The Kärcher LMO 5-18 Dual battery lawnmower impresses with the combination of two batteries for a powerful 36-watt motor , which can handle even the most demanding tasks. It is a brushless motor , which has no moving parts, which means that wear is much slower. An important quality of the motor is also its impressive energy efficiency.

The mower allows for fast mowing, as the cutting width is as much as 41 cm . The cut grass can then be used as fertilizer. This is thanks to the mulching function.

Karcher LMO 5-18 Dual battery lawn mower
With a cutting width of 41 cm and twice the power – the powerful 36-volt motor of the LMO 5-18 Dual Battery cordless lawn mower is powered by two 18-volt batteries.

With two 18-volt batteries and a powerful 36-volt brushless motor, the LMO 5-18 Dual Battery is the perfect solution for mowing large lawns of up to 550 m2. The lightweight and agile battery lawnmower can be pushed easily over uneven terrain and around obstacles.

The working width is 41 cm, and the cutting height can be adjusted to one of six levels, from 25 to 70 mm. When mowing, the intelligent iPower engine control system automatically adjusts the speed to the condition of the grass. Along the edges or edging, the lawn combs align the grass blades, ensuring that no blade misses.

The 2-in-1 mowing system allows the grass clippings to be evenly distributed over the lawn as a natural fertilizer during mulching or collected in the large 45-liter grass collector - for continuous mowing for longer. The guide handle is telescopic and offers a very comfortable, ergonomic working position. The foldable frame takes up very little space when stored. It has a large, sturdy handle for carrying on stairs and steps. The LMO 5-18 dual battery is compatible with the 18 V Kärcher Battery Power battery platform.

Features and benefits

18 V + 18 V = 36 V of power:
• Powerful 36 V motor powered by two 18 V li-ion batteries.

Powerful brushless motor:
• High performance and longer product life

iPower:
• Extra performance and optimized battery runtime. Thanks to intelligent motor control, the speed is automatically adjusted to the condition of the grass while mowing.

2-in-1 mowing system:
• The cut grass is efficiently collected in the grass catcher during mowing.
• Mulching function: With the mulching wedge, the cut grass is distributed over the lawn as a natural fertilizer.
• Sharp steel blade for precise mowing results without tearing the grass blades.

Efficient filling of the grass catcher:
• Thanks to the optimized airflow, the grass catcher is filled to 95%. This means fewer blockages during work.
• The flap on the grass catcher closes when the catcher is completely full and needs to be emptied.

Easy cutting height adjustment:
• With a single movement, you can easily adjust the cutting height to one of six levels, ranging from 25 to 70 mm.

Mowing all the way to the edge of the lawn:
• The grass rake automatically captures even the grass right at the edge of the lawn.

Space-saving design:
• The textile collection bag can be folded to a very small size and stored on the lawnmower in a space-saving manner.
• Foldable guide handle allows for storage in a small space.

Built-in carrying handle:
• Built-in carrying handle allows for easy transport.

Ergonomic handling concept:
• Quick release couplings for easy locking. Variable angle for upright posture while working.
• Foam handle provides a secure hold and a comfortable feel.
• Full-length control stick on the guide handle allows for easy operation.

Technical data:
• Motor voltage (V): 36
• Device: battery-powered
• Battery platform: Battery platform 18 V
• Cutting width (cm): 41
• Cutting height (cm): 25 - 70
• Cutting height adjustment: 6-fold
• Grass catcher capacity (l): 45
• Drive: Brushless motor
• Number of revolutions (rpm): 3500
• Voltage (V): 18
• Number of batteries required (Piece(s)): 2
• Capacity with full battery * (m2): max. 275 (2.5 Ah) / max. 550 (5.0 Ah)
• Operating time with full battery (min): max. 20 (2.5 Ah) / max. 40 (5.0 Ah)
• Color: Yellow
• Weight without accessories (Kg): 14
• Dimensions (L x W x H) (mm): 1245 x 440 x 1031

Scope of delivery:
• Option: Batteries and charger not included
• Mulching kit
• Grass collection basket

Equipment:
• Blade
• Height-adjustable guide handle
• Built-in carrying handle
• Charge level indicator

Same summary

The Kärcher LMO 5-18 Dual battery lawnmower is suitable for users who need a maneuverable, medium-sized lawnmower for mowing domestic or urban lawns. The cutting width allows for relatively quick work on medium and larger lawns, and the larger basket capacity means fewer interruptions due to emptying. Since the battery is not included, the lawnmower is best suited for those who already use the Kärcher battery system or are looking for an additional machine within the same platform.

When using it for the first time without its own compatible battery, this may represent an additional cost, which is worth considering. Due to the good balance between cutting width and basket volume, the model is less suitable only for very small and busy gardens.

Recommendation source: Enaa guides and team experiences.

User view

Typical users of this battery lawn mower are homeowners with a garden or landscaped lawn who appreciate its lightness, lower noise level and ease of use without petrol or cables. In practice, this model well covers the needs for quick maintenance of medium-sized lawns, where the capacity of the basket reduces the need for frequent emptying, and the ergonomics make it easier to maneuver. The mobility of the lawn mower is evident both for occasional and regular users who already have a battery tool at home.

Users often choose Kärcher products because they trust the quality and compatibility of the batteries within their garden system, which simplifies work around the house in the long run.

Why buy at Enaa

When you buy from Enaa.com, you can expect clearly displayed technical data and easy comparison between similar models, allowing you to make an informed choice based on your usage. In addition, our team is available for expert advice if you need help choosing the right cordless lawn mower.

Answers to frequently asked questions

Can I use any Kärcher battery with this lawnmower model?

The LMO 5-18 Dual model supports the Kärcher 18 V system, so it is compatible with Kärcher 18 V batteries, although they are not included in the basic package.

How large an area is this mower best suited for?

The mower works well on medium to large areas, where the cutting width and larger grass catcher capacity come into play; it may not be the most sensible choice for very small or busy gardens.

Can the lawnmower also be used for mulching?

The mulching option depends on optional equipment and settings; check the availability of this feature in the instructions or with the manufacturer.

How difficult is it to store this mower?

Thanks to the foldable handle and balanced dimensions, the mower is easy to store even in small storage rooms or garages.

What maintenance can I do to extend the life of my lawn mower?

It is recommended to regularly clean the basket and blades, occasionally check the battery contacts and store the lawnmower in a dry place.

Description updated: April 2026