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BLACK+DECKER 20-Inch Corded Electric Lawn Mower vs WORX Nitro 21" Cordless Lawn Mower, Electric Mower

Updated July 2026 — BLACK+DECKER 20-Inch Corded Electric Lawn Mower wins on bag size, WORX Nitro 21" Cordless Lawn Mower, Electric Mower wins on power and runtime.

The WORX Nitro offers superior power and convenience, making it the better choice for larger lawns, while the BLACK+DECKER is a budget-friendly option for smaller spaces.

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

Price

BLACK+DECKER is cheaper by 28%

Maintenance

Simpler maintenance with fabric grass bag

Weight

Lighter weight for easier handling

Why WORX Nitro 21" Cordless Lawn Mower, Electric Mower is better

Power

Brushless motor delivers 40% more power

Self-Propelled

Easier navigation with self-propelled feature

Runtime

Longer runtime with dual batteries

Overall score

BLACK+DECKER 20-Inch Corded Electric Lawn Mower
70
WORX Nitro 21" Cordless Lawn Mower, Electric Mower
85

Specifications

SpecBLACK+DECKER 20-Inch Corded Electric Lawn MowerWORX Nitro 21" Cordless Lawn Mower, Electric Mower
Motor TypeBrushedBrushless
Cutting Modes3-in-13-in-1
Height Adjustment7 Positions7 Positions
Warranty2 Years3 Years
BatteryCordedCordless

Dimension comparison

BLACK+DECKER 20-Inch Corded Electric Lawn MowerWORX Nitro 21" Cordless Lawn Mower, Electric Mower

Overview of the BLACK+DECKER 20-Inch Corded Electric Lawn Mower

The BLACK+DECKER 20-Inch Corded Electric Lawn Mower is an affordable option for homeowners seeking a reliable and efficient lawn care tool. Priced at $259.00, it features a 13 Amp motor that provides ample power for cutting through thick grass and overgrowth. This mower offers a 3-in-1 cutting system, allowing for mulching, bagging, or side discharge, making it versatile for different lawn care needs. With a sales rank of 31,868, it is a decent performer in the market, although it may not be the top choice for everyone.

Overview of the WORX Nitro 21" Cordless Lawn Mower

In contrast, the WORX Nitro 21" Cordless Lawn Mower commands a higher price of $359.99 but offers advanced features that justify the cost. With a brushless motor that delivers 40% more power and 10% longer runtime than previous models, it is ideal for lawns up to ½ acre. The self-propelled design with variable speed allows for easier navigation over uneven terrain. With a sales rank of 4,191, it shows a strong presence in the market, appealing to those looking for power and convenience in their mowing experience.

Power and Performance

When it comes to power, the WORX Nitro outshines the BLACK+DECKER with its brushless motor technology that enhances efficiency and runtime. The BLACK+DECKER’s 13 Amp motor is robust but lacks the advanced features of the WORX. The WORX mower can handle tougher conditions and offers a self-propelled function with variable speeds of up to 3.7 MPH, making it easier to mow on inclines. This performance difference is significant, especially for users with larger or more challenging lawns.

Cutting Versatility

Both mowers offer versatile cutting options, but they achieve this in different ways. The BLACK+DECKER mower features a 3-in-1 cutting system, which allows for mulching, bagging, and side discharge. Its height adjustment lever has seven settings ranging from 1.5 inches to 4 inches, providing a range of cutting heights. On the other hand, the WORX Nitro also delivers 3-in-1 functionality and includes the same height adjustment range. However, it incorporates aerodeck technology to enhance cut quality and minimize clumping, making it more efficient in maintaining lawn aesthetics.

Convenience and Ease of Use

Convenience is a strong suit for both mowers, but they cater to different preferences. The BLACK+DECKER mower, being corded, eliminates the need for battery management, allowing for continuous use without the risk of running out of power. However, it may limit mobility due to the cord length. The WORX Nitro, with its cordless design powered by two 20V 5.0Ah batteries, allows for greater freedom of movement around the yard. The self-propelled feature of the WORX mower also reduces physical exertion, making it easier to handle for users who may struggle with pushing a traditional mower.

Maintenance and Durability

In terms of maintenance, the BLACK+DECKER mower's simplicity may appeal to those who prefer a lower-maintenance option. It features a fabric grass bag that makes it easy to check when it's full, and the 2-year warranty provides peace of mind. Conversely, the WORX Nitro’s brushless motor is designed for longevity, promising a longer lifespan and reduced maintenance needs compared to traditional motors. The high-strength polymer deck of the WORX mower is engineered to resist impact and corrosion, providing added durability for users who need a mower that can withstand tough conditions.

Price Point Comparison

The BLACK+DECKER is about 28% cheaper than the WORX Nitro, making it a more budget-friendly option at $259.00 compared to $359.99. This price difference may be substantial for budget-conscious consumers, especially those with smaller yards who may not require the advanced features of the WORX mower. However, for those willing to invest more upfront, the WORX Nitro offers enhanced power, efficiency, and features that could save time and effort in the long run.

Which should you buy?

Choosing between the BLACK+DECKER 20-Inch Corded Electric Lawn Mower and the WORX Nitro 21" Cordless Lawn Mower ultimately depends on your specific lawn care needs and budget. If you're looking for a reliable, cost-effective mower for smaller lawns and easy maintenance, the BLACK+DECKER is a solid choice. However, if you need more power, versatility, and convenience, especially for larger or more varied terrains, the WORX Nitro provides superior performance and features that justify its higher price.