
Mower Comparisons: Head-to-Head, Math Included
Greenworks vs Ryobi Lawn Mowers
Greenworks vs Ryobi mowers: 80V single-pack energy (640 Wh) against 40V dual-pack value (480 Wh), warranty terms, and a yard-size verdict.

Mower comparisons with the math shown: EGO vs Ryobi, Greenworks vs Ryobi, and the 40V vs 80V watt-hour truth. Head-to-head tables, no hype.
Most mower comparisons online are a paragraph of brand praise followed by a “buy this one” verdict with no reasoning you can check. These pages work differently: every head-to-head here runs the numbers a manufacturer page won’t — watt-hours per pack, warranty terms read line by line, and a yard-size verdict that tells you which machine actually finishes your lawn.
The through-line across all four pages is the same energy math used everywhere on this site: volts × amp-hours = watt-hours, and watt-hours is what predicts whether a mower finishes your yard. Voltage tells you how hard a platform can push; watt-hours tells you how long it can push. Once you can convert any pack to watt-hours, brand comparisons stop being about loyalty and start being about arithmetic.
| Page | The question it answers | The short version |
|---|---|---|
| EGO vs Greenworks | 56V vs 80V flagships | EGO wins ecosystem and tool warranty; Greenworks wins energy per dollar and battery warranty |
| EGO vs Ryobi | What the premium buys | EGO’s 5-year tool warranty and cut refinement vs Ryobi’s two-batteries-in-the-box value |
| Greenworks vs Ryobi | 80V single pack vs 40V dual pack | 640 Wh in one pack vs 480 Wh in two — different energy, different charging life |
| 40V vs 80V | The voltage question, settled | Voltage is power delivery, watt-hours are runtime — with the truth table across real packs |
Three inputs, in order. First, current manufacturer specifications — deck size, included batteries, listed runtime, warranty terms — pulled from product pages at publication. Second, the arithmetic those specs imply: watt-hours per pack, watt-hours per cut for common yard sizes, and the runtime penalty a self-propelled drive adds (an estimate we label as one, because no manufacturer publishes consumption-per-mode figures). Third, the warranty terms read the way a claims department would — which part is covered, for how long, and which part actually fails.
What you won’t find: dollar prices (they change weekly and belong on the retailer page), star ratings copied from listings, or claims that anyone here pushed these mowers around a test lawn. The how-we-rate page explains the method in full.
If you’re choosing between two brands, pick the page that matches the pair you’re deciding between. If you’re still deciding which voltage class fits your yard at all, start with 40V vs 80V — it’s the framework every other comparison builds on. And if you already own batteries on one platform, that brand’s page is the honest starting point, because the battery you already own usually matters more than any spec delta.
You’re deciding between two specific brands or voltage platforms and want the math, not a slogan
You haven’t picked a yard-size class yet — the yard-size hub is the better first stop
You want one recommendation per yard size — see best cordless lawn mowers

Mower Comparisons: Head-to-Head, Math Included
Greenworks vs Ryobi mowers: 80V single-pack energy (640 Wh) against 40V dual-pack value (480 Wh), warranty terms, and a yard-size verdict.

Mower Comparisons: Head-to-Head, Math Included
EGO vs Ryobi mowers: what the 5-year tool warranty and cut refinement actually buy you over Ryobi's two-battery 40V kit — with the math shown.

Mower Comparisons: Head-to-Head, Math Included
EGO 56V vs Greenworks 80V: spec-table head-to-head of the current mower flagships, watt-hour runtime math, the warranty delta, and a clear yard-size verdict.

Mower Comparisons: Head-to-Head, Math Included
40V vs 80V mowers: voltage is power delivery, watt-hours are runtime. The Wh truth table across real packs — EGO 56V, Greenworks 80V, Ryobi 40V.