Mountfield SP185 Li Kit 48V Cordless Lawn Mower

Mountfield SP185 Li Kit: self-propelled cordless mowing for medium lawns

The Mountfield SP185 Li Kit brings battery power to the familiar format of a substantial, self-propelled Mountfield mower. Its 46cm cutting width covers more grass with each pass, while the rear-wheel drive moves the mower forward at approximately 3.7km/h so that the operator principally needs to guide and steer it.

A 1.3kW brushless motor powers both the cutting system and self-propelled drive. The mower is supplied as a complete kit with one STIGA ePower E 450 48V 5Ah battery and a compatible single charger.

Browse all Mountfield cordless lawn mowers, view the wider Mountfield lawn mower range, or compare models across our complete cordless lawn mower collection.

Key features and benefits

46cm steel cutting deck

The 46cm cutting width is well suited to medium-sized family lawns where a narrow push mower would require too many passes. The steel deck provides the solid construction many customers expect from a traditional Mountfield mower.

Self-propelled rear-wheel drive

The mower drives its rear wheels at a fixed forward speed of approximately 3.7km/h. This reduces the physical effort required to push a 25kg mower and is particularly useful on larger lawns and suitable inclines. Always follow the slope and operating guidance in the Mountfield instruction manual.

Central cutting-height adjustment

A single central lever provides six cutting-height positions between 22mm and 65mm. This allows you to leave the lawn longer during difficult spring or autumn conditions and select a shorter finish during regular summer mowing.

60-litre hybrid grass collector

The large 60-litre collector reduces the number of stops needed to empty clippings. Its rigid top helps it retain its shape, while the textile section supports airflow. A bag-full indicator shows when the collector needs to be emptied.

Collection or rear discharge

Use the collector for a neat cut-and-collect finish. For longer grass where collection would fill the bag too quickly, the mower can instead discharge clippings behind the deck.

This model does not provide a mulching function and does not have a rear roller. Customers who want a pronounced striped finish should consider a Mountfield Princess or Empress roller mower.

Anti-scalp comb

An integrated anti-scalp comb helps the deck follow uneven sections of lawn and supports a more consistent finish where the ground is not completely level.

Adjustable and folding handle

The ergonomic handle can be adjusted to suit the operator and folded to reduce the space needed for storage. A front carrying handle helps when repositioning the mower or lifting it over a step.

Who is the Mountfield SP185 Li Kit best suited to?

Consider the SP185 Li Kit when you have:

• A regularly maintained lawn of up to approximately 550m²
• A medium-sized lawn where a 46cm cutting width will reduce mowing time
• Ground where self-propelled assistance is preferable to a push-only mower
• A preference for cordless operation over petrol or a mains cable
• A need for a durable steel deck and large grass collector
• No requirement for mulching or a rear roller

The manufacturer’s 550m² recommendation is a guide rather than a guaranteed result for every garden. Battery coverage varies with grass height, moisture, density, terrain, cutting height, collection load, battery condition and mowing technique.

Consider a different mower when:

• Your lawn is much smaller and a lighter, narrower mower would be easier to manoeuvre
• You want a rear roller to produce a more defined striped finish
• You require a mulching cutting mode
• Your grass is frequently heavily overgrown, very wet or exceptionally dense
• You need uninterrupted operation beyond the available battery capacity

48V STIGA ePower battery and charger

The kit includes one STIGA ePower E 450 lithium-ion battery with a 48V nominal voltage, 5Ah capacity and 216Wh nominal energy. The mower also has space to carry a second compatible battery, allowing a charged spare to be kept with the machine and changed manually when required.

An additional STIGA E 450 48V 5Ah battery can be useful where the lawn, grass conditions or cutting method require more capacity than one charge provides.

The battery belongs to the STIGA 500 Series 48V battery platform. Check the battery requirement of every machine before assuming compatibility, because individual products may require a particular battery capacity or number of batteries.

Store and charge lithium-ion batteries in accordance with the manufacturer’s instructions. Avoid charging a battery immediately after very demanding use if it is still excessively warm, and do not leave it exposed to prolonged frost, moisture or direct heat.

What is included?

• Mountfield SP185 Li cordless lawn mower
• One STIGA ePower E 450 48V 5Ah lithium-ion battery
• One compatible single battery charger with UK plug
• 60-litre hybrid grass collector
• Instruction and safety documentation

Technical specifications

How does the SP185 Li compare with other Mountfield mowers?

For more help comparing deck widths, power sources and mowing features, read our guide to choosing a Mountfield lawn mower.

Why Masseys recommends the Mountfield SP185 Li Kit

Masseys recommends the SP185 Li Kit to customers who like the substantial feel and wide cutting deck of a traditional self-propelled Mountfield mower but want to move away from petrol. The combination of a 46cm steel deck, rear-wheel drive and 60-litre collector makes it particularly suitable for medium-sized lawns where a compact push mower would require more time and physical effort.

We would not automatically recommend it for every cordless-mower customer. At approximately 25kg, it is a substantial machine, so a smaller Electress model may be easier to handle on a compact or highly obstructed lawn. It also has no rear roller or mulching mode, making a Princess or Empress model a better choice where lawn stripes or mulching are priorities.

Its strongest use case is a regularly maintained medium lawn where self-propelled assistance, a durable steel deck and straightforward collection matter more than minimum weight or a striped finish.

Why buy from Masseys?

• Authorised Mountfield dealer with a large garden-machinery display
• Practical advice on mower size, battery capacity and cutting features
• Assembly and product setup available
• On-site workshop for servicing, repairs and aftersales support
• Local delivery available across much of Derbyshire, Staffordshire and Leicestershire
• Online ordering and a physical store in Woodville, Swadlincote

For long-term support, visit our garden-machinery servicing and repairs page.

Frequently asked questions

Is the Mountfield SP185 Li self-propelled?

Yes. It has rear-wheel self-propelled drive with a forward speed of approximately 3.7km/h. The operator guides the mower rather than supplying all of the forward pushing force.

What size lawn is the Mountfield SP185 Li suitable for?

Mountfield recommends the mower for lawns up to 550m². Actual battery coverage depends on grass length, density and moisture, the selected cutting height, terrain, battery condition and whether the mower is collecting or rear discharging.

Does the SP185 Li Kit include a battery and charger?

Yes. The kit includes one STIGA ePower E 450 48V 5Ah battery and one compatible single charger.

Can I use a second battery?

Yes. The mower has storage space for an additional compatible battery. A second charged battery can be carried with the mower and changed manually to extend the available working time.

Does the Mountfield SP185 Li mulch grass?

No. Its cutting methods are collection and rear discharge. Choose a different Mountfield model if mulching is essential.

Does it have a rear roller?

No. The SP185 Li uses four wheels and does not have a rear roller. Consider a Mountfield Princess or Empress Roller Li model if producing visible lawn stripes is a priority.

Is the deck steel or plastic?

The mower has a 46cm steel cutting deck.

How much does the Mountfield SP185 Li weigh?

The mower weighs approximately 25kg. Its self-propelled drive reduces the effort required while mowing, but its overall weight should still be considered when lifting, transporting or moving it over steps.

Is a cordless mower quieter than a petrol mower?

The SP185 Li is quieter than a comparable petrol mower and does not produce petrol-engine exhaust emissions while in use. The blade and drive system will still generate operating noise, so normal consideration and safety precautions remain necessary.

How long is the warranty?

Mountfield currently provides a five-year manufacturer’s warranty for this mower, subject to its applicable terms, conditions and product-registration requirements.