Introduction
The Dreame L10s Ultra Gen 2 arrived on the market in 2024, whilst both the Roborock Qrevo S5V and the Roborock QV 35S are 2025 offerings. All three units share a similar configuration: robots with a multifunction base that vacuum, mop, auto-empty the dust bin and wash the mops automatically. However, the technical differences between them can influence the user experience depending on the type of home and specific cleaning needs.
The Dreame model features some advanced functions that we don't find on the Roborock models, whilst the latter stand out in other aspects related to suction power. The Roborock QV 35S, moreover, has some limitations compared to its bigger brother, the Qrevo S5V.
Power and Suction
Suction power is one of the points where a clear difference is observed. The Roborock Qrevo S5V develops 12,000 Pa, surpassing the 10,000 Pa of both the Dreame L10s Ultra Gen 2 and the Roborock QV 35S. This advantage can be particularly noticeable on carpets or when there's ingrained dirt.
Regarding the brushing system, the Dreame mounts an anti-tangle silicone main brush, designed to reduce hair tangles. The two Roborock models incorporate the DuoDivide Antienredos system, which pushes hairs towards the central gap to facilitate suction. Both solutions seek to minimise manual maintenance, albeit with different approaches.
Where there is a notable difference is in the side brush. The Roborock Qrevo S5V and the QV 35S feature an anti-tangle side brush, whilst the Dreame L10s Ultra Gen 2 doesn't include it. This can make a difference in homes with long-haired pets, where tangles in the side brush are frequent. None of the three models offers an extendable or liftable side brush.
Mopping
All three robots mop using two rotating mops, a system that has demonstrated good results in practice. Mop lift is similar: the Dreame reaches 10.5 mm, whilst the Roborock models manage 10 mm. This function is useful when the robot moves from hard floors to carpets or rugs, avoiding wetting them.
Mop extension to better reach edges presents important variations. The Dreame L10s Ultra Gen 2 incorporates it via the Roboswing system, which performs a lateral movement to slightly insert the mop under furniture and edges. The Roborock Qrevo S5V also offers mop extension, although without that specific movement. The Roborock QV 35S, on the other hand, doesn't include any extension, which limits its ability to clean edges and corners.
Regarding mop washing in the base, all three units do this with cold water. However, drying presents a relevant difference: the Dreame dries the mops with hot air, whilst the Roborock models use cold air. Hot air speeds up the drying process and helps prevent bad odours and bacterial growth. None of the three automatically removes the mops at the base nor detects dirt on the mops or floor to perform additional scrubbing.
Navigation System
All three robots employ a LiDAR turret to map the home and plan efficient cleaning routes. All feature obstacle avoidance, although with different levels of sophistication.
The Dreame L10s Ultra Gen 2 incorporates a front 3D laser sensor that improves detection of objects on the floor, something the Roborock Qrevo S5V and QV 35S don't have. Additionally, the Dreame includes pet recognition, a function absent on the Roborock models. This can be interesting for those with animals at home who want the robot to adapt its behaviour.
None of the three models mounts an AI camera, front LED for night vision or remote camera access. Nor do they detect curtains. All three integrate intelligent AI cleaning: the Dreame with CleanGenius and the Roborock models with SmartPlan, systems that optimise routes and adjust parameters according to surface type.
Battery Life and Battery
Battery capacity is identical across all three models: 5,200 mAh. However, declared battery life varies. The Dreame L10s Ultra Gen 2 offers 240 minutes of continuous operation, whilst the Roborock Qrevo S5V and the QV 35S reach 180 minutes.
This one-hour difference can be decisive in large homes. With 240 minutes, the Dreame has sufficient margin to complete extensive cleaning without needing to recharge mid-cycle. The Roborock models, with 180 minutes, may need an intermediate recharge on surfaces exceeding 150-170 square metres, especially if mopping is activated.
All three robots share the ability to overcome obstacles up to 20 mm in height, which allows them to negotiate small level changes such as rugs or thresholds without difficulty.
Smart Functions
All models are compatible with external voice assistants such as Alexa or Google Home, facilitating control by voice commands. None integrates its own voice assistant or robotic arm.
The ability to overcome steps is the same across all three: 20 mm. This is sufficient for most domestic situations, although it doesn't allow more pronounced level changes to be negotiated.
Multifunction Cleaning Base
All three bases perform auto-emptying of the dust bin, mop washing and drying. This is where we find significant differences in terms of capacities and additional functions.
The Dreame L10s Ultra Gen 2 stands out for including a detergent tank in the base, something neither the Roborock Qrevo S5V nor the QV 35S offer. This allows the base to dispense cleaning product during mop washing, improving hygiene without manual intervention.
Dust bag capacity also varies: the Dreame reaches 3.2 litres compared to the 2.7 litres of the Roborock models. In practice, this translates to longer intervals between bag changes. The Dreame's clean and dirty water tanks are equally more generous: 4.5 and 4 litres respectively, compared to the 4 and 3.5 litres of the Roborock models. For large homes or with frequent mopping, this difference can reduce the need to refill and empty tanks.
The Dreame L10s Ultra Gen 2 offers an optional kit for plumbing connection, which is purchased separately. Although it doesn't come integrated from the factory, it can be convenient for those seeking to fully automate water maintenance. The Roborock models don't have this option.
None of the three bases includes self-cleaning of the washing tray, UV disinfection or automatic mop changing.
Dimensions
The Dreame L10s Ultra Gen 2 measures 350 mm in diameter and 97 mm in height. The Roborock Qrevo S5V and QV 35S are slightly wider (353 mm) but somewhat lower (96.5 mm). The half-millimetre difference in height is practically imperceptible, although technically the Roborock models could slip under very tight furniture more easily.
Regarding the bases, the Dreame is taller (590.5 mm compared to 521 mm) but less deep (456.7 mm compared to 487 mm). Depending on available space, a taller and narrower base may fit better in certain corners, whilst a lower and deeper one may be more stable or discreet.
Real-World User Experience
For large homes, the Dreame L10s Ultra Gen 2 presents clear advantages: greater battery life (240 minutes), larger base tanks and higher capacity dust bag. This reduces interruptions and maintenance tasks. The detergent tank adds a convenience bonus by automating the use of cleaning product.
In homes with pets, the choice depends on priorities. The Dreame incorporates pet recognition and a front 3D laser sensor, which improves navigation in the presence of animals. However, the Roborock Qrevo S5V and QV 35S feature an anti-tangle side brush, which can facilitate maintenance if there's a lot of hair. The Roborock models' DuoDivide brush is also designed to minimise tangles.
If suction power is a priority, the Roborock Qrevo S5V excels with its 12,000 Pa, especially useful on carpets or for removing ingrained dirt. The Dreame and the Roborock QV 35S, with 10,000 Pa, offer sufficient performance for most situations, although with less margin in demanding conditions.
For edge mopping, the Dreame L10s Ultra Gen 2 and the Roborock Qrevo S5V have the advantage thanks to mop extension. The Roborock QV 35S, lacking this function, may leave uncleaned areas in corners and next to skirting boards. The Dreame's hot air drying also represents an improvement in hygiene and speed compared to the cold air of the Roborock models.
Conclusion: Which to Choose?
Choose the Dreame L10s Ultra Gen 2 if you're looking for the greatest possible battery life and live in a large house. The 240 minutes of operation, larger tanks and 3.2-litre dust bag reduce interruptions and maintenance. The detergent tank and hot air drying add convenience and hygiene. The front 3D laser sensor and pet recognition improve navigation in homes with animals. Mop extension with Roboswing optimises edge cleaning. Additionally, you have the option to purchase the plumbing connection kit if you wish to fully automate water supply.
Choose the Roborock Qrevo S5V if you prioritise suction power. With 12,000 Pa, this model offers the highest performance of the three, ideal for carpets or difficult dirt. The anti-tangle side brush facilitates maintenance in homes with pets. Mop extension allows edge cleaning, although without the Dreame's Roboswing movement. It's a balanced option for medium-sized homes where the 180-minute battery life is sufficient.
Choose the Roborock QV 35S if you're looking for a more economical alternative within the Roborock range and don't need maximum power or mop extension. With 10,000 Pa of suction and 180 minutes of battery life, it covers basic vacuuming and mopping needs. The anti-tangle side brush and DuoDivide system help reduce hair tangles. It's suitable for small or medium-sized homes without special requirements regarding edge cleaning or pet recognition.
