Frequently asked questions

Here you can find the most frequently asked questions about the Robotic Lawnmowers.

How do I know if the Robotic Lawnmower is suitable for my garden?

Simply check if your garden is suitable using the product specifications. Use the tips to determine which GARDENA Robotic Lawnmower suits your garden.

GARDENA R38Li:

  • Lawn area size: Maximum 380 m² +/- 20%
  • Inclination inside the working area: maximum 25%
  • Narrow passage: Minimum 90 cm (from wire to wire)

GARDENA R40Li:

  • Lawn area size: Maximum 400 m² +/- 20%
  • Inclination inside the working area: maximum 25%
  • Narrow passage: Minimum 90 cm (from wire to wire)

GARDENA R45Li:

  • Lawn area size: Maximum 450 m² +/- 20%
  • Inclination inside the working area: maximum 25%
  • Narrow passage: Minimum 90 cm (from wire to wire)

GARDENA R50Li:

  • Lawn area size: Maximum 500 m² +/- 20%
  • Inclination inside the working area: maximum 25%
  • Narrow passage: Minimum 90 cm (from wire to wire)

GARDENA R70Li:

  • Lawn area size: Maximum 700 m² +/- 20%
  • Inclination inside the working area: maximum 25%
  • Narrow passage: Minimum 60 cm (from wire to wire)

GARDENA R80Li:

  • Lawn area size: Maximum 800 m² +/- 20%
  • Inclination inside the working area: maximum 25%
  • Narrow passage: Minimum 60 cm (from wire to wire)

GARDENA (smart) SILENO:

  • Lawn area size: Maximum 1000 m² +/- 20%
  • Inclination inside the working area: maximum 35%
  • Narrow passage: Minimum 60 cm (from wire to wire)

GARDENA (smart) SILENO+:

  • Lawn area size: Maximum 1300 m² +/- 20%
  • Inclination inside the working area: maximum 35%
  • Narrow passage: Minimum 60 cm (from wire to wire)
For more information, see operating instructions or visit the "Products" section of this Website.

Can I use a GARDENA Robotic Lawnmower for separate lawn areas?

If the area consists of two separate lawn areas where the Robotic Lawnmower can’t go by itself, we recommend making it possible to lay the wire to the other areas. In this case, the Robotic Lawnmower is supported manually between main and secondary areas. Use the MAN mode and the Robotic Lawnmower mows until the battery is empty. Using this method, you will need to take the Robotic Lawnmower to the charging station by yourself.

See the operating instructions for detailed information about this procedure.

Does the charging station need to be placed on the lawn or could it be placed on a vegetable patch?

The area in front of the charging station is a high-traffic location. The Robotic Lawnmower should be able to start in any direction and return to the charging station from any direction. For the (smart) SILENO / SILENO+ you have a choice of where to position the charging station. For further information, see section "How to install the charging station for the GARDENA Robotic Lawnmower" in the operating instructions.

How small can the narrow passages for the GARDENA Robotic Lawnmower in my garden be?

It is better to avoid long narrow passages and Areas narrower than 1.5 m. Otherwise the Robotic Lawnmower might mow the passage for too long or be unable to remove itself from the passage.

How narrow could the passages (approx. 1 m in length) for the GARDENA Robotic Lawnmower in my garden be?

That depends on the Robotic Lawnmower. R38Li, R40Li, R45Li and R50Li: The minimum width is 90 cm between the boundary wires. R70Li, (smart) SILENO / SILENO+: The minimum width is 60 cm between the boundary wires.

How much grass does the GARDENA Robotic Lawnmower leave standing at the edge?

The width of the uncut grass strip depends on how close the boundary wire can be laid to the edge of the lawn.
  • e.g. at 5 cm (R38Li, R40 Li, R45Li, R50Li and R70Li) or 10 cm ((smart) SILENO / SILENO+) from the lawn edge, along brick paths that can be passed by the Robotic Lawnmower, there will be no uncut grass strip.
  • e.g. at 20 cm (R38Li, R40 Li, R45Li, R50Li and R70Li) or 25 cm ((smart) SILENO / SILENO+) from the lawn edge, along beds or crushed rock that cannot be driven by the Robotic Lawnmower, there will be a narrow strip of grass.
  • e.g. at 30 cm (R38Li, R40 Li, R45Li, R50Li and R70Li) or 35 cm ((smart) SILENO / SILENO+) from the lawn edge, along a wall or around trees, there will be a slightly wider strip of grass.
To make sure that the grass is completely mowed or that only small strips of uncut grass are left, change the layout of your garden, for example by edging the lawn with curb stones or concrete slabs at lawn height.