Ryobi 40V HP Brushless 20" Self-Propelled Multi-Blade Mower Kit vs Greenworks 40V 21" Self-Propelled Mower (LM2154S)
Two of the cordless lawn mowers in our best cordless lawn mowers: greenworks & ryobi push and self-propelled comparison, lined up spec by spec. Every figure comes from the manufacturer pages linked below, and the scores use the same published formula as the full ranking.
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Ryobi 40V HP Brushless 20" Self-Propelled Multi-Blade Mower Kit
Best for: Self-propelled 20 in with an 8 Ah battery
Check price at AmazonBest for: Single 5 Ah battery, 1/3 acre
Check price at AmazonSpec-by-spec comparison
Green marks the better published figure. "Not listed" means the manufacturer doesn't publish it.
| Spec | Ryobi 40V HP Brushless 20" Self-Propelled Multi-Blade Mower Kit | Greenworks 40V 21" Self-Propelled Mower (LM2154S) | Weight |
|---|---|---|---|
| Deck widthThe cutting-deck width in the maker's name or spec table. A wider deck cuts more grass per pass. | 20 in | 21 in | 25% |
| Kit battery energyBattery energy in watt-hours, computed as volts x amp-hours of the battery or batteries the maker says come in the kit (for example 40 V x 6 Ah x 2 = 480 Wh). Bigger batteries generally mean more work per charge from the same tool. | 320 Wh | 200 Wh | 20% |
| RuntimeThe maker's runtime claim with the batteries in the kit. Thick or wet grass and self-propel use shorten it. | 50 min | 60 min | 15% |
| Rated lawn sizeThe lawn size the maker says one charge (or the kit's batteries) handles, such as "up to 3/4 acre". | 0.5 acres | 0.33 acres | 15% |
| Cutting-height rangeComputed as the maker's highest cutting height minus its lowest. | 2.5 in | 2.688 in | 10% |
| Self-propelledYes when the mower drives its own wheels. That helps on slopes and with heavy decks. | Yes | Yes | 10% |
| Listed weightThe weight the maker lists. Makers don't always say whether it includes the battery, so treat small gaps as noise. | 56 lb | 67.2 lb | 5% |
| Kit battery | 40 V 8 Ah = 320 Wh (computed) | 40 V 5 Ah = 200 Wh (computed) | info |
| Cutting height | 1.5–4 in | 1⅜–4 1/16 in | info |
| Cutting-height range | 2.5 in (computed: max minus min) | 2.688 in (computed: max minus min) | info |
| Rated lawn size | Up to 1/2 acre (0.5 acres, computed) | Up to 1/3 acre (0.33 acres, computed) | info |
| Height adjustment | 7-position | Not listed | info |
| YardPick score | 4.1/10 | 3.9/10 | 100% |
Where each one comes out ahead
Ryobi 40V HP Brushless 20" Self-Propelled Multi-Blade Mower Kit
Better published figure on: Kit battery energy, Rated lawn size, Listed weight.
What we like
Watch out for
Greenworks 40V 21" Self-Propelled Mower (LM2154S)
Better published figure on: Deck width, Runtime, Cutting-height range.
What we like
Watch out for
Verdict
Ryobi lists 320 vs 200 Wh, 1/2 vs 1/3 acre and 56 vs 67.2 lb; Greenworks lists a 21 vs 20 in deck and 60 vs 50 min.
- Ryobi 40V HP Brushless 20" Self-Propelled Multi-Blade Mower Kit: Ryobi: 40V HP 20" Self-Propelled Multi-Blade Mower Kit
- Greenworks 40V 21" Self-Propelled Mower (LM2154S): Greenworks: 40V 21" Self-Propelled Mower