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  • RoboMow RM400 Robotic Cordless Electric Lawn Mower with Docking Station, 25-Inch (Discontinued by Manufacturer)
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RoboMow RM400 Robotic Cordless Electric Lawn Mower with Docking Station, 25-Inch (Discontinued by Manufacturer)

Price: $1,999.99 + $65.00 shipping
In stock.
Usually ships within 4 to 5 days.
Ships from and sold by Give5ToCancer.
  • 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

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Customer Rating 5.0 out of 5 stars   (2) 3.5 out of 5 stars   (12) 4.1 out of 5 stars   (834) 3.5 out of 5 stars   (34)
Price $1,999.99$1,127.69$189.99$2,199.99
Shipping $65.00FREE ShippingFREE ShippingFree Shipping
Sold By Give5ToCancerAmazon.comAmazon.comGive5ToCancer
Power Source cordless-electric cordless-electric manual cordless-electric
Length 35 inches 19.2 inches 24 inches 34.5 inches
Height 12.5 inches 10.6 inches 14.25 inches 26 inches
Width 26 inches 19.2 inches 23.5 inches 13 inches
Weight Information not provided 24 pounds 52 pounds Information not provided
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Product Details

  • Product Dimensions: 35 x 26 x 12.5 inches
  • Shipping Weight: 65 pounds (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S.
  • Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
  • ASIN: B001204SFU
  • Item model number: RM400
  • Average Customer Review: 5.0 out of 5 stars  See all reviews (2 customer reviews)
  • Amazon Best Sellers Rank: #239,727 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)

Product Description


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.

Robomow RM400
At a Glance:
  • Compact, powerful mowing/mulching system works by itself
  • Battery powered for emission-free operation
  • Tilt sensor stops the blade from rotating if the unit is tilted
  • Grasscycles for a healthier, greener lawn that requires less water
  • Weatherproof design with rain-sensor technology
  • 2-year warranty on the unit; 1-year warranty on the battery

Robomow does all the work so you don't have to.

Docking station and on-board
charging for true automation.
Automatic Lawnmower Does All the Work for You
The Robomow RM400 is an automatic lawnmower that cuts grass all by itself. This compact, one-blade mowing/mulching system mows on its own within a boundary that you outline with a thin wire (included).

Once you handle the initial wire setup, all you have to do is schedule a program, sit back, relax, and mow! The Robomow RM400 will depart from its Base Station on your chosen days and times, and over the course of a three-day period (of three consecutive mowing sessions), it will mow up to 4,500 square feet.

When it's done mowing, the Robomow RM400 will return to the Base Station for charging until the next scheduled operation. With this mower, you can be your lawn will be maintained, even when you're busy or away from home.

Wallet-Friendly Choice
Unlike conventional lawn mowers that pollute as much as 40 late-model cars in just one hour of use, Robomow RM400 offers a way to keep your lawn looking great without sacrificing the environment.

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%.

And because Robomow RM400 doesn't require gas, oil, tune-ups, or spark plugs, it will save you money.

Safe, Powerful Operation on Any Lawn
In addition to its environmental benefits, 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.

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.

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.

Dimensions and Warranty Information
The Robomow RM400 measures 20.5 x 12.0 x 25.0 inches (WxHxD) and weighs just 39 pounds. It is backed by a 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.

Product Description

The RM400 is recommended for lawns of up to 3,200-4,300ft (depending on grass type and condition). Robomow RM400 is an automatic lawnmower that cuts the grass all by itself. It comes with a Base Station and it will depart from the Base Station at the pre-set scheduled days and times. At the end of each operation Robomow returns to the Base Station for charging until the next scheduled operation. Your lawn will be maintained even when you are away from home! RM400 is the new generation of Robomow, a fully automatic mower that anyone can afford! Prices are the best in the market! features Compact one blade mulching system Remote Control used to mow very narrow areas manually (available as an accessory) User controlled theft protection including an alarm system Tilt Sensor stops rotating blade immediately when Robomow is tilted Technical specifications: Weight: 39 lb. (incl. the batteries) Dimensions: 25 l x 20.5 w x 12 h Color: Green Mowing Height: 0.80-3.15, easy to set Two maintenance-free 12 AH sealed lead acid batteries Rain sensor: prevents mowing while it is raining

Customer Questions & Answers

Customer Reviews

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Most Helpful Customer Reviews

45 of 53 people found the following review helpful By Amazon Customer on May 11, 2009
Verified Purchase
I bought this in Sept 2008. Where I live the grass growing season is winding down in Sept. It spent winter unheated pluged in. I took it out in May and have cut the grass twice this year. It cuts the edge and them random motion around the yard. So far it has been flawless. I am looking forward to tall grass to see how the raandom motion looks. I plan to run it 2 or 3 times a week to stay on top of it. I also got the wireless remote control and a replacement blade. They recomend a new blade every 200 hours. I have 52 hours on it to date. The LCD readout gives you more data then you will want to know....Update 9/13/12 Still runs great. Still on original battery. Changed the blade twice. 156 hours on unit. Wife took over most of the back yard for gardening and I put in a garden Koi Pond so there is now less lawn to cut. We have reconfigured the perimeter wire several times.
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1 of 1 people found the following review helpful By A buyer on May 25, 2014
I bought one of these a few years ago and it's in its third season of cutting the grass.
I am really pleased with it. I cut the grass manually at the start of the season and maybe once during the winter - the Robomow does all the grass cutting from April to mid October. I like to watch it while I sit with a coffee but it cuts whether I am there or not - six days a week.
The battery is still working fine. It cuts better with a new blade each season.
The grass does not have nice lines up and down as with a standard mower but it's evenly short and healthy.
It does take a few runs to get the grass level if for any reason it does not get cut for a week - eg applying fertiliser/weedkiller.
If it's wet it will still cut the grass but the underside will need cleaning more regularly.
The dogs are used to it now
One of my better purchases
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