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Roborock S7 MaxV Ultra vs Dreametech DreameBot L10s Ultra

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In this article, we are going to compare and contrast two highly advanced robot vacuums: the Roborock S7 Max V Ultra vs the Dreamtech DreameBot L10s Ultra. We’ve put them both through our newest set of robot vacuum tests and will let you know which one came out on top, and why!

Roborock S7 MaxV Ultra

Roborock S7 MaxV Ultra

Dreametech L10s Ultra

Dreametech DreameBot L10s Ultra

Comparing the S7 MaxV Ultra and Dreametech L10s Ultra

Features and Specs

The first category we’ll look at is features. “Ultra” means top-of-the-line for both Roborock and Dreametech, so these two robot vacuums have just about every feature that’s currently available for premium robot vacuums. 

Up until very recently, these were the best you could buy from each brand. On the Roborock side, another Ultra model, the S8 Pro Ultra has taken the top slot.

Both the Roborock S7 MaxV Ultra and Dreametech L10s Ultra have:

  • Electric mop systems – Electronic mop systems are more sophisticated than gravity-fed systems and allow for finer adjustments such as how much water is dispersed. 
  • Carpet recognition – Both will recognize carpet and lift their mopping pads. This not only prevents the carpet from getting wet, but it also means they can vacuum and mop in the same run (which is incredibly useful). 
  • LiDAR mapping and navigation – LiDAR mapping and navigation systems are the gold standard for robot vacuums and unsurprisingly, these high-end robots both have it.
  • Obstacle recognition and avoidance – Both are equipped with front-mounted obstacle avoidance sensors that help them identify and avoid objects that other robot vacuums miss. 
  • Full-service auto-empty and water top-off docks – The docks that come with these robot vacuums not only evacuate their dust bins automatically but also wash the mop pads and refill the mops’ water tanks.

We take into account a variety of specs and features and, at least on paper, these two robot vacuums are very evenly matched. Due to having a slightly larger dustbin, the Roborock did have a slightly higher features score than the DreameBot. 

For context though, when it comes to features these two robot vacuums had the highest scores we’ve ever seen out of the 70+ robot vacuums we’ve tested. 


In the performance category we sample each robot vacuum’s power and pickup ability in the studio with a series of tests. Since both models are mopping robot vacuums, we also tested those capabilities. Again, we found them to be fairly evenly matched. 

Taking Suction and Airflow Readings from the Dreametech DreameBot L10s Ultra
Taking suction and airflow readings. © Vacuum Wars

Suction and airflow

This is starting to become a theme, but once again, the two units had nearly identical suction scores. Airflow scores were similar, although the L10s Ultra did outscore the S7 MaxV Ultra in that regard.  

Debris pickup tests

On the crevice pickup test, the S7 MaxV Ultra did much better than the L10s Ultra, probably because of its new floating brush design. Floating brushes are designed to help the brush conform to flooring surfaces better, and Roborock seems to have a better one. 

Performing the Crevice Pickup Test - S7 MaxV Ultra vs DreameBot L10s Ultra
Performing the crevice pickup test in the Vacuum Wars studio. © Vacuum Wars

While they were both significantly above average in our carpet deep clean test, the Dreametech L10s performed better than the Roborock. 

For those not familiar with this test, it is where we see how good they are at picking up sand that we have purposefully deeply embedded in carpeting. To determine how well a robot vacuum does, we weigh the sand first. Then, we measure the robot’s dustbin before and after its timed attempt. With that data, we can calculate how much debris each robot was capable of teasing out of the carpet. 

Performing Surface Debric Pickup Tests - Roborock S7 MaxV Ultra vs Dreametech DreameBot L10s Ultra
S7 MaxV Ultra and DreameBot L10s Ultra performing pickup tests side-by-side. © Vacuum Wars

Vacuuming up surface debris

We found them both to be great at picking up debris of all shapes and sizes, and the flooring type didn’t matter much. They performed well on both hard floors and carpets. While it was not a dramatic difference, the S7 MaxV Ultra was better at picking up fine debris on hard floors than the L10s Ultra.

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The robots use different methods to mop floors, so we were really interested to see the results of our mopping test in particular. The L10s Ultra uses a spinning brush system whereas the S7 MaxV Ultra uses a vibrating mop pad system. 

Surprisingly, as far as performance goes, we didn’t find any significant differences in their mopping ability. There was one issue with the L10s Ultra that was negative, and we’ll cover that in an upcoming section. 

FLiR Imagery Mopping Test - Roborock S7 MaxV Ultra vs Dreametech DreameBot L10s Ultra
Analyzing both robots’ mopping with the help of FLIR imagery. © Vacuum Wars

When we tallied up the scores in the performance category, the Roborock S7 Max V’s again just beat out the Dreamtech L10s. 

In this review we are using some freshly-designed navigation tests where we have a standardized floor plan that does not change and can be recreated every time we test a robot vacuum. Additionally, after giving each robot vacuum several test runs, we give each of them three full runs in different conditions and power settings. The result is a ton of data to analyze that we then break data down into six different scores. 

Efficiency and area cleaning

What we found is that both robot vacuums were very similar in terms of efficiency. By efficiency, we mean how many square meters per minute they could cover while cleaning. 

Cleaning Pattern and Map View - S7 MaxV Ultra vs Dreametech L10s Ultra
Both robots’ cleaning pattern as viewed in their companion Apps. © Vacuum Wars

But speed isn’t everything. We also consider how much area they actually cleaned during that time. Here the Roborock S7 MaxV Ultra consistently covered two square meters more than the DreameBot L10s Ultra, the difference being 33 square meters to 31. 

In other words, the Roborock was more persistent at getting to harder-to-reach places than the DreameBot. And, it cleaned a greater area without sacrificing much in terms of efficiency. So, the S7 MaxV Ultra got a higher score here.

Robots and Auto-Empty Docks Side-by-Side - Roborock S7 MaxV Ultra vs Dreametech DreameBot L10s Ultra
The robots and auto-empty docks in our studio. © Vacuum Wars

Battery efficiency 

We now also do a battery life efficiency test by making sure that each of the robots’ three runs is done using a different power setting: low power, max power, and what we call “best settings”. The best setting, in this case, was both robots’ second to lowest power setting with carpet boost turned on.

Here the Dreametech L10s Ultra was the winner and by a pretty good margin. We recorded an average of 2.3 minutes per battery life percentage point compared to 1.6 minutes with the Roborock S7 MaxV.

Roborock S7 MaxV Ultra vs Dreametech DreameBot L10s Ultra
Both robot vacuums have advanced obstacle avoidance systems. © Vacuum Wars

Obstacle avoidance

We also revamped our obstacle avoidance tests. We accomplished this by conducting four different categories of tests with the same objects.

Both robots did quite well, though the Roborock had a slightly better score than the DreameBot. This is mostly due to the DreameBot missing one of the smaller novelty pet waste obstacles in the test. It was able to recognize and avoid the others, however.

Obstacle Avoidance Testing - S7 MaxV Ultra vs Dreametech L10s Ultra
Imagery from our obstacle avoidance testing. © Vacuum Wars


We’ll actually cover both value and miscellaneous issues here. 

One miscellaneous note is that when we first bought the DreameBot L10s Ultra, it did not seem to lift up its mopping pads when it encountered carpeting, so it was getting the carpets wet – which is the exact opposite of what should be happening.

We sent the robot back to Dreametech and they sent us a fixed unit that did raise its pads. But, it still wasn’t nearly as good as the S7 MaxV at lifting up its mopping pad. We did dock the DreameBot points for that reason.

Dried on Stain Mop Testing - Roborock S7 MaxV Ultra vs Dreametech DreameBot L10s Ultra
Testing both robots mopping capability with dried on stains. © Vacuum Wars

We also gave the S7 MaxV a negative score because it got stuck under a couch in the navigation test a couple of times. Presumably, this is because of its slightly higher profile, but keep in mind that this could easily be addressed in the Roborock app using no-go lines.

We also give robot vacuums negative scores depending on their price. The higher the price, the more points we deduct. Since the Roborock is more expensive than the Dreametech it took the bigger hit.

The Roborock S7 MaxV Ultra and Dreametech L10s Ultra we purchased for this review
The Roborock S7 MaxV Ultra and Dreametech L10s Ultra we purchased for this review. © Vacuum Wars


After adding all the scores from all of our tests, the winner of our competition is the Roborock S7 MaxV Ultra. It beat out the Dreametech L10s Ultra. But, keep in mind that this is a really, really close result.

While we begin the process of retesting many of the robot vacuums Vacuum Wars has amassed over the years with our new system, we can already tell that these two scores are going to be way above average.

Roborock S7 MaxV Ultra

So, we think either of these robots would be a great buy. It is definitely worth looking over their features to see if there is something to sway you in one direction or the other, but based on our tests, the Roborock S7 MaxV Ultra still remains the king – at least for now!


DreameBot L10s UltraS7 MaxV Ultra
TypeVacuum & MopVacuum & Mop
Obstacle AvoidanceYesYes
Object RecognitionYesYes
Map StorageMultipleMultiple
Room CleaningYesYes
No-Go Zones/Virtual WallsYesYes
Max Cleaning Time210 min180 min
Auto EmptyYesYes
Mop Pad MaintenanceYesYes
Water Tank RefillYesYes
Amazon AlexaYesYes
Google AssistantYesYes
Voice ControlYesYes
Dreametech DreameBot L10s Ultra vs Roborock S7 MaxV Ultra. Data from manufacturer websites.

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