40V Cordless Lawn Mower
Greenworks 24V 13″ Brushless
If you’re tired of wrestling with gas fumes, tangled cords, or the constant maintenance that comes with traditional lawn mowers, you’re not alone. More homeowners are making the switch to cordless electric mowers—and for good reason. They’re quieter, cleaner, and surprisingly powerful. But with so many options on the market, choosing the right one can feel overwhelming. That’s where this head-to-head comparison comes in.
We’re putting two popular cordless models under the microscope: the 40V Cordless Lawn Mower, a versatile tool designed to work with your existing Dewalt 20V MAX batteries, and the Greenworks 24V 13″ Brushless, a self-contained system that includes battery and charger right out of the box. Whether you’re maintaining a small suburban yard or tackling a medium-sized lawn, understanding the strengths and limitations of each model will help you make a confident, informed decision. In this guide, you’ll learn about performance, runtime, ease of use, storage, and value—so you can pick the mower that fits your lifestyle, not the other way around.
In-Depth Look: 40V Cordless Lawn Mower
The 40V Cordless Lawn Mower is a smart choice for DIYers and homeowners who already own Dewalt 20V MAX tools. Instead of buying a whole new battery ecosystem, this mower lets you double up on your existing batteries—literally. By inserting two 20V Dewalt MAX batteries, you get a combined 40V of power, which translates into strong, consistent performance that rivals gas mowers without the noise or emissions.
One of its standout features is the 14-inch cutting deck, which is wider than the typical 13-inch models. That extra inch might not sound like much, but over the course of mowing a 0.25-acre lawn, it can save you several passes—and several minutes. The single-lever height adjustment offers six settings from just under an inch up to three inches, giving you fine-tuned control over your grass length. Whether you’re maintaining a manicured lawn or tackling overgrown spring growth, this flexibility is a real advantage.
Under the hood, the upgraded copper motor and manganese steel blade deliver clean, precise cuts even in dense or wet grass. And because it’s electric, it runs quietly—perfect for early morning mowing without waking the neighbors. At just 22 pounds, it’s lightweight enough for seniors or anyone who prefers not to wrestle with heavy equipment. The 35-liter grass bag means fewer trips to empty it, and the foldable handle makes storage a breeze in tight garages or sheds.
However, there are a couple of caveats. First, the battery compartment is tight—only two 4.0Ah batteries will fit comfortably. If you’re using higher-capacity Dewalt batteries (like 5.0Ah or 6.0Ah), you may run into fit issues. Second, this is sold as a bare tool—no batteries, no charger. If you don’t already own compatible Dewalt batteries, you’ll need to factor that into your total cost.
Customer feedback highlights its value for money and compatibility with existing tool lines. One user noted, “I already had two Dewalt batteries from my drill and saw, so this mower was basically free. It cuts better than my old gas mower and starts with the push of a button.” Another mentioned, “Lightweight and quiet—my dog doesn’t even bark when I mow anymore!” A third reviewer appreciated the storage design: “Folds flat in seconds. Fits behind my garage door without taking up shelf space.”
This mower is best suited for small to medium yards (up to 0.3 acres) and users who want to maximize their existing Dewalt investment. If you’re already in the Dewalt ecosystem, this is a no-brainer upgrade.
In-Depth Look: Greenworks 24V 13″ Brushless
The Greenworks 24V 13″ Brushless takes a different approach: everything you need comes in one box. Included are the mower, a 4.0Ah lithium-ion battery, charger, grass bag, and operator’s manual. This all-in-one package makes it ideal for first-time cordless buyers or those who want a hassle-free setup without compatibility concerns.
Powered by a brushless motor, this mower is more efficient and durable than brushed alternatives. Brushless motors generate less heat, last longer, and deliver consistent power throughout the charge cycle. With up to 30 minutes of runtime, it’s perfect for small yards or quick touch-ups. While that may not sound like a lot, most suburban lawns under 0.2 acres can be mowed in under 25 minutes—especially with a 13-inch deck that’s easy to maneuver around flower beds, trees, and fences.
The single-lever height adjustment offers five cutting positions, though the exact range isn’t specified. The 2-in-1 design supports both mulching and bagging, giving you flexibility depending on the season. After a rainy week, you might prefer bagging clippings; in dry summer months, mulching returns nutrients to the soil. Maintenance is virtually nonexistent—no oil changes, no spark plugs, no fuel stabilizers. Just charge, mow, and store.
Weighing in at a lightweight design (Greenworks doesn’t publish an exact number, but user reports suggest it’s comparable to the 40V model), it’s easy to push and control. The push-button start eliminates pull cords, and the quiet operation makes it neighborhood-friendly. Plus, Greenworks backs it with a generous 3-year warranty on both the tool and battery—something the 40V model doesn’t offer.
Customers praise its simplicity and reliability. “I charged it overnight and mowed my entire front and back yard in 20 minutes,” said one reviewer. “No fumes, no noise, no mess.” Another added, “My kids can even help now—it’s that easy to use.” A third highlighted the warranty: “Three years of coverage gives me peace of mind. I’ve had cheaper mowers break after one season.”
This mower shines for small yards, renters, or anyone prioritizing convenience and low maintenance. If you don’t own compatible batteries and want a complete, ready-to-go solution, the Greenworks is hard to beat.
Head-to-Head Comparison
Power and Performance
The 40V Cordless Lawn Mower holds a clear edge in raw power thanks to its 40V output. While the Greenworks uses a modern brushless motor, 24V simply can’t match the torque and cutting force of a 40V system—especially in thick or tall grass. That said, for most small lawns, the Greenworks delivers more than enough power. The difference matters most if you have uneven terrain or frequently let your grass grow long between cuts.
Runtime and Battery Flexibility
Here’s where things get interesting. The Greenworks includes a 4.0Ah battery with up to 30 minutes of runtime—but that’s fixed. The 40V model’s runtime depends entirely on which Dewalt batteries you use. Two 4.0Ah batteries might give you 25–30 minutes, but upgrade to 5.0Ah or 6.0Ah packs, and you could double that. Plus, if you already own Dewalt tools, you can rotate batteries between devices. The Greenworks locks you into its proprietary system.
Cutting Width and Efficiency
The 14-inch deck on the 40V model covers more ground per pass, reducing mowing time by about 10–15% compared to the 13-inch Greenworks. For larger yards, that adds up. But for tight spaces or intricate landscaping, the slightly narrower Greenworks may be easier to navigate.
Ease of Use and Storage
Both mowers are lightweight and fold for compact storage. The 40V model has a slight advantage with its larger grass bag (35L vs. unspecified on Greenworks), meaning fewer interruptions. However, the Greenworks wins on out-of-box usability—no battery hunting required.
Value and Long-Term Cost
If you already own Dewalt 20V batteries, the 40V mower is an incredible value. If not, you’re looking at $100–$150 just for two batteries and a charger—on top of the mower’s price. The Greenworks includes everything, making it a better deal for new users. Don’t forget the 3-year warranty, which adds long-term peace of mind.
Frequently Asked Questions
Q: Can I use higher-capacity Dewalt batteries with the 40V Cordless Lawn Mower?
A: The battery compartment is designed for two 4.0Ah Dewalt 20V MAX batteries. Higher-capacity models (5.0Ah or 6.0Ah) may not fit due to size constraints. Always check dimensions before purchasing. Check compatibility on Amazon.
Q: Does the Greenworks 24V 13″ Brushless come with a charger?
A: Yes! The kit includes a 24V 4.0Ah battery, charger, grass bag, and manual—everything you need to start mowing right away. See full package details here.
Q: Which mower is better for a 0.25-acre yard?
A: Both can handle it, but the 40V Cordless Lawn Mower’s wider deck and higher voltage make it faster and more efficient. For smaller or irregularly shaped yards, the Greenworks offers easier maneuverability.
Q: Are these mowers suitable for seniors or people with limited strength?
A: Absolutely. Both weigh around 22 pounds and feature lightweight designs. The Greenworks has a push-button start, which is easier than pull cords. For more tips, see our guide on the best hand lawn mowers for lightweight options.
Q: Can I mulch with both mowers?
A: The Greenworks supports mulching and bagging. The 40V model focuses on bagging, though some users report success with side discharge. For mulching enthusiasts, check out our leaf vacuum vs. mulching mower comparison.
Q: How do I maintain these cordless mowers?
A: Minimal maintenance is needed—clean the deck after use, sharpen blades annually, and store batteries properly. Avoid overcharging. For seasonal care, read our guide on how to prevent lawn thatch, which affects mowing efficiency.
Q: Is a brushless motor worth the extra cost?
A: Yes, especially for frequent use. Brushless motors are more efficient, run cooler, and last longer. The Greenworks includes one standard, while the 40V model uses a traditional copper motor—still reliable, but less efficient over time.
Final Verdict: Which One Should You Choose?
Choosing between these two cordless mowers ultimately comes down to your existing tool ecosystem and yard needs. If you’re already invested in Dewalt 20V MAX tools, the 40V Cordless Lawn Mower is a powerhouse upgrade that saves money and delivers gas-like performance. Its wider cut, larger grass bag, and compatibility with high-capacity batteries make it ideal for medium yards and power users.
On the other hand, if you’re new to cordless mowing or prefer a complete, worry-free package, the Greenworks 24V 13″ Brushless is the clear winner. With included battery, brushless efficiency, 3-year warranty, and simple operation, it’s perfect for small yards, first-time buyers, or anyone who values convenience.
Both mowers represent excellent steps toward a cleaner, quieter lawn care routine. Whichever you choose, you’ll enjoy instant starts, zero emissions, and the freedom of cordless operation.
