The Robomow RX12u robotic lawn mower was reviewed over 3 years ago (updated 2020), more than 8 months after its launch. Robomow seemed very excited to launch a very small robotic mower for cutting small lawns… but what are people saying about the Robomow RX12u automower after purchasing it? Is this a good mower of just a neat little robot?
You should ask yourself the following questions before purchasing this mower:
- Is this robotic mower suitable for your lawn size and type?
- Is it worth spending your hard-earned money on?
- Are there better options out there for a similar price?
We will discuss those and the important features of the Robomow RX12u automower so that you can make an informed decision after this review. I will also give you my personal opinion of this and other similar robotic mowers at the end of this review.
Product: Robomow RX12u
General Market Price: USD 600.00 -700
Guarantee: 1 Year full warranty
Ratings/Stars from C-ELMR results:
Robomow RX12u Review Overview
Robomow RX12u Review
Very neat little robotic mower. Cute to look at but not very effective unless your lawn is very smooth, uncomplicated and well kept. Even then, some people have reported having some minor problems. Read full review to find out more about the problems, VALUE and practical/applicable use of this mower, as well as why each rating was given for each aspect above.
– Cheap compared to other mowers
– Great customer service from company
– It hardly finds its charging station on its own
– It spends a lot of time running without mowing
– It gets confused often and just stops in the middle of the lawn for no apparent reason
– It absolutely does not handle lawn well unless the lawn is flat and was immaculately kept to begin with.
– It does not handle slopes up to 8.5 Degrees as well as you think it would.
– It crosses the guide wire frequently.
– It takes too long to charge (16-20hrs!) compared to the work time (90 – 130 minutes).
– Limited cutting heights
– Limited safety features
What is the Robomow RX12u and how will it work to cut your lawn?
The Robomow RX12u is the most basic robotic mower I have reviewed so far. It works in the same general manner as other robotic mowers to cut your lawn but it lacks many important features. It works within the boundaries of a low voltage guide wire to cut within the boundaries you set.
All you need to do is set up the guide wires around the boundaries of your lawn, set up the charging station, connect it to a power outlet and press start and the mower will be off to do its job. The mower gets a signal from the guide wires that interacts with the user interface to keep the mower within the set boundaries of the guide-wire.
The areas mentioned below are the most important features you should look at when considering to buy a cordless electric mower. If you assess all the components of each of these properly, you will not go wrong so this is what we always do for you.
This Robomow RX12u review will cover:
Efficiency and Ease of Use
Ease of locating replacement parts
Customer service from the company
So, let me just start out by saying there is absolutely nothing about the design of this mower that was impressive. It was on levels between “this is okay” to “why did they leave this feature out?”.
Height of grass cut
Very limited. Between 0.5 and 1.7 inches. Therefore, you would need to groom your lawn so that the grass is not higher than 1.7 inches before letting this mower loose on your lawn. It does not have smart cut features to detect when the grass is likely to be growing faster and make adjustments to accommodate this. Therefore, you might end up with an over grown lawn and a very stressed out, under-performing robotic mower in the rainy seasons. Other robotic mowers have this feature.
Size and Weight
As seen in the specs above, this is a small automower. The smallest that I have seen so far is this one. It is also the lightest mower I have seen so far but when compared to the heavier ones, you can see why. This is a very simple mower.
Well, this user interface has nothing to be greatly covited by other robotic mower owners. It has a manual “start” and “stop” option but it has the intelligence to return to the charging station when it is dying. Does it usually make it to the charging station? This is another story and will be discussed in the Performance and Efficiency section.
A robotic mower gives the impression that it can function independently. You will not be supervising it all the time so it should be able to perform without causing chaos.
So is this robotic mower pet safe?
Well, not 100 percent.
- Bad – It could run over your dog’s tail, ripping it viciously so keep your pets with tails away.
- Good – It will stop and turn if it hits any hard abject, pets included.
What happens if it is lifted, tilted or topples over?
Interesting thing happened when I attempted to get answers on Amazon for this question. Take a look at the first answer I got.
Very alarming reply from this disappointed buyer warning me not to buy the product and labeling it as “substandard.” I would have preferred if he elaborated a bit.
To answer my original question though, no it does not contain tilt or lift sensors. So if it is tilted or lifted while running, the blades could do some real damage.
Does Robomow RX12u contain an anti-theft alarm system?
Nope, no it doesn’t. These mowers are very attractive to the eyes and will be stolen if the wrong person gets an eye on it. So if your property is not completely secure, you might want to think twice before buying this Robomow robotic mower.
Does Robomow RX12u have a rain sensor?
Well no, and it will get wet if you do not get a house for it. It is not weather-proof so you will need to take this into consideration.
Ease of use – The Installation Process
This is a relatively hassle-free process. The manual outlines the steps perfectly. There is no additional programming required for the mower to work. All you need to do is lay the guide wires, set up the charging station and press the red power option on the mower. When you need the mower to stop working, press the power button to turn it off. They also provided a YouTube video to assist with the installation process.
YouTube Video Showing how to set up the guide wires and charging station
This mower would have been easier to use if it had WiFi or Bluetooth option to connect to your phone. That way, it could be monitored and powered up or down from inside your house if you do not wish to go outside. This has become a very popular and appreciated feature of recent robotic mowers.
Power, Performance, and Efficiency
Robomow was very excited to see this little mower on the market. They claim that it is the smallest, most affordable mower on the market and this is all good and well but I was not impressed with the power, performance, and efficiency.
This is what the Robomow company says about the Robomow RX12u on YouTube.
According to customers who purchased the Robomow RX12u, these were the major problems with power, performance, and efficiency:
- It hardly finds its charging station on its own
- It spends a lot of time running without mowing
- It gets confused often and just stops in the middle of the lawn for no apparent reason
- It absolutely does not handle the lawn well unless the lawn is flat and was immaculately kept to begin with.
- It does not handle slopes up to 8.5 Degrees as well as you think it would.
- It crosses the guide-wire frequently.
- It takes too long to charge (16-20hrs!) compared to the work time (90 – 130 minutes).
YouTube Video by Reviewer who said it spends half the time spinning and not cutting
Durability and Ease of locating replacement parts
The mower was described by one customer as having very sturdy material. The blades are said to last up to a year after which they must be replaced. There is a 1-year warranty on the entire mower so if anything happens to it within this time, it will be fixed by the company for you. Replacement blades can be found for you on their Website as well as on Amazon and eBay.
Customer service from company
Even though customers rated this mower poorly, they were always very happy with the support from the company.
Who would I recommend this mower for?
I would not buy this mower unless I had a flat, well kept, slow-growing lawn, under 2000 sq meters.
Value – My Final Thoughts
For the cost, it is a reasonable purchase. If you have a more complicated lawn with slopes up to 20 Degrees and have rapidly growing grass, if you can add USD $300 to your robotic mower budget, I would recommend getting the WORX WG794 28-volt Landroid Robotic Lawn Mower instead. It is slightly bigger but has a world of improvements when compared to this mower.