BLACK+DECKER 20-Inch Corded Electric Lawn Mower vs PowerSmart Self Propelled Gas Lawn Mower 21-inch
Updated July 2026 — BLACK+DECKER 20-Inch Corded Electric Lawn Mower wins on bag capacity and height, PowerSmart Self Propelled Gas Lawn Mower 21-inch wins on power and weight.
The BLACK+DECKER mower is a cost-effective choice for smaller yards, while the PowerSmart offers more power and efficiency for larger lawns.
Why BLACK+DECKER 20-Inch Corded Electric Lawn Mower is better
Price
BLACK+DECKER is $80 cheaper.
Weight
BLACK+DECKER is ultra-light for easy maneuverability.
Height Adjustment
BLACK+DECKER has 7 height settings.
Why PowerSmart Self Propelled Gas Lawn Mower 21-inch is better
Power
PowerSmart has a more powerful engine.
Cutting Width
PowerSmart has a 21-inch cutting width.
Sales Rank
PowerSmart has a higher sales rank.
Overall score
Specifications
| Spec | BLACK+DECKER 20-Inch Corded Electric Lawn Mower | PowerSmart Self Propelled Gas Lawn Mower 21-inch |
|---|---|---|
| Motor Type | Electric | Gas |
| Cutting Options | 3-in-1 | 3-in-1 |
| Height Settings | 7 | 6 |
| Self-Propelled | No | Yes |
| Warranty | 2 Years | Not Specified |
Dimension comparison
Overview of the BLACK+DECKER 20-Inch Corded Electric Lawn Mower
The BLACK+DECKER 20-Inch Corded Electric Lawn Mower is priced at $259.00, making it the cheaper option compared to the PowerSmart Self Propelled Gas Lawn Mower, which retails for $339.99. This electric mower is designed for homeowners looking for a lightweight and versatile lawn care tool. It features a robust 13 Amp motor that delivers ample power for cutting through thick grass and overgrowth. Additionally, the mower offers 3-in-1 functionality for mulching, bagging, and side discharge, making it a versatile choice for various mowing needs.
Performance and Power
When it comes to performance, the PowerSmart Self Propelled Gas Lawn Mower boasts a more powerful 170cc OHV 4-Cycle Engine compared to the BLACK+DECKER's 13 Amp motor. The gas engine is designed for improved cutting efficiency and easy starting, which is ideal for those with larger or uneven yards. The BLACK+DECKER mower, while powerful for an electric model, might struggle with very thick or tall grass compared to the gas-powered alternative. This performance gap could be significant for homeowners who face challenging mowing conditions.
Cutting Width and Versatility
The PowerSmart mower has a 21-inch cutting width, which is slightly larger than the BLACK+DECKER's 20-inch width. This extra inch may seem minor, but it allows users to cover more ground in less time, making it particularly advantageous for larger lawns. Both mowers offer multiple cutting options, with the BLACK+DECKER providing 3-in-1 functionality and the PowerSmart also featuring side discharge, mulching, and rear-bagging capabilities. However, the larger deck of the PowerSmart may give it an edge in terms of efficiency for more extensive mowing tasks.
Weight and Maneuverability
The BLACK+DECKER mower is ultra-light, which enhances its maneuverability. Its design is particularly suited for homeowners who may need to navigate tight spaces or have smaller yards. In contrast, the PowerSmart mower, weighing 54 lbs, is self-propelled, making it easier to handle on slopes and uneven terrain. While the BLACK+DECKER's lightweight nature aids in easy transport and storage, the self-propulsion feature of the PowerSmart model can make mowing less physically demanding, especially on inclines.
Height Adjustment Features
Both mowers offer adjustable cutting heights, but they differ in the number of settings. The BLACK+DECKER features a single lever with 7 height settings ranging from 1.5 inches to 4 inches. The PowerSmart mower allows for a 6-position adjustment, with cutting heights from 1.5 inches to 3.9 inches. This slight difference may not be significant for most users, but the additional options on the BLACK+DECKER may provide more flexibility for achieving the desired lawn height and finish.
Grass Bag Capacity and Convenience
The BLACK+DECKER mower comes with a 13-gallon fabric grass bag, which makes it easy to monitor when it’s full. In comparison, the PowerSmart mower features a 1.4-bushel capacity grass bag, which is slightly smaller but still adequate for most residential lawns. The fabric design of the BLACK+DECKER's bag adds convenience by allowing users to see when it needs to be emptied, while the PowerSmart's bag is also designed for easy emptying, saving time and effort during mowing sessions.
Brand Reputation and Sales Rank
The BLACK+DECKER mower has a sales rank of 31,868, while the PowerSmart mower enjoys a higher sales rank of 9,309, indicating that it might be more popular among consumers. This difference could suggest that buyers are finding the PowerSmart model preferable, possibly due to its self-propelled feature and gas-powered efficiency. Brand reputation also plays a role in consumer confidence, and both brands are known for their quality in lawn care equipment, but the sales rank may influence perceptions of reliability and performance.
Which should you buy?
Choosing between the BLACK+DECKER 20-Inch Corded Electric Lawn Mower and the PowerSmart Self Propelled Gas Lawn Mower ultimately depends on your specific needs and lawn care preferences. The BLACK+DECKER mower is about 17% cheaper at $259.00 and is ideal for those with smaller yards who prefer an electric model for its lightweight design and ease of use. On the other hand, the PowerSmart mower, priced at $339.99, offers more power and a larger cutting width, making it suitable for larger, more challenging lawns. If you prioritize performance and versatility over cost, the PowerSmart may be the better option. However, for straightforward, light-duty mowing tasks, the BLACK+DECKER stands out as a practical choice.

