Our verdict
The Ryobi mower that finally competes with EGO and Greenworks 60V at the wide-cut end. If you already own Ryobi 36V tools, the platform fit is the real value.
Pros & cons
Pros
- 51cm cut — wide for cordless
- 36V Ryobi MAX platform
- Self-propelled
- Ryobi battery resale is decent
Cons
- Heavier than 18V Ryobi
- Battery costs £150+ to replace
- Self-propel cable wears
Full specs
| Type | Cordless |
|---|---|
| Cut width | 51 cm |
| Engine / Power | Ryobi 36V brushless |
| Weight | 24 kg |
| Deck | Plastic |
| Self-propelled | Yes |
| Rear roller | No |
| Mulching | Yes |
| Cutting heights | 6 positions |
| Bag capacity | 70 L |
| Suited to lawn | Large |
| Noise level | 75 dB |
Buying second-hand
£200–340 used. Confirm 36V battery is genuine Ryobi MAX (counterfeits are common). 5Ah battery healthy runtime is 35–45 minutes. Self-propel drive belt is the wear part — listen for slip under load.
Where to buy the Ryobi RY36LMX51A-150
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Repair-cost reference
UK 2026 ballpark prices for the parts you're most likely to need on this mower. OEM is dealer-genuine; aftermarket is what you'll find on eBay or generic small-engine suppliers. Use these to sense-check any quote and to negotiate on used buys.
| Part / job | OEM | Aftermarket |
|---|---|---|
|
Replacement 51cm blade
Annual sharpening is free; replace when bent or cracked.
|
£24–£32 | £8–£12 |
|
Replacement battery
Wear part — typical 3–5 years to 80% capacity. The biggest single repair cost on any battery mower.
|
£90–£180 | £55–£120 |
Fair-offer calculator
Tell us about a specific used listing for the Ryobi RY36LMX51A-150 you're looking at. We'll compute a fair offer range from our used-market data and the condition signals you provide.
Calculations are guidance, not gospel. Used-market prices vary by region (Scotland is typically 10–15% cheaper than the South-East), season (October cheapest, March most expensive), and seller motivation.
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