweight weighing only 6.4 lbs and adjustable loop handle that's designed to suit any height and working posture.

The Makita only has 18-volt lithium ion battery, less than our first and second option, but still powerful enough for cutting yards and sidewalks. However, the battery charges faster and delivers 7, 800 RPM for more rapid cutting and has up to 45 minutes of run time from a single charge.

We thought the adjustable 5-position pivoting head of this model was a nice touch; it allows you to adjust the cutting angle when you get between light spaces on your lawn or sidewalk.

The Makita trimmer has a bump and feed feature, much like the Greenworks model, for convenience. When the battery is running low, you'll see an indicator light, engineered to stop the motor and remind you to recharge the inbuilt battery.

We also liked the 180-degree rotating head on the Makita that converts the trimmer to edger swiftly with a 10 ¼" cutting width which is not as extensive as our first pick, and not adjustable like the WORX but ideal for small areas that do not require high power.

Like the Greenworks, this model is also tool-only; you'll need to purchase the battery separately.

One of the downsides of this model is its single line string, which means it will be slow and won't work well on tough turfs or overgrown lawns. Only use this model for trimming light areas and edging.

The Makita is 56 ½" in length which is long enough for most people and will not require you to bend over. You also get a 3-year warranty with this product.

Things We Liked

The shaft is adjustable from 48 ½" to 56 ½"

Easy to use for prolonged hours because of its lightweight

Adjustable 5-position head for different surfaces

Delivers 7, 800 RPM and runs for up to 45 minutes

Things We Didn't Like

It can be too slow

          Editor's Rating:

4.2/5

The Worx WG160.9 GT 2.0 20V PowerShare trimmer is another excellent garden tool from WORX. This company makes quality products that we can trust to produce the best results.

The Worx WG160.9 GT is the first 3-in-1 model in the guide. It features dual-position wheels for grass trimming, edging and mowing, so you can forget about buying other garden tools when you get this model.

This model has a 12-inch cutting diameter, 2 inches less than our top pick, but it still gets the job done effectively. It also weighs less than the Makita, at only 5.7 pounds which means less strain on your hands and back, lightweight and ergonomic.

We loved the quick-release lever that allows for quicker telescopic height adjustments for the 90-degree tilting shaft. It also has a dual-function flower spacer that pushes delicate plants and ornaments out of the way, preventing damage.

Unfortunately, 20 V lithium battery can only last for 20 minutes before you'll have to recharge again and it also needs 3 hours of charging time, which means you'll be charging the WORX for every 20 minutes for 3 hours. You'll only appreciate this model if you have a small yard.

The head of the WG160.9 can tilt to a full 90 degrees, allowing you to reach tiny corners and spaces. You won't need to bump the head of this tool on the ground to get more string as it has a 100% single line feed.

You'll get a three-year warranty with this model as well, and 30-day money back guarantee.  As of the time of this guide, the WG160.9 was unavailable.

Things We Liked

This model is very lightweight- 5.7 pounds

Does not produce any vibrations and makes less noise

It is a 3-in-1

It has an adjustable height

Things We Didn't Like

One-year limited warranty

          Editor's Rating:

4.2/5

This is another product from Greenworks; a little bit pricier than our first pick, but just as powerful.

The Greenworks PRO also has a lot of better features than our first pick. It is powered by an 80V Li-ion technology, which means you're getting a powerful weed wacker that can cut through the toughest turfs.

This model also uses the same brushless motor our best pick features. With the brushless feature, you get greater torque power, quieter operation, and increased battery efficiency.

The battery is equivalent to a 32-cc gas engine, with rapid rotation, and a 4AH cell that provides you with 45 minutes of operation. It also uses two threads of 0.08-inch line, which means that it can tackle difficult edges and overgrown lawns.

Like most electric cordless trimmers, this trimmer requires less maintenance and has a light and simple electric start. However, perhaps the best feature of the trimmer is its incredible 14-inch to 16-inch cutting swath. This ensures faster and more effective lawn trimming.

Sadly, however, this trimmer is quite heavy for prolonged use, as it weighs a hefty 18 pounds.

It has a retractable flower guard, which protects your flowers and other yard essentials from damage.

The disadvantage of this model is its 20V battery. Just like most 20V batteries, it only lasts from 15 to 20 minutes with a charging time of 1 hour. So, you'll enjoy this model much more if you can purchase additional batteries.

Things We Liked

This is a heavy-duty trimmer

16-inch clearing path

80V of battery power

45 minutes of battery use

Things We Didn't Like

Might be too heavy for some people

          Editor's Rating:

4.3/5

The Ryobi 18V One Plus Line Trimmer Bare Unit has an 18V battery, which has one of the lowest capacities in this guide. However, it weighs only 6.65 lbs, and it can clear up to 1/3 acres of land.

It has a rotating straight shaft for getting into tricky corners, and its height makes it suitable for taller people. You can use it to trim and edge around your yard.

The cutting width is adjustable from 10 inches to 12 inches, and you only get a line diameter of 0.065 inches. This means that this model is only capable of low-duty trimming on small yards.

Most users complained about its difficult-to-assemble nature and the lack of an easy-to-follow manual. However, if you find it hard to assemble this model, there are many videos online to aid you through the process.

Things We Liked

This model is lightweight

It has an adjustable cutting width

Easy to replace strings and well balanced

Shaft rotation for easy edging

Things We Didn't Like

The length might be too short for taller people

          Editor's Rating:

4.2/5

If you're familiar with garden tools, then you've probably heard of Toro. However, this garden tool also doubles as a brushless DC motor, which means it has more power and can last longer.

It features a 0.080-inch line diameter with dual cutting lines. Also, like most straight-shaft trimmers, it can get into tight areas, and it is suitable for taller people.

However, this model is not attachment-capable, even though it has a flower guard like most of the other models to protect flowers and other delicate garden elements from damage.

This electric weed eater has a 40V battery power like out best pick which gives it more power and running time. You can use this model for a prolonged period, weighing only 9.2 lbs. You can change the speed with the variable speeds- lower speed for more extended use, and higher speeds for faster cutting.

Although the battery is sold separately, it lasts for 40 minutes, with a 60-minute quick charge.

Things We Liked

Easy to assemble with a clear manual

It is well-balanced out of the box

The 40V battery is powerful for tough terrains

It is lightweight

Things We Didn't Like

It is quite expensive

          Editor's Rating:

4.2/5

The WORX WG155 is also a 2-in-1, just like our second pick. The 20-volt trimmer gets points for being lightweight, yet powerful enough for yard and garden trimming. It also makes it easier and faster to switch between the trimmer and the edger.

The WG155 has an adjustable handle and shaft for varying heights. It also has a "push to start" feature, which helps you to start the engine quickly. However, note that before using this model, you'll need to charge it like any other battery powered trimmer.

The Lithium-powered battery technology allows the batteries last longer, and they are also lighter and more compact. The WG155 also has rubberized twin-set wheels, which help you easily maneuver through your lawn.

It has a retractable flower guard, which protects your flowers and other yard essentials from damage.

The disadvantage of this model is its 20V battery. Just like most 20V batteries, it only lasts from 15 to 20 minutes with a charging time of 1 hour. So, you'll enjoy this model much more if you can purchase additional batteries.

Things We Liked

It has in-line wheels and converts easily

It has an automatic line feeder

Fully adjustable telescope shaft

Strings made from quality material for less wear

Things We Didn't Like

The battery does not last for long