Landxcape LX799 Cordless Robot Lawnmower (300m², 20V/2.0Ah)

How large a lawn can the Landxcape LX799 handle?

The LX799 is rated for lawns up to 300m². That said, the battery provides around 70 minutes of mowing per charge. On a full 300m² lawn it will not cover the entire area in a single session. Over two or three days of automatic operation the whole lawn will be covered. If your lawn is closer to 200m² you will find coverage is more consistent per session. Some users with 190m² lawns report that the battery depletes before the full area is cut in one go but that the whole lawn is covered within a few days of regular use.

Does it need Wi-Fi or a smartphone app to work?

No. The LX799 has no Wi-Fi connectivity and no companion app. All controls are handled directly on the mower via the digital display. You set the time, date, PIN code and mowing schedule on the unit itself. Some people see this as a limitation but it also means there is nothing to go wrong with software updates or app connectivity. The mower simply does its job without needing your phone or home network.

How difficult is the perimeter wire installation?

Installation takes a couple of hours for most gardens. The kit includes 130m of bounding wire, 130 staples and 7 screws to fix the charging station. The wire needs to be laid approximately 25cm from any raised edges such as borders, walls or paving. In narrow zones where the mower passes both outbound and inbound, the two wire runs must be at least 1 metre apart. The instructions are available in multiple languages including Italian and are considered clear by most users. Online tutorials are also widely available if you need extra guidance.

Can it cope with slopes and uneven ground?

Yes. The LX799 is rated to handle slopes up to 25 degrees which covers most residential UK gardens. The patented mowing technology also allows it to navigate narrow passages that tilt up to 15 degrees. It does not need perfectly flat ground to operate. One thing to note is that on soft or waterlogged ground after heavy rain the mower can occasionally get stuck as there is no rain sensor to prevent it operating in wet conditions.

Is there a rain sensor?

No. The LX799 does not include a rain sensor. This means it will continue to operate in wet weather unless you manually stop it or disconnect the charging station. Mowing on wet or soft ground increases the risk of the mower getting stuck and can leave wheel marks on the lawn. If rain is forecast it is worth pausing the schedule manually. This is one of the trade-offs at this price point compared to higher-end models.

How do the safety features work?

The mower has three key safety mechanisms. First, a lift sensor cuts the blades the moment the unit is picked up off the ground. Second, a tilt sensor stops the blades if the mower tips beyond a safe angle. Third, a shock sensor detects collisions with obstacles such as trees, garden furniture or people. When it detects a collision it reverses and changes direction. There is also a large, clearly visible emergency stop button on the top of the unit for immediate manual shutdown.

How long do the blades last and how are they replaced?

Blade life varies depending on lawn size, grass type and frequency of use. The forward and reverse rotation system is designed to halve blade wear compared to single-direction cutting. Some users report that after a full season of regular use the original blades are still in good condition. The kit includes 3 replacement blades and screws. The side-load blade design makes swapping blades straightforward. A hex wrench is included in the box for this purpose.

What happens with complex lawn shapes like L-shapes or lawns with islands?

The LX799 works best on rectangular or simple-shaped lawns. On L-shaped lawns or gardens with internal features like flower beds, the random mowing pattern can leave occasional uncut patches known as grey zones. These are areas the mower statistically passes over less frequently. The issue is more pronounced in complex layouts. For simple rectangular lawns this is rarely a problem. If your garden has a complex shape you may need to manually move the mower to secondary zones or accept that some areas will need occasional trimming by hand.