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A neutral, side-by-side reference of each model's stated specifications. MowerFacts does not rank one model above another — read the values and decide what fits your needs.
Best suited for
What each model is built for, from its duty class and key specs. This is a neutral reference — MowerFacts does not rank one model above another.
- Ryobi 40V HP Brushless 21 in Self-Propelled Mower — residential: typical home lawns; 21-inch deck; battery (no fuel or engine maintenance)
- Ryobi 18V ONE+ 13 in Push Mower Kit — residential: typical home lawns; 13-inch deck; battery (no fuel or engine maintenance)
| Spec | 40V HP Brushless 21 in Self-Propelled Mower Ryobi · Push / Walk-Behind |
18V ONE+ 13 in Push Mower Kit Ryobi · Push / Walk-Behind |
|---|---|---|
| Engine | ||
| Power Source | battery | battery |
| Fuel Type | Battery / Electric | Battery / Electric |
| Electrical | ||
| Voltage | 40 V | 18 V |
| Deck | ||
| Cutting Width | 21 in (533 mm) | 13 in (330 mm) |
| Min Cut Height | 1 in (25 mm) | 1.5 in (38 mm) |
| Max Cut Height | 4 in (102 mm) | 4 in (102 mm) |
| Discharge | Mulching, Bagging, Side Discharge | Mulching & Bagging |
| Drive | ||
| Drive Type | Self-Propelled | Push |
| Dimensions | ||
| Weight | 75 lbs (33.9 kg) | 29 lbs (12.9 kg) |
| General | ||
| Bagger Capacity | 2 bu (70.5 L) | — |
| Warranty | 5 yr | 3 yr |
40V HP Brushless 21 in Self-Propelled Mower: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — ryobitools.com.
18V ONE+ 13 in Push Mower Kit: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — ryobitools.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.