Greenworks 40V 20" Brushless Push Mower, 4.0Ah Battery (Aluminum Handles + Light)
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AVERAGE
61
Winnowl Index
Winnowl Verdict
Our audit of the Greenworks 40V 20" Brushless Push Mower results in a MEDIOCRE (69) Winnowl Index; it’s a pure Premium Specialist where you're paying a clear premium for Strong Performance, making it a choice for those who value absolute quality over a low price tag. At $319.99, the Mediocre Value suggests that the Greenworks 40V 20" Brushless Push Mower is a luxury-tier choice. It doesn't compete on price, but rather on the strength of its Strong Performance and the security of its Strong reputation. The Greenworks 40V 20" Brushless Push Mower, 4.0Ah Battery (Aluminum Handles + Light) delivers Performance that is 25% above the average with a Total Run Time of 55 minutes—implying you should effectively clear larger properties or handle thick, overgrown grass that usually drains batteries quickly—but the cost is 22% above the class average. Ultimately, the Greenworks 40V 20" Brushless Push Mower is a high-caliber choice for those who refuse to compromise; you are getting Strong Performance backed by Strong Brand Strength, though you should be prepared to pay the full premium for that level of quality and security.
Market Value Index
Mediocre
$319.99
Overpriced
Fair
High Value
At $319.99, you’re capturing 11% less Performance per dollar than the $262.51 average, confirming its Mediocre Value status.
Performance Rating
Average
Delivering Strong Performance that is 25% above the average, this unit hits 55 minutes Total Run Time so that you should effectively clear larger properties or handle thick, overgrown grass that usually drains batteries quickly, even if the 1 count Number of Batteries means you should have just enough power to get the job done, but you lack a backup if the grass is thicker than expected.
Brand Strength
Strong
Data for Greenworks confirms Strong Brand Strength; that entry cost essentially buys you Average Brand Reliability and Average Brand Trust.
Available At
$319.99
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The Winnowl Lab Report
| Specification | Value | Rating | Vs. Average | Winnowl Insight |
|---|---|---|---|---|
| Total Run Time | 55 minutes | Strong | 33% better | Extended-range endurance. Provides a necessary safety buffer for thick turf or properties that push the limits of standard battery tech. |
| Total Capacity | 4 Ah | Mediocre | 36% worse | |
| Cutting Width | 20 inches | Strong | 21% better | |
| Usable Energy Capacity | 128 Wh | Average | 35% worse | |
| Number of Batteries | 1 count | Average | 31% worse | Single-pack baseline. This is the entry point for cordless mowers, providing no hot-swap capability for larger jobs. |
| Cutting Height Adjustment | 7 settings | Strong | 23% better | High-precision deck control. Allows for nuanced turf management that is usually reserved for higher-end landscaping gear. |
| 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. |
| Warranty | 3 Years | Average | 2% better | Standard industry protection. This coverage aligns with the market average and offers a fair level of consumer security. |
| Single Battery Capacity | 4 Ah | Average | 4% worse |
Ranking Factors
Insights
- Value Rank: #46 out of 89.
- Performance Rank: #50 out of 89.
- Winnowl Quadrant: Budget
Strengths
- At inches, the Cutting Width is wider than the class average (16.57 inches) but not as wide as the widest in class (21 inches).
- At minutes, the Total Run Time is longer than the class average (41.30 minutes) but not as long as the class maximum (70 minutes).
- height settings puts this in the Top 10% for granular lawn customization.
Neutral
- A Battery Voltage of V is about average (39.08 V) but below the highest in class at 80 V.
- A Warranty of Years is about average 2.95 Years but below best in class at 5 Years.
- A Charging Time of mins is about average 117.19 mins but below the fastest at 30mins.
Weaknesses
- Ah is among the lowest capacities in class, ranking in the bottom 10%.
- At only battery, this is in the bottom 10% for included power components.
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Greenworks 40V 20" Brushless Push Mower |
AVERAGE
61
|
Mediocre | Average | Strong | $319.99 | 128 Wh | 55 minutes | 40 V | 4 Ah | 20 inches | 3 Years | 120 mins | 1 count | 7 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
