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Key differences: 40V HP Brushless 20 in Self-Propelled Lawn Mower Kit has more weight, a wider cutting deck and a longer warranty. 18V ONE+ HP Brushless 16 in Push Mower has less weight, a narrower cutting deck and a shorter warranty.
Objective comparison of stated specs — not a recommendation.
How to read the labels
- larger / more / wider / faster — this mower has the higher value for that spec.
- smaller / less / lighter / slower — this mower has the lower value.
- Labels are directional only; whether more is desirable depends on your needs.
- Note: a lower deck-gauge number means thicker steel, so for Deck Gauge a smaller number is the more durable deck.
| Spec | 40V HP Brushless 20 in Self-Propelled Lawn Mower Kit Ryobi · Push / Walk-Behind |
18V ONE+ HP Brushless 16 in Push Mower Ryobi · Push / Walk-Behind |
|---|---|---|
| Engine | ||
| Power Source | battery | battery |
| Fuel Type | Battery / Electric | Battery / Electric |
| Electrical | ||
| Voltage | 40 V | — |
| Deck | ||
| Cutting Width | 20 in (508 mm) wider | 16 in (406 mm) narrower |
| Min Cut Height | 1.5 in (38 mm) | 1.5 in (38 mm) |
| Max Cut Height | 4 in (102 mm) | 4 in (102 mm) |
| Discharge | Mulching, Bagging and Side Discharge | Mulching and Bagging |
| Drive | ||
| Drive Type | Self-Propelled | Push |
| Dimensions | ||
| Weight | 43 lbs (19.4 kg) heavier | 34 lbs (15.6 kg) lighter |
| General | ||
| Warranty | 5 yr longer warranty | 3 yr shorter warranty |
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.