Trying to lug a massive lawnmower out of storage every few weeks is such an ordeal just to cut your lawn. But grass can get overgrown fast and weeds can easily overtake your landscape if they’re not taken care of, so there seems like no other option.

While a lawnmower is pretty efficient, it doesn’t quite do the job of trimming the borders and edges of your lawn so they look nice and neat.

This results in you having to awkwardly maneuver the lawnmower on its side to reach those areas or making a round with the garden clippers to trim all the edges.

This process is somewhat tedious and takes way longer than it should, but thankfully, it’s not the only solution to cutting your lawn.

Cordless string trimmers and weed eaters (sometimes called weed whackers) are a saving grace when it comes to keeping your lawn and yard in top condition throughout the season.

Below, I’ve compiled my research and experiences to bring you the best cordless trimmer and weed eaters around.

Disclosure: If you shop from my article or make a purchase through one of my links, I may receive commissions on some of the products I recommend.

Best cordless trimmers and weed eaters

1. WORX 20V PowerShare 12″ Cordless String Trimmer & Edger

Worx String Trimmer Cordless GT3.0 20V PowerShare 12' Edger & Weed Trimmer (2 Batteries & Charger Included) WG163

My top pick for the best cordless trimmer is the Worx 20V string trimmer, which also doubles as an edger so you can even reach more difficult areas of your lawn. This is the string trimmer I personally use in my own yard, and I’ve found it to be a good balance of maneuverability and power.

The unit is super lightweight and weighs less than 6 pounds (even with the battery attached), so it’s comfortable enough to carry around without getting sore arms when doing longer or bigger jobs.

It’s designed with a telescopic shaft so you can adjust the height of the unit to suit your own height, and also extend it full length to reach areas farther out in your yard.

The Worx 20V cordless string trimmer comes with an additional battery so you can swap out the one you’re using with a fully charged one. That means you no longer have to sit around and wait for the battery to recharge when you’re on a roll!

As a bonus when purchasing this string trimmer, you’ll get free spools of string from Worx for life so you won’t have to worry about buying any more in the future.

The battery life is nothing to write home about, but with the benefit of having two batteries included, these pretty much add up to one longer-lasting battery.


  • Lightweight: Easily carried around for long periods
  • Telescopic shaft: Can access hard-to-reach areas easily
  • Comes with two batteries: Can alternate to do larger areas of your lawn
  • Versatile: Converts to an edger to tidy borders


  • Battery life is mediocre: Will only last for 30 minutes when fully charged
Worx String Trimmer Cordless GT3.0 20V PowerShare 12" Edger & Weed Trimmer (2 Batteries & Charger Included) WG163
  • [TRIMMER & EDGER 2-in-1] Easily converts from a string trimmer to an edger lawn tool in just seconds
  • [INSTANT LINE FEED] This grass trimmer has innovative push button Command Feed spool system for instant line feeding. Plus, Free Spools for Life
  • [HEAD TILTS 90°] So you can use string trimmer and edger on sloped terrain, and get to tough-to-reach places
  • [RUBBERIZED WHEELS] Support and guide the edger, giving you straighter lines and cleaner cuts
  • [SPACER GUARD] Adjustable, so you don't damage plants, landscape features, and lawn ornaments while you're using the lawn trimmer

2. BLACK+DECKER 20V MAX String Trimmer

BLACK+DECKER 20V MAX* String Trimmer / Edger, 12-Inch (LSTE523)

This 2-in-1 trimmer and edger by Black + Decker has a 12-inch swath that can cut a large surface area in less time, saving you on battery power and also time spent on tidying your yard.

It has an adjustable height and handle to suit each user for ideal comfort, so you won’t experience discomfort or pain when handling this unit.

The easy string feed allows the user to advance the line with just a push of a button with no bumping needed.

The trimmer easily converts into an edger without compromising on safety, so you can feel assured that no accidents will occur.

The single line included is a bit flimsy and may struggle to cut thicker grass and weeds, so you’ll need to spend more time going over each area. (Or, simply replace the string with a stronger version.)


  • 2-in-1: Can be used as both an edger and a trimmer
  • Power Drive Transmission: Powerful cutting ability
  • Adjustable height and handle: Ideal comfort for user


  • Single line is flimsy: Struggles with thicker grass and weeds
BLACK+DECKER 20V MAX* String Trimmer / Edger, 12-Inch (LSTE523)
  • Converts from trimmer to wheeled edger; Line diameter 0.065 inch
  • Power drive transmission for increased torque
  • 2 speed control for more power or extended runtime. Maximum initial battery voltage (measured without a workload) is 20 volts. Nominal voltage is 18
  • Easy feed allows you to advance your line with the push of a button with no bumping required
  • Part of the 20 Volt MAX System; 1 system endless tasks. Power for your style

3. Greenworks 24V 12-Inch String Trimmer (Budget-Friendly Option)

Greenworks 24V 12' Cordless String Trimmer / Edger, 2.0Ah Battery and Charger Included

If you’re trying to stick to a budget but you’re still after a quality cordless trimmer, then this Greenworks 24V should definitely exceed your expectations.

The Greenworks string trimmer has a run time of around 30 minutes on full power, which should be more than sufficient if you’ve got an average-sized yard. Those with large yards may need to purchase an additional battery to be able to run the unit continuously without having to wait for it to charge.

The pivoting head of the trimmer is consistent and has quality trimming and edging capabilities to get the right finish to your lawn.

The trimmer also has an onboard battery life indicator. You’ll be made aware when the battery is starting to run low so you can recharge it or replace it with a fully-charged battery.

On the downside, the auto-feed on the Greenworks trimmer is not very consistent. It sometimes gets jammed and needs to be manually altered by the user, which can be confusing the first time you do it.


  • Telescopic shaft: Easy to extend to reach more difficult areas
  • Rotating head: Straight and consistent trimming each time
  • Onboard battery life indicator: Tells you when battery is running low so you can replace


  • Auto-feed feature is not consistent: Needs to be altered sometimes
Greenworks 24V 12" Cordless String Trimmer / Edger, 2.0Ah Battery and Charger Included
  • 24V STRING TRIMMER – Provides 20% more power and 35% more run-time to power through the toughest grass and weeds. Greenworks 24V battery powers 100+ indoor and outdoor products.Includes : (1) 24V 12" Cordless String Trimmer & Edger, (1) 24V 2.0 Ah Battery, (1) Battery Charger, (1) 0.065" Spool Assembly, (1) Owner's Manual.No load speed : 8000 / 9000 RPM. String trimmer operation temperature range : 6.8°F (-14°C) - 104°F (40°C)
  • 12” CUTTING PATH - .065” line, auto feed head for quick and easy line advancement
  • TRIMMER / EDGER (2-IN-1) – 90-degree rotating head with edging wheel. 3 position pivoting head for trimming at multiple angles, telescope shaft adjusts to user's height and posture
  • VARIABLE SPEED TRIGGER – Allows you to control cutting speed on the go, so you can easily maneuver around plants and shrubs
  • LIGHTWEIGHT / EASY TO USE – Ultra lightweight design, along with superior ergonomics allow for reduced user fatigue. Included 2.0Ah battery recharges in 60 minutes

4. Dewalt Flexvolt 60V MAX String Trimmer

DEWALT FLEXVOLT 60V MAX* String Trimmer, Brushless, Two Speed, 15-Inch, 3-Ah Battery (DCST970X1)

The Dewalt Flexvolt Trimmer is an ideal option if you’ve got tough undergrowth and stubborn weeds in your yard, thanks to the large 15-inch cutting swath that can be used as a trimmer and an edger to create clean-cut lines.

It comes with a high-efficiency motor with a variable speed trigger so you can choose to extend your run time while saving on power, or choose the most powerful option to trim more difficult areas.

The ergonomic design of the trimmer minimizes arm stress for the user and provides maximum control of the unit so you can get the job done accurately with no patchy areas.

One of the most disappointing parts about this Dewalt trimmer is the line feed; it’s inconsistent and gets tangled up sometimes.


  • Long-lasting battery: Can go longer between charging
  • Ergonomic design: Minimizes arm stress
  • Smooth and versatile operation: Variable speed triggers


  • The feed line is inconsistent: Gets jammed and has to be untangled sometimes
DEWALT FLEXVOLT 60V MAX* String Trimmer, Brushless, Two Speed, 15-Inch, 3-Ah Battery (DCST970X1)
  • Gear drive design of the edger/trimmer powers through tough overgrowth
  • High-efficiency brushless motor of the cordless grass trimmer maximizes run time and motor life
  • Lawn trimmer provides 15-inch cutting swath with 0.080-inch line (also accepts 0.095 inch)
  • Variable speed trigger with Hi/Lo speed control for added power or extended run time
  • Lightweight and ergonomic design maximizes control and minimizes stress on your arms

5. CRAFTSMAN V20 String Trimmer / Edger

CRAFTSMAN V20* String Trimmer / Edger (CMCST910M1)

The V20 trimmer by Craftsman is suitable for both tall and short users and can be adjusted to suit whatever height the user is to ensure maximum comfort.

It comes with high- and low-speed settings so you have more control of how much you’re cutting away, while also being able to save on battery to keep cutting for longer periods.

You’ll get great use out of the 13-inch cutting swath that cuts your lawn efficiently, so you can spend less time doing your lawn and more time enjoying it.

Unfortunately, the battery life on this Craftsman V20 trimmer/edger is pretty weak and doesn’t last a very long time, making it only practical for those with fairly small yards.


  • 2-speed settings: You can choose power or longer run time
  • 13-inch cutting swath: Cuts more in less time
  • Adjustable length: Good for short and tall people


  • The battery is weak: Does not last very long
CRAFTSMAN V20* String Trimmer / Edger (CMCST910M1)
  • 13inches Cutting swath with 0.080inches Line.Motor Type : Brushed, Number of Pieces : 6
  • Patented gear drive design that powers through overgrowth. Watt Hours - 80.0 Wh
  • Variable trigger with Hi/lo speed control for added power or extended runtime
  • High-efficiency Brushless motor maximizing run time and motor life
  • Lightweight and ergonomic design maximizes control and minimizes stress on your arm

Best cordless trimmers and weed eaters: buyer’s guide

Before buying a cordless trimmer and weed eater, there are a few things you should consider to know whether one would be suited to your needs.

My buyer’s guide below will give you the key factors you need to think about when buying and how each factor will impact how you use your new string trimmer.


The weight of the cordless trimmer will be one of the most important factors you need to consider when buying a new one.

You’ll be holding your cordless trimmer just above the ground with your arms and even though you may be able to carry a certain weight, you’ll need to be certain you can carry that weight for long periods (especially if you’ve got a large yard that needs trimming).

Cordless battery-powered trimmers and weed eaters are typically quite lightweight, but if you’re someone who doesn’t have much upper body strength, you’ll want to find a model that is lightweight enough for you to maneuver for the entire task.

Battery and power

Most cordless trimmers come with modern lithium-ion rechargeable batteries, as they’re lightweight and users won’t experience a drop-off in performance when the battery begins to run down during normal use.

A 20V battery is sufficient to do the average trimming job on a small- to medium-sized yard, or around 20 to 30 minutes of trimming on the highest setting.

If you’ve got a large yard or go long periods between trimming your grass, then you’ll need a more powerful battery to enable you to do most, if not all, of the job on one charge.

An 80V battery is recommended for people who have a fairly large yard as this should run for around 45 minutes at maximum power.

An additional battery is recommended for cordless trimmers, especially for people with large lawns and densely-planted landscapes.

You should keep both batteries fully charged before a large job so you can swap one out when it dies to finish the job.

Cutting swath

The cutting swath is the area a trimmer can cut at one time, so the larger the cutting swath, the quicker you’ll be able to cut your yard.

If you’ve got tight or intricate areas of grass in your garden, then you may want a trimmer with a smaller cutting swath.

If your yard has various shaped edges and corners, then I’d recommend getting a trimmer with adjustable cutting heads as you can change them out to tailor the cut to each area of your garden.

Line diameter

The line diameter measures the thickness of the trimmer line. If you’re just going to be trimming your lawn, then you’ll only need a size of around 0.065 inch to 0.085 inch.

If you’ve got long, thicker grass with tough weeds, then you’ll want to use something within the 0.085 inch to 0.110 inch range to make sure the job gets done properly.

Here’s a guide to the best weed eater string for your cordless trimmer and weed eater.

Frequently asked questions

What are the best cordless trimmers and weeds eaters?

The best cordless trimmers and weed eaters are: WORX 20V PowerShare 12″ Cordless String Trimmer & Edger, BLACK+DECKER 20V MAX String Trimmer, Greenworks 24V 12-Inch String Trimmer, Dewalt Flexvolt 60V MAX String Trimmer, and CRAFTSMAN V20 String Trimmer / Edger.

What can a cordless trimmer and weed eater be used for?

A cordless trimmer and weed eater can be used to cut grass, weeds, and any other plants on the ground. Some trimmers and weed eaters can be used to tidy up the edges or borders in your garden.

Are battery-powered weed eaters worth it?

Yes, battery-powered weed eats are worth it due to their portability, allowing users to reach more obscure and far away areas in their yard without having to use long extension cords to plug in their weed eater.

Those with smaller yards may make better use of a battery-powered weed eater as they don’t have much surface area to trim, whereas people with large yards may feel restricted by the battery life on a cordless weed eater and not be able to cut their entire yard in one go.

Which is best, a battery or a gas-powered weed eater?

Battery-powered weed eaters are definitely more preferred nowadays. Battery-powered weed eaters make far less noise than gas-powered weed eaters, so you won’t be such a nuisance to your neighbors when you decide to cut your lawn on a Sunday morning.

Battery-powered weed eaters don’t offer silent operation though, so you’ll still want to make sure you’re wearing some form of ear protection via headphones or earplugs to prevent any hearing damage.

Battery-powered weed eaters are also cheaper to run and better for the environment as they don’t release any emissions as gas ones do.

Electricity costs far less than oil and gas does, so the cost of running your weed eater will be far less—and that’s not including the inconvenience and travel costs to go fill up on gas to run your weed eater.

Gas-powered weed eaters are also a lot heavier than their battery-powered counterparts, making them more difficult to hold for long periods when you’re trimming your lawn.

How long does a battery last on a weed eater?

The battery life on a weed eater will depend on the voltage of the weed eater and also if you’re consistently running the power when trimming your lawn, or if you’re turning the system on and off repeatedly as you move around.

In general, the lower the voltage on a weed eater, the less run time you’ll have with it. Most 20V weed eaters will run for about 20 to 25 minutes, 40V weed eaters will run for 30 to 40 minutes, and 60V will run for around 40 to 50 minutes, depending on what level you’re using to cut the grass.

Using your weed eater on the highest level will drain the battery quickly, so if you’ve got some stubborn weeds and longer grass, then you’ll need to make sure the tool is fully charged before using it so you can turn it on to maximum power to do the job efficiently.

Many people will get an additional battery for their weed eater so they can change between them if one dies mid trimming. This way, you won’t have to wait around for a couple of hours for your only battery to recharge.

What should I look for when buying a cordless trimmer?

The main things to look for when buying a cordless trimmer are weight, voltage, and battery life.

If you’ve got a big yard, then you’ll want to make sure the cordless trimmer you’re buying is light enough to carry around comfortably for the duration of the job, otherwise you’ll find yourself getting fatigued, making it a chore that you dread doing.

You’ll also want to make sure the voltage is high enough to give you enough power to do a good job on your lawn.

If you’re someone who leaves a long period between trimming your grass and weeds, then you’ll want a powerful trimmer that’ll be able to cut everything efficiently without having to go over the same area numerous times.

Battery life is another key factor when buying a cordless trimmer. If you’ve got a small yard and you won’t need much time to trim all of it, then the battery life won’t be as important.

However, if you’ve got a huge lawn in your front or backyard, then you’ll want to get a trimmer with as high a battery life as possible. This will ensure you can get as much of your lawn trimmed as possible before the battery dies.

Can a trimmer cut longer grass?

Yes, a trimmer is ideal to cut longer grass whereas a lawnmower will struggle to cut longer grass. However, cutting long grass and doing a clean, even job may take longer with a trimmer. It takes more effort and the battery may not be able to last as long, especially if your yard is on the larger or unruly side.

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