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BLACK+DECKER 20-Inch Corded Electric Lawn Mower vs Greenworks 40V 17" Cordless Lawn Mower – Brushless

Updated July 2026 — BLACK+DECKER 20-Inch Corded Electric Lawn Mower wins on weight and cutting deck, Greenworks 40V 17" Cordless Lawn Mower – Brushless wins on runtime and power.

The BLACK+DECKER mower offers more power and a larger cutting deck at a lower price, while the Greenworks mower provides cordless convenience and quieter operation.

Why BLACK+DECKER 20-Inch Corded Electric Lawn Mower is better

Price

BLACK+DECKER is $20 cheaper

Power

13 Amp motor vs brushless motor

Cutting Deck

20-inch deck vs 17-inch deck

Why Greenworks 40V 17" Cordless Lawn Mower – Brushless is better

Cordless

Greenworks offers cordless operation

Noise Level

30% quieter than gas mowers

Warranty

3-year warranty vs 2-year warranty

Overall score

BLACK+DECKER 20-Inch Corded Electric Lawn Mower
85
Greenworks 40V 17" Cordless Lawn Mower – Brushless
78

Specifications

SpecBLACK+DECKER 20-Inch Corded Electric Lawn MowerGreenworks 40V 17" Cordless Lawn Mower – Brushless
Motor TypeCordedCordless
Cutting Modes32
Warranty2 years3 years
Noise LevelHigherLower
Price$259.00$279.99

Dimension comparison

BLACK+DECKER 20-Inch Corded Electric Lawn MowerGreenworks 40V 17" Cordless Lawn Mower – Brushless

Design and Build Quality

Both the BLACK+DECKER 20-Inch Corded Electric Lawn Mower and the Greenworks 40V 17" Cordless Lawn Mower offer thoughtful designs that cater to different user needs. The BLACK+DECKER mower features a 20-inch cutting deck, allowing it to cover more ground quickly, while the Greenworks mower has a smaller 17-inch deck which may be better suited for tighter spaces. The BLACK+DECKER model is a corded electric mower that requires an electrical outlet, which can limit mobility, but offers consistent power without the need for battery charging. In contrast, the Greenworks cordless mower provides up to 35 minutes of runtime on a single charge, providing more freedom to maneuver without being tethered to an outlet.

Cutting Performance

When it comes to cutting performance, the BLACK+DECKER mower boasts a 13 Amp motor, delivering ample power to tackle thick grass and overgrowth effectively. This model offers three cutting modes: mulching, bagging, and side discharge, allowing for versatility depending on lawn care needs. The Greenworks mower, with its brushless motor, offers a quieter operation—30% less noise than gas mowers—and features a 2-in-1 mulching and bagging capability, which is ideal for maintaining a clean finish. The flexibility in adjusting cutting heights is also notable; the BLACK+DECKER mower has seven different settings, while the Greenworks mower allows for six, making both suitable for various grass types.

Weight and Maneuverability

The weight and maneuverability of lawn mowers can significantly affect user experience, especially during extended use. The BLACK+DECKER 20-Inch mower is designed to be ultra-light, making it easier to push and navigate around the yard. The Greenworks mower, while also lightweight, has a slightly smaller design that enhances maneuverability in tight spaces. The compact size of the Greenworks mower can be an advantage for users with smaller yards, but the larger cutting deck of the BLACK+DECKER can mean fewer passes needed on bigger lawns. Thus, the choice between the two may hinge on the size of the lawn and the user's physical comfort during operation.

Maintenance and Upkeep

Maintenance plays a crucial role in the long-term satisfaction of lawn mower ownership. The BLACK+DECKER mower requires minimal maintenance, but being corded means users need to be cautious with the cord. It comes with a 13-gallon fabric grass bag that allows for easy checking when full. On the other hand, the Greenworks mower's brushless motor requires no oil changes or pull cords, translating to very low maintenance needs. The added benefit of a three-year warranty on both the tool and battery enhances peace of mind for the Greenworks model. Users may find the Greenworks mower's maintenance approach leads to more convenience overall.

Pricing and Value

In terms of pricing, the BLACK+DECKER mower is currently priced at $259.00, while the Greenworks model comes in at $279.99. This makes the BLACK+DECKER about 7% cheaper than the Greenworks mower. However, the higher price of the Greenworks mower could be justified by its cordless convenience and capability to operate quietly, making it a better fit for those who prioritize these features. Additionally, the Greenworks model has a higher sales rank at 5,110 compared to the BLACK+DECKER’s rank of 31,868, suggesting a stronger preference in the market for the Greenworks mower.

Battery Life and Power

Battery life is a critical factor for users considering a cordless lawn mower. The Greenworks mower, equipped with a 4.0Ah battery, offers up to 35 minutes of runtime per charge, which is suitable for small to medium yards. The BLACK+DECKER mower does not have a battery to manage, providing consistent power through its 13 Amp motor, which eliminates concerns about running out of battery mid-mow. For users who prefer the freedom of movement without cords, the Greenworks option is ideal, while those who want uninterrupted power throughout their mowing session may lean towards the BLACK+DECKER model.

Warranty and Support

Warranty and support can greatly influence a consumer's decision. The BLACK+DECKER mower comes with a two-year warranty, which is standard but shorter than the Greenworks warranty. The Greenworks mower boasts a worry-free three-year warranty for both the tool and battery, offering additional assurance for users concerned about longevity and potential issues. The extended warranty on the Greenworks mower may provide more peace of mind for buyers, especially for those investing in a cordless model where battery performance can be a concern over time.

Which should you buy?

In conclusion, the choice between the BLACK+DECKER 20-Inch Corded Electric Lawn Mower and the Greenworks 40V 17" Cordless Lawn Mower ultimately depends on individual preferences and lawn care needs. The BLACK+DECKER offers a larger cutting deck, greater power, and a lower price, making it suitable for larger lawns and those seeking consistent performance. However, the Greenworks mower provides the convenience of cordless operation, quieter performance, and a longer warranty, appealing to those with smaller spaces or who prioritize ease of use. Weighing these factors will help consumers make an informed decision based on their specific requirements.