Kobalt 80-Volt 21-in Self-propelled Battery Lawn Mower, (1) 4 Ah and (1) 5 Ah Batteries Included
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ELITE
94
Winnowl Index
Winnowl Verdict
Our evaluation of the Kobalt 80-Volt 21-in Self-propelled Battery Lawn Mower confirms a rare ELITE (94) Winnowl Index—the undisputed mathematical peak of the Battery Powered Self-Propelled Lawn Mowers class. That score is high because Kobalt has Exceptional Brand Strength, giving you the Exceptional Brand Trust you need combined with Strong Performance. When you look at the numbers, the Total Run Time of 75 minutes is above the class average, which suggests you should have plenty of power to handle larger yards or overgrown grass that would typically drain a standard battery. With it's Strong Value and 46% more Performance for your money over other average Battery Powered Self-Propelled Lawn Mowers, this Gold Standard is a strong buy.
Market Value Index
Exceptional
$599.00
Overpriced
Fair
High Value
The value favors you here; a $599.00 buy-in with Strong Value gets you 46% more Performance value than other Battery Powered Self-Propelled Lawn Mowers.
Performance Rating
Strong
The rated Performance is Strong, lead by the Total Run Time at 75 minutes means you should have plenty of power to handle larger yards or overgrown grass that would typically drain a standard battery.
Brand Strength
Exceptional
The Exceptional Brand Strength here tells us that Kobalt prioritizes Exceptional reliability and that Exceptional Brand Trust is a huge factor in why this is a good buy.
Available At
$599.00
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The Winnowl Lab Report
| Specification | Value | Rating | Vs. Average | Winnowl Insight |
|---|---|---|---|---|
| Battery Voltage | 80 V | Strong | 42% better | High-torque power plant. Capable of maintaining high RPMs through dense turf and varying terrain. |
| Usable Energy Capacity | 576 Wh | Strong | 44% better | |
| Total Run Time | 75 minutes | Strong | 31% better | High-endurance rating. Provides a safety buffer for thick grass or larger properties. |
| Warranty | 5 Years | Strong | 29% better | Extended service commitment. Reflects high manufacturer confidence in the motor and battery electronics. |
| Charging Time | 60 mins | Average | 39% better | Standard residential charge rate. Balanced for typical weekly maintenance schedules. |
| Number of Batteries | 2 count | Average | 18% better | Dual-battery loadout. Provides immediate redundancy and extended runtime for larger properties. |
| Cutting Width | 21 inches | Average | Average | Standard residential deck width. Balanced for efficiency and maneuverability through most garden gates. |
| Total Capacity | 9 Ah | Average | 6% worse | Professional-grade power capacity. Designed for maximum torque and massive acreage. |
| 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: #1 out of 75.
- Performance Rank: #5 out of 75.
- Winnowl Quadrant: High Value
Strengths
- Highest Warranty in its class at 5 Years, significantly above the class average of 3.87 Years.
- At mins, the Charging Time is faster than the class average (98.21 mins) but not as fast as some products at (30 mins).
- V provides high-end power delivery, placing it in the top 10% for voltage in this class.
- A minutes runtime puts this in the top 10% for endurance in this category.
Neutral
- A Total Capacity of Ah is about average 9.55 Ah but below the class max of 24 Ah.
- 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.
- battery(s) is about average 1.69count but below the most in class (4 count).
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| EGO Power+ LM2134SP-2 Select Cut 21-Inch Self-Propelled Mower |
ELITE
86
|
Strong | Strong | Strong | $779.00 | 537.60 Wh | 100 minutes | 56 V | 12 Ah | 21 inches | 5 Years | 30 mins | 2 count | 8 settings | 6 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
