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Ryobi ONE+ RLM18C33B25 (18V, 2.5Ah, 33cm)

Cordless Rotary Lawnmower

From: Ryobi

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.


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Product Features

EasyEdge Technology - This innovative feature draws grass in from the side of the mower directly into the blade path. This means you can cut right up to fences, walls and garden borders without leaving uncut strips. The result is a neater finish with less need for manual trimming afterwards, saving both time and effort during lawn maintenance. 33cm Cutting Width - The 33cm cutting path strikes the perfect balance for small to medium lawns up to 100sqm. This width allows efficient coverage whilst maintaining manoeuvrability around garden obstacles. The rotary cutting action with metal blade ensures clean cuts that promote healthy grass growth and a professional-looking finish. 5-Position Height Adjustment - Single-handed height adjustment ranges from 25mm to 65mm across five positions. This flexibility accommodates different grass types and seasonal cutting requirements. Whether you prefer a close-cut bowling green finish or longer grass for drought resistance, the adjustment system provides precise control over cutting height.
35L Collapsible Catcher - The large capacity grass catcher reduces emptying frequency during mowing sessions. When not in use, it collapses flat for compact storage. The generous 35-litre capacity means fewer interruptions on larger lawns whilst the collapsible design saves valuable shed or garage space. 18V ONE+ Battery System - The included 2.5Ah battery provides consistent power throughout the cutting session with just 1-hour recharge time. The ONE+ system compatibility means this battery works with over 100 other Ryobi tools. This eliminates the need for multiple chargers and batteries across your tool collection. Compact Folding Design - The mower folds down significantly for storage, taking up minimal space in sheds or garages. The multiple-position handle adjusts to suit different user heights for comfortable operation. Combined with the lightweight 13.18kg construction, this makes the mower easy to manoeuvre and store after use.

FAQs

How long does the 2.5Ah battery last during mowing?

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.

What does the EasyEdge feature actually do?

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.

Can I use other Ryobi ONE+ batteries with this mower?

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.

How much space does the mower take up when folded for storage?

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.

Is this mower suitable for uneven or sloped lawns?

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.

How does the cutting height adjustment work?

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.

What maintenance does this cordless mower require?

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.

How does the mulching function work on this model?

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.

Ryobi ONE+ RLM18C33B25 (18V, 2.5Ah, 33cm) Specs

Model NumberRLM18C33B25
Power Source18V Battery
Battery Capacity2.5Ah
Battery Recharge Time1 hour
Cutting StyleRotary
Cutting Width33cm
Cutting Height Range25-65mm
Cutting Height Positions5
Grass Collection Capacity35 litres
Grass Catcher TypeCollapsible
Weight13.18kg
Handle TypeMultiple-position adjustable
Construction MaterialMetal
Blade MaterialMetal
Operation ModeManual push
Suitable Lawn SizeUp to 100sqm
Mulching FunctionYes
Storage DesignCompact folding
Safety FeaturesSafety switch
Charger IncludedYes
Battery SystemONE+ compatible
EmissionsZero emissions
Noise LevelQuieter than petrol mowers
Maintenance RequiredMinimal
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