40V Cordless Lawn Mower
Greenworks 48V 17″ Brushless
If you’re tired of tangled cords, smelly gas fumes, or the constant maintenance that comes with traditional lawn mowers, you’re not alone. More homeowners are switching to cordless electric mowers for their quiet operation, eco-friendliness, and ease of use. But with so many options on the market, choosing the right one can feel overwhelming. That’s why we’re comparing two popular models: the 40V Cordless Lawn Mower (compatible with DeWalt 20V MAX batteries) and the Greenworks 48V 17″ Brushless—two powerful, battery-powered mowers designed for small to medium-sized lawns.
This head-to-head comparison will help you decide which mower fits your yard, your budget, and your lifestyle. We’ll break down everything from cutting performance and battery life to storage convenience and long-term value. Whether you’re upgrading from a gas mower or switching from a corded model, this guide will give you the honest, detailed insights you need to make the best choice. And if you’re curious about other lawn care tools, check out our guide on the best hand reel push lawn mowers for a quieter, manual alternative.
In-Depth Look: 40V Cordless Lawn Mower
The 40V Cordless Lawn Mower is a compact, lightweight mower designed for homeowners who already own DeWalt 20V MAX batteries. It’s not sold as a complete kit—so you’ll need to supply your own power source—but that’s also its biggest advantage if you’re already invested in the DeWalt ecosystem. This mower runs on two 20V batteries (max 4.0Ah each), combining to deliver 40 volts of gas-like cutting power without the noise or emissions.
One standout feature is its 14-inch steel blade, which is wider than many competitors’ 13-inch models. That extra inch might not sound like much, but it means fewer passes over your lawn, saving time and effort. The single-lever height adjustment offers six settings from 0.98″ to 3″, giving you precise control over grass length—perfect for seasonal changes or different turf types. Whether you’re mowing Bermuda grass in summer or fescue in spring, you can tailor the cut to your lawn’s needs.
Under the hood, an upgraded copper motor delivers high torque for clean cuts, even in thicker grass. The manganese steel blade stays sharp longer and resists wear, reducing the need for frequent replacements. And at just 22 pounds, this mower is incredibly easy to maneuver around flower beds, trees, and tight corners. The 35L (9.25-gallon) grass bag minimizes stops to empty, and the foldable handle makes storage a breeze—ideal for small garages or sheds.
Safety is also a priority. A double safety switch prevents accidental starts, which is especially helpful if you have kids or pets. Assembly is tool-free and takes just minutes, so you can go from box to mowing in no time. However, keep in mind that this is a bare tool—no batteries or charger included. If you don’t already own compatible DeWalt packs, you’ll need to purchase them separately, which can add $100–$150 to your total cost.
Pros:
– Lightweight and easy to push (22 lbs)
– Compatible with popular DeWalt 20V MAX batteries
– Quiet operation—great for early mornings
– 14″ cutting width saves time
– Foldable for compact storage
Cons:
– Batteries and charger not included
– Limited to bagging (no mulching option)
– Only fits smaller battery capacities (max 4.0Ah)
Best for: Homeowners with small to medium yards (up to ¼ acre) who already use DeWalt tools and want a lightweight, no-fuss mower. It’s also ideal for seniors or anyone who values ease of use and quiet performance.
In-Depth Look: Greenworks 48V 17″ Brushless
The Greenworks 48V 17″ Brushless is a step up in both power and features. It runs on dual 24V lithium-ion batteries (included), combining for 48 volts of smooth, consistent performance. The brushless motor is not only more efficient but also quieter and longer-lasting than brushed motors, making it a smart long-term investment.
With a 17-inch steel deck, this mower covers more ground per pass—ideal for slightly larger yards (up to ⅓ acre). The wider cut means fewer laps around the lawn, and the 2-in-1 system lets you switch between rear bagging and mulching with ease. Mulching finely chops clippings and returns nutrients to the soil, reducing the need for fertilizer—a win for both your wallet and your lawn’s health.
Convenience is built into every detail. The included 65W Type-C dual-port charger can power both batteries simultaneously, and the 3-foot cables make it easy to plug in anywhere. Charging time is impressively fast, especially compared to older chargers. Plus, the upright storage design lets you store the mower vertically, taking up minimal floor space—perfect if you’re tight on garage room.
Greenworks backs this mower with a solid 3-year limited warranty on both the tool and batteries, which speaks volumes about their confidence in its durability. And if you’re building a cordless outdoor toolkit, you’ll love that these 24V batteries work with over 200 Greenworks tools, from trimmers to chainsaws. It’s a scalable system that grows with your needs.
Pros:
– Includes batteries and fast charger
– 17″ cutting width for faster mowing
– Brushless motor = quieter, more efficient, longer life
– Mulch and bag options
– Upright storage saves space
– 3-year warranty
Cons:
– Heavier than the 40V model (~30 lbs estimated)
– Slightly higher upfront cost
– Not compatible with other major brands’ batteries
Best for: Homeowners with medium-sized lawns who want a complete, ready-to-use mower with mulching capability and long-term reliability. It’s also great for those starting a Greenworks cordless tool collection.
Head-to-Head Comparison
Performance & Power
The Greenworks 48V 17″ Brushless holds a clear edge in raw power and cutting capacity. Its 48V system and brushless motor deliver smoother, more consistent performance, especially in dense or overgrown grass. The 40V Cordless Lawn Mower is no slouch—it handles typical suburban lawns with ease—but it’s better suited for lighter-duty tasks. If your yard has thick grass or you mow less frequently, the Greenworks will handle it better.
Battery & Charging
This is where the Greenworks shines. It comes with two 4.0Ah batteries and a fast 65W Type-C charger, so you can start mowing right out of the box. The 40V model requires you to own (or buy) two DeWalt 20V MAX batteries and a compatible charger. While DeWalt batteries are widely available and durable, the added cost and hassle may be a dealbreaker for some. For convenience and value, Greenworks wins here.
Cutting Width & Efficiency
The Greenworks’ 17-inch deck covers 3 inches more per pass than the 40V’s 14-inch blade. On a 5,000 sq ft lawn, that could mean 10–15 minutes saved per mow. Over a season, that adds up. If you value efficiency, especially on slightly larger lots, the Greenworks is the better choice.
Features & Versatility
The Greenworks offers mulching, which the 40V model lacks. Mulching returns nutrients to the soil and reduces cleanup time—something eco-conscious homeowners will appreciate. Both have grass bags, but only the Greenworks gives you that dual option. The 40V model does have a slight edge in weight (22 lbs vs. ~30 lbs), making it easier to push over hills or uneven terrain.
Storage & Design
Both mowers are designed for compact storage, but in different ways. The 40V model folds flat, while the Greenworks stands upright. Depending on your space, one may work better than the other. If you have low ceiling clearance, the foldable design might be preferable. For narrow wall spaces, upright storage could be ideal.
Warranty & Long-Term Value
Greenworks offers a 3-year warranty, while the 40V model’s warranty isn’t clearly stated. That lack of transparency is a red flag for long-term buyers. Additionally, Greenworks’ ecosystem compatibility adds future value—your batteries can power trimmers, blowers, and more. The 40V model is limited to DeWalt’s 20V line, which is robust but doesn’t include as many lawn-specific tools.
Frequently Asked Questions
Q: Can I use higher-capacity DeWalt batteries with the 40V Cordless Lawn Mower?
A: No—the battery compartment only fits up to 4.0Ah batteries. Using larger packs (like 5.0Ah or 6.0Ah) may not fit or could damage the mower. Stick to 4.0Ah or smaller for safe operation.
Q: Does the Greenworks 48V 17″ Brushless work on hills?
A: Yes, but its heavier weight (~30 lbs) may make it harder to push on steep slopes compared to the lighter 40V model. For hilly yards, consider a self-propelled mower or check out our guide on the best riding lawn mowers for steep hills.
Q: Is mulching really worth it?
A: Absolutely—if you mow regularly. Mulching returns nutrients to the soil, reduces bagging time, and keeps your lawn healthier. Learn more about the benefits in our article: Leaf Vacuum vs Mulching Mower.
Q: Can I use the Greenworks batteries with other tools?
A: Yes! The 24V batteries work with over 200 Greenworks tools, including trimmers, blowers, and chainsaws. It’s a great way to build a unified cordless system.
Q: Which mower is better for a ¼-acre yard?
A: Both are suitable, but the Greenworks 48V 17″ Brushless offers more power, faster mowing, and mulching—making it the better all-around choice for that size lot.
Q: Do I need to dethatch before using either mower?
A: Not necessarily, but dethatching improves mowing efficiency and lawn health. If your lawn feels spongy or has thick thatch, consider dethatching first. See our guide: How to Dethatch Lawn with Mower Attachment.
Final Verdict: Which One Should You Choose?
If you’re already deep in the DeWalt tool ecosystem and want a lightweight, no-frills mower for a small yard, the 40V Cordless Lawn Mower is a solid pick—just remember to budget for batteries and a charger. It’s quiet, easy to store, and gets the job done.
But for most homeowners, the Greenworks 48V 17″ Brushless is the better investment. It comes ready to use, offers more cutting power, includes mulching, and is backed by a strong warranty. The upright storage and fast charging add everyday convenience, and the expandable battery system makes it a smart long-term choice.
Ultimately, if you value completeness, performance, and future-proofing your yard tools, go with the Greenworks. If you’re on a tight budget and already own DeWalt batteries, the 40V model is a capable alternative.
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