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20V 4.0Ah Robotic Lawn Mower 1/4 Acre / 10,890 Sq. Ft, Automatic Lawnmower APP Control with Schedule, Self-Charging, Bluetooth Wi-Fi Connect, Cut to Edge

  • Based on 50 reviews
Condition: New
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Availability: 16 left in stock
Fulfilled by TangKun Direct

Arrives Jul 19 – Jul 23
Order within 8 hours and 25 minutes
Available payment plans shown during checkout

Color: Robot Lawn Mower


Features

  • High-Efficiency Brushless Motor: Its efficient brushless motor is powered by a 20-volt 4.0 Ah lithium-ion battery that produces100 min of runtime per charge. The Blue RR 500 mows up to 1/4 acres on schedule every 24 hours or on demand. It has large wheels with two big ones on the back teamed and a smaller two at the front that give it added stability. Extra-grippy wheels and the ability to mow slopes with an incline of 47 percent. This robotic lawn mower is trackless. It leaves no stripes.
  • Easy Installation: Assemble the base station, make sure that the wiring starts at the base station, around the perimeter wire, and ends in the base station to create a full and closed loop. Plug in the AC cord, insert battery into the mower, and install Toua app. The perimeter wire is a vital component that tells the mower when it's reached the edge so it doesn't run riot through the roses or tumble into a void. You cannot test it without running the boundary wire and connecting it to the base.
  • Smart App Control: You can connect via a direct Bluetooth link or your home Wi-Fi. You can program your auto mower to cut any time, day or night, as the mower has a guaranteed noise level of below 60 decibels, no more worrying about mowing too early and waking the neighbors up. You can have conversations and listen to music and the noise of the automatic robotic lawn mower is not even heard even when it mows right by you.
  • Safety and Quality: The Blue RR 500 lawn mower robot has a front bumper containing sensors that will stop, which allows it to find an alternate route if an obstacle is in its path. The mower also comes with a rain sensor. When it gets low on battery or senses rain it automatically returns to its charging bay. If the mower someone lifts off the ground, safety sensors make the blades stop immediately. Along with a big red Stop button that instantly halts the mower's operation.
  • Adjustable Cutting Height: Features three small pivoting blades on the cutting disc, which give it a cutting width of 7 inches, cutting heights range from 0.8 to 2.4 inches and can be adjusted using the big round dial on the top of the mower. Cleaning and Maintenance. Robotic lawn mowers are relatively light, so you can simply flip them over and hose them off to clean away grass clippings. Blades may need to be sharpened or replaced every year.
  • Package Contents: The package includes 1 * ACFARM robotic lawn mower, 1 * charging station, 1 * power adapter, 200 * boundary wire staples, 6 * charging station fixing screws, 2 * connection clips, 150 meters * boundary wire, 3 *extra blades, 3 * instructions, 3 * M4 12 screws,1 *hex key,1 *cardboard distance ruler,1 *20v battery. If you have any questions, please don't hesitate to contact us directly. We will offer you a solution within 24 hours.

Brand: ACFARM


Power Source: Battery Powered


Material: Plastic


Color: Robot Lawn Mower


Style: Robot Lawn Mower


Item Weight: 32.18 Pounds


Cutting Width: 7 Inches


Number of Positions: 7


Operation Mode: Automatic


Product Dimensions: 20.07"D x 14.9"W x 7.8"H


Brand: ACFARM


Power Source: Battery Powered


Material: Plastic


Color: Robot Lawn Mower


Style: Robot Lawn Mower


Item Weight: 32.18 Pounds


Cutting Width: 7 Inches


Number of Positions: 7


Operation Mode: Automatic


Product Dimensions: 20.07"D x 14.9"W x 7.8"H


Maximum Adjustable Cutting Height: 0.8 Inches


Minimum Adjustable Cutting Height: 2.4 Inches


Manufacturer: ACFARM


Item Weight: 32.2 pounds


Country of Origin: China


Item model number: TK-RL-P504


Batteries: 1 Lithium Ion batteries required. (included)


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jul 19 – Jul 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Great mower, excellent customer service!
Color: Robot Lawn Mower
I love this little robot mower! We call it the "Blue Bug." It may not have a pattern to how it cuts your grass, but once it runs regularly and has the length caught up, you'll never even know. I have a fairly large backyard and I never have to mow myself. I realize how well it does work if I leave for a week and disable it... my grass will grow super fast. It does, once in a while depending on what's in your yard, get stuck on something, but that's very manageable. I did have it malfunction recently, and the company was great! They asked for a video of the problem, sent me the necessary part, and it was an easy fix. You don't always get that kind of customer service, especially when you are way past the return window. I have tried many of these mowers that are under $1k and this one was the one I liked best. The customer service makes it well worth the investment as well. :) ... show more
Reviewed in the United States on April 20, 2025 by K. West

  • Works great. Someone stole mine.
Color: Robot Lawn Mower
Works great, once it's installed. You're gonna have to tweak the perimeter, if you have any ditches or dropoffs. Otherwise, it does a great job. I finally got mine set up and working, then, after a few weeks of using it, someone stole it. The goober didn't steal the installation equipment, so he can't use it. This is not the fault of the seller. Everything else was fine. ... show more
Reviewed in the United States on March 5, 2025 by bigpapapurchase

  • Great for small areas, with a few troubles.
Color: Robot Lawn Mower
Overall this has been an outstanding product. It has a few troubles which I'll outline in cons. I broke my ankle a few years back and have trouble with pain on uneven surfaces. I bought this as it was an affordable entry to test the robotic mower waters, and to see if it saves me from pain from mowing. It's been about a month into mow season and I am impressed. After the initial mow, that took about a week of 8hr runs daily, it keeps my back yard nice and trim. Initial set-up was not difficult, and running the wire was straight forward. Make sure to run a "test mow" after you get the boundary wire set. I had to reverse the wires due to the orientation of my dock so the mower knew where the inside of my lawn was. I did have to open the front caster wheels and reassemble them. If the front caster wheels slide on and off the shaft the snap rings were not pressed on the shafts well and popped off. Easy 5 min fix with a screwdriver. Open the wheel and start assembling it onto the shaft making sure the washers and bearings are in the order you took them off, then push the snap ring on and is secure. Pros: The app let's you set up a schedule for your mower. Once it gets the first cut down, up keep is easy with few hiccups. Definitely going to save for a higher end mower after how well this unit functions! Cons: The mower can get beached and run the battery out if it hits a deep enough dip at the right angle. As well as try to climb a tree if a root is inclined just right. The unit will from time to time not dock exact and cause the unit to not charge or show up on the app. If using a separate dock house secure the house. The mower may hit it and turn it blocking the dock causing the mower to run an endless loop returning to dock till the battery runs out. -=[The mower is a random path cuter. Not a traditional mow path. Not a pro or con]=- Overall if you have a small yard and are looking for an affordable entry level robotic lawnmower this is a great deal! I've only had to hit 2 or 3 small patch in my backyard with my push mower that the random path missed over the last month or so. It's quiet and so far the unit is pretty stout. It has payed for itself in the time I've saved and ankle pain I don't have from mowing my back yard. I'm going to be saving up for a high end robotic lawnmower for sure now! Awesome first robotic lawnmower if you are on the fence and curious if one it's right for you. ... show more
Reviewed in the United States on May 24, 2024 by Nathaniel

  • It was a fail
Color: Robot Lawn Mower-Upgrade
Apparently there is not a single spot in my yard that is flat and level enough for it to work. The controls are not user friendly to be charitable. I have another brand robot that I love but wanted a small unit for a separate area. This was a total fail. Since I got it for Christmas and it is now April, it is past the return window. ... show more
Reviewed in the United States on April 23, 2025 by Cordelia Brown

  • Happy customer
Color: Robot Lawn Mower
Writing this review nine months down the line to ensure longevity. If you want serious bang for your buck when it comes to robot mowers, you can’t go wrong. As many of the other reviewers mention, it does take some time to lay the wire and I found it needed to be buried 1 - 2 inches deep to avoid animals and potentially getting caught by the blades. However, once set up is complete the system is very much fire and forget, and the lawn stays looking manicured all the time. Support from the seller was superb when I had a power brick blown out by a lightning storm. He replaced it immediately after my request. For reference, I’m using this on a quarter acre flat backyard with some fairly big trees in place. I lay the boundary wire around the base of the trees to avoid the unit getting stuck, which works well. Overall, very pleased with the purchase. ... show more
Reviewed in the United States on March 30, 2025 by Mark Widgery

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