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BLACK+DECKER 20-Inch Corded Electric Lawn Mower vs Greenworks 80V 21" Self-Propelled Cordless Lawn

Updated July 2026 — Greenworks 80V 21" Self-Propelled Cordless Lawn leads on battery life and weight.

The Greenworks mower offers superior performance and features, making it the better choice for those willing to invest more. However, the BLACK+DECKER is a solid budget option for smaller lawns.

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

Price

BLACK+DECKER is $220.99 cheaper

Weight

BLACK+DECKER is lighter and easier to maneuver

Simplicity

BLACK+DECKER has tool-free height adjustments

Why Greenworks 80V 21" Self-Propelled Cordless Lawn is better

Power

Greenworks has a brushless motor with 30% more torque

Cutting Versatility

Greenworks offers a 4-in-1 cutting system

Convenience

Greenworks features self-propulsion and LED lights

Overall score

BLACK+DECKER 20-Inch Corded Electric Lawn Mower
70
Greenworks 80V 21" Self-Propelled Cordless Lawn
85

Specifications

SpecBLACK+DECKER 20-Inch Corded Electric Lawn MowerGreenworks 80V 21" Self-Propelled Cordless Lawn
Motor TypeCordedBrushless
Cutting Modes3-in-14-in-1
Warranty2 YearsBest-in-class
Self-PropelledNoYes
LED LightsNoYes

Dimension comparison

BLACK+DECKER 20-Inch Corded Electric Lawn MowerGreenworks 80V 21" Self-Propelled Cordless Lawn

Price Comparison

The BLACK+DECKER 20-Inch Corded Electric Lawn Mower is priced at $259.00, making it significantly more affordable than the Greenworks 80V 21" Self-Propelled Cordless Lawn Mower, which retails for $479.99. This results in a price difference of about $220.99, or approximately 85% cheaper. For budget-conscious consumers looking for a reliable lawn mower, the BLACK+DECKER offers a solid option without breaking the bank. Conversely, the Greenworks model, while pricier, justifies its cost with advanced features and technology, appealing to those who prioritize performance and convenience in their lawn care routine.

Power and Performance

The Greenworks 80V Self-Propelled Cordless Lawn Mower is equipped with a highly efficient brushless motor that generates 30% more torque than standard models, enhancing its cutting power and efficiency. In contrast, the BLACK+DECKER 20-Inch Corded Electric Lawn Mower features a robust 13 Amp motor, which is adept at handling thick grass and overgrowth. While both mowers deliver solid performance, the Greenworks model excels in delivering consistent power without the noise and fumes associated with gas-powered alternatives. This makes it an ideal choice for homeowners who want to tackle tougher lawns with ease.

Cutting Versatility

When it comes to cutting versatility, both mowers have their strengths. The BLACK+DECKER offers a 3-in-1 cutting system, allowing users to mulch, bag, or side discharge grass clippings as needed. It also features a single lever for easy height adjustments across seven settings, ranging from 1.5 inches to 4 inches. On the other hand, the Greenworks mower takes versatility a step further with its 4-in-1 cutting system, which includes mulching, bagging, side discharge, and turbo leaf pickup capabilities. This added functionality, combined with its self-propelled feature, provides more adaptability for various mowing conditions and user preferences.

Convenience and Ease of Use

The BLACK+DECKER mower is designed for simplicity, with tool-free height adjustments and a fabric grass bag that makes checking for fullness easy. Its lightweight design also enhances maneuverability, making it user-friendly for those who may not be as physically strong. In contrast, the Greenworks mower excels in convenience with its self-propelled mechanism and variable speed control, enabling effortless navigation across various terrains. Additionally, it is equipped with LED headlights, allowing for mowing in low-light conditions, which is particularly useful for early mornings or late evenings. Overall, the Greenworks model offers greater ease of use, particularly for larger or uneven lawns.

Durability and Build Quality

In terms of durability, the Greenworks 80V mower features a durable steel deck that enhances its longevity and resilience against wear and tear. This robust construction is essential for a self-propelled mower that will likely encounter tougher grass and uneven terrain. The BLACK+DECKER mower, while still solid, is designed more for light to moderate lawn care and may not withstand the same level of abuse as the Greenworks model. Both brands offer warranties, but users looking for a long-lasting investment may find the sturdier frame of the Greenworks preferable.

Battery Life and Runtime

The Greenworks mower operates on an 80V battery, which allows it to cut up to half an acre on a single charge, depending on grass conditions and user technique. This extended runtime makes it suitable for larger yards without the hassle of frequent recharging. In contrast, the BLACK+DECKER model is corded, meaning it does not have a battery life limitation but does require proximity to an electrical outlet. While this ensures continuous operation without worrying about battery depletion, it can limit mobility compared to the cordless design of the Greenworks mower.

Environmental Impact

Both mowers are electric, which significantly reduces their environmental impact compared to traditional gas-powered options. However, the Greenworks mower stands out with its brushless motor that operates quietly and efficiently, producing less noise pollution and no emissions. This eco-friendly design is particularly appealing for environmentally conscious consumers. The BLACK+DECKER mower, while also electric, is corded and may not offer the same level of environmental benefits regarding noise and emissions as its cordless counterpart.

Which should you buy?

Ultimately, the choice between the BLACK+DECKER 20-Inch Corded Electric Lawn Mower and the Greenworks 80V 21" Self-Propelled Cordless Lawn Mower boils down to your specific needs and budget. If you are looking for an affordable, lightweight option for smaller lawns and have a limited budget, the BLACK+DECKER mower is an excellent choice. However, if you desire a more advanced, feature-rich mower with superior performance, self-propulsion, and the convenience of cordless operation, the Greenworks model is worth the higher investment. Consider your lawn size, terrain, and how much you are willing to spend to make the best decision for your lawn care needs.