RB 40V 13-Inch Brushless Cordless Lawn Mower with 4.0Ah Lithium Battery & Fast Charger, 2-in-1 Lightweight Mower for Small Yards, Foldable Handle, 5 Cutting Height Adjustments
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DEFICIENT
40
Winnowl Index
Winnowl Verdict
The RB 40V 13-Inch Brushless Cordless Lawn Mower currently holds a DEFICIENT (44) Winnowl Index, signaling a total lack of Performance for in the Battery Powered Push Lawn Mowers class. This product is outclassed across the board with Mediocre Brand Strength, Mediocre Performance and a Mediocre Value rating. The data shows the RB 40V 13-Inch Brushless Cordless Lawn Mower with 4.0Ah Lithium Battery & Fast Charger, 2-in-1 Lightweight Mower for Small Yards, Foldable Handle, 5 Cutting Height Adjustments has a Total Run Time of 35 minutes, which sits 34% below the 52.85 minutes average meaning you should be able to manage a typical quarter-acre property on a single charge if the grass is dry and maintained. Walk away from this Consistent Lagger; paying $209.99 for a product a where the Performance is 33% below the average is not a good purchase.
Market Value Index
Weak
$209.99
Overpriced
Fair
High Value
The Mediocre Value rating identifies a total loss of efficiency where the $209.99 cost is 27% behind the $262.51 class baseline.
Performance Rating
Mediocre
A Mediocre Performance rating is to due specs like the 35 minutes Total Run Time which is 34% below the class mean, which may mean you should be able to manage a typical quarter-acre property on a single charge if the grass is dry and maintained.
Brand Strength
Mediocre
The Mediocre Brand Strength of RB is because of Mediocre Brand Trust and Average reliability compared to other Battery Powered Push Lawn Mowers.
Available At
$209.99
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The Winnowl Lab Report
| Specification | Value | Rating | Vs. Average | Winnowl Insight |
|---|---|---|---|---|
| Cutting Width | 13 inches | Mediocre | 22% worse | |
| Total Capacity | 4 Ah | Mediocre | 36% worse | |
| Usable Energy Capacity | 128 Wh | Average | 35% worse | |
| Warranty | 2 Years | Mediocre | 32% worse | Standard industry protection. This coverage aligns with the market average and offers a fair level of consumer security. |
| 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. |
| Total Run Time | 35 minutes | Average | 15% worse | Standard duty cycle. This endurance level matches the average residential mowing session for most homeowners. |
| Cutting Height Adjustment | 5 settings | Average | 12% worse | 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: #76 out of 89.
- Performance Rank: #77 out of 89.
- Winnowl Quadrant: Budget
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
- inches is in the bottom 10% for cutting width in this class.
- The Years warranty is in the bottom 10%, offering minimal long-term protection.
- 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RB 40V 13-Inch Brushless Cordless Lawn Mower |
DEFICIENT
40
|
Weak | Mediocre | Mediocre | $209.99 | 128 Wh | 35 minutes | 40 V | 4 Ah | 13 inches | 2 Years | 120 mins | 1 count | 5 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
