LawnMaster MX 24V 37cm Cordless Lawnmower with 2x 4.0Ah Batteries Review: Our Definitive Field Test and Verdict

For years, my weekend ritual involved a familiar, frustrating dance. It was the dance of the corded lawnmower—a constant battle of untangling, flicking the cable out of the way, and the low-grade, persistent anxiety of accidentally running over the very wire that powered the machine. Every turn was a strategic calculation. Mowing around the garden shed felt like a logic puzzle. I’d finish the lawn not with a sense of satisfaction, but with a sigh of relief that I’d survived another mow without tripping or causing a power outage. This experience is far from unique; it’s the shared story of countless homeowners tethered to an outlet, yearning for the freedom to simply walk and mow. The move to cordless isn’t just a luxury; it’s a fundamental upgrade to the entire experience of caring for your lawn, transforming a chore into something genuinely enjoyable.

What to Consider Before Buying a Cordless Rotary Mower

A cordless rotary mower is more than just an item; it’s a key solution for reclaiming your time and sanity during garden maintenance. It solves the core problems of mobility, safety, and convenience that plague corded models, and sidesteps the noise, fumes, and maintenance headaches of petrol alternatives. The main benefits are unparalleled freedom of movement, significantly quieter operation, and push-button simplicity. You can tackle any corner of your garden without worrying about extension lead length or finding a nearby power source, making the entire process faster and less stressful.

The ideal customer for this type of product is someone with a small to medium-sized lawn, typically up to 300-400 square metres, who values convenience and ease of use above all else. It’s perfect for homeowners who are tired of the corded dance or find petrol mowers too heavy, loud, and complex to maintain. However, it might not be suitable for those with exceptionally large gardens (think half an acre or more) or properties with very dense, tough, or consistently overgrown grass. In those scenarios, the raw, sustained power of a petrol mower, like some of the alternatives we discuss later, might be a more practical, albeit less convenient, choice.

Before investing, consider these crucial points in detail:

• Dimensions & Space: The cutting width (deck size) is paramount. A wider deck, like 46cm, covers more ground per pass but is less nimble. A narrower deck, like the 37cm on the LawnMaster, is perfect for navigating flowerbeds, paths, and tighter spaces. Also, consider storage. Look for models with folding handles and a compact design, as garage or shed space is often at a premium.
• Capacity/Performance: This is all about the battery. Look at the voltage (V) and amp-hours (Ah). Higher numbers generally mean more power and longer runtime. A dual-battery system, as offered by the LawnMaster MX 24V 37cm Cordless Lawnmower with 2x 4.0Ah Batteries, is a game-changer, allowing you to charge one while using the other for near-continuous operation. Also, check the grass box capacity; a larger box means fewer trips to the compost bin.
• Materials & Durability: Mower decks are typically made of polypropylene (a durable plastic) or metal (steel/aluminium). Polypropylene decks, like this LawnMaster’s, are lighter, rust-proof, and less prone to dents, making them easier to handle. Metal decks are heavier and can offer more rigidity but require care to prevent rust. The blade material is also critical; look for high-grade carbon steel for a sharp, lasting edge.
• Ease of Use & Maintenance: Simplicity is the hallmark of a good cordless mower. Look for features like a single-lever height adjustment, which allows you to change the cutting height of all four wheels simultaneously. An ergonomic, adjustable handle and a central carry handle are also huge pluses. Long-term care is minimal compared to petrol mowers—just keep the underside clean, the blade sharp, and the batteries charged.

Making the right choice transforms lawn care from a dreaded task into a satisfying part of your home’s upkeep.

While the LawnMaster MX 24V 37cm Cordless Lawnmower with 2x 4.0Ah Batteries is an excellent choice, it’s always wise to see how it stacks up against the competition. For a broader look at all the top models, we highly recommend checking out our complete, in-depth guide:

Unboxing and First Impressions: A Promising Start

Upon opening the box, the vibrant orange and black colour scheme of the LawnMaster MX 24V 37cm Cordless Lawnmower with 2x 4.0Ah Batteries immediately stands out. It looks modern and purposeful. Assembly was, for the most part, intuitive. The main components—the mower deck, handles, and grass box—fit together logically. However, we have to agree with some user feedback regarding the instruction manual. As one user noted, “The images showing where screws and other fittings go together are just TOO SMALL to read.” While we managed without major issue, clearer, larger diagrams would be a welcome improvement for those less mechanically inclined.

Despite this minor hiccup, the build quality felt reassuringly solid once assembled. The polypropylene deck is robust yet lightweight, and the handles lock into place with a satisfying click. The two 4.0Ah batteries and the fast charger feel substantial and well-made. Our initial impression was of a thoughtfully designed machine that balances durability with user-friendly weight. It feels like a significant step up from flimsy, budget mowers, giving us confidence before we even powered it on. You can see the full kit and specifications to get a better sense of its quality construction.

A Deep Dive into Performance: Putting the LawnMaster to the Test

A mower’s true worth is proven on the turf. We put the LawnMaster MX 24V 37cm Cordless Lawnmower with 2x 4.0Ah Batteries through its paces on a typical British lawn with varied conditions—some lush patches, some thinner areas, and a few gentle slopes. We tested its battery endurance, cutting quality, ergonomics, and overall user experience to deliver this comprehensive analysis.

Unleashing Cordless Power: The MX 24V Dual Battery System

The heart of this mower is its power source, and LawnMaster has nailed the execution here. The package includes two powerful MX 24V 4.0Ah lithium-ion batteries and a one-hour fast charger. This isn’t just a convenience; it’s a core feature that fundamentally changes the cordless experience. The ability to have one battery on charge while the other is in use effectively eliminates runtime anxiety for most users. In our testing, a single fully charged battery was more than sufficient to mow a lawn of approximately 250 square metres with power to spare. This aligns perfectly with one user’s experience, who stated, “one battery cut our 100ft x 35ft lawn,” which is over 320 square metres. This is impressive and demonstrates the mower’s efficiency.

A key technology at play is the iPOWER intelligent battery management system. This system automatically adjusts the motor’s power output based on the grass conditions. When we moved from a thin patch of grass to a thicker, lusher area, we could hear the motor subtly ramp up its speed to maintain blade momentum, then power down again on easier terrain. This intelligent conservation is crucial for maximising the runtime of each battery. For those moments when you hit a particularly stubborn patch, there’s also a manual power boost button, giving you full control. We found this especially useful for the first cut of the season. It’s a feature that really sets it apart, and you can explore its advanced power features further online. It’s important to set realistic expectations, however. One user reported running through both batteries without finishing their lawn. This suggests that for exceptionally large or severely overgrown lawns, the 24V system may reach its limit, and continuous stops to recharge could become impractical. But for the small-to-medium lawns it’s designed for, the dual-battery setup is a masterstroke.

Cutting Performance and That Coveted Striped Finish

Power is meaningless without a quality cut, and the LawnMaster MX 24V 37cm Cordless Lawnmower with 2x 4.0Ah Batteries delivers beautifully. The 37cm cutting width is a sweet spot—wide enough to cover ground efficiently but narrow enough to be nimble around garden furniture and curved borders. The carbon steel blade arrived sharp and ready to go, providing a clean, crisp cut that sliced through grass blades rather than tearing them. This is vital for lawn health, preventing bruised, brown tips.

The single-lever height adjustment is a dream to use, offering six distinct cutting positions from a very low 22mm up to a generous 72mm. This range is fantastic, allowing you to give the lawn a close trim in summer or leave it longer during early spring and autumn. We tested several heights, and the mechanism was smooth and secure every time. But the star of the show for many will be the integrated rear roller. While some users express scepticism about rollers on lightweight rotary mowers, we were pleasantly surprised. As one owner confirmed, it “made not a bad job for the first real cut of the season!” We found that on a moderately lush lawn, the roller effectively presses the grass down after cutting, creating those classic, professional-looking stripes that elevate the appearance of any garden. It may not produce the bowling-green precision of a heavy cylinder mower, but it absolutely delivers a noticeable and satisfying striped finish.

Ergonomics and User-Friendly Design

This is where the transition from a heavy petrol or awkward corded mower feels most profound. At just 13.38 kilograms, the LawnMaster MX 24V 37cm Cordless Lawnmower with 2x 4.0Ah Batteries is incredibly lightweight. Pushing it across the lawn requires minimal effort, and manoeuvring it in tight 180-degree turns at the end of a pass is effortless. This ease of use reduces physical strain and makes the task of mowing significantly quicker and less fatiguing. The central carry handle is perfectly balanced, making it easy to lift the mower up a few steps into the shed or over a garden path.

Storage is another area where LawnMaster has clearly listened to its customers. The handles feature quick-release clips that allow them to be folded down in seconds, creating a much smaller footprint. The 40L Redi-bag is a clever collapsible fabric design, which, once empty, can be folded and stored neatly on top of the mower deck. This is a huge advantage for anyone with limited storage space. We did note one user’s comment that “the handlebar is 10 cm longer than the corded one I previously had.” We see this as a double-edged sword: the longer handle provides better leverage and a more comfortable posture for taller users during mowing, but it does slightly increase the overall length for storage. For us, the comfort during use outweighed the marginal increase in stored size, making the ergonomic design a major win. The convenience on offer makes it an attractive option, and you can often check the latest price and availability for this user-friendly model.

What Other Users Are Saying

Across the board, the sentiment from other owners is overwhelmingly positive, with many echoing our own findings. The most frequently praised feature is, unsurprisingly, the cordless freedom. One user, a long-time owner of a corded mower, called the switch a “total convenience gamechanger,” which perfectly encapsulates the primary benefit of this machine. Many, like us, found the build quality to be “superb” and the cutting performance clean and efficient.

The dual-battery system receives consistent accolades. One happy customer noted, “We liked everything about this mower, batteries excellent,” highlighting the effectiveness of the power solution for their sizable lawn. Of course, no product is perfect, and the feedback provides a balanced view. The primary criticisms we found were the aforementioned small diagrams in the assembly manual and the battery’s limitations when faced with exceptionally demanding conditions. As one user pointed out, the battery “can run low on thicker grass,” a fair observation for any cordless model in this class. It’s also important to be vigilant upon delivery; one unfortunate buyer received a used, grass-covered unit, which is likely a seller or logistics issue rather than a product fault, but serves as a reminder to inspect your purchase upon arrival.

How Does the LawnMaster Compare to the Alternatives?

The LawnMaster MX 24V 37cm Cordless Lawnmower with 2x 4.0Ah Batteries occupies a very competitive space. To understand its value, it’s helpful to see how it stacks up against other popular options with different power sources and features.

1. Greenworks 48V Self Propelled Cordless Lawnmower

The Greenworks 48V model represents a significant step up in both power and features. Its key advantages are the self-propelled drive, which takes the effort out of pushing, and a much wider 46cm cutting deck. This makes it a superior choice for those with larger lawns (up to 460m²) or gardens with slopes, where the self-propelled function would be a massive benefit. However, these features come at a cost—it is heavier, less manoeuvrable in tight spaces, and typically more expensive. Someone should choose the Greenworks over the LawnMaster if their primary needs are covering a large area quickly and reducing physical exertion.

2. Hyundai 139cc Electric-Start Self-Propelled Petrol Lawnmower

The Hyundai petrol mower is a different beast entirely. It offers raw, uncompromising power suitable for the largest and toughest lawns. With its 139cc engine, it will chew through thick, wet, and overgrown grass without breaking a sweat. It also features a self-propelled drive and a wide 42cm cut. The main trade-offs are significant: it’s much heavier, louder, requires ongoing maintenance (oil, petrol, spark plugs), and produces emissions. A user should opt for the Hyundai if they have a very large property or deal with challenging conditions where the runtime and power of a battery model would be insufficient.

3. Einhell GE-CM 18/30 Li Solo Cordless Lawnmower

The Einhell represents a more compact and budget-focused alternative. With a smaller 30cm cutting width and a 25L grass box, it’s designed specifically for very small lawns, courtyards, or as a secondary mower for tight areas. Its main selling point is its place within the Power X-Change battery ecosystem, making it a great value proposition if you already own other Einhell tools. However, it’s sold “solo” (without battery or charger), and its performance and capacity are significantly lower than the LawnMaster. This is the right choice for someone on a strict budget with a very small, simple lawn.

Final Verdict: The Smart Choice for the Modern Garden

After extensive testing and analysis, our conclusion is clear: the LawnMaster MX 24V 37cm Cordless Lawnmower with 2x 4.0Ah Batteries is an outstanding all-around package for anyone with a small to medium-sized lawn looking to escape the tyranny of the power cord. It strikes an exceptional balance between power, performance, and user-friendly design. Its standout feature is the dual-battery system with a fast charger, which effectively solves the runtime anxiety that plagues many other cordless models. Add to that a high-quality cut, the desirable striped finish from its rear roller, and its lightweight, easy-to-store design, and you have a truly compelling product.

While it may not have the brute force for tackling acres of overgrown fields, it was never designed to. For its intended user—the typical homeowner who wants a beautiful lawn without the hassle—it is a resounding success. It transforms a weekend chore into a quick, quiet, and satisfying task. If you’re ready to cut the cord and experience the convenience of modern battery-powered mowing, we wholeheartedly recommend this machine. You can get the LawnMaster MX 24V 37cm Cordless Lawnmower with 2x 4.0Ah Batteries and upgrade your lawn care routine today.