Roborock Q Revo vs. S7 MaxV Ultra

Continuing my series on the latest Roborock products, we’ll compare the Q Revo and S7 MaxV Ultra.

These robots are part of Roborock’s expanding portfolio of self-emptying robot vacuums.

Both offer similar features, but the designs of these models differ, and we’ll see how these differences will affect your decision on which option to consider.

I’ve spent many hours testing these products to help you (the consumer) make an informed decision to reduce the risk of buyer’s remorse. So let’s get started.

An Overview of the Roborock Q Revo and S7 MaxV Ultra

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Introduction to the Roborock Q Revo and S7 MaxV Ultra

The Roborock Q Revo and S7 MaxV Ultra represent two different models targeting a specific consumer segment.

The S7 MaxV is a premium flagship option with Roborock’s (then) latest technology, while the Q Revo caters to more budget-conscious shoppers who don’t want to spend a hefty premium for a do-it-all product.

More Tech, Higher Cost: Roborock S7 MaxV Ultra

Pros

• A cheaper option than the S8 Pro Ultra with similar performance
• Versatile base station with pad-washing and self-emptying features
• Above-average obstacle avoidance
• CCTV functionality
• Efficient navigation and debris pick up
• Easy access to the robot’s dustbin

Cons

• Expensive
• Below average at deep cleaning carpets
• Wide base station
• Smaller water tanks than the Q Revo

The Roborock S7 MaxV Ultra bridges the older S7-Series options and the current batch of premium self-emptying options.

Please watch this video for a comprehensive review and to see this robot in action.

This model takes the S7+ and expands its functionality, adding a pad-washing feature to its arsenal of convenience automation.

It also brings back the Roborock “Vision” feature with better obstacle avoidance thanks to the additional laser sensors.

Utilizing a twin-lens camera adds to its functionality as a CCTV camera, and what I like about the S7 MaxV Ultra is its full integration into the primary interface.

I haven’t seen this type of integration in other brands, doubling the function of this robot as a stealth surveillance tool inside homes if you’re away.

Aiding its function is a bright LED, illuminating its path, so it’ll function inside poorly lit areas.

Thanks to the sonic feature in its mopping module, it’s also one of the best options.

It didn’t stall even on tough-to-mop juice stains on tiled surfaces.

The S7 MaxV base station is massive, with the water tanks and bag in one row.

One downside to putting everything in one area is the lower capacity.

The S7 MaxV clean and dirty water tanks only have three and two-point five-liter volumes, almost 50% less than the Q Revo’s massive 5-liter containers.

With its below-average airflow, the S7 MaxV cleaning performance is better on hard floors and decent on picking surface debris on carpets but below average with embedded dirt.

Cheaper Alternative: Roborock Q Revo

Pros

• Cheaper alternative to the S7 MaxV Ultra and S8 Pro Ultra
• Larger water tanks (5 liters each)
• More airflow
• Proficient mopping thanks to the 200rpm pads
• Above-average cleaning performance on hard floors
• Efficient navigation

Cons

• Below-average deep cleaning
• The bristled side brush wears out faster than the all-rubber side brush
• Obstacle avoidance is not as good as the S7 MaxV Ultra

Watch this video for the full review on YouTube and to see the Q Revo in action.

The Q Revo is Roborock’s best mid-priced option, better than the Q5 and Q7 since it has two spinning discs and a pad-washing feature.

Periodically, there are discounts, pushing the price down further, so if you see these, it’s an excellent time to purchase one.

Its design departs from the S7 MaxV and S8 Pro Ultra framework and utilizes a more common two-disc system found in brands like Dreame and Ecovacs.

Before reviewing it, I doubted whether this design would be as good as the S7 MaxV Ultra, but after thorough tests, I’m blown away by the results.

Roborock says that the Q Revo discs spin at 200 rpm, 20 rpm faster than the Dreame L10S Ultra, which is a factor why it was efficient.

It uses the same single brush roll as the S7 MaxV with the same bristle-less design.

The Q Revo’s cleaning performance is superb on hard floors since it has above-average airflow (over 17 CFM), but isn’t as good at cleaning carpets.

Like the S7 MaxV Ultra, it also has obstacle avoidance with the IR sensor but doesn’t have any lasers to augment its obstacle detection prowess.

Even with the lasers, it was good at avoiding objects big enough for the IR sensor to detect.

I wouldn’t rely on it to evade high-risk objects like stretched wires and pet feces.

Also, it didn’t avoid this weighing scale.

Despite these shortcomings, the Q Revo’s cleaning, efficient navigation, and mopping performance more than make for these.

The clincher for me is the price since it’s nearly half the price of the S7 MaxV Ultra without too much feature loss.

It’s one of the best value options available.

Similarities of the Roborock Q Revo and S7 MaxV Ultra

Next, we’ll examine the similarities of these intelligent robot vacuums, starting with LIDAR.

1. Navigation

Both options use LIDAR (or laser distance sensor) as the primary navigational sensor to track location.

I like this over a camera-based system because it’s more precise and works even in pitch-dark conditions.

These robots will start the run, cleaning the edges before towards the middle portion in the back-and-forth pattern.

One downside with LIDAR robots is the protrusion on top of the robot, adding to its height so that it won’t fit underneath low-clearance furniture.

2. Hybrid Functionality

The next similarity is their hybrid functions. Both are usable as a robot vacuum and mop with pad-washing and self-emptying features.

However, the mopping systems vary, which we’ll discuss in the next section (differences).

3. Brush Roll Design

The Roborock Q Revo and S7 MaxV Ultra share the same brush roll design, which is interchangeable.

I like this design over the combo brush since hair doesn’t wrap tightly around it, making it easier to dislodge.

4. Self-Emptying and Pad Washing

Another similarity is the versatile base stations with pad-washing and self-emptying features.

However, the designs of the base stations are different. The Q Revo has a larger dock since it uses bigger water tanks (five liters each), while the S7 MaxV base station is shorter but a bit wider.

Differences Between the Roborock Q Revo and S7 MaxV Ultra

Next, we’ll discuss the differences between the Roborock Q Revo and S7 MaxV Ultra, starting with the obstacle avoidance sensors.

1. Obstacle Avoidance Sensors

While these robots can evade obstacles, their sensors vary.

The S7 MaxV Ultra uses a twin-lens camera flanked by laser sensors, doubling its function as a CCTV camera since it has a lens. Hence the “V” designation.

The Q Revo relies on an IR sensor without lasers aiding it to identify objects.

Despite not having the help of laser sensors, the Q Revo evaded most of the obstacles, the S7 MaxV can, but it struggled with two specific objects during experiments: stretched wires and a weighing scale.

You’ll notice in the screenshot above the Q Revo side brush is tangled on a loosely wrapped wire.

I wouldn’t recommend relying on the robot to evade these objects since the risk of tangling is high.

While it can evade pet feces, it still gets too close, and the side brush or frame will likely touch these.

The S7 MaxV Ultra is better at identifying obstacles and immediately registering on the app.

It’s better at evading coiled wires, evading them with better consistency, and it avoids the weighing scale.

2. Mopping Pad Design

Another variance is the pad design and scrubbing elements.

The Q Revo uses two spinning discs that rotate at 200 rpm to remove stains, and the S7 MaxV Ultra has one vibrating element in the middle for the same purpose.

Despite the differences, both efficiently remove stains, only needing one pass to clean everything.

3. Side Brush

The Roborock Q Revo uses the three-pronged, bristled-tip side brush, while the S7 MaxV Ultra has the five-pronged, all-rubber version.

I don’t see any variance with cleaning performance, but the all-rubber version offers better durability and is easier to clean (in my opinion).

4. Water Tank Capacity

With the differences in base station design, there’s a massive disparity in water tank volume.

The S7 MaxV Ultra has a smaller water tank. According to Roborock, the clean water tank can hold up to 3 liters, and the dirty tank has a 2.5-liter capacity.

That’s nearly a 50% volume difference.

The Q Revo with the taller base station has a five-liter capacity for each tank, so there’s no need to refill or empty it as often.

5. Bag Volume and Location

The Roborock Q Revo has a slightly larger bag capacity at 2.7 liters or 0.2 more than the S7 MaxV Ultra (2.5 liters), but it sits underneath the two water tanks.

The S7 MaxV bag is beside the clean water tank with little drop-off in volume.

6. Pad-Cleaning Module

The pad-washing modules of these robot vacuums vary greatly – the Q Revo has a simpler design using a tray with studs around strategic areas to scrub against the pads, while the S7 MaxV Ultra has a more complex design.

It uses a bristled brush component attached to an arm that moves from side to side for agitation.

App Features

All Roborock robot vacuums are compatible with the Roborock app, and I’ll enumerate the most helpful features.

1. Live Map

One game-changing feature Roborock introduced (they were under Xiaomi before) is the live map feature, where consumers can see the robot’s location in real time through the app.

It helps track the robot’s status during the cleaning cycle and where it is on the map.

During the S7 MaxV and Q Series releases, Roborock added another sub-feature they call the 3D map, which shows it from a three-dimensional perspective from different angles.

2. Mapping Run

Another helpful feature in these two models is the mapping run, fast-tracking the map creation process.

It takes advantage of LIDAR’s 360-degree scanning ability to cut down the process tenfold (I’m exaggerating, but the difference is significant).

Consumers don’t need to wait long before setting up the map, adding partitions, and more.

And the software is good enough to detect doorways, automatically creating partitions for these areas.

3. Map Saving

Consumers can save up to four map levels and customize each level by adding containment, custom room names, and more.

4. Containment

Containment is available for the Q Revo and S7 MaxV Ultra through no-go zones, no-mop zones, and invisible wall features.

The first two are similar in that they block the robot from entering a boxed or rectangular area, while the invisible wall acts as a “wall,” blocking the robot from going past it.

One advantage of an invisible wall is it can block diagonal areas, something impossible with a no-go zone (or no-mop zone).

I think the no-mop zone feature is redundant since these robots have carpet detection features that enable them to avoid carpets or rugs.

5. Thresholds

I noticed this feature in the Q Revo, where the app enables users to add thresholds with a function similar to the invisible wall feature.

So why add this feature if it’s the same as the invisible wall?

Probably to help consumers organize the maps better and identify thresholds better on the map.

6. Obstacle Detection

The app also provides obstacle data for reference to consumers. It’s more useful in the S7 MaxV Ultra since the camera takes snapshots of the objects and stores them in the cloud.

The Q Revo doesn’t have this nuance and only shows cones, no matter what object it detects.

7. CCTV Function (S7 MaxV Ultra only)

One advantage of a camera-based front sensor is it doubles as a CCTV, allowing users to monitor their homes (yes, even remotely).

And the Roborock app has the best implementation of this feature since you can use it while the robot is doing its cleaning cycle.

8. Selective Room Cleaning

The next feature we’ll look at is selective room cleaning, where folks can ask the robot to clean a specific room on the map.

This app feature is handy if you want the robot to prioritize cleaning high-traffic areas. Users can select multiple rooms and set the order.

The selective room cleaning feature also unlocks the multiple pass run (up to three), adding an element of thoroughness if needed.

9. Zoned Cleaning

Zoned cleaning is a variation of the selective room cleaning feature, enabling users to specify an area within a room (or rooms) that the robot will vacuum or mop.

Unfortunately, the Roborock app cannot save these areas, so you must draw these again if you need to clean the same area.

Navigation Comparison

Since the Roborock Q Revo and S7 MaxV Ultra use LIDAR, their navigational pattern is similar.

They start the run by cleaning the edges before transitioning to the middle areas in a back-and-forth motion.

You could superimpose the footage and not notice any difference.

Turning on the multi-pass run will unlock the crisscross pattern.

Both options are efficient during the coverage test, completing the two-pass run in around 18 minutes.

Here’s a before and after shot for the Q Revo.

And the S7 MaxV Ultra.

Another similarity between these robots is the efficiency, as both picked up most of the debris after the first pass.

Impressive results, more so for the Q Revo since it’s the cheaper option.

Obstacle Avoidance

While the Roborock S7 MaxV Ultra and Q Revo have front obstacle sensors, these vary.

The S7 MaxV Ultra uses Roborock’s ReactiveAI tech, with a twin-lens camera flanked by lasers, while the Q Revo only has an IR sensor.

There are a few advantages to the S7 MaxV’s “Vision” system.

First is better accuracy at identifying objects since the two lasers help it pinpoint the exact obstacle from its database.

Second, it doubles as a surveillance camera, helping consumers remotely monitor their homes.

The enhanced accuracy enables the S7 MaxV Ultra to avoid a weighing scale and even toys better than the Q Revo.

It also avoids stretched wires at a higher percentage, but I wouldn’t depend on the AI since it (still) gets too close.

The Q Revo is decent, but it tangled on stretched wires. Every. Single, Time.

Also, it climbed over the weighing scale repeatedly.

Airflow Comparison

Next, we’ll look at the airflow comparison, where I use an anemometer to check how much air passes through the brush roll.

Another surprise for these experiments is the results, where the Q Revo was better.

It had (up to) 17.91 CFM in the highest power setting, more than 20% more than the S7 MaxV’s output of 13.39 CFM.

Unfortunately, this advantage didn’t do much in the cleaning experiments (more below) since the S7 MaxV got better scores.

Cleaning Comparison

I tested both robots on different debris types, from sand to hair, and here are the results.

The S7 MaxV Ultra got higher overall scores and picked up more debris in nearly every experiment.

Since both use the same brush roll, I’m unsure why, but only the S7 MaxV has a floating brush that keeps constant contact with the surface since it pivots in all directions.

Which Option is Better on Hard Floors?

One metric I use to determine hard floor cleaning viability is how much sand it picks up.

And based on this, these robots are even since both got the same percentage – 99.6%.

However, the S7 MaxV Ultra got (slightly) better results in the other surface debris experiments – 99.95% vs. 99.75%.

Edge Cleaning

These robot vacuums have nearly identical edge-cleaning results, with a slight edge going to the Q Revo.

Here’s a before and after shot for the Roborock S7 MaxV Ultra.

And the Q Revo.

However, the lack of airflow hampers its ability to pick up debris from the quarter-inch crevice. So don’t expect these robots to clean these areas.

Hair Wrap Comparison

Another surprising result (for me) looking at the numbers is the hair wrap experiment.

The Roborock S7 MaxV Ultra was better, getting a 100% and 63% score on five and seven-inch hair strands, compared to the 24.5% pick up of the Q Revo (in the five-inch test).

If you need something for cleaning hair or even pet hair, the S7 MaxV Ultra is the better option.

Which Option is Better on Carpets?

There is a slight edge to the Roborock S7 MaxV Ultra because it has higher averages in the surface (98.97% vs. 98.17%) and embedded debris (77.95% vs. 76.35%).

Again, these are surprising results since the Q Revo has more airflow.

But this confirms my hunch that the S7 MaxV Ultra’s floating brush roll is a significant reason it was better in these experiments.

Mopping Comparison

One potential deciding factor for consumers is the mopping modules since these have (albeit small) financial implications.

The Q Revo utilizes a simpler design with fewer moving components, relying on a one-piece tray with studs for agitating the two pads.

The S7 MaxV Ultra has a more complex system with a brush mounted on a contraption that moves from side to side to scrub the pad.

More moving components means more stuff can break, and you’ll need to replace the brush once it wears out.

Surprisingly, the Q Revo is efficient with pad washing since it cleans it nicely.

With mopping performance, these robots have (nearly) identical results.

I tested both using red wine and juice stains with these results.

Here’s a before and after shot of the S7 MaxV (red wine).

And the Q Revo.

Here are the results for juice stains – first, the S7 MaxV Ultra (I used Coke stains for the test, which are also sticky).

And the Q Revo (grape and prune juice stains).

Even with stick stains, these robots didn’t stall, which is a problem with other brands without an agitating element.

This capability gives these machines a significant advantage since they can handle food-based blemishes.

However, since these machines can’t pick up liquid, I don’t recommend using it on large liquid spills.

Run Time Comparison

Since both robots use the same 5200 mAh lithium-ion battery, there isn’t much variance in run time.

Both will run for up to 180 minutes in the lowest power setting. With the mapping run and efficient navigation, the S7 MaxV Ultra and Q Revo can handle even large homes without recharging often.

Noise Comparison

Maintenance

All robot vacuums require maintenance to function at their peak for years. I’ll enumerate the components needing cleaning or replacing and the suggested intervals.

1. Brush roll: Easily the most abused component. Clean it weekly to remove hair and dust accumulation, especially on the axles.
2. Side brush: Another hair magnet that needs weekly cleaning. Use a Philips screwdriver to loosen the bolt to detach and clean. Remove any hair wrapped on the base or the arms. Use a damp microfiber towel to wipe any residue sticking to the surface.
3. Dustbin and filter: There’s no need to empty the dustbin if you’re getting the models with the base station, but you’ll need to check and clean it monthly, plus the filters. Tap it on a solid surface to dislodge dirt trapped in the folds.
4. Drop sensors: Wipe them with a clean microfiber towel or soft paper towel to remove any residue on these sensors.
5. Bag: Check the bag monthly to see if it’s full.
6. Front sensors: Use a clean microfiber towel to wipe these sensors monthly.
7. Dirty water tank: Dispose of the contents of the dirty water tank after every mopping cycle (if possible) to prevent odor from building up.
8. Auto-empty port: Ensure this slot is free from any debris that could potentially block and hamper the self-emptying function.

Parts Availability

Roborock’s growing popularity means more parts availability, at least with consumables like filters and brushes.

You can purchase these from Roborock or third-party manufacturers.

There are sets available for those who want to buy in bulk and save some money.

Search for “Roborock filters” or whatever component you need for the latest results.

However, parts like batteries or a side brush motor may be harder to find.

Product Specifications

Model	Roborock Q Revo	Roborock S8 Pro Ultra
Width	13.77"	13.89"
Height	3.79"	3.79"
Filter	Washable E11 Rated Air Filter	Washable E11 Rated Air Filter
Navigation	Smart Navigation	Smart Navigation
Run time	180 mins.	180 mins.
Recharge and Resume	Yes	Yes
Map Saving	Yes	Yes
Number of Maps	4	4
Dustbin capacity	350 ml	350 ml
Clean Water Tank	5 liters	3 liters
Dirty Water Tank	5 liters	2.5 liters
Water tank (inside robot)	80 ml	200 ml
Auto empty capacity	2.7 liters	2.5 liters
Airflow	17.91 CFM	11.33 CFM
Warranty	1-year limited	1-year limited
Price	Check Price	Check Price

Where Can I Buy These Robot Vacuums

The Roborock Q Revo and S7 MaxV Ultra are available in online stores like Amazon. Check the links below for more information.

• Roborock S7 MaxV (robot only) on Amazon
• Roborock S7 MaxV Ultra (robot + self-cleaning dock) on Amazon
• Roborock Q Revo on Amazon

Disclaimer: I will earn a commission if you purchase through any of the links above, but at no extra cost, so it’s a win-win for us!

Which Option is Better?

Despite the design variations, the Roborock Q Revo and S7 MaxV Ultra are close in their features and performance.

Both are efficient with vacuuming and mopping, offering consumers a robot that can do both tasks well.

I’d highly recommend either on hard floors. These robots will perform decently on carpets, but don’t expect deep clean carpets since these aren’t built for heavy-duty carpet cleaning tasks.

So, cleaning performance or navigation shouldn’t be a deciding factor, but what is?

I’ll enumerate a list for each model below.

3 Reasons to Choose the Q Revo

1. Cheaper Option: The Q Revo is much cheaper than the S7 MaxV Ultra and priced near the mid-level mark, very close to other brands with one base station function.
2. Less Maintenance: Its mop cleaning module is simpler yet more efficient at removing pad residue.
3. Larger Water Tanks: The 5-liter tanks double the S7 MaxV Ultra capacity.

3 Reasons to Choose the S7 MaxV Ultra

1. Better Obstacle Avoidance: The S7 MaxV Ultra has better obstacle avoidance because it has more sensors aiding the twin-lens camera, so it identifies objects better.
2. CCTV Function: Another benefit of the twin-lens camera is its CCTV functionality, enabling this robot to be a stealth surveillance camera.
3. More accessible Dustbin Access: Since the S7 MaxV Ultra is parked facing forward, consumers will have easier access to the dust receptacle.

The Verdict: Are The Premium Features Worth It?

The S7 MaxV Ultra has several distinct advantages over the Q Revo.

These include its hair-cleaning performance, obstacle avoidance, and surveillance features absent in its cheaper sibling.

If these features are of high priority, consider the S7 MaxV Ultra, otherwise the Q Revo is an excellent less expensive alternative that cleans nearly as well.