Introduction
The Roborock Qrevo Edge S5A and the Xiaomi X20 Max are two high-end robot vacuum cleaners launched in 2024 that compete in a segment where advanced mopping technology makes the difference. Both units incorporate a multifunctional base with mop washing, which allows them to offer much more efficient mopping than basic models.
The Roborock model stands out for its raw power and an advanced intelligent navigation system, whilst the Xiaomi opts for front 3D laser sensors and LED for night vision. These are options designed for users seeking complete automation in medium-to-large homes, with real needs for recurring mopping and the ability to overcome small obstacles such as rugs or uneven surfaces.
Power and Suction
The difference in suction power is enormous: 18500 Pa in the Roborock Qrevo Edge S5A versus 8000 Pa in the Xiaomi X20 Max. In practice, this means that the Roborock model can better handle medium-pile carpets, ingrained dirt or heavier debris such as sand or dry soil. The Xiaomi, with its 8000 Pa, is still capable of performing daily cleaning on hard floors without problems, but you'll notice limitations on textile surfaces.
The main brush also differs. The Roborock's DuoDivide anti-tangle system pushes hairs towards the central suction gap, effectively minimising tangles. The Xiaomi's TriCut 3.0 combines bristles with blades that cut hairs, also with an anti-tangle system already installed. Both are designed for homes with pets, although the technical approach varies.
The Qrevo Edge S5A's extendable side brush allows it to sweep corners better, something the X20 Max cannot match. Additionally, the Roborock's side brush includes anti-tangle technology, whilst the Xiaomi lacks this feature. For homes with tricky corners or dust accumulation on edges, this advantage can be particularly noticeable after several weeks of use.
Mopping
Both robots integrate a two rotating mop system, which guarantees active mopping with constant friction. The mops lift 10 mm on both models, sufficient to avoid wetting thin rugs during mixed vacuuming and mopping mode.
The Roborock Qrevo Edge S5A incorporates FlexiArm mop extension, designed to better reach edges and skirting boards. The Xiaomi X20 Max also features mop extension, although without a specific commercial designation. Both systems substantially improve perimeter mopping compared to models without this function.
Where the Roborock pulls ahead is in mop washing: it uses water at 75°C and drying with air at 45°C. The Xiaomi washes with hot water and dries with hot air, but without specifying exact temperatures. The higher temperatures of the Roborock model help to better remove grease adhered to the mops and accelerate drying, reducing the risk of bad odours.
Dirt detection on mops and on the floor is exclusive to the Qrevo Edge S5A. This allows it to rewash particularly dirty areas automatically, without manual intervention. The Xiaomi lacks this function, which means the user must manually programme additional passes if they detect that an area needs more attention.
Navigation System
Both robots use a LIDAR 3D turret to map the home with precision. However, the Xiaomi X20 Max also incorporates a front 3D laser sensor and night vision LED, technologies absent in the Roborock. These elements improve obstacle detection in low-light conditions and allow small objects to be identified more reliably.
The Roborock Qrevo Edge S5A compensates with its RR Mason 11.0 algorithm and the SmartPlan 2.0 system, which intelligently optimises cleaning routes. The Xiaomi also has AI intelligent cleaning, although it doesn't specify the exact algorithm. In environments with lots of furniture or complex rooms, the difference may be noticeable in route efficiency.
Neither model includes an AI camera, pet recognition or curtain detection. Nor do they allow remote camera access, something that some users value for additional home surveillance.
Autonomy and Battery
The battery capacity is identical: 5200 mAh in both robots. However, the battery life differs notably. The Roborock Qrevo Edge S5A achieves 180 minutes of continuous operation, whilst the Xiaomi X20 Max remains at 120 minutes. This one-hour difference can be decisive in large homes or with multiple rooms.
In practice, 180 minutes allow large surfaces to be covered without the need for intermediate recharging, which speeds up the complete cleaning process. The Xiaomi, with 120 minutes, is still sufficient for flats of up to 100-120 m² in standard vacuuming mode, but may require recharging in larger houses or if maximum power mode is activated.
Smart Functions
Both robots can overcome obstacles up to 20 mm in height, which allows them to negotiate medium-thickness rugs, door joints or small uneven surfaces without problems. This capability is especially useful in homes with different types of flooring or transitions between rooms.
Multifunctional Cleaning Base
The Roborock Qrevo Edge S5A includes a tray self-cleaning 2.0 system already installed, which significantly reduces manual maintenance of the base. The Xiaomi X20 Max doesn't have this function, so the user will need to periodically clean the tray where the mops are washed to avoid accumulation of dirt and bad odours.
The dust bag capacity is slightly higher in the Roborock: 2.7 litres versus 2.5 litres in the Xiaomi. Both clean water tanks have 4 litres capacity, sufficient for several mopping sessions in medium-sized homes. The Roborock's dirty water tank reaches 3.5 litres, whilst the data is not available for the Xiaomi.
The Roborock robot's internal dust container measures 325 mm, a detail not specified for the Xiaomi. The Roborock's water tank has 80 ml, whilst the Xiaomi simply confirms that it does have a water tank without specifying exact capacity.
Neither model incorporates a detergent tank, UV disinfection or connection to integrated plumbing or via optional kit.
Dimensions
The Roborock's diameter is 352 mm versus 350 mm for the Xiaomi, a minimal difference. The height does vary slightly: 98 mm in the Qrevo Edge S5A versus 97 mm in the X20 Max. That one millimetre difference has no practical relevance for passing under furniture, as both are around the standard limit for sofas and low beds.
The base dimensions differ more. The Roborock has 487 mm depth and 521 mm height, whilst the Xiaomi measures 420 mm depth and 563 mm height. The Roborock's base takes up more space forwards, whilst the Xiaomi's is taller but less deep. It's advisable to measure the available space before deciding, especially if you plan to place the base in a corner or under furniture.
Real-World User Experience
The Roborock Qrevo Edge S5A fits better in large homes thanks to its greater battery life and suction power. If you have pets, the DuoDivide anti-tangle brush and the side brush with the same technology reduce maintenance. The tray self-cleaning 2.0 minimises manual tasks, something that's appreciated in day-to-day use.
The Xiaomi X20 Max is more suitable for users who value night navigation or have many small obstacles on the floor, thanks to its front 3D laser sensor and night vision LED. Its shallower base depth can be an advantage in tight spaces.
For hard floors and parquet, both work correctly. On carpets, the power difference clearly favours the Roborock. If you prioritise more automated and efficient mopping, the Qrevo Edge S5A's dirt detection makes the difference by rewashing problem areas without you having to intervene.
Conclusion: Which to Choose?
Choose the Roborock Qrevo Edge S5A if: you live in a large house (more than 120 m²), you have pets with long hair, you're looking for maximum suction power, you value extended battery life and you prefer to minimise base maintenance thanks to tray self-cleaning. Also if you need the robot to automatically detect dirty areas and mop them again without manual programming.
Choose the Xiaomi X20 Max if: your home is medium-sized (up to 100-120 m²), you value night navigation with LED and front 3D laser sensor, you have limited depth space for the base or you prefer an option that will probably have a more competitive price without giving up a multifunctional base with mop washing and drying with hot water and hot air.
