RB 122 Battery Powered Push Lawn Mower (9-Inch Mini, 40V, Brushless, One-Hand Steering)
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DEFICIENT
47
Winnowl Index
Winnowl Verdict
The RB 122 Battery Powered Push Lawn Mower lands a DEFICIENT (47) Winnowl Index, but even with solid specs, its inability to justify the price tag makes it a difficult recommendation from a value perspective. While RB offers Average Brand Strength and Average Performance, the Mediocre Value at $169.99 indicates a massive price premium. The 40 V Battery Voltage indicates you should find the power sufficient for weekly cuts, maintaining consistent blade speed through most standard grass types, yet the price remains 35% higher than the class average for similar specs. Unless you have a specific reason to stick with this Value Laggard, we suggest looking elsewhere; paying a 35% premium while receiving 13% less hardware density is simply a poor return on investment for most buyers.
Market Value Index
Mediocre
$169.99
Overpriced
Fair
High Value
The Mediocre Value rating is driven by a $169.99 cost that results in 13% lower hardware efficiency than the $262.51 class mean.
Performance Rating
Average
The Average Performance comes in 44% below the average, led by a Battery Voltage of 40 V where you should find the power sufficient for weekly cuts, maintaining consistent blade speed through most standard grass types; however, meeting the minimum requirements because of the 2 Ah Battery Capacity.
Brand Strength
Average
Data for RB confirms Average Brand Strength; that entry cost essentially buys you Average Brand Reliability and Mediocre Brand Trust.
Available At
$169.99
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The Winnowl Lab Report
| Specification | Value | Rating | Vs. Average | Winnowl Insight |
|---|---|---|---|---|
| Battery Capacity | 2 Ah | Weak | 52% worse | |
| Cutting Width | 9 inches | Weak | 46% worse | |
| Cutting Height Adjustment | 3 settings | Weak | 47% worse | Coarse adjustment range. Limited settings can result in "scalping" the lawn or leaving it too long to look tidy. |
| 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. |
| 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. |
Ranking Factors
Insights
- Value Rank: #83 out of 45.
- Performance Rank: #88 out of 45.
- Winnowl Quadrant: Budget
Neutral
- A Battery Voltage of V is about average (39.08 V) but below the highest in class at 80 V.
Weaknesses
- Lowest Battery Capacity in its class at 2 Ah, well below the class high at 6 Ah.
- Narrowest Cutting Width in its class at 9 inches, well below the widest in class at 21 inches.
- Least Cutting Height Adjustment in its class at 3 settings, well below the most in its class at10 settings.
- At only battery, this is in the bottom 10% for included power components.
Comparison
| Name | Winnowl Index | Value | Performance | Brand | Price | Total Run Time | Battery Voltage | Battery Capacity | Cutting Width | Warranty | Charging Time | Number of Batteries | Cutting Height Adjustment |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RB 122 Battery Powered Push Lawn Mower |
DEFICIENT
47
|
Mediocre | Average | Average | $169.99 | — | 40 V | 2 Ah | 9 inches | — | — | 1 count | 3 settings |
| Kobalt Gen4 40-volt, 20-in Push Lawn Mower |
STRONG
86
|
Fair | Strong | Exceptional | $0.00 | 60 minutes | 40 V | 6 Ah | 20 inches | 5 Years | 180 mins | 1 count | 6 settings |
| PowerSmart 80V MAX 21in. Cordless Push Lawn Mower |
STRONG
80
|
Mediocre | Strong | Average | $399.99 | 60 minutes | 80 V | 6 Ah | 21 inches | 4 Years | 75 mins | 1 count | 7 settings |
| LiTHELi Electric Lawn Mower |
AVERAGE
71
|
Exceptional | Average | Average | $119.99 | 30 minutes | 40 V | 4 Ah | 17 inches | 3 Years | 120 mins | 2 count | 6 settings |
Rankings
