Keeping a lawn looking good can take a surprising amount of time.

During the growing season, mowing once or twice a week can quickly turn into hours spent cutting grass, emptying collection boxes and tidying up – particularly if you have a larger garden.

A robotic lawn mower offers a different approach.

Rather than waiting for the grass to grow long and then cutting it all at once, a robot mower can mow regularly throughout the week, maintaining a consistent finish while you get on with something else.

And modern robot lawn mowers have moved well beyond the traditional machines that required a physical boundary wire buried around the edge of the lawn.

The latest FJDynamics robotic lawn mowers use technologies including RTK positioning, cameras and LiDAR to navigate gardens using virtual boundaries.

So, which robot mower is right for your garden?

In this guide we'll look at three options – the FJD FV2000, FJD FR4000 and FJD Blix – and explain which type of garden each mower is best suited to.

Why Buy a Robot Lawn Mower?

The biggest reason is simple: time.

A lawn still needs cutting whether you'd rather spend your Saturday mowing it or not.

A robot mower can take care of routine mowing automatically, helping maintain the lawn without requiring you to manually mow it every few days.

Regular mowing also means only small amounts of grass are removed at a time. These fine clippings can be left on the lawn rather than collected after every cut.

For homeowners with medium and large gardens in particular, that can turn lawn mowing from a regular weekend job into something that happens largely in the background.

Do Modern Robot Lawn Mowers Need Boundary Wires?

Not necessarily.

Traditional robotic lawn mowers often rely on a physical perimeter wire installed around the lawn. The mower detects the wire and uses it to determine where it can and cannot travel.

Modern navigation technology allows this boundary to be created virtually instead.

All three FJD models covered here use virtual boundaries, meaning there's no traditional perimeter wire to bury around the edge of your lawn.

That has several advantages.

There's no wire running around the garden to accidentally damage, changes to mowing areas can be made without physically moving a cable, and installation can be considerably simpler.

The way the mower determines its position, however, differs between the models.

That's one of the biggest considerations when choosing between the FV2000, FR4000 and Blix.

FJD FV2000 – A Great Choice for Gardens Up to 2,000m²

For many domestic gardens, the FJD FV2000 will provide more than enough mowing capacity.

FJD recommends the FV2000 for mowing areas up to 2,000m² – approximately half an acre.

It uses virtual boundaries rather than a traditional perimeter wire and combines precise positioning with intelligent navigation to mow the lawn in planned patterns.

The cutting width is 260mm, with an adjustable cutting height of 20–60mm.

It can operate for around 120 minutes per charge, with a charging time of approximately 60 minutes.

The FV2000 can also tackle significant changes in terrain, with a maximum climbing capability of 33° / 65%. Actual working suitability will depend on the individual site and mowing direction.

The FV2000 can also manage multiple separate mowing areas. Travel routes can be set between different lawn zones, allowing the mower to drive between them rather than requiring you to physically move the mower from one lawn to another.

This is particularly useful for homes with front and rear lawns, side gardens or grass areas separated by paths or other non-mowing surfaces.

Who Is the FV2000 Best For?

The FV2000 makes sense for homeowners who:

• Have a total mowing area up to approximately 2,000m²

• Want to maintain one or multiple lawn areas

• Want the mower to travel automatically between configured mowing zones

• Don't want a traditional boundary wire

• Want app-controlled mowing

• Have a medium or larger domestic garden

• Want a mower that automatically maintains the lawn

For many medium-to-large domestic properties, the FV2000 provides an excellent entry into intelligent robotic mowing.

FJD FR4000 – For Larger Gardens and Grounds

Step up to the FJD FR4000 and the recommended mowing area increases to 4,000m² – approximately one acre.

That makes it particularly interesting for larger homes, country properties and substantial lawns where mowing manually can take a significant amount of time.

The FR4000 uses RTK positioning combined with a smart vision system.

Its RGB and stereo camera system helps detect obstacles and recognise boundaries while also assisting navigation where the RTK signal becomes weaker.

Like the FV2000, there's no traditional boundary wire to install.

The FR4000 has a 260mm cutting width and can operate for approximately 180 minutes per charge, thanks to its larger 190Wh battery.

It also offers the same maximum 33° / 65% climbing capability.

Importantly, the FR4000 isn't restricted to one large lawn. It can be configured for multiple mowing areas and travel automatically between them using defined transit routes.

So a property with a large rear lawn, front lawn and additional grass areas doesn't necessarily require the mower to be manually carried between each zone.

Who Is the FR4000 Best For?

Consider the FR4000 if you:

• Have a large lawn or multiple lawn areas

• Need to cover up to approximately 4,000m²

• Want the mower to travel between configured mowing zones

• Want RTK precision combined with vision

• Have a large country garden or estate

• Need longer operating time between charges

• Want virtual rather than physical boundaries

For larger domestic properties and grounds, the FR4000 provides considerably more capacity than the FV2000.

FJD Blix – Designed for the Modern Residential Garden

Then there's the FJD Blix.

Blix takes a different approach to the FV2000 and FR4000 and is particularly interesting for residential gardens.

Instead of relying on an RTK reference station, Blix combines LiDAR with RGB vision to understand and navigate its surroundings.

It requires no wires and no RTK station.

You position the charging dock, map the lawn using the app and the mower can then use its sensors to navigate the garden.

Its LiDAR system creates a 3D understanding of the surroundings, while the vision system helps it recognise where it should and shouldn't mow.

That includes identifying lawn areas and avoiding features such as:

• Driveways

• Flower beds

• Bushes

• Play equipment

• Non-lawn areas

• Other obstacles

This makes Blix particularly interesting for more complicated residential gardens where trees, buildings, walls and other features can make satellite-based positioning more challenging.

What Happens if Your Garden Has Trees?

This is an important consideration when choosing a robotic mower.

Satellite positioning systems work extremely well when they have a clear view of the sky, but gardens aren't always open fields.

You may have mature trees, high walls, buildings, narrow passages or sheltered sections.

Blix is designed specifically to deal with this kind of environment.

Because it navigates using LiDAR and RGB vision sensor fusion, it doesn't depend on an RTK station to understand where it is.

That makes Blix an attractive option for complicated domestic gardens.

Blix Can Cover Up to 4,000m²

Despite being aimed squarely at residential lawn care, Blix isn't limited to small gardens.

Its stated maximum 24-hour coverage is 4,000m² – approximately one acre.

It uses two 95Wh batteries and can operate for up to three hours per charge.

Charging takes approximately 1 hour 50 minutes from 10–100%, or around 1 hour 30 minutes from 20–100%.

Like the other two machines, Blix has a 260mm cutting width and a maximum climbing capability of 33° / 65%.

The standard cutting-height range is 20–60mm, with a high-cut version offering 40–80mm.

What Happens When It Rains?

All 3 mowers include automatic rain detection.

When rain is detected, the mower can stop its mowing task and return to charge.

The mowers themselves are rated IPX5, while their charging station is rated IP65.

Can a Robot Lawn Mower Handle Slopes?

All three FJD models have a stated maximum climbing capability of 33 degrees, or 65%.

That's considerably steeper than many people might expect from a robotic lawn mower.

However, maximum climbing ability isn't the same as the recommended mowing slope.

FJD lists a suggested/maximum mowing slope of 25° / 47% and recommends planning routes primarily up and down slopes rather than repeatedly travelling across them.

The actual performance will also depend on grass, ground and site conditions.

Can Robot Lawn Mowers Cut Separate Front and Back Lawns?

Yes – and this is an important feature if your property doesn't have one perfectly connected rectangle of grass.

The FV2000, FR4000 and Blix can all work with multiple mowing areas, allowing different sections of a property to form part of the mowing setup.

You can configure separate mowing zones and create travel routes between them. This allows the mower to leave one mowing area, travel across an appropriate connecting route and continue mowing another area automatically.

Depending on the layout of the property, this could include:

• Front and back lawns

• Side lawns

• Separate garden areas

• Lawns divided by paths

• Multiple grass areas around a larger property

This can make a substantial difference to how useful a robot mower is in a real domestic garden.

Instead of carrying the mower between separate lawns, the aim is to create an automated mowing setup covering the whole property.

FV2000 vs FR4000 vs Blix – Which Should You Choose?

The easiest way to decide is to think about the size, layout and complexity of your garden.

Choose the FJD FV2000 if...

Your total mowing area is up to around 2,000m² and you want a capable wire-free robotic mower that can manage one or multiple lawn areas.

For many medium-to-large domestic properties, this is likely to be all the mower you need.

Choose the FJD FR4000 if...

You have a larger property or multiple lawns with a total mowing requirement approaching 4,000m² and want the precision of RTK positioning combined with intelligent vision.

It's particularly suited to substantial lawns, larger homes and grounds where manual mowing takes a considerable amount of time.

Choose FJD Blix if...

You want a robot mower designed around the realities of a more complex residential garden.

Blix is particularly compelling where a garden contains trees, walls, buildings and other features that can make satellite positioning more challenging.

The combination of LiDAR and RGB vision means there's no boundary wire and no RTK station, while still offering substantial mowing capacity.

The decision should be based primarily on lawn size, property layout and which navigation technology is most suitable for the site.

Are Robot Lawn Mowers Worth It?

The answer largely comes down to how much you value your time.

Think about how long it takes you to mow your lawn now.

If it takes an hour and you cut it once a week for six months of the year, that's roughly 26 hours spent mowing every year.

If your lawn takes two hours, you're looking at around 52 hours.

And larger lawns can take considerably longer.

A robot lawn mower isn't simply replacing a lawn mower.

It's automating a repetitive job that would otherwise need to be completed week after week throughout the growing season.

Instead of waiting for the lawn to become long, mowing it, collecting the clippings and repeating the process the following week, the mower can maintain it little and often.

Which FJD Robot Mower Is Right for My Garden?

As a simple starting point:

Up to 2,000m²: Start with the FJD FV2000.

Larger properties and lawns up to 4,000m²: Consider the FJD FR4000.

Complex residential gardens where LiDAR navigation is particularly beneficial: Take a serious look at FJD Blix.

All three can work with multiple mowing areas, so having separate lawns doesn't automatically determine which model you need.

The best choice is the mower whose capacity, navigation system and features best suit your particular property.

Ready to Stop Spending Your Weekends Mowing?

If you're considering a robotic lawn mower but aren't sure which model will work best for your garden, contact Scrase Farms.

We can help you compare the FJD FV2000, FR4000 and Blix based on your lawn size, number of mowing areas, connecting routes, slopes, trees, buildings and other obstacles.

Or explore our range of FJD robotic lawn mowers online and find the right machine for your garden.

Spend less time mowing. Spend more time enjoying your garden.