Best Cordless Push Mowers: EGO vs Ryobi vs Greenworks

The Shift to Battery-Powered Lawn Care

For decades, the gas-powered push mower was the undisputed king of suburban lawn care. However, the landscape of yard maintenance is rapidly evolving. Homeowners and landscaping professionals alike are abandoning pull-cords, carburetor cleanings, and winterization routines in favor of high-torque, zero-emission cordless electric mowers. The environmental impact of this shift is significant. According to the California Air Resources Board (CARB), small off-road engines (SORE) like those found in traditional gas mowers produce disproportionately high levels of volatile organic compounds (VOCs) and nitrogen oxides. By transitioning to battery-powered equipment, homeowners drastically reduce their carbon footprint and eliminate the risk of toxic fuel spills on their turf.

But with dozens of brands flooding the market, choosing the right cordless mower can be overwhelming. In this comprehensive product review and comparison, we break down the top three contenders in the residential push mower space: EGO Power+, Ryobi, and Greenworks. We will evaluate their battery ecosystems, cutting performance, deck designs, and overall value to help you make an informed investment for your lawn.

Key Factors When Choosing a Cordless Mower

Before diving into specific models, it is crucial to understand the metrics that dictate a cordless mower's performance. Unlike gas mowers, where engine displacement (CCs) is the primary metric, electric mowers rely on voltage, amp-hours, and motor type.

• Voltage (V) and Amp-Hours (Ah): Voltage determines the raw power and torque of the mower, allowing it to push through thick, wet grass. Amp-hours dictate the size of the fuel tank, or how long the mower will run on a single charge. A 56V system will generally offer more torque than a 40V system, but a 40V system with a high Ah battery can still provide excellent runtime.
• Brushless vs. Brushed Motors: Always opt for a brushless motor. Brushless motors use magnets instead of carbon brushes, resulting in less friction, less heat generation, longer lifespan, and better battery efficiency. All top-tier mowers now feature brushless technology.
• Deck Material: Steel decks are durable and provide a premium mulching vacuum but are prone to rust if not cleaned. Polypropylene (plastic) decks are lightweight, rust-proof, and ideal for coastal or humid environments, though they may feel less substantial.

Top Contenders: EGO, Ryobi, and Greenworks

EGO Power+ 21-Inch 56V Cordless Mower

EGO has long been considered the gold standard in the cordless outdoor power equipment industry. Their flagship 21-inch 56V push mower utilizes an Arc Lithium battery that delivers power comparable to a 160cc gas engine. The standout feature of the EGO mower is the Select Cut Multi-Blade System. This allows users to swap between a standard mulching blade, a high-lift bagging blade, and a specialized lower RPM blade designed to extend battery runtime by up to 20%.

Pros: Unmatched cutting power, weather-resistant construction, rapid 60-minute charging time, and a robust 5-year tool warranty.
Cons: Premium price point (typically ranging from $500 to $650 with battery and charger), and the 56V battery ecosystem, while excellent, is strictly limited to EGO brand tools.

Ryobi 40V 20-Inch Cordless Mower

Ryobi approaches the lawn care market with a focus on accessibility, budget-friendliness, and cross-platform compatibility. Their 40V 20-inch push mower is part of the massively popular Ryobi 40V Whisper Series, designed to operate at significantly lower decibel levels than competitors, making it perfect for early morning mowing in noise-restricted neighborhoods. The 20-inch poly deck is lightweight and rust-proof, and the mower features a single-point height adjustment lever, allowing you to change the cutting height of all four wheels simultaneously.

Pros: Extremely affordable (often found around $350-$400), ultra-quiet operation, lightweight maneuverability, and access to the vast Ryobi 40V ecosystem covering hundreds of tools.
Cons: The 40V system can bog down in exceptionally thick or wet Bermuda and St. Augustine grasses, and the poly deck does not mulch as finely as EGO's steel deck.

Greenworks 60V 21-Inch Cordless Mower

Greenworks bridges the gap between EGO's premium power and Ryobi's affordability with their 60V platform. The Greenworks 21-inch push mower features a unique dual-battery port system. While it only requires one 60V battery to operate, the secondary port allows you to keep a backup battery plugged in and ready to automatically engage if the first battery depletes mid-mow. The mower features a heavy-duty steel deck and a high-efficiency brushless motor that provides excellent torque for tackling overgrown cool-season lawns.

Pros: High torque 60V system, dual battery ports for extended runtime, steel deck for superior mulching, and aggressive pricing during seasonal sales.
Cons: Heavier than the Ryobi, making it slightly more fatiguing to push on sloped terrain, and the 60V battery ecosystem is smaller than Ryobi's.

Head-to-Head Comparison Chart

Battery Ecosystem and Long-Term Value

When purchasing a cordless mower, you are not just buying a tool; you are buying into a battery ecosystem. If you already own Ryobi 40V string trimmers, leaf blowers, or hedge trimmers, purchasing the Ryobi mower makes financial sense, as you can buy the "tool-only" version and save over $200 by utilizing your existing batteries. Conversely, if you are starting from scratch and prioritize raw landscaping power, EGO's 56V lineup offers commercial-grade performance across their entire catalog, including snow blowers and chainsaws. Greenworks offers a solid middle ground, providing robust power for standard lawn care tasks without the premium price tag of EGO.

Best Practices for Mowing with Cordless Mowers

To maximize your battery life and maintain a healthy turf, proper mowing technique is just as important as the hardware you use. The Penn State Extension emphasizes the critical importance of the "one-third rule," which dictates that you should never remove more than one-third of the grass blade length in a single mowing session. Cutting too much at once shocks the root system, making the lawn susceptible to drought stress, weed invasion, and disease.

Furthermore, cordless mowers excel at mulching, provided you mow frequently enough. The University of Minnesota Extension highly recommends leaving grass clippings on the lawn rather than bagging them. Clippings decompose rapidly and return vital nutrients, including nitrogen, phosphorus, and potassium, back into the soil. Because electric mowers do not generate the same high-velocity air vacuum as gas mowers, ensuring your blades are razor-sharp is essential for a clean mulching cut. Dull blades will tear the grass, leading to brown, frayed tips and increased moisture loss.

Lithium-Ion Battery Maintenance Tips

The most expensive component of your cordless mower is the lithium-ion battery. To protect your investment and ensure the cells last for hundreds of charge cycles, follow these storage guidelines:

• Avoid Extreme Temperatures: Never store your batteries in a freezing garage during winter or a sweltering shed in the summer. Extreme heat degrades the internal chemistry, while freezing temperatures can cause permanent cell damage. Store batteries indoors at room temperature.
• Long-Term Storage Voltage: If you are putting the mower away for the winter, do not store the battery at 100% capacity or 0%. Lithium-ion batteries are most stable at roughly 50% to 75% charge. Many modern EGO and Greenworks chargers feature a "storage mode" that automatically discharges or charges the battery to the optimal storage voltage.
• Keep Contacts Clean: Wipe down the battery terminals and the mower's connection ports with a dry cloth periodically to remove grass dust and moisture, which can cause corrosion and voltage drops.

Final Verdict: Which Mower Should You Buy?

The best cordless push mower ultimately depends on your specific lawn care needs, budget, and existing tool collection. If you have a medium-to-large yard with thick, dense grass and you want a premium, gas-replacement experience with the best mulching capabilities on the market, the EGO Power+ 56V is the undisputed champion. Its Select Cut blade system and weather-resistant build justify the higher price tag.

For homeowners with small to medium-sized lawns, flat terrain, and a desire for quiet operation, the Ryobi 40V Whisper Series is an outstanding, budget-friendly choice. Its lightweight poly deck makes it incredibly easy to maneuver, and the vast 40V ecosystem ensures your battery investment will pay dividends across dozens of other home improvement tools.

Finally, the Greenworks 60V serves as the perfect compromise. It delivers the heavy-duty steel deck and high torque required for tough mowing conditions but remains slightly more accessible in price than the EGO. Whichever brand you choose, transitioning to a cordless push mower will save you hours of seasonal maintenance, eliminate toxic emissions, and provide a cleaner, quieter, and more enjoyable lawn care experience.