---
title: "Robomow RK4000 Pro: specs and what the maker claims"
description: "Robomow RK4000 Pro robot mower: claims lawns up to 43,100 sq ft, slopes up to 45%, needs a boundary wire. The maker's claims, not our tests."
canonical: "https://homerobotcompared.com/robot-mowers/robomow-rk4000-pro"
brand: "Robomow"
category: "Lawn mowers"
updated: "2026-10-09"
data_snapshot: "2026-10-07"
---

# Robomow RK4000 Pro

Lawn mower by Robomow. Every figure below is what the maker claims, collected 2026-10-07. We have not tested this robot.

List price: not available.

## Lawn and slopes

| Item | Value |
| --- | --- |
| Lawn size it can handle | 43,100 sq ft (4,000 m²) |
| Slopes | Up to 45% |
| Size group | estate |

## How it finds its way

| Item | Value |
| --- | --- |
| Guidance | Boundary wire |
| Boundary wire | Yes |
| Wire-free | No |
| Needs a base station on the lawn | No |

## Cutting

| Item | Value |
| --- | --- |
| Cutting width | 42 cm |
| Cutting height | 15 to 100 mm |

## Battery, noise and weather

| Item | Value |
| --- | --- |
| Battery | 18.5V 9.6Ah Li-ion |
| Noise | 65 dB |

## Connection and smart home

| Item | Value |
| --- | --- |
| Connection | app (Robomow App 3.0); GSM module |

## Where it is sold

| Item | Value |
| --- | --- |
| United Kingdom | Yes |

Well sourced. Source: https://www.robomow.com/products/rk-series/detail/rk4000-pro-4008423921243

Notes: Noise 53/64/65; 42 cm deck; 110-120 min mow time

## Similar robots

- [Cub Cadet XR5 4000](https://homerobotcompared.com/md/robot-mowers/cub-cadet-xr5-4000.md)
- [EGO RM4000E](https://homerobotcompared.com/md/robot-mowers/ego-rm4000e.md)
- [Honda Miimo HRM4000 Live (Miimo 4000 Live)](https://homerobotcompared.com/md/robot-mowers/honda-miimo-hrm4000-live-miimo-4000-live.md)
- [Hookii Neomow X](https://homerobotcompared.com/md/robot-mowers/hookii-hookii-neomow-x.md)

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Web page: https://homerobotcompared.com/robot-mowers/robomow-rk4000-pro