Our verdict
The right Ryobi for someone who already owns 5+ ONE+ tools. The battery slots in cleanly and the mower handles small flat lawns. For everyone else, the EGO LM1701E or Bosch EasyRotak offers more cut for similar money.
Pros & cons
Pros
- Runs on Ryobi 18V ONE+ — hundreds of compatible tools
- Single battery design simpler than twin
- Light at 12kg
- Cheap for an 18V cordless
Cons
- Single 18V limits cut width to 33cm
- 30L box fills fast
- Slow on long grass
Full specs
| Type | Cordless |
|---|---|
| Cut width | 33 cm |
| Engine / Power | Ryobi 18V brushless |
| Weight | 12 kg |
| Deck | Plastic |
| Self-propelled | No |
| Rear roller | No |
| Mulching | No |
| Cutting heights | 6 positions |
| Bag capacity | 30 L |
| Suited to lawn | Small |
| Noise level | 75 dB |
Buying second-hand
£60–120 used. Confirm a genuine Ryobi 18V battery is included (counterfeits common). 4Ah pack runs ~25 minutes. ONE+ batteries are the most counterfeited — buy from sellers with original receipts. Mower itself is well-built; battery is the entire risk.
Where to buy the Ryobi OLM1841H
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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 33cm 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 OLM1841H 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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