robomow rc304u

ROBOMOW RC304u Review

Rbomow RC304u


Build Quality











  • Good Build Quality
  • Strong Blades for Cutting Heavier Grass
  • Long Life Battery
  • EDGE Cutting System


  • Expensive
  • Missing Wi-fi

The Robomow RC304u is a connected robot mower for yards up to 500m², composed of up to 3 sub-zones or 2 separate zones. The RC304 robot mower is a medium-range model of the Robomow brand, whose efficiency and ease of use will make it your best friend for maintaining your lawn.

Pros & Cons


  • Good Build Quality
  • Strong Blades for Cutting Heavier Grass
  • Long Life Battery (10 Years)
  • EDGE Cutting System


  • Expensive
  • Could have Wi-fi rather than just Bluetooth

The Robomow RC304u is a very elegant looking machine. At first glance, it is very different from a lot of other automatic mowers. With its long slender curved body, it has much nicer than some of the other box on wheels models that are available online these days.

With its array of features like the cut-to-edge feature and its long life, it will serve you well for many years.

It is not the quietest model but on eco mode, it’s still has a decent sound level of just 64dB. But this is a small trade-off as the solid blades give the mower some more power for the more challenging parts of the lawn.


Better cut quality

Its patented Grassyccling blade has been treated to be particularly resistant. The first mowing of the season therefore poses no problem for him; tall grass is not an obstacle for the RC304.

Its powerful cutting system and lithium batteries allow the robotic lawnmower RC304 to finish the job much faster than robotic lawnmowers. Recharges in just 50 to 70 minutes!

EDGE system

Robomow RC304 is the only robotic mower, with the others in the RS range, which can cut the grass beyond the width of its wheels. This means its special edge mode allows it to cover lawn edges much better than other models on the market. Customers have said that this is a great feature and that it does live up to the claims made by Robomow.

ECO Mode

Eco mode is a low power cutting mode that allows the mower to run quieter and for a longer period. This just means that the mower lowers the speed of the cutting blade to save power and make the cutting quieter. It can also extend the time that the mower will spend cutting.


These mowers use lithium iron phosphate batteries rather than the standard of a lithium-ion or lithium-polymer battery. The primary benefit of this is the overall life of the battery. Not its single charge life, that will be like other lithium-ion batteries, but its total lifespan is greater. The overall life of these batteries can be up to 10 years. Meaning that your mower will happily be mowing away for many years to come.

Rain Sensor

The mower also has an integrated rain sensor. This means that it will only mow when there are good conditions so that you get the best cut on your lawn.

Solid 3-point star blades

The Robomow RC304u comes with a 3-pointed star blade rather than smaller razor blades on a spindle. Meaning that the mower can cut through heavier grass and that the blades are more durable and will have a longer life than others.

Build Quality

The Robomow RC304u has always made good quality products and this one is nothing different. It has a well-designed body and very sturdy design, while also being very nimble with its wheel arrangement on with the single rotating wheel on the front. The body has a very solid feel to it.  


Limited connectivity

This model does not come with Wi-Fi meaning that it has no smart home integration. It does however still have Bluetooth and uses the Robomow 2.0 app so you will get all the functionality.

Brushed not Brushless motors

This is not that big of an issue but is worth mentioning. Brushed DC motors are not as reliable as brushless ones do not have parts that wear out over time like brushed ones do. This just means that the brushless ones are more efficient, usually quieter, and will last longer.

Robomow RC304u Tehcnical Specifications

Tehcnical Specifications
AppRobomow app 2.0
Battery Capacity2.4 Ah
Battery TypeLithium Iron Phosphate
Battery Voltage26V
Charge Time50-70 min
Cutting Time45-50 min
Working Area1000 m²
Perimeter TypePiremeter wire
Maximum Incline20°
Cutting Width11 Inch | 28 cm
Cutting Height - Min0.8 inch | 2cm
Cutting Height - Max2.2 inch | 6 cm
Cutting System2 cutting heads with 3 fixed blades in each.
Cutting MotorDC Brush
Wheel MotorUnknown
Sound Level64 dB - 69dB
Anti-TheftPin code
Dimensions25 (L) x 18(W) x 8(H) inch | 63(L) x 46(W) x 21(H) cm
Weight25lb | 11.4kg
Warranty1 Year


If you are looking for a mower that doesn’t have all the bells and whistles of other mowers but is a good quality machine that will last you for years and years and years, then this is the one. With its long-life batteries, strong cutting, and edge cutting capacity, it will take care of any small to medium lawn perfectly.

We like the Robomow RC304u a lot as it has just the right mix of features that make it the set and forget kind of mower that will just keep going for years to come. If you can spare the little extra money it will work for you for a long time.

More information availalbe on the Robomow RC304u here.

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