RoboMow RM400 Robotic Cordless Electric Lawn Mower


Recommended for lawns measuring up to 4,200 square feet, the Friendly Robotics Robomow RM400 with Base Station frees you from the expense, back aches, and tedium of cutting your lawn. This affordable, easy-to-use mower is fully automatic, which means it cuts grass entirely by itself. It’s also a safe unit that does its job without producing emissions, so it’s as green as the grass it mows.

Product Features

  • Robotic lawnmower designed to mow almost entirely by itself
  • Efficiently and safely mows lawn, while you relax
  • Compact one blade mulching system; onboard sensor and bumper avoids obstacles
  • Remote control used to mow very narrow areas manually
  • Cuts up to 4,500 square feet on a single 24-hour charge

Power and Performance

The Robomow RM400’s blade spins at a speed of 5,800 RPM and offers a mow height of 0.80-3.15 inches. It also has knobby wheels that tackle high grass and sloping or bumpy ground, and it boasts a range of features for safe, efficient operation.

To help guard against the elements, the Robomow RM400 is both UV protected and weatherproof. For an extra measure of assurance, it’s also equipped with a rain sensor. If it starts raining when the unit is mowing, the RM400 will immediately return to its docking station.

For added convenience, the Robomow RM400 comes with a perimeter switch that automatically activates the area to be mowed, and a remote control for easy transport of the mower from the garage to the lawn and between plots. The remote is also great for manually mowing very narrow areas.

Comfort and Convenience

Specifically, user-controlled theft protection, including an alarm system, protects against unauthorized use of the unit, while a tilt sensor stops the blade from rotating when the unit is tilted.

Grass Collection

The Robomow RM400 doesn’t simply cut your grass–it repurposes the clippings through a patented process called grasscycling. The mower cuts grass into fine clippings and disperses the cuttings over the ground. These clippings quickly decompose and release valuable nutrients and water into the soil, resulting in a better-looking lawn. Grasscycling also leads to a deeper, healthier root system that increases your lawn’s resistance to disease, drought, and insects, and it reduces the amount of water your lawn needs by as much as 85%.


Two-year warranty on the unit and a one-year warranty on the battery.

What’s in the Box

Robomow RM400; perimeter wire and pegs; two maintenance-free 12-AH sealed lead acid batteries and charge pack; and instruction manual.


Back to Top