PowerSmart PS76421 Battery Powered Push Lawn Mower (21-Inch, 40V, Two 4.0Ah Batteries, 6-Position Height)
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AVERAGE
68
Winnowl Index
Winnowl Verdict
We just finished auditing the PowerSmart PS76421 Battery Powered Push Lawn Mower, and while it reaches a MEDIOCRE (61) Winnowl Index, the high price floor creates a significant barrier to entry for the average buyer. This rating is driven by Mediocre Value at $329.99; that high cost basically cancels out the Average Brand Strength and Average Performance. The PowerSmart PS76421 Battery Powered Push Lawn Mower (21-Inch, 40V, Two 4.0Ah Batteries, 6-Position Height) delivers a Cutting Width of 21 inches—implying performing at a baseline level—but the cost is 26% above the class average. We recommend a pivot from this Value Laggard; paying a 26% premium for 20% less hardware density is a tough sell for most budgets.
Market Value Index
Mediocre
$329.99
Overpriced
Fair
High Value
The Mediocre Value rating is driven by a $329.99 cost that results in 20% lower hardware efficiency than the $262.51 class mean.
Performance Rating
Strong
While the Average Performance sits 15% above the average and the 21 inches Cutting Width suggests performing at a baseline level, these gains are offset by the 2 Years Warranty where you should feel confident that the manufacturer will stand behind the machine for a reasonable portion of its service life.
Brand Strength
Average
Data for PowerSmart confirms Average Brand Strength; that entry cost essentially buys you Average Brand Reliability and Mediocre Brand Trust.
Available At
$329.99
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The Winnowl Lab Report
| Specification | Value | Rating | Vs. Average | Winnowl Insight |
|---|---|---|---|---|
| Cutting Width | 21 inches | Strong | 27% better | |
| Usable Energy Capacity | 256 Wh | Average | 30% better | |
| Number of Batteries | 2 count | Strong | 38% better | Dual-battery advantage. Provides a critical safety net and allows for continuous work on larger residential properties. |
| Warranty | 2 Years | Mediocre | 32% worse | Standard industry protection. This coverage aligns with the market average and offers a fair level of consumer security. |
| Total Capacity | 8 Ah | Strong | 28% better | |
| Total Run Time | 45 minutes | Average | 9% better | Standard duty cycle. This endurance level matches the average residential mowing session for most homeowners. |
| Cutting Height Adjustment | 6 settings | Average | 6% better | Standard precision. Offers enough variety to handle the transition from spring growth to summer dormancy. |
| Battery Voltage | 40 V | Average | 2% better | Standard residential output. This range represents the industry sweet spot for balancing battery weight with reliable cutting torque. |
| Charging Time | 120 mins | Average | 2% worse | Slow-recovery charging. Common in value-tier bundles where the charger lacks active cooling or high-amperage circuitry. |
| Single Battery Capacity | 4 Ah | Average | 4% worse |
Ranking Factors
Insights
- Value Rank: #17 out of 89.
- Performance Rank: #19 out of 89.
- Winnowl Quadrant: High Value
Strengths
- This model offers the widest Cutting Width in its class at 21 inches, significantly more than the class average of 16.57 inches.
- Ah capacity is in the top 10%, offering superior "fuel tank" size for an electric platform.
- Including batteries puts this in the Top 10% for out-of-the-box runtime.
Neutral
- A Battery Voltage of V is about average (39.08 V) but below the highest in class at 80 V.
- A Total Run Time of minutes is about average (41.30 minutes) but not as long as the class max of 70 minutes.
- A Cutting Height Adjustment of settings is about average (5.68 settings) but not as many as the class max of 10 settings.
- A Charging Time of mins is about average 117.19 mins but below the fastest at 30mins.
Weaknesses
- The Years warranty is in the bottom 10%, offering minimal long-term protection.
Comparison
| Name | Winnowl Index | Value | Performance | Brand | Price | Usable Energy Capacity | Total Run Time | Battery Voltage | Total Capacity | Cutting Width | Warranty | Charging Time | Number of Batteries | Cutting Height Adjustment | Single Battery Capacity |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PowerSmart PS76421 Battery Powered Push Lawn Mower |
AVERAGE
68
|
Mediocre | Strong | Average | $329.99 | 256 Wh | 45 minutes | 40 V | 8 Ah | 21 inches | 2 Years | 120 mins | 2 count | 6 settings | 4 Ah |
| WORX WG752 Nitro Battery Powered Push Lawn Mower |
ELITE
86
|
Fair | Strong | Strong | $332.53 | 320 Wh | 50 minutes | 40 V | 10 Ah | 20 inches | 5 Years | 120 mins | 2 count | 7 settings | 5 Ah |
| PowerSmart 80V MAX 21in. Cordless Push Lawn Mower |
STRONG
79
|
Mediocre | Strong | Average | $399.99 | 384 Wh | 60 minutes | 80 V | 6 Ah | 21 inches | 4 Years | 75 mins | 1 count | 7 settings | 6 Ah |
| LiTHELi Electric Lawn Mower |
AVERAGE
73
|
Exceptional | Average | Mediocre | $119.99 | 256 Wh | 30 minutes | 40 V | 8 Ah | 17 inches | 3 Years | 120 mins | 2 count | 6 settings | 4 Ah |
Rankings
