Best Ryobi Lawn Mowers: ONE+ 18V vs 40V vs 80V Battery Systems Explained
The budget mower that actually works — if you pick the right one
Ryobi is the Home Depot house brand of outdoor power tools, and that sounds like a knock but it isn't. They've figured out something important: most homeowners don't need the best mower ever made. They need a good mower at a reasonable price with batteries that work in their blower and trimmer too. That's Ryobi's entire pitch, and for a lot of yards, it's exactly right.
Understanding Ryobi's Battery Systems
This is where it gets confusing if you're not paying attention. Ryobi has three separate battery platforms for outdoor tools, and they are not interchangeable:
18V ONE+: Ryobi's original cordless platform. Hundreds of tools (drills, saws, lights, etc.) share these batteries. The mower that uses 18V ONE+ batteries exists, but it's underpowered for real mowing — think of it as a novelty for tiny patches of grass, not a real lawn mower.
40V: The main lawn care platform. This is where the real mowers, trimmers, blowers, and chainsaws live. 40V batteries are physically larger, hold more energy, and deliver enough power for sustained mowing. If you're buying a Ryobi mower, this is the system you want.
80V: Ryobi's premium platform for larger properties. More power and runtime than 40V but significantly more expensive. The batteries don't cross-work with 40V tools. Worth it for 1+ acre properties; overkill for smaller yards.
The 40V Lineup (What Most People Should Buy)
40V 20" Push Mower ($250–$300 with battery)
The entry point. A 20-inch deck with a basic push design — no self-propelled, no frills. It comes with a 5.0Ah or 6.0Ah battery and charger. For flat yards under 1/4 acre, it's perfectly adequate. The cut quality is decent, it mulches well, and the runtime (40-50 minutes real-world) covers most small lots.
The trade-off: no self-propelled means you're pushing it. On flat ground, fine. On any slope, tiring. For $50-$100 more, the self-propelled version is almost always worth the upgrade.
40V 21" Self-Propelled ($350–$400 with battery) — Best Pick
This is the Ryobi mower most people should buy. The 21" deck covers ground efficiently, the self-propelled drive handles hills without wearing you out, and it typically comes with a 6.0Ah or 7.5Ah battery that provides 50-70 minutes of real-world runtime.
At $350-$400, it's $200+ cheaper than a comparable EGO and does 90% of the same job. Yes, the EGO has a stronger motor. Yes, the EGO cuts slightly better in thick, wet grass. But for the average lawn with weekly mowing, the Ryobi is more than adequate, and the savings are real.
The brushless motor versions (look for "brushless" in the model name) are worth the small premium — more efficient, longer motor life, and slightly more runtime per charge.
40V CrossCut Self-Propelled ($400–$500)
Ryobi's premium 40V mower. The "CrossCut" system uses two blades instead of one for a finer mulch and cleaner cut. It's a noticeable improvement over the single-blade models, especially if you mulch clippings (which you should — it's free fertilizer).
At $400-$500, it's pushing into EGO territory on price. If you're going to spend this much, make sure you're getting it for the dual-blade system specifically, not just because it's the "nicest Ryobi." If dual-blade cutting doesn't matter to you, save the money and get the standard self-propelled.
The 80V Lineup (For Bigger Yards)
80V 30" Riding Mower ($3,500–$4,000)
Ryobi's battery riding mower. A 30-inch deck (smaller than most gas riders), about 2 hours of runtime on the built-in battery, and zero-maintenance operation. For yards in the 1-2 acre range, it's a genuine gas replacement.
The price is steep compared to a gas riding mower with a larger deck, and the 30" cutting width means more passes. But the zero maintenance, quiet operation, and instant start have converted a lot of homeowners who are tired of dealing with gas engine issues every spring.
80V 42" Zero-Turn ($5,000–$6,000)
For large properties. Competes with EGO's Z6 and gas zero-turns. At this price point, you're making a serious investment — compare carefully with EGO's Z6 (which has more market traction and reviews) and gas alternatives.
Why Ryobi Over EGO?
This is the question everyone asks. Here's the honest comparison:
Price: Ryobi wins. A 40V self-propelled Ryobi is $350-$400. A comparable EGO is $600+. That's not a small difference.
Cutting power: EGO wins. The 56V motor cuts better in thick, wet, or tall grass. For weekly mowing of a normal lawn, you won't notice the difference. For overgrown grass or tough conditions, you will.
Battery ecosystem: Ryobi wins on variety. The 40V platform has more tools available — mower, trimmer, blower, chainsaw, pressure washer, tiller, snow blower, and more. EGO's ecosystem is growing but not as wide.
Build quality: EGO wins. Better deck materials, more refined self-propelled drive, higher-quality components across the board. The EGO will likely outlast the Ryobi by a year or two.
Availability: Ryobi at Home Depot, EGO at Lowe's and online. Both widely available.
The bottom line: If $600+ for a mower is fine, EGO is the better machine. If $350-$400 fits your budget better and you want a good mower (not the best, but good), Ryobi is the smart buy. For the majority of homeowners with normal yards, the Ryobi does the job at a price that makes sense.
Battery Tips for Maximum Runtime
Mow regularly. The single biggest factor in battery life is grass height. Mowing weekly means shorter grass, less resistance, and 30-50% more runtime per charge compared to letting it grow two weeks.
Mow when it's dry. Wet grass clumps, sticks to the deck, and makes the motor work 2x harder. Wait until the dew dries. Your battery and your cut quality will both thank you.
Keep the blade sharp. A dull blade tears grass instead of cutting it, which requires more motor effort and drains the battery faster. Sharpen or replace the blade at least once per season.
Mulch instead of bag. Bagging mode requires the motor to create more suction, which drains the battery faster. Mulching uses less power and returns nutrients to the lawn. Win-win.
Store batteries properly. Don't leave them on the charger 24/7 (it degrades the cells over time). Don't store them in a freezing garage in winter. Room temperature, partially charged (50-80%), is ideal for long-term storage.
The Comparison Table
| Model | Platform | Deck | Type | Price | Best For |
|---|---|---|---|---|---|
| 40V Push | 40V | 20" | Push | $250–$300 | Small flat yards |
| 40V SP | 40V | 21" | Self-Prop | $350–$400 | Most homeowners (top pick) |
| 40V CrossCut | 40V | 21" | Self-Prop | $400–$500 | Premium cut quality |
| 80V Rider | 80V | 30" | Riding | $3,500–$4,000 | 1-2 acre yards |
| 80V Zero-Turn | 80V | 42" | Zero-Turn | $5,000–$6,000 | 2+ acre properties |
Bottom Line
Best value mower: Ryobi 40V 21" self-propelled at $350-$400. Good cut, good runtime, great ecosystem, hard to beat on price.
Budget pick: Ryobi 40V 20" push at $250-$300. Fine for small flat yards where self-propelled isn't needed.
Premium pick: 40V CrossCut self-propelled at $400-$500. Dual blades give noticeably better mulching and cut quality.
Skip: The 18V ONE+ mower. Not enough power for real lawns. Buy it only if your "lawn" is a 10x10 patch of grass.
The real reason to go Ryobi: The 40V battery ecosystem. If your mower, trimmer, and blower all share batteries, you need fewer batteries total and the whole system costs less than buying three separate brands.
Ryobi Voltage Decision: 18V vs 40V vs 80V
This is the question that trips up most Ryobi buyers. The voltage determines everything — runtime, power, and which other tools share your batteries.
| Platform | Best For | Skip If | Ecosystem Size |
|---|---|---|---|
| ONE+ 18V | Tiny yards under 1/8 acre, tight budgets | Any yard where mowing takes more than 20 minutes | 300+ tools share the battery — massive ecosystem |
| 40V | Yards 1/8 to 3/4 acre — the sweet spot for most | You're already invested in 80V tools | 40+ tools including mowers, trimmers, blowers |
| 80V | Large yards 3/4 to 1.5 acres, or thick grass | Small yards where 40V handles it easily | Smaller ecosystem, but the most powerful residential mowers |
Real-World Runtime by Yard Condition
Ryobi marketing: "up to 70 minutes." Your yard:
| Condition | 40V 6.0Ah | 40V 7.5Ah | 80V 10.0Ah |
|---|---|---|---|
| Dry, weekly mow, flat | 38-46 min | 48-58 min | 65-78 min |
| Weekly mow, moderate hills | 30-38 min | 40-48 min | 55-65 min |
| 10 days overgrown | 25-32 min | 35-42 min | 48-58 min |
| Wet grass | 22-28 min | 30-38 min | 42-52 min |
Rule of thumb: take Ryobi's published runtime, multiply by 0.65, and that's your real-world number in normal conditions. On wet or thick grass, multiply by 0.50. Plan accordingly.
Home Depot Ryobi Buyer Tips
Ryobi mowers are exclusive to Home Depot. A few insider tips that save money:
Wait for the spring sale. Every April-May, Home Depot runs "Spring Black Friday" deals. Ryobi mowers typically drop $50-$100, and battery bundle deals appear (mower + trimmer + blower kits). If you can wait until late April, you'll save meaningful money.
Buy the bare tool if you own batteries. Every Ryobi 40V mower is available as a bare tool (no battery included) for $100-$150 less than the kit. If you already own 40V batteries from a trimmer or blower, this is free money.
Don't buy the cheapest 40V mower. The entry-level 40V push mower (~$250) uses a brushed motor. The $300-$350 brushless models are dramatically more efficient — 20-30% more runtime on the same battery, more power in thick grass, and they last longer because brushless motors have no wearing contact points. The $50-$100 upcharge pays for itself in the first season.
Check "special buy" bundles online. Home Depot's website often has exclusive bundles (mower + extra battery, or mower + charger upgrade) that aren't available in-store. Always check online pricing before buying in the aisle.
Not sure if battery is right for you? Our battery vs gas lawn mower comparison covers the real-world tradeoffs. And don't forget to sharpen your blade regularly — it matters more than which mower you buy.