Robot Vacuum S40C
A robot that vacuums and mops with a flat pad. Its dock charges it and does nothing else.
Vacuum and mopPrice band: Under $500
Against the other 40 robots
Where it sits in our list
Suction5,000 Pa
4,000 PaFurther right pulls harder.36,000 Pa
Height9.7 cm
7.2 cmFurther left fits under lower furniture.12 cm
Step it climbs2 cm
2 cmFurther right gets over taller door sills.4.8 cm
Checked 11 November 2026
The spec sheet
Each number shows where we read it. Open a row to see the words it came from. "Not stated" means we couldn't find the number on the brand's page or the listing.
What the dock does
- Empties the binNo
- Washes the mopNo
- Dries the mopNo
- Refills the waterNo
- Adds detergentNo
What it doesVacuums and mopsThe brand's own page
What the page says"delivering more efficient precise vacuuming and mopping to each area"
Suction5,000 PaThe brand's own page
The most it can pull, on its strongest setting.
What the page says"the fan can reach a maximum vacuum degree of 5,000Pa"
Finds its way byLaser (LiDAR)The brand's own page
What the page says"LDS laser navigation for precise mapping and expert navigation"
Spots clutter withNot stated
A front sensor for cables, socks and toys.
We leave a blank where we can't confirm a number.
MopFlat padThe brand's own page
What the page says"Mop and water tank assembly x1 (Mop pad installed)"
Mop lifts on carpetNot stated
We leave a blank where we can't confirm a number.
Climbs a step of2 cmThe brand's own page
One step, like a door sill.
What the page says"the vacuum can traverse vertical steps up to 20mm in height"
Height9.7 cmThe brand's own page
Check it against the gap under your furniture.
What the page says"Dimensions 340 x 340 x 97mm"
Battery2,600 mAhThe brand's own page
What the page says"Battery Capacity 2,400mAh (rated capacity) 2,600mAh (nominal capacity)"
Longest runNot stated
The brand's longest figure, on a gentle setting.
We leave a blank where we can't confirm a number.
Bin in the robot520 mlThe brand's own page
What the page says"520 mL* Dustbin"
Dust bag in the dockNo bag
More details
Side brushOne side brushThe brand's own page
What the page says"Side brush x1"
Water tank (robot)260 ml, three water levelsThe brand's own page
What the page says"The measurement results showed that the capacity of the clean water tank is 260mL"
Weight3.44 kg (robot)The brand's own page
What the page says"Net Weight 3.44kg"
Dock size130 x 121 x 95 mm (charging dock only)The brand's own page
What the page says"Charging Dock Product Model E101CDZ Rated Input 20V⎓ 0.6A Rated Output 20V⎓ 0.6A Dimensions 130 x 121 x 95mm"
App and voiceXiaomi Home app; works with Alexa and Google AssistantThe brand's own page
What the page says"Voice control is compatible with Amazon Alexa and Google Assistant"
Suction levelsFour: silent, standard, strong and turboThe brand's own page
What the page says"Silent mode Minimise noise during nighttime use Standard mode Daily cleaning Strong mode Dust particles removal Turbo mode"
MappingZoned cleaning, virtual walls and restricted areas set in the appThe brand's own page
What the page says"Selected area cleaning Zoned cleaning Virtual walls and restricted areas"
