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Dreame L40s Ultra

DreameRobot vacuum

L40s Ultra

Released August 2025.2Press releasedreametech.com/blogs/news/dreame-l40s-series-robot-vacuum-launchRead 15 October 2026Launch article dated 2025-08-13 says the L40s Series is available now in the US through the Dreame website and Amazon Last checked 16 October 2026.

Suction
19,000Pa
Mop type
Spinning pads
Base station
Auto-empty and mop washing
Height
97mm

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At a glance

All specs

SourceCalculated

General

Series
L Series1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Listed in the L Series menu of the Dreame US store. The L40s family has three models, L40s Ultra, Ultra AE and Ultra CE, with different hardware
Model numbers
RLL22SE, 010204AA000742, 010204AA0008231Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026US store SKUs 010204AA000742 (White) and 010204AA000823 (Black). RLL22SE is the robot model code from SmartHomeCompared and a reseller copy of the user manual. No maker page states it8Spec databasesmarthomecompared.com/robot-vacuums/dreame-l40s-ultraRead 15 October 2026SmartHomeCompared lists Model RLL22SE and Launch Year 2025
GTIN / EAN
00850070805063, 008500708050701Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Barcodes 00850070805063 (White) and 00850070805070 (Black) in the US store variant data
Announced
13 August 20252Press releasedreametech.com/blogs/news/dreame-l40s-series-robot-vacuum-launchRead 15 October 2026Article date 2025-08-13
Status
Available2Press releasedreametech.com/blogs/news/dreame-l40s-series-robot-vacuum-launchRead 15 October 2026Sold at the Dreame US store and Amazon in October 2026
Predecessor
Not available
Successor
Not available
Launch price (US)
$1,399.991Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026US store regular price $1,399.99, sale price $569.99. Excludes tax2Press releasedreametech.com/blogs/news/dreame-l40s-series-robot-vacuum-launchRead 15 October 2026L40s Ultra MSRP $1,399.99. L40s Ultra AE $1,099.99 and CE $899.99
Launch price (EU)
Not available
Markets
US1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026US store
Colours
White, Black1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Variant options White and Black

Suction and brushes

Max suction (claimed)
19,000Pa1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 202619,000Pa Vormax suction, in-house lab data
Suction power (claimed)
Not available
Main brushes
21Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026The HyperStream Detangling DuoBrush has two rolls, a bristled rubber brush and a TPU rubber brush. The maker's comparison blog calls them counter-rotating rollers
Main brush material
Rubber and bristle1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Rubber brush with bristles plus a TPU all-rubber brush
Main brush (as published)
HyperStream Detangling DuoBrush1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026
Main brush lift
No1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026The comparison table marks Main Brush Lifting absent for the L40s Ultra and present for the AE and CE. The spec table has no such row. The comparison blog says the mops lift and the brush stays down
Side brushes
11Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026The in-box list has one side brush. The maker's comparison blog says all L40 models use one side brush
Extending side brush
Yes1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table: Side Brush Extending yes
Side brush lift
Yes1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table: Side Brush Lifting yes
Max carpet pile (claimed)
Not available
Robot dustbin
310mL1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table: Dust Box Capacity 310ml. The comparison table says at least 300ml
Filter
Not available
Washable filter
Not available

Navigation and obstacles

Navigation
Lidar turret1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table: Pathfinder Smart Navigation. The comparison table lists navigation LDS, a laser distance sensor. The height of 97 mm includes the turret, as for the other L Series models
Navigation system (as published)
Pathfinder Smart Navigation (LDS)1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026
Obstacle sensors (as published)
Single-Laser 3D Structured Light (3DAdapt)1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Comparison table: Single-Laser 3D Structured Light. The spec table says 3D Structured Light
AI object recognition
No1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Comparison table: the L40s Ultra has single-laser structured light only, with RGB AI listed for the AE. The maker's comparison blog says it detects obstacles by shape and depth without identifying them
Object types recognized (claimed)
Not available
Dirt detection
No1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Comparison table: Dirt Detection and AI Dirt Detection are marked absent for the L40s Ultra
Max threshold (claimed)
22mm1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 20260.87 in (22 mm) single-layer step with the auxiliary wheels. In-house lab data2Press releasedreametech.com/blogs/news/dreame-l40s-series-robot-vacuum-launchRead 15 October 2026Footnote: for a single-layer step the maximum height is 22mm
Max two-step threshold (claimed)
40mm1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 20261.57 in (40 mm) double-layer step where the gap between the two layers is more than 1.18 in (30 mm). In-house lab data2Press releasedreametech.com/blogs/news/dreame-l40s-series-robot-vacuum-launchRead 15 October 202640mm is the height of a double-layer step where the gap between the two layers exceeds 3cm

Mopping

Mop type
Spinning pads1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Dual Spinning Mops
Extending mop
Yes1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table: Mop Extending yes
Mop lift height
10.5mm1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 20260.41 in (10.5 mm), the height between the ground and the lifted pads. Footnote: based on in-house lab data
Leaves mop at the dock
Yes1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table: Mop Removal yes. Comparison table: Mop Automatic Removal yes. Mops are removed for long-pile carpets
Mop downforce (claimed)
Not available
Mop speed (claimed)
Not available
Robot water tank
Not available
Water flow levels
Not available

Base station

Base station
Auto-empty and mop washing1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Dock empties the dust box, washes the mop pads and dries them
Base station features
Hot-air drying, Auto detergent, Robot tank refill, Self-cleaning wash tray1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table: Hot Air Drying, Auto Solution Adding, Auto Tank Water Refilling and a self-cleaning washboard (AceClean DryBoard)6Retailer pageamazon.com/dp/B0DYSXC9X9Read 15 October 2026Bullet text: the dock rinses the mop pads with 167°F hot water, dries them and refills solution and water. The Amazon item details give model number RLL77SE, which conflicts with RLL22SE and is not stored
Base station water supply
Water tanks, plumbing kit optional1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Clean and used water tanks. Footnote: a Water Hookup Kit is available for separate purchase and support may vary by region. The maker's review blog says the same
Base station dust container
Bag1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Dust bag in the dock, two bags in the box
Base station dust capacity
3.2L1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 20263.2L dust bag
Days between bag changes (claimed)
100days1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Up to 100 days. Footnote: based on a calculation derived from environment testing in the maker's lab, conditions not stated
Clean water tank
4.5L1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table: Clean/Used Water Tank Capacity 4.5L/4.0L
Dirty water tank
4L1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Same row as the clean tank
Mop wash water temperature (claimed)
75°C1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Auto Mop Cleaning with Hot Water 167°F, which is 75 C. Footnote: base station water outlet temperature up to 167°F after heating, at about 73.4°F room temperature
Mop drying air temperature (claimed)
Not available

Battery and charging

Battery capacity
5,200mAh1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table: 5,200mAh. Footnote: based on in-house lab data
Battery voltage
14.4V5Retailer pageteamplush.by/en/product/dreame-l40s-ultraRead 15 October 2026Reseller copy of the user manual specifications: robot model RLL22SE, rated voltage 14.4 V DC. 5,200 mAh at 14.4 V is 74.9 Wh
Rated power
75W5Retailer pageteamplush.by/en/product/dreame-l40s-ultraRead 15 October 2026Robot rated power 75 W in the same table. The base station model is RCLE0305
Max run time (claimed)
220min1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Up to 220 minutes. Footnote: tested in vacuuming mode under quiet suction
Full charge time (claimed)
210min5Retailer pageteamplush.by/en/product/dreame-l40s-ultraRead 15 October 2026Full charge time approximately 3.5 hours, stored as 210 minutes. SmartHomeCompared also lists 3.5 hours. Dreame's review article says roughly 4 hours
Recharge and resume
Yes1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Page text: returns to the dock for recharge and resumes cleaning from where it left off

Noise

Noise (claimed)
ActivitySuction modeNoise (dB(A))
VacuumingQuiet55
VacuumingTurbo72
Dock emptyingNot available80
Source3Maker product pagedreametech.com/blogs/blog/dreame-l40s-ultra-reviewRead 15 October 2026Dreame's own review article dated 2025-08-10: Quiet mode roughly 55 dB, Turbo (Max) about 70-72 dB at the robot, dock emptying about 80 dB. The top of the range, 72, is stored. The standard mode is only called the low 60s and is not stored. No weighting or test method is stated

Connectivity and app

Wi-Fi standard
Not available
Wi-Fi bands
2.4 GHz5Retailer pageteamplush.by/en/product/dreame-l40s-ultraRead 15 October 2026Operating frequency range 2400-2483.5 MHz and only 2.4 GHz networks are supported
Bluetooth version
Not available
Matter
No8Spec databasesmarthomecompared.com/robot-vacuums/dreame-l40s-ultraRead 15 October 2026The review says this model has no Matter or native Apple Home support
Voice assistants
Amazon Alexa, Google Assistant2Press releasedreametech.com/blogs/news/dreame-l40s-series-robot-vacuum-launchRead 15 October 2026Compatible with third-party voice assistants (Alexa, Google Assistant)9Reviewvacuumchef.com/dreame-l40s-ultra-review-powerful-suction-smart-mopping-real-world-performance-testedRead 15 October 2026Alexa and Google Assistant, as in the maker's launch article
Built-in voice control
No1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table: Voice Control Third-Party. Comparison table: Direct Voice Control absent9Reviewvacuumchef.com/dreame-l40s-ultra-review-powerful-suction-smart-mopping-real-world-performance-testedRead 15 October 2026Review notes there is no built-in voice assistant
Companion app
Dreamehome1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Dreamehome App Control section
Saved maps
41Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Navigate and Map section: Fast Mapping (4 Maps)3Maker product pagedreametech.com/blogs/blog/dreame-l40s-ultra-reviewRead 15 October 2026The robot can save up to 4 floor maps
Live video
No4Maker product pagedreametech.com/blogs/blog/robot-vacuum-comparison-l40-l40s-ultra-ae-ceRead 15 October 2026Comparison table row Remote Video Viewing: no for the L40s Ultra, which has no camera

Measured

Suction at the brush housing (measured)
Not available
Airflow (measured)
Not available
Embedded sand pickup on carpet (measured)
92%7Reviewvacuumwars.com/dreame-l40s-series-reviewRead 15 October 2026Vacuum Wars carpet deep clean test, sand embedded in carpet: L40s Ultra 92 percent, average 75 percent. Review last updated 2026-09-16
Pet hair pickup on carpet (measured)
91%7Reviewvacuumwars.com/dreame-l40s-series-reviewRead 15 October 2026Vacuum Wars 2.5-inch flattened pet hair on carpet test: 91 percent
Max threshold (measured)
Not available
Test obstacles avoided (measured)
77Reviewvacuumwars.com/dreame-l40s-series-reviewRead 15 October 2026Vacuum Wars standard and torture obstacle tests: 7 of a possible 24 objects
Area per charge (measured)
179.77m²7Reviewvacuumwars.com/dreame-l40s-series-reviewRead 15 October 2026Chart: 1,935 sq ft times 0.09290304 = 179.77 m2. Battery efficiency 2.10 min per percent and navigation efficiency 0.85 m2 per min. The page does not repeat the power setting

Dimensions and weight

Front and side, drawn to scale.

Robot shape
Round1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table lists 13.78 x 13.78 in. Round body in the maker photos
Robot width
350mm1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table: 13.78 x 13.78 x 3.82 in, which is 350 x 350 x 97 mm. The page says dimensions may vary by up to 0.08 in
Robot depth
350mm1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026See width note
Robot height
97mm1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 20263.82 in = 97 mm. The LDS turret is fixed and included
Height with sensor raised
Not available
Robot weight
4.1kg(9 lb)1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table: Robot Vacuum Weight 9.04 lbs = 4.10 kg
Base station dimensions
Width340Depth457Height590mm(13.4 × 18 × 23.2 in)1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table: Base Station Dimensions 13.39 x 17.99 x 23.23 in, which is 340 x 457 x 590 mm in width, depth, height order. Depth follows the other Dreame docks. The ramp extension in the box is not described
Base station weight
9.2kg(20.3 lb)1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026Spec table: Base Station Weight 20.28 lbs = 9.20 kg

Certifications

We could not find any of these 2 fields. Show them
FCC IDs
Not available
Other certifications
Not available

In the box

In the box
Robot Vacuum x1, Base Station x1, Main Brush (pre-installed) x1, Brush Guard (pre-installed) x1, Side Brush (pre-installed) x1, Scale Inhibitor (pre-installed) x1, Dust Box (pre-installed, including dust box filter) x1, Mop Pad Holders x2, Mop Pads x2, Dust Bags (pre-installed x1) x2, Cleaning Tool x1, 200ml Cleaning Solution x1, Base Station Ramp Extension x1, Quick Start Guide x1, User Manual x11Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 2026What's in the Box list on the US page

Warranty

Manufacturer warranty (source market)
3years1Maker product pagedreametech.com/products/l40s-ultra-robot-vacuumRead 15 October 20263-Year Warranty on the US store page

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Variants

Each variant lists only what differs from the specs above.

Model numberGTINLaunch price (US)MarketsColours
010204AA00074200850070805063$1,399.99USWhite
010204AA00082300850070805070$1,399.99USBlack

Sources

We read 9 sources for this robot vacuum. The numbers match the markers in the sheet.

  1. Read 15 October 2026Backs 52 fields
  2. Read 15 October 2026Backs 7 fields
  3. Read 15 October 2026Backs 2 fields
  4. Read 15 October 2026Backs 1 field
  5. Read 15 October 2026Backs 4 fields
  6. Read 15 October 2026Backs 1 field
  7. Read 15 October 2026Backs 4 fields
  8. Read 15 October 2026Backs 2 fields
  9. Read 15 October 2026Backs 2 fields

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