Greenworks 40V 21" Brushless Cordless (Self-Propelled) Lawn Mower (75+ Compatible Tools), 5.0Ah Battery and Charger Included
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MEDIOCRE
42
Winnowl Index
Winnowl Verdict
The Greenworks 40V 21" Brushless Cordless (Self-Propelled) Lawn Mower just cleared our audit with a DEFICIENT (48) Winnowl Index—a score that unfortunately reflects more "brand" than "benefit." This is a Mediocre Performance and Mediocre Value product from a brand with Strong Brand Strength. With the Greenworks 40V 21" Brushless Cordless (Self-Propelled) Lawn Mower (75+ Compatible Tools), 5.0Ah Battery and Charger Included, the specs show that you will likely be able to mow a typical front and back yard on one charge without having to stop to find a charger due to Total Run Time of 45 minutes, which sits 15% below the average. We recommend a hard pivot from this Brand Tax product; the 24% higher price tag results in 30% less hardware for your dollar than the class average.
Market Value Index
Weak
$499.99
Overpriced
Fair
High Value
Our audit identifies Mediocre Value, as the utility relative to the $499.99 investment is 30% less than the $658.14 baseline.
Performance Rating
Mediocre
Compared to others in its class, this product's performance is 44% below the average and earns a Mediocre Performance rating. The Cutting Height Adjustment indicates you should be able to dial in the exact height needed for your specific grass type as the weather and seasons change, but you may find that the 45 minutes Total Run Time means that you will likely be able to mow a typical front and back yard on one charge without having to stop to find a charger.
Brand Strength
Strong
Data for Greenworks confirms Strong Brand Strength; while the Average Brand Trust and Average Brand Reliability are top-tier, make sure the Performance and Value meets your needs.
Available At
$499.99
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The Winnowl Lab Report
| Specification | Value | Rating | Vs. Average | Winnowl Insight |
|---|---|---|---|---|
| Usable Energy Capacity | 160 Wh | Mediocre | 60% worse | |
| Battery Voltage | 40 V | Mediocre | 29% worse | Standard residential power. Balanced for consistent performance on well-maintained suburban lawns. |
| Total Capacity | 5 Ah | Mediocre | 48% worse | Standard suburban capacity. Balanced for roughly 45-60 minutes of runtime. |
| Total Run Time | 45 minutes | Average | 22% worse | Standard suburban endurance. Rated for roughly 1/4 acre under normal conditions. |
| Warranty | 3 Years | Mediocre | 22% worse | Standard residential protection. Covers the machine through the initial years of typical seasonal use. |
| Charging Time | 150 mins | Mediocre | 53% worse | Extended recovery time. Slow recharge speed may delay your ability to finish larger jobs. |
| Number of Batteries | 1 count | Average | 41% worse | Standard single-battery kit. Ideal for standard suburban lots that can be finished in one session. |
| Cutting Width | 21 inches | Average | Average | Standard residential deck width. Balanced for efficiency and maneuverability through most garden gates. |
| Single Battery Capacity | 5 Ah | Average | 15% worse | |
| Cutting Height Adjustment | 7 settings | Average | Average | High-precision adjustment rack. Allows for fine-tuning based on grass species and regional moisture levels. |
Ranking Factors
Insights
- Value Rank: #73 out of 75.
- Performance Rank: #74 out of 75.
- Winnowl Quadrant: Budget
Neutral
- A Cutting Width of inches is about average (21.21 inches) but narrower than the widest in class at 26 inches.
- A Cutting Height Adjustment of settings is about average (7.01 settings) but not as many as the class max of 10 settings.
Weaknesses
- The Years warranty is in the bottom 10%, offering minimal long-term protection.
- At V, the voltage is in the bottom 10%, indicating lower power potential than most peers.
- Ah is among the lowest capacities in class, ranking in the bottom 10%.
- The minutes runtime is in the bottom 10%, significantly trailing the class leaders.
- The mins charge time is in the slowest 10% for this class.
- 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 21" Brushless Cordless (Self-Propelled) Lawn Mower |
MEDIOCRE
42
|
Weak | Mediocre | Strong | $499.99 | 160 Wh | 45 minutes | 40 V | 5 Ah | 21 inches | 3 Years | 150 mins | 1 count | 7 settings | 5 Ah |
| Kobalt 80-Volt 21-in Self-propelled Battery Lawn Mower |
ELITE
94
|
Exceptional | Strong | Exceptional | $599.00 | 576 Wh | 75 minutes | 80 V | 9 Ah | 21 inches | 5 Years | 60 mins | 2 count | 7 settings | 5 Ah |
| Greenworks 82V 25-Inch Battery Powered Self-Propelled Lawn Mower |
ELITE
86
|
Fair | Strong | Strong | $979.97 | 787.20 Wh | 60 minutes | 82 V | 12 Ah | 25 inches | 4 Years | 30 mins | 3 count | 7 settings | 4 Ah |
| LiTHELi 18-Inch Brushless Self-Propelled Mower |
MEDIOCRE
59
|
Exceptional | Mediocre | Mediocre | $276.59 | 256 Wh | 50 minutes | 40 V | 8 Ah | 18 inches | 5 Years | 120 mins | 2 count | 6 settings | 4 Ah |
Rankings
