A strong middle-ground for battery power. A 40-volt system typically offers ample runtime for most average-sized residential lawns. This makes a 40v lawn mower a fantastic choice if you’re tired of gas but worried a smaller battery won’t finish the job. You get serious cutting power without the fumes or the pull-cord hassle.
But is it the right fit for your yard? We tested a popular model to see how it handles real-world conditions. From battery life to how it deals with thick grass, here’s what you need to know before making the switch to cordless freedom.
Product Comparison Table: 9 Best 40v Lawn Mower
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Greenworks 40V 16″ Cordless Lawn Mower, Ultra-Light Push Mower…
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9.6 |
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Greenworks 40V 21″ Self-Propelled Cordless Lawn Mower – Brushless…
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9.4 |
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MZK 20V 13″ Electric Lawn Mower, Brushless Cordless Lawn…
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9.3 |
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EWORK 40V Electric Lawn Mower Cordless, 14″ Electric Push…
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9.1 |
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MZK 40V 16″ Electric Lawn Mower, 2-in-1 Brushless Cordless…
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8.9 |
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40V Cordless Lawn Mower, Electric Battery Powered 4.0Ah Walk…
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8.8 |
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WORX Nitro 16″ Cordless Lawn Mower, 2 in 1…
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8.6 |
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STEELITE 40V 17-inch Electric Lawn Mower and 12-Inch Cordless…
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8.5 |
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BILT HARD 40V 17″ Brushless Cordless Lawn Mower, 2-in-1…
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8.3 |
Read Review |
Quick Review For Top 9 40v Lawn Mower
Greenworks 40V 16" Cordless Lawn Mower, Ultra-Light Push Mower with 4.0Ah Battery & Charger(75+ Tool Compatibility, 45Min Runtime)
The Greenworks 40V 16″ Cordless Lawn Mower is designed to make lawn care simpler, quieter, and more economical. If you have a small to medium-sized yard up to about a half acre, this mower offers a compelling alternative to traditional gas-powered machines. It delivers gas-like performance without the fumes, noise, and ongoing maintenance that come with a gas engine.
One of the standout features is its runtime.
The included 4.0Ah battery provides up to 35 minutes of continuous mowing on a single charge, which is typically plenty for the target yard size. When the battery does run down, the fast charger gets you back to full power in about two hours. You’ll also appreciate the ultra-lightweight design, which is about 35% lighter than many comparable mowers. This, combined with the ergonomic handles and simple push-button start, makes pushing and maneuvering around your yard feel almost effortless.
It’s a great benefit for anyone who finds heavier mowers difficult to handle or store.
The mower includes a smart cut adjustment system for versatile lawn care. A single lever lets you choose from five different cutting heights, ranging from 1.25 inches to 3.375 inches, so you can easily adapt to different grass types or seasonal conditions.
Greenworks 40V 21" Self-Propelled Cordless Lawn Mower – Brushless Motor, 5.0Ah Battery & Charger(75+ Tool Compatible)
The Greenworks 40V 21″ Self-Propelled Cordless Lawn Mower is designed to give you a powerful, gas-like performance without the hassles of gas. It centers around a brushless motor that delivers serious torque for thick grass, but does it much quieter than traditional mowers—its about three times quieter, so you can mow without the loud roar. This motor also helps extend the tools overall lifespan and efficiency.
One of the biggest upgrades here is the self-propelled feature.
The rear-wheel drive provides excellent traction, and with variable speed control, you can easily match your walking pace. Whether your yard is flat or has a gentle slope, it handles the terrain effortlessly, reducing fatigue and making the whole job feel quicker. You simply guide it where you want it to go.
Versatility is a key strength. The 4-in-1 system lets you choose how to manage your clippings and debris.
You can mulch nutrients back into the soil, bag for a clean finish, use the side discharge, or engage the turbo function for picking up leaves. This adaptability means it’s usefull across different seasons, not just for regular grass cutting. Plus, the bright LED headlight is a practical touch for those times when you need to mow early or late, giving you more flexability to fit lawn care into your schedule.
The value extends beyond just the mower.
MZK 20V 13" Electric Lawn Mower, Brushless Cordless Lawn Mower with 4-Position Height Adjustment, Walk-Behind Push Mowers with 8 Gallon Grass Bag, 2 x 4.0Ah Batteries & Charger Included, LM13B8, Red
The MZK LM13B8 20V 13″ Cordless Lawn Mower is designed to make maintaining a neat lawn straightforward and less of a chore. Its core is a powerful brushless motor that works with the included pair of 4.0Ah batteries. This combination delivers reliable power for a clean cut and provides extended runtime, so you can often finish your whole yard on a single charge.
The brushless design also means the motor requires less maintenance and runs more efficiently over the long term compared to traditional models.
You’ll appreciate the 13-inch cutting width as it allows you to cover more area with each pass. This wider path, combined with the generous 8-gallon (30-liter) grass bag, means you spend less time going back and forth and make fewer stops to empty the catcher.
It’s a practical feature that helps you get the job done quicker, especially on smaller to medium-sized lawns where efficiency counts.
Getting the right look for your grass is simple with the four-position height adjustment. You can set the cutting height anywhere from 1.2 inches to 1.5 inches. This lets you adapt to different seasons or grass types, whether you want a shorter trim for a formal look or need to leave it a bit longer during a hot, dry spell.
EWORK 40V Electric Lawn Mower Cordless, 14" Electric Push Mower with 2×4.0Ah Batteries & Charger, 3800RPM Motor, 6-Height Adjustment, 21Lbs Lightweight Battery Powered Lawnmower for Garden, Small Yard
The EWORK 40V Electric Lawn Mower is designed to make maintaining a small to medium-sized yard a simpler, quieter task. It’s a cordless, battery-powered mower that aims to combine power with user-friendly features, all without the fuss of gas, oil, or a trailing power cord.
At its core is a 40V system powered by two included 20V 4.0Ah batteries.
This setup provides ample runtime for most small yards on a single charge, and the 3800RPM copper motor offers enough torque to handle thicker patches of grass without stalling. You get the cutting power you need but without the loud noise of a traditional gas mower, which is a considerate feature for you and your neighbors.
One of the key aspects of this mower is its lightweight build. At just 21 pounds, it’s significantly lighter than many gas or even some electric models.
This, combined with its 7-inch wheels, makes it easy to push and maneuver, especially around garden edges or tight corners. It’s a practical choice if you find heavier mowers physically demanding.
You have good control over your lawn’s apperance with the six-position height adjustment. A single lever lets you quickly switch cutting heights from about 0.86 inches to 2.44 inches.
MZK 40V 16" Electric Lawn Mower, 2-in-1 Brushless Cordless Lawn Mower, Walk-Behind Push Mowers with 5-Position Height Adjustment, 2 x 4.0Ah Batteries & Charger Included, LM16B011
The MZK 40V 16″ Electric Lawn Mower, model LM16B011, is designed to be a straightforward, cord-free solution for maintaining your lawn. It’s a 2-in-1 brushless cordless mower that gives you the flexibility to mulch clippings back into the turf or collect them in the included bag, all without the hassle of a cord or the fumes of gas.
At its core is a high-performance brushless motor.
This type of motor is known for its efficiency and durability, spinning at up to 3400 RPM for a clean cut. Because it has fewer moving parts that physically wear out, it’s built to maintain its strong cutting performance over many seasons, which is a significant advantage for long-term reliability.
Power comes from two included 40V 4.0Ah lithium batteries. This dual-battery system is key to its operation.
On a full charge, you can expect up to 45 minutes of runtime, which is well-suited for small to medium-sized lawns. If you need to stop, having a second battery means you can swap one to the charger and keep going, effectively reducing any waiting around. It’s good to note that actual runtime can vary depending on how thick your grass is and the terrain your mowing.
The mower has a 16-inch cutting path, which is a manageable width for navigating around yard obstacles.
40V Cordless Lawn Mower, Electric Battery Powered 4.0Ah Walk Behind Lawnmower, 17” Cutting Width, 6-Position Height Adjustment, Bagging & Mulching Model, for Garden/Patio/Yark
The GreenWorks 40V Cordless Lawn Mower is designed to make maintaining your yard a simpler, more efficient task. It’s a battery-powered walk-behind mower that eliminates the hassel of gas, cords, and complicated starts, giving you a clean, reliable cut for gardens, patios, and medium-sized lawns. This mower is built around a 17-inch cutting deck.
That width is a real sweet spot—it’s wide enough to cover ground quickly so you’re not out there all day, but it’s still nimble enough to maneuver around flower beds and patio furniture. The result is a uniform, carpet-like finish that makes your lawn look professionally tended. Powering this performance is a robust 1200W brushless motor and two included 20V 4.0Ah lithium-ion batteries.
Together, they deliver the equivalent of 40V of power, providing up to 40 minutes of consistent runtime on a single charge. That’s enough to efficiently tackle a lawn area of up to 10,000 square feet, so you can likely finish the job without worrying about the battery dying halfway through. You have full control over your lawn’s appearance with the six-position height adjustment lever.
WORX Nitro 16" Cordless Lawn Mower, 2 in 1 Electric Mower with with Brushless Motor, Lightweight Push Lawn Mower for 1/4 Acre, 2 Batteries & Charger Included, WG737
The WORX Nitro WG737 16″ Cordless Lawn Mower is designed for efficient, hassle-free lawn care for properties up to a quarter acre. It’s core innovation lies in its brushless motor 2.0, which provides a significant boost in power and runtime compared to older motor types, ensuring you can tackle your lawn with consistent performance and less frequent charging.
One of it’s standout features is the IntelliCut technology.
This system uses sensors to automatically adjust the mower’s cutting speed based on grass density. It increases power for thick patches and reduces it for thinner areas, which optimizes battery life and gives you a consistently clean cut without you having to adjust any settings. This smart operation is paired with a specialty mulch blade that finely chops grass clippings, whether you’re mulching or bagging.
The mower offers convenient 2-in-1 functionality.
You can attach the included 1.1-bushel bag to collect clippings for a tidy finish, or insert the mulch plug to let the fine clippings naturally decompose and nourish your lawn. Changing between these modes is straightforward. Adjusting the cut height is equally simple with the single-lever system, letting you quickly choose from six positions ranging from 1.5 to 3.5 inches.
This model is part of the WORX PowerShare ecosystem, a major advantage for those invested in cordless tools.
STEELITE 40V 17-inch Electric Lawn Mower and 12-Inch Cordless String Trimmer Combo with 2×4.0Ah Batteries and Dual Chargers
The STEELITE 40V 17-inch Electric Lawn Mower and 12-Inch Cordless String Trimmer Combo is designed to simplify your lawn care with a complete, battery-powered system. You get two core tools, two high-capacity 4.0Ah batteries, and dual chargers, so you can always have a battery ready to go. This setup means no more mixing gas, dealing with pull cords, or being tethered by a power cord.
It’s a straightforward solution for maintaining a well-kept yard.
At the heart of the 17-inch mower is a high-efficiency brushless motor that spins at 3400 RPM. This motor provides reliable cutting power and is built to last. Powered by both batteries together, it can deliver up to 30 minutes of runtime, though this depends on the thickness of your grass and the terrain. The mower offers two ways to handle clippings.
You can use the mulch plug to finely chop clippings and return nutrients to your lawn, or you can attach the 40L collection bag for a clean, tidy finish. Adjusting the cut is simple with the single-lever, six-position height adjustment, letting you quickly set the deck anywhere from just under an inch to nearly three inches.
We really appreciate the user-friendly design. Starting the mower is as easy as pushing a button—it’s instant.
BILT HARD 40V 17" Brushless Cordless Lawn Mower, 2-in-1 Electric Lawn Mower, Push Lawnmower with 6-Position Height Adjustment, 2 x 4.0Ah Batteries & Dual Charger Included
The BILT HARD 40V 17″ Brushless Cordless Lawn Mower is designed to simplify your lawn care routine. As a 2-in-1 electric lawn mower, it gives you the flexibility to either mulch grass clippings back into your lawn as natural fertilizer or collect them in the included 13-gallon rear bag for a clean finish.
This versatility means you can adapt to different lawn conditions and seasons without needing extra tools.
Power comes from two 20V 4.0Ah lithium-ion batteries, which are both included in the box along with a dual charger. This setup provides enough power for up to 30 minutes of runtime, making it well-suited for lawns up to about 1/8 of an acre.
The advanced brushless motor is a key feature here; it spins the blade faster for a clean cut through tough grass while also being more efficient. This efficiency extends the battery life per charge and increases the overall durability of the motor compared to traditional brushed types.
One of the standout aspects is how easy this mower is to use. It starts with a simple push-button—no cords to pull, no gas or oil to manage.
40v Lawn Mower Buying Guide
Choosing a 40V mower means evaluating battery life against your lawn’s square footage. It’s a powerful, cord-free middle ground between lighter 20V tools and heavy-duty gas mowers. This guide helps you pick the right model for a clean cut without the cord.
Battery Amp-Hour (Ah) Rating
Don’t just look at voltage. The battery’s Amp-hour (Ah) rating are crucial. Think of it as the fuel tank size. A 2.0Ah battery might struggle with a large lawn, leaving you halfway done. For most suburban yards, a 4.0Ah or 5.0Ah pack provides a better runtime. Consider if the brand offers compatible, higher-capacity batteries you can buy seperately for future flexibility.
Cutting Width & Deck Material
How wide a path do you want to mow? A wider deck, say 20 inches versus 17, means fewer passes and faster work. But it also means a slightly larger, heavier machine. For the deck itself, steel is durable but can rust; polymer is lighter and resists corrosion. Which is a bigger concern in your climate?
Grass Handling & Mulching
What happens to the clippings? A good mower handles tall, damp grass without constant clogging. Look for well-designed deck baffling. Many 40V mowers offer a 3-in-1 system: bag for a tidy look, side-discharge for long grass, and mulching to return nutrients to the soil. Effective mulching requires a sharp blade and a sealed deck to keep clippings circulating.
Adjustability & Storage
Can you easily change the cutting height? A single-lever adjustment for all wheels is a huge time-saver. Also, think about storage. Does it fold down compactly? How big is its footprint in your shed or garage? A cumbersome mower you have to wrestle in and out is a pain point you’ll feel every single time.
Frequently Asked Questions About 40v Lawn Mower
What does 40v mean for a lawn mower?
It refers to the battery’s voltage. A 40v battery powers the mower’s motor. It’s a common power level for cordless electric mowers. It offers a good balance of power and runtime for most lawns.
How long does the battery last on a single charge?
It depends on your grass and lawn size. Typically, a 40v battery runs for 45 to 60 minutes. That’s often enough for a quarter to a half acre lot. Having a spare battery can be a smart idea for bigger yards.
Is a 40v mower powerful enough for my lawn?
For most people, yes. A 40v mower handles thick grass and slight slopes well. It’s a strong choice for typical suburban lawns. If you have very hilly terrain or extremly thick grass, you might need more power.
What are the main benefits over a gas mower?
You get quiet operation, no fumes, and less maintenance. There’s no oil or gas to mess with. You just charge the battery and go. Starting is as simple as pushing a button.
How long does the battery take to charge?
Charging times vary, but it’s usually around 60 to 90 minutes for a full charge. Some fast chargers can do it quicker. Many people charge the battery overnight or between uses.
Can I use the battery with other tools?
Often, yes. Many brands have a “tool ecosystem.” This means the same 40v battery can work with their trimmers, blowers, and chainsaws. It’s a cost-effective way to build a full set of yard tools.
What kind of maintenance is required?
Very little. You should keep the mower deck clean and occasionally sharpen the blade. There’s no engine to service. Always store the battery in a cool, dry place for best life.
Are these mowers good for the environment?
They produce zero emissions while you use them. That’s better than a gas mower. The overall impact depends on how your local electricity is generated, but it’s generally a cleaner choice.
Last Thoughts Before You Buy
With strong runtime and ample power, a 40V mower is a solid step into capable cordless lawn care. It frees you from the hassle of gas and cords without sacrificing the performance you need for a typical yard. You get a tidy cut and more time to enjoy your weekend. Just be sure to check the battery and charger are included—sometimes thay’re sold seperately.
For many homeowners, this balance of convenience and capability hits the sweet spot. If your lawn is your biggest weekend chore, a reliable 40v lawn mower can make it feel much simpler. You’ll appreciate the quiet operation and easy storage. It’s a practical choice that gets the job done well.