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BLACK+DECKER 20-Inch Corded Electric Lawn Mower vs PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn

Updated July 2026 — BLACK+DECKER 20-Inch Corded Electric Lawn Mower wins on height adjustment and warranty, PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn wins on power and weight.

The BLACK+DECKER mower is a cost-effective and easy-to-maintain option for smaller yards, while the PowerSmart offers superior power and efficiency for larger areas.

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

Price

BLACK+DECKER is $38.49 cheaper.

Weight

BLACK+DECKER is lighter and easier to handle.

Maintenance

BLACK+DECKER requires less maintenance.

Why PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn is better

Power

PowerSmart has a more powerful engine.

Cutting Width

PowerSmart has a wider cutting width.

Self-Propelled

PowerSmart offers self-propelled features.

Overall score

BLACK+DECKER 20-Inch Corded Electric Lawn Mower
75
PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn
85

Specifications

SpecBLACK+DECKER 20-Inch Corded Electric Lawn MowerPowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn
Motor TypeElectricGas
Cutting Modes3-in-13-in-1
Drive TypePushSelf-Propelled
Deck MaterialPlasticSteel
Height Range1.5-4 in1.5-3.9 in

Dimension comparison

BLACK+DECKER 20-Inch Corded Electric Lawn MowerPowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn

Overview of the BLACK+DECKER and PowerSmart Lawn Mowers

The BLACK+DECKER 20-Inch Corded Electric Lawn Mower is priced at $259.00, while the PowerSmart 21-Inch Gas Self-Propelled Lawn Mower costs $297.49. The BLACK+DECKER mower is about 13% cheaper than the PowerSmart mower. Both models offer versatility in cutting options, but they cater to different user preferences and yard sizes. The BLACK+DECKER is electric, making it quieter and more environmentally friendly, while the PowerSmart relies on gas, providing the power needed for tougher mowing jobs.

Power and Performance

When it comes to power, the PowerSmart mower features a 170cc OHV engine, which is known for its smooth start-up and consistent performance. This engine is particularly advantageous for tackling tough mowing jobs. In contrast, the BLACK+DECKER mower is equipped with a 13 Amp motor, which provides sufficient power for cutting through thick grass and overgrowth. While the BLACK+DECKER is designed for efficiency in smaller to medium-sized yards, the PowerSmart’s gas engine makes it suitable for larger areas, offering a powerful performance that can handle various terrain types.

Cutting Width and Efficiency

The BLACK+DECKER boasts a 20-inch cutting width, while the PowerSmart has a wider 21-inch cutting width. This additional inch may seem minor, but it can significantly reduce mowing time, especially for medium to large yards. The PowerSmart mower's robust steel deck enhances its durability, making it capable of covering larger areas more efficiently. In comparison, the BLACK+DECKER mower's edge-max deck design allows for close cutting to fences and landscape borders, ensuring a clean finish without needing additional trimming.

Versatility in Mowing Options

Both mowers offer versatile cutting options, but they do so in slightly different ways. The BLACK+DECKER features a 3-in-1 cutting versatility that includes mulching, bagging, and side discharge. This allows users to choose how they want to handle grass clippings, making it adaptable to various lawn care needs. Similarly, the PowerSmart mower provides a 3-in-1 function with bagging, mulching, and rear discharge capabilities. This makes it equally flexible for different mowing preferences. However, the PowerSmart’s larger bagging capacity and rear discharge functionality may appeal more to those who prioritize efficiency.

Height Adjustment Features

The BLACK+DECKER mower offers a single lever that easily adjusts the cutting height with seven settings ranging from 1.5 inches to 4 inches. This variety allows users to customize their mowing experience based on seasonal changes or personal preference. In contrast, the PowerSmart mower provides a 6-position height adjustment that ranges from 1.5 inches to 3.9 inches. While both models allow for easy height adjustments, the BLACK+DECKER’s additional setting gives it a slight edge for those who want more precise control over their lawn's appearance.

Maneuverability and Ease of Use

Maneuverability is an important factor when choosing a lawn mower. The PowerSmart's self-propelled feature, combined with its large rear wheels, offers excellent traction and maneuverability, especially on slopes or uneven terrain. This makes it easier to navigate challenging yards. On the other hand, the BLACK+DECKER mower is lightweight and designed for ease of use, which can be advantageous for those who prefer a more straightforward mowing experience. However, it lacks the self-propelled feature, which may require more effort when handling larger yards.

Maintenance and Longevity

Maintaining lawn mowers can vary significantly between electric and gas models. The BLACK+DECKER's electric design eliminates the need for gas, oil changes, or spark plug replacements, making it easier to maintain. It also comes with a 2-year warranty, which adds peace of mind for users. Conversely, the PowerSmart mower, while powerful, may require more regular maintenance due to its gas engine. However, its durable steel deck is built to withstand the rigors of frequent use, potentially offering a longer lifespan when properly cared for.

Which should you buy?

Choosing between the BLACK+DECKER 20-Inch Corded Electric Lawn Mower and the PowerSmart 21-Inch Gas Self-Propelled Lawn Mower ultimately depends on your specific needs and preferences. If you have a smaller to medium-sized yard and prioritize convenience and ease of maintenance, the BLACK+DECKER mower is a great choice at $259.00. However, if you need a more powerful mower capable of handling larger areas and varied terrain, the PowerSmart, priced at $297.49, offers greater performance and efficiency.