The Ryobi ONE+ RLM18C33B25 lawnmower delivers cordless freedom for lawns up to 100sqm. This 18V rotary mower features a 33cm cutting path with metal construction for lasting performance.
What makes this mower special? The EasyEdge feature draws grass from the side into the blade path, allowing precise cutting right up to fences and walls. This eliminates the need for additional trimming in most cases.
Practical features include 5-position height adjustment from 25-65mm, a 35L collapsible grass catcher and compact folding design. The multiple-position handle adjusts for comfortable operation whilst the 2.5Ah battery provides consistent power with 1-hour recharge time.
The 2.5Ah battery typically provides 20-30 minutes of continuous mowing time, depending on grass conditions and cutting height. For lawns up to 100sqm, this is usually sufficient for a complete cut. Thicker or longer grass may reduce runtime slightly. The battery recharges fully in just 1 hour, so you can complete larger lawns with a brief charging break if needed.
EasyEdge technology draws grass from the side of the mower into the blade cutting path. This allows you to mow right up against fences, walls and garden borders without leaving uncut strips. The feature works by creating airflow that pulls grass towards the blade, eliminating the need for separate trimming in most areas. This saves significant time and creates a neater overall finish.
Yes, all Ryobi ONE+ batteries are compatible with this mower regardless of capacity. You can use 1.5Ah, 2.5Ah, 4Ah, 5Ah, or 6Ah batteries. Higher capacity batteries will provide longer runtime - a 5Ah battery could potentially double your mowing time compared to the included 2.5Ah unit. All ONE+ chargers work with any ONE+ battery as well.
When folded, the mower reduces to approximately 60cm in length and 40cm in width. The handle folds down completely and the grass catcher collapses flat. This compact design allows storage in small sheds, garages, or even large cupboards. The folding mechanism is quick and tool-free, making it practical for regular storage after each use.
The mower works well on gentle slopes and slightly uneven terrain typical of most domestic lawns. The 33cm cutting width and lightweight design provide good manoeuvrability around bumps and dips. However, it's not designed for steep slopes or very rough ground. The multiple cutting height positions help accommodate minor level variations whilst maintaining an even cut.
The cutting height adjusts using a single lever that can be operated with one hand. Five positions are available, ranging from 25mm for a close cut up to 65mm for longer grass. The adjustment affects all four wheels simultaneously, ensuring an even cutting height across the full width. The lever locks securely in each position to prevent accidental changes during mowing.
Maintenance requirements are minimal compared to petrol mowers. After each use, clean grass clippings from the deck and blade area. Check the blade periodically for sharpness and damage - it can be sharpened or replaced when needed. Keep the battery charged and store in a dry location. There's no oil to change, spark plugs to replace, or fuel system to maintain like petrol alternatives.
The mower includes mulching capability, which finely chops grass clippings and redistributes them back onto the lawn. This returns nutrients to the soil and reduces the need for fertiliser. To use mulching mode, remove the grass catcher and ensure the mulching plug is fitted. The feature works best when cutting no more than one-third of the grass height at a time.
| Model Number | RLM18C33B25 |
| Power Source | 18V Battery |
| Battery Capacity | 2.5Ah |
| Battery Recharge Time | 1 hour |
| Cutting Style | Rotary |
| Cutting Width | 33cm |
| Cutting Height Range | 25-65mm |
| Cutting Height Positions | 5 |
| Grass Collection Capacity | 35 litres |
| Grass Catcher Type | Collapsible |
| Weight | 13.18kg |
| Handle Type | Multiple-position adjustable |
| Construction Material | Metal |
| Blade Material | Metal |
| Operation Mode | Manual push |
| Suitable Lawn Size | Up to 100sqm |
| Mulching Function | Yes |
| Storage Design | Compact folding |
| Safety Features | Safety switch |
| Charger Included | Yes |
| Battery System | ONE+ compatible |
| Emissions | Zero emissions |
| Noise Level | Quieter than petrol mowers |
| Maintenance Required | Minimal |