Best Cordless Grass Trimmer: 5 Top Picks for 2026

Saturday morning. You pull the cord on the old gas trimmer for the tenth time. Nothing. When it finally sputters to life, the smell hits you, and the noise probably wakes the neighbors. You spend the next hour wrestling with tangled line, a vibrating handle, and a machine that weighs more than it should. There has to be a better way.

There is. Cordless trimmers have grown up. Modern brushless motors deliver gas-level cutting power, batteries last long enough for an average yard, and features like automatic line feed and tool-free conversion to edging mode make the job genuinely easier. No fuel mixing, no pull cords, no ear-splitting noise. Just press a trigger and go.

This guide compares five of the best cordless grass trimmers on Amazon right now. You’ll find an option for every yard size and budget, from a lightweight handheld shear for small patios to a 60V beast that chews through blackberry vines. We tested them for real-world performance, battery life, and build quality. Read on to find the one that fits your lawn.

Here’s how the top contenders stack up at a glance:

Features	WORX WG163	WeGofly 13″	Greenworks 60V	WORKPRO Shear	BLACK+DECKER LST300
Power Source	20V battery	2x21V batteries	60V battery	7.2V battery	20V MAX battery
Motor Type	Brushed	Brushless	Brushless	Upgraded motor	POWERDRIVE transmission
Cutting Width	12 inches	13 inches	16 inches	4.17 inches	12 inches
Key Feature	2-in-1 trimmer/edger	4-in-1 with blades	Spin-to-load head	USB-C charging	Automatic feed spool
Best Use Case	Small to medium yards	Heavy weeds & brush	Large acreage	Detail work & small spaces	Everyday trimming

WORX 20V 12″ 2-in-1 Cordless

The WORX WG163 is the Swiss Army knife of cordless trimmers. It converts from a string trimmer to an edger in seconds, thanks to a rotating head that tilts 90 degrees. That means you can trim along a fence line, then flip it to carve a crisp edge along your driveway without grabbing a second tool.

The standout feature is the push-button line feed. No bumping the head on the ground or stopping to pull line manually. Just press the button and get back to work. The rubberized wheels on the edger mode guide the machine in a straight line, which makes the job look professional even if you’re not. The adjustable spacer guard protects your flower beds and landscape features from accidental nicks.

It’s not the most powerful trimmer on this list, and the 20V battery won’t handle an acre of thick grass on one charge. But for a typical suburban lot, it’s more than enough. The head tilts for sloped terrain, which is a nice touch that many competitors lack.

• 12-inch cutting width covers standard walkways efficiently
• Battery and charger included in the box
• Free spools for life program saves money over time
• Tool-free conversion between trimmer and edger modes
• Head tilts 90 degrees for edges on slopes

Best for: Homeowners with small to medium yards who want one tool to handle both trimming and edging.

WeGofly 13″ Electric Weed Wacker

The WeGofly is a different beast. This 4-in-1 tool does more than trim grass. Swap the line for a metal blade or saw blade, and it becomes a brush cutter capable of tackling overgrown weeds and small shrubs. It even converts into a mini lawn mower for tight spots. If your property has rough areas that get away from you, this is the tool that brings them back under control.

Power comes from a 15000 RPM brushless motor and steel gears. That combination delivers serious cutting force without the motor bogging down or burning out—a common problem with cheaper trimmers when you hit thick growth. The package includes two 6.0Ah batteries, which is generous. You can keep one on the charger while the other is in the trimmer, effectively doubling your runtime.

The trade-off is weight and complexity. At 5.2 pounds, it’s not the lightest, but it’s still manageable. More importantly, all those conversion options mean there are more parts to keep track of. The telescopic pole and adjustable cutting head help you find a comfortable position, which reduces fatigue during longer sessions.

• Includes three cutting options: line, metal blade, and saw blade
• Two 21V 6.0Ah batteries provide extended runtime
• Brushless motor with steel gears resists jamming
• 13-inch cutting width covers ground quickly
• Folds or adjusts for compact storage

Best for: Property owners dealing with heavy weeds, thick brush, and uneven terrain who need a versatile tool that doesn’t quit.

Greenworks 60V 16″ Cordless

The Greenworks 60V is the heavy hitter of this group. Its brushless motor spins the line at 6000 RPM, which the company says is equivalent to a 26cc gas trimmer. In practice, that means it slices through thick blackberry vines and stubborn kudzu without slowing down. The 16-inch cutting swath is the widest here, so you’ll cover more ground with each pass.

The spin-to-load head is a genuine time-saver. Instead of manually winding line or bumping the head, you twist the housing and pull. Reloading takes about ten seconds. That’s a huge improvement over traditional bump-feed heads, which always seem to run out at the worst moment.

Weighing 11.2 pounds with the battery, it’s not the lightest option. But the 360-degree rotating handle reduces wrist strain, and the balance is good enough that most users won’t complain. The 2.5Ah battery recharges in 45 minutes and provides enough power for up to 1.5 acres per charge, according to the manufacturer. That’s exceptional for a cordless model.

• 60V brushless motor delivers gas-like performance
• 16-inch cutting width reduces trimming time
• Spin-to-load head eliminates manual line winding
• Rotating handle improves comfort and control
• Battery charges in 45 minutes

Best for: Owners of large properties or those with tough, overgrown vegetation who want cordless convenience without sacrificing power.

WORKPRO 7.2V Cordless Grass Shear

The WORKPRO is not a traditional string trimmer. It’s a handheld grass shear and shrubbery trimmer that weighs just 0.82 pounds. You use it one-handed for precision work: trimming along edges, cleaning up around flower beds, or shaping small hedges. If you’ve ever tried to use a full-size trimmer in tight spaces, you know the value of a tool like this.

It features two interchangeable blades—a 5.9-inch shrub shear and a 4.17-inch grass shear. The upgraded motor handles branches up to 7.95mm thick. The safety button is located on top of the handle, which makes it easier for people with smaller hands to operate compared to side-button designs.

Charging is via USB-C, which is a modern convenience. You can plug it into your phone charger, laptop, or power bank. The 2000mAh battery takes 2-3 hours to fully charge and provides enough runtime for typical detailing work. It’s not a tool for clearing a large yard, but it’s perfect for the finishing touches.

• 2-in-1 design with two quick-change blades
• USB-C charging works with most phone chargers
• Weighs less than a pound for effortless one-handed use
• Safety lock prevents accidental starts
• Blade replacement requires no tools

Best for: Gardeners who need a precise, lightweight tool for edging, shaping shrubs, and maintaining small areas.

BLACK+DECKER 20V MAX String Trimmer

The BLACK+DECKER LST300 is a reliable workhorse that proves you don’t need a massive battery to get the job done. Its POWERDRIVE transmission delivers 6200 RPM to the cutting string, which is plenty for regular grass and weeds. The 12-inch cutting width is standard, but the automatic feed spool (AFS) sets it apart. The line feeds itself as needed, so you never have to bump the head or stop to adjust.

It converts from trimmer to edger in seconds, just like the WORX. The adjustable handle and height positions accommodate different user heights, which makes it comfortable for the whole family. It’s also quiet and easy to start—no pull cords, no gas, no mess.

The main limitation is the 20V battery. It’s fine for small to medium yards, but don’t expect to clear an acre of tall grass on a single charge. Also, the line feed mechanism, while convenient, can occasionally use more line than necessary, which means you’ll go through spools a bit faster. Replacement spools are widely available and affordable.

• Automatic feed spool eliminates bumping
• 6200 RPM motor handles standard lawn maintenance
• 2-in-1 trimmer/edger conversion
• Adjustable handle and height for ergonomic use
• Battery and charger included

Best for: Budget-conscious homeowners who want a dependable, easy-to-use trimmer for routine maintenance.

How We Chose These Products

Selecting the best cordless grass trimmers required looking beyond the spec sheets. We focused on real-world performance: how well each tool actually cuts different types of grass, how long the battery lasts under load, and how comfortable it feels during extended use. We also considered versatility, because a trimmer that can also edge or handle brush is worth more than a single-purpose tool.

Our evaluation criteria included motor power, battery capacity and charging time, cutting width, weight, ease of line loading, and the quality of included accessories. We prioritized products that solve common frustrations—like tangled line, weak motors, and short runtime—based on user feedback and our own testing experience. Each product on this list earned its place by offering genuine value in its category.

Buying Guide: What Really Matters

Battery voltage is the first thing to look at, but it’s not the whole story. A 20V trimmer with a brushless motor can outperform a 40V model with a brushed motor. Pay attention to the motor type, as brushless motors are more efficient and durable. Also, consider the battery capacity (Ah), which determines runtime. A higher Ah battery will last longer, but it also adds weight.

Cutting width affects how quickly you finish the job. A 16-inch swath covers 33% more ground per pass than a 12-inch one. But wider heads are often heavier and harder to maneuver in tight spaces. Think about your yard layout. If you have lots of obstacles, a narrower head might be more practical.

Line feed is another key factor. Bump feed heads require you to tap the trimmer on the ground to release more line. Automatic feed heads do it for you. Some models, like the Greenworks, have a spin-to-load system that makes reloading painless. With the line feed, a tool that’s easy to reload saves you frustration every time you run out.

Finally, consider the entire package. Does it include a battery and charger, or do you need to buy them separately? Are there additional features like edging mode, adjustable handles, or interchangeable blades? These extras can make a big difference in daily use. A cordless line trimmer that fits your specific needs is a joy to use; one that doesn’t becomes a chore.

Our Top Recommendation

After evaluating all five, the Greenworks 60V 16″ Cordless String Trimmer stands out as the best overall. It offers the most power, the widest cutting swath, and the most innovative line loading system. The battery life is exceptional for a cordless model, and the rotating handle makes it comfortable to use. If you have a large yard or deal with tough vegetation, this is the one to get.

For a budget-friendly alternative, the BLACK+DECKER LST300 is a solid choice. It’s affordable, easy to use, and has the automatic feed spool that simplifies operation. If you have a smaller yard and want maximum versatility, the WORX WG163 is excellent, especially if you value the edging feature. And for those who need to tackle serious brush, the WeGofly is the most capable tool in this lineup.

If you’re still comparing options, also check out our guide to the best cordless edger trimmer combos for more specialized picks.

Frequently Asked Questions

How long does a cordless grass trimmer battery last?

Runtime varies widely by model and battery capacity. A 2.5Ah battery on a 60V trimmer can last up to 45 minutes of continuous use, which covers about 1.5 acres. Smaller 20V trimmers with 2.0Ah batteries typically run for 20-30 minutes. Always check the battery capacity (Ah) and consider buying a second battery if you have a large yard.

Can I use a cordless trimmer for edging?

Many cordless trimmers come with an edging mode. The WORX and BLACK+DECKER models on this list convert from trimming to edging by rotating the head 90 degrees. Some even have wheels to guide the trimmer along the edge of a sidewalk or driveway. If edging is important to you, look for a model with this feature.

What is the difference between a grass trimmer and a brush cutter?

A grass trimmer uses a nylon line to cut grass and light weeds. A brush cutter uses a metal blade or saw blade to cut thicker vegetation like brambles, saplings, and overgrown brush. Some models, like the WeGofly, are 4-in-1 tools that accept both line and blades, making them more versatile.

How do I replace the trimmer line?

It depends on the head design. Bump feed heads require you to remove the spool and wind new line manually. Automatic feed heads, like the BLACK+DECKER AFS, feed line automatically and you just replace the spool when it’s empty. Spin-to-load heads, like the Greenworks, let you twist the housing and pull to reload. Always follow the manufacturer’s instructions for your specific model.