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Xiaomi S40 Facts: 172 Specifications & 100 Highlights

Get the facts before you unbox. The Xiaomi S40 robot vacuum features 172 key specs & features, with general information, dimensions & weight, navigation & mapping & cleaning performance topping the list.

72 Points
Xiaomi S40

Highlights 100

No extras. Just what matters.
72 Points

Why is Xiaomi S40 better than other robot vacuums ?

General Information

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Dimensions & Weight

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Navigation & Mapping

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Cleaning Performance

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Filtration & Dustbin

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Mopping System

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Power & Charging

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Smart Features & Connectivity

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Sensors & Safety

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Noise & Environment

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Accessories & Extras

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Maintenance & Service

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Quick Take

The essentials that matter—nothing extra

A fast snapshot of the Xiaomi S40, covering its standout specification and what you can expect right out of the box.

Xiaomi S40
Xiaomi S40

Xiaomi S40 is a wise robot vacuum cleaner that also functions as a mop, featuring an integrated cleaning system for vacuuming and mopping. It uses LDS laser navigation to map your home, avoids obstacles with sensors, and can be controlled remotely via the Xiaomi Home app. Key features include automatic charging, customizable cleaning schedules, and intelligent water control for mopping.

Specifications & Facts 172

Specs measured. Drama avoided.

From specs to pricing quirks, we reviewed the Xiaomi S40 robot vacuum and measured it up to other robot vacuums. Want the crowd verdict? It’s here.

General Information 8

Xiaomi S40 Target Audience

Who is this designed for?

63 Xiaomi S40 0 Votes Pet Owners, Large Homes, Small Apartments

62 Robot Vacuums in this range Pet Owners, Large Homes, Multi-Surface Households

Xiaomi S40
Xiaomi S40

This vacuum is ideal for pet owners, large homes, and small apartments due to its strong suction, smart navigation, and ability to handle various floor types.

Intended user base for the product.

Xiaomi S40 Product Name

What is the product name?

76 Xiaomi S40 0 Votes Xiaomi Robot Vacuum S40

65 Robot Vacuums in this range Shark Navigator Robot Vacuum

The official name of the robot vacuum.

Xiaomi S40 Model Number

What is the model number?

77 Xiaomi S40 0 Votes OV81

62 Robot Vacuums in this range G20

Unique identifier used for the vacuum model.

Xiaomi S40 Release Year

What year was it released?

100 Xiaomi S40 0 Votes 2025

65 Robot Vacuums in this range 2024

The year the robot vacuum was released.

Xiaomi S40 Color Options

What color options are available?

70 Xiaomi S40 0 Votes White

59 Robot Vacuums in this range Black

The available color finishes for the product.

Xiaomi S40 Finish Material

What is the finish material?

40 Xiaomi S40 0 Votes Plastic

51 Robot Vacuums in this range Plastic

The exterior build material or surface finish.

Dimensions & Weight 13

Xiaomi S40 Width

What is the width?

13.39 inch 0 Votes
Xiaomi S40
13.28 inch (Average)

Xiaomi S40
Xiaomi S40

The width of the Xiaomi S40 is approximately 34 cm, making it compact enough to fit under furniture while still maintaining strong cleaning performance.

The width of the robot vacuum.

Xiaomi S40 Depth

What is the depth?

13.39 inch 0 Votes
Xiaomi S40
13.39 inch (Average)

Xiaomi S40
Xiaomi S40

The depth is also 13.39 inches (34 cm), fitting with the robot's circular design for easy maneuvering around obstacles and corners.

The depth of the robot vacuum.

Xiaomi S40 Height

What is the height?

3.86 inch 0 Votes
Xiaomi S40
3.96 inch (Average)

Xiaomi S40
Xiaomi S40

With a height of 3.86 inches (98 mm), it can easily pass under most furniture, making it ideal for cleaning tight spaces like under sofas.

The height of the robot vacuum.

Xiaomi S40 Weight

What is the weight?

9.08 lbs 0 Votes
Xiaomi S40
8.58 lbs (Average)

Xiaomi S40
Xiaomi S40

Weighing 9.08 lbs (4.12 kg), it is lightweight for a robot vacuum, making it easy to handle during storage or when lifting it for spot cleaning.

The weight of the robot vacuum.

Xiaomi S40 Ground Clearance

What is the ground clearance?

0.79 inch 0 Votes
Xiaomi S40
1.01 inch (Average)

Xiaomi S40
Xiaomi S40

The vacuum's ground clearance of 0.79 inches (20 mm) allows it to navigate various surfaces and climb small obstacles, like thresholds and low carpets.

The clearance between the vacuum’s underside and the floor.

Xiaomi S40 Package Width

What is the package width?

17.32 inch 0 Votes
Xiaomi S40
15.84 inch (Average)

The width of the retail package.

Cleaning Performance 14

Xiaomi S40 Suction Power

What is the suction power?

10,000 Pa 0 Votes
Xiaomi S40
4,862.11 Pa (Average)

Xiaomi S40
Xiaomi S40

With a maximum suction power of 10000 Pa, the Xiaomi S40 can handle deep cleaning, effectively picking up dirt and debris from a variety of floor types.

Measures the vacuum’s suction strength.

Xiaomi S40 Auto Dirt Detection

Does it detect dirt levels?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Xiaomi S40
Xiaomi S40

The S40 detects dirt automatically, adjusting its suction power based on the amount of debris it encounters, optimizing cleaning efficiency.

Detects high dirt concentration areas.

Xiaomi S40 Max Carpet Height

What is the max carpet height?

0.79 inch 0 Votes
Xiaomi S40
0.87 inch (Average)

Xiaomi S40
Xiaomi S40

The vacuum can handle carpets up to 0.79 inches (20 mm) in height, making it suitable for most carpets and rugs commonly found in homes.

Maximum carpet thickness it can climb.

Xiaomi S40 Max Obstacle Height

What is the max obstacle height?

0.79 inch 0 Votes
Xiaomi S40
0.83 inch (Average)

Xiaomi S40
Xiaomi S40

The robot can climb over obstacles up to 0.79 inches (20 mm), making it capable of crossing over thresholds and small barriers in homes.

Maximum obstacle height it can climb.

Xiaomi S40 Max Suction Levels

How many suction levels are available?

80 Xiaomi S40 0 Votes 4

57 Robot Vacuums in this range 4

Xiaomi S40
Score History (3)

Updated at 2025-12-17 04:59:54: 0 Updated at 2025-12-22 08:34:24: 88 Updated at 2026-04-10 03:28:35: 85

Number of adjustable suction settings.

Xiaomi S40 Auto Boost on Carpet

Does it auto boost on carpet?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Increases suction when cleaning carpets.

Filtration & Dustbin 12

Xiaomi S40 Dustbin Capacity

What is the dustbin capacity?

17.58 oz 0 Votes
Xiaomi S40
23.18 oz (Average)

Xiaomi S40
Xiaomi S40

The dustbin has a capacity of 17.58 oz (520 mL), which is large enough for multiple cleaning sessions before needing to be emptied.

Maximum dustbin volume.

Xiaomi S40 Dustbin Position

Where is the dustbin positioned?

80 Xiaomi S40 0 Votes Top

58 Robot Vacuums in this range Top

Where the dustbin is located in the vacuum.

Xiaomi S40 Dustbin Material

What is the dustbin made of?

100 Xiaomi S40 0 Votes Plastic

63 Robot Vacuums in this range Plastic

Material used for dustbin construction.

Xiaomi S40 Auto Dustbin Lock

Does it have an auto dustbin lock?

No 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Prevents dust escape when removing bin.

Xiaomi S40 Bin Full Indicator

Does it have a bin full indicator?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Alerts when dustbin is full.

Xiaomi S40 Bag Type

What type of dust collection bag does it use?

70 Xiaomi S40 0 Votes Bagless

62 Robot Vacuums in this range Bagless

Type of dust collection system used.

Mopping System 18

Xiaomi S40 Water Tank Capacity

What is the water tank capacity?

9.13 oz 0 Votes
Xiaomi S40
13.92 oz (Average)

Xiaomi S40
Xiaomi S40

The water tank capacity is 9.13 oz (270 mL), offering enough water for mopping large areas without frequent refills.

Maximum volume of water tank.

Xiaomi S40 Water Flow Levels

How many water flow levels are available?

50 Xiaomi S40 0 Votes 3

59 Robot Vacuums in this range 3

Xiaomi S40
Xiaomi S40

It offers three adjustable water flow levels, allowing you to customize the mopping intensity depending on the floor type and cleaning needs.

Xiaomi S40
Score History (3)

Updated at 2025-12-17 04:59:54: 0 Updated at 2025-12-22 08:34:25: 85 Updated at 2026-04-10 03:28:35: 82

Number of adjustable water flow settings.

Xiaomi S40 Mopping Function

Does it support mopping?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Indicates whether the vacuum supports mopping.

Xiaomi S40 Y-Shaped Mopping Path

Does it use a Y-shaped path?

No 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Follows Y-pattern for scrubbing effect.

Xiaomi S40 Stain Removal Mode

Does it have stain removal mode?

No 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Special mode for tough stains.

Xiaomi S40 Water Tank Type

What type of water tank is used?

90 Xiaomi S40 0 Votes Electric Pump

52 Robot Vacuums in this range Electric Pump

Xiaomi S40
Score History (3)

Updated at 2025-12-17 04:59:54: 0 Updated at 2025-12-22 08:34:25: 83 Updated at 2026-04-10 03:28:35: 80

The system used to dispense water.

Power & Charging 17

Xiaomi S40 Battery Type

What type of battery does it use?

0 Xiaomi S40 0 Votes Li-Ion

49 Robot Vacuums in this range Li-ion

Xiaomi S40
Xiaomi S40

The S40 uses a Li-Ion battery, which provides a long lifespan and consistent performance during each cleaning session.

The type of battery used.

Xiaomi S40 Battery Capacity

What is the battery capacity?

5,200 mAh 0 Votes
Xiaomi S40
4,012.5 mAh (Average)

Xiaomi S40
Xiaomi S40

With a 5200 mAh battery, the S40 can run for up to 180 minutes, providing enough power for thorough cleaning across large areas.

Battery storage capacity.

Xiaomi S40 Max Runtime

What is the max runtime?

180 minutes 0 Votes
Xiaomi S40
150.29 minutes (Average)

Xiaomi S40
Xiaomi S40

The 180-minute runtime means it can clean most homes on a single charge, even those with multiple rooms or floors.

Maximum runtime per charge.

Xiaomi S40 Max Charging Time

What is the charging time?

3 hours 0 Votes
Xiaomi S40
7.85 hours (Average)

Xiaomi S40
Xiaomi S40

It takes approximately 3 hours to charge the S40, ensuring minimal downtime between cleanings.

Maximum charging time required.

Xiaomi S40 Dock Charging Power

What is the dock charging power?

24 Watt 0 Votes
Xiaomi S40
32.29 Watt (Average)

Xiaomi S40
Xiaomi S40

The dock uses 24 watts for charging, ensuring that the vacuum quickly returns to full charge after completing its cleaning cycle.

Charging power provided by dock.

Xiaomi S40 Dock Return Accuracy

What is the dock return accuracy?

95 % 0 Votes
Xiaomi S40
95.16 % (Average)

Xiaomi S40
Xiaomi S40

With a return accuracy of 95%, the robot easily finds its charging dock, ensuring it can recharge itself without assistance.

Accuracy of docking process.

Smart Features & Connectivity 26

Xiaomi S40 App Control

Does it have app control?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Can be controlled via smartphone app.

Xiaomi S40 Remote Control

Does it support remote control?

No 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Supports physical remote control.

Xiaomi S40 Voice Assistant Compatibility

Which voice assistants are supported?

85 Xiaomi S40 0 Votes Alexa, Google Assistant

62 Robot Vacuums in this range Alexa, Google Assistant

Compatible voice assistants.

Xiaomi S40 Wi-Fi Connectivity

Does it have Wi-Fi connectivity?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Connects to Wi-Fi network.

Xiaomi S40 Bluetooth Connectivity

Does it support Bluetooth?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Connects via Bluetooth.

Xiaomi S40 Multi-User Support

Does it support multi-user access?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Allows multiple users to access app.

Sensors & Safety 16

Xiaomi S40 Cliff Sensors

Does it have cliff sensors?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Detects stairs or drop offs to prevent falls.

Xiaomi S40 Edge Detection Sensor

Does it have an edge detection sensor?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Detects room edges for better cleaning.

Xiaomi S40 Bumper Sensors

Does it have bumper sensors?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Detects obstacles through physical contact.

Xiaomi S40 Infrared Sensors

Does it use infrared sensors?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Uses infrared for obstacle detection.

Xiaomi S40 Ultrasonic Sensors

Does it use ultrasonic sensors?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Uses sound waves for precise detection.

Xiaomi S40 Gyroscope Sensor

Does it have a gyroscope sensor?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Helps stabilize direction and mapping.

Noise & Environment 8

Xiaomi S40 Noise Level

What is the noise level?

60 dB 0 Votes
Xiaomi S40
62.25 dB (Average)

Xiaomi S40
Xiaomi S40

The noise level is around 60 dB, which is quieter than a typical vacuum, making it suitable for cleaning during the day without disturbing your household.

Average operating sound level.

Xiaomi S40 Power Consumption Cleaning

What is the cleaning power consumption?

70 Watt 0 Votes
Xiaomi S40
38.16 Watt (Average)

Xiaomi S40
Xiaomi S40

The S40 consumes 70 watts while cleaning, a reasonable energy consumption that balances performance with energy efficiency.

Energy consumed while cleaning.

Xiaomi S40 Quiet Mode

Does it have quiet mode?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Special mode to reduce noise output.

Xiaomi S40 Energy Star Certification

Is it Energy Star certified?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Certified for energy efficiency.

Xiaomi S40 Power Consumption Standby

What is the standby power consumption?

2 Watt 0 Votes
Xiaomi S40
4.13 Watt (Average)

Energy consumed while idle.

Xiaomi S40 Power Consumption Charging

What is the charging power consumption?

24 Watt 0 Votes
Xiaomi S40
30.85 Watt (Average)

Power used while charging.

Accessories & Extras 11

Xiaomi S40 Extra Filters

How many extra filters are included?

10 Xiaomi S40 0 Votes None

49 Robot Vacuums in this range 1

Number of spare filters in the package.

Xiaomi S40 Extra Brushes

How many extra brushes are included?

55 Xiaomi S40 0 Votes 1

50 Robot Vacuums in this range 1

Number of spare brushes in the package.

Xiaomi S40 Extra Mop Pads

How many extra mop pads are included?

50 Xiaomi S40 0 Votes 1

46 Robot Vacuums in this range None

Number of spare mop pads in the package.

Xiaomi S40 Extra Mop Cloths

How many extra mop cloths are included?

0 Xiaomi S40 0 Votes None

43 Robot Vacuums in this range None

Number of additional mop cloths included.

Xiaomi S40 Extra Dust Bags

How many extra dust bags are included?

20 Xiaomi S40 0 Votes None

49 Robot Vacuums in this range None

Number of spare dust bags provided.

Xiaomi S40 Extra Battery

Is an extra battery included?

No 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Whether an additional battery is included.

Maintenance & Service 12

Xiaomi S40 Filter Replacement Indicator

Does it have a filter replacement indicator?

No 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Notifies when filter needs replacing.

Xiaomi S40 Brush Replacement Indicator

Does it have a brush replacement indicator?

No 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Notifies when brush needs replacing.

Xiaomi S40 Self-Cleaning Brush

Does it have a self-cleaning brush?

No 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Main brush can automatically clean itself.

Xiaomi S40 Washable Filter

Is the filter washable?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Filter can be washed instead of replaced.

Xiaomi S40 Washable Mop Cloth

Is the mop cloth washable?

Yes 0 Votes Xiaomi S40

Yes Robot Vacuums in this range

Mop cloth can be washed and reused.

Xiaomi S40 Filter Lifetime

What is the filter lifetime?

3 months 0 Votes
Xiaomi S40
5.57 months (Average)

Expected lifespan of the filter.

Surveys

Because hot takes deserve votes.

Xiaomi S40 Cleaning Performance

How would you rate the cleaning performance of this robot vacuum?

Excellent — Picks up all debris and cleans every corner with ease. 0 Votes
Very Good — Cleans most areas with minor spots left. 0 Votes
Good — Cleans effectively, but some areas need a little attention. 0 Votes
Fair — Leaves debris in some areas and may require additional cleaning. 0 Votes
Poor — Struggles to clean and leaves significant debris behind. 0 Votes

Xiaomi S40 Battery Life

How would you rate the battery life of this robot vacuum?

Excellent — Runs for 2+ hours on a single charge. 0 Votes
Very Good — Runs for 1.5 to 2 hours on a single charge. 0 Votes
Good — Runs for 1 to 1.5 hours on a single charge. 0 Votes
Fair — Runs for 30 to 60 minutes on a single charge. 0 Votes
Poor — Runs for less than 30 minutes on a single charge. 0 Votes

Xiaomi S40 Noise Level

How would you rate the noise level of this robot vacuum?

Very Quiet — Barely noticeable even in a quiet room. 0 Votes
Quiet — Slightly noticeable but not disruptive. 0 Votes
Average — Noticeable and can be a bit distracting. 0 Votes
Loud — Noticeable and bothersome in quiet spaces. 0 Votes
Very Loud — Distracting and uncomfortable to be around. 0 Votes

Xiaomi S40 Ease of Setup

How easy was it to set up this robot vacuum?

Very Easy — Set up was quick and intuitive with no issues. 0 Votes
Easy — Simple setup with minimal guidance needed. 0 Votes
Average — Took a bit of time but manageable with instructions. 0 Votes
Difficult — Had trouble setting it up and needed assistance. 0 Votes
Very Difficult — Setup was complicated and confusing. 0 Votes

Xiaomi S40 Design Appeal

How would you rate the design and appearance of this robot vacuum?

Stylish — Sleek, modern design that fits well in any room. 0 Votes
Attractive — Looks good and suits most home styles. 0 Votes
Neutral — Basic design that doesn't stand out. 0 Votes
Unattractive — Design feels bulky or outdated. 0 Votes
Poor — Design is unappealing and doesn't blend well in the home. 0 Votes

Xiaomi S40 Pricing

How would you rate the value for money of this robot vacuum?

Great value for money — You get more than what you paid for. 0 Votes
Pretty good price — Worth the price for the features. 0 Votes
Fair deal — Reasonable for what it offers. 0 Votes
Kinda pricey — Expensive for what it does. 0 Votes
Crazy expensive — The price is too high for the features offered. 0 Votes

Xiaomi S40 Cleaning Modes

How would you rate the variety and effectiveness of cleaning modes?

Excellent — Multiple modes that work well for different floor types and needs. 0 Votes
Very Good — Several modes that cover most cleaning situations. 0 Votes
Good — Few modes, but they get the job done. 0 Votes
Fair — Limited modes and may require manual intervention. 0 Votes
Poor — Only one cleaning mode, insufficient for all needs. 0 Votes

Xiaomi S40 Navigation and Mapping

How would you rate the robot vacuum’s navigation and mapping ability?

Excellent — Very precise, maps entire home, avoids obstacles effectively. 0 Votes
Very Good — Maps large areas with few obstacles. 0 Votes
Good — Navigates well but occasionally bumps into things. 0 Votes
Fair — Struggles with navigation and often misses areas. 0 Votes
Poor — Poor at mapping or getting stuck frequently. 0 Votes

Xiaomi S40 App and Smart Features

How would you rate the app and smart features of this robot vacuum?

Excellent — Easy to use app with great features like scheduling, remote control, and updates. 0 Votes
Very Good — App is functional with scheduling and cleaning status features. 0 Votes
Good — App works, but lacks advanced features. 0 Votes
Fair — App is limited and occasionally buggy. 0 Votes
Poor — App is difficult to use or doesn’t work properly. 0 Votes

Xiaomi S40 Durability and Build Quality

How would you rate the durability and build quality of this robot vacuum?

Excellent — Sturdy construction, feels premium, and built to last. 0 Votes
Very Good — Well-built, feels solid with no major issues. 0 Votes
Good — Decent build quality but feels a bit flimsy at times. 0 Votes
Fair — Some parts feel weak or cheaply made. 0 Votes
Poor — Fragile and prone to damage from regular use. 0 Votes

Guides 1

Yes, we brought proof.

Articles 1

Xiaomi S40 User Manual

Xiaomi S40 User Manual

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mi.com

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