Robot vacuums / Compare

Dreame L40 Ultra Gen 2 vs Roborock Qrevo Curv 2 Flow

A

Product A: Dreame

L40 Ultra Gen 2

58 of 89 known

Change Dreame L40 Ultra Gen 2

Compare the Roborock Qrevo Curv 2 Flow with

Search robot vacuums

B

Product B: Roborock

Qrevo Curv 2 Flow

70 of 89 known

Change Roborock Qrevo Curv 2 Flow

Compare the Dreame L40 Ultra Gen 2 with

Search robot vacuums

All 89 fields

Every value links to where we found it.

Only differences

ADreame L40 Ultra Gen 2

BRoborock Qrevo Curv 2 Flow

General

6 of 7 differ

Series

L Series1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Listed under L Series in the store menu

Qrevo Curv10Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-announcementRead 14 October 2026The newest model in the Qrevo Curv family after the Curv, CurvX and Curv S5X

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

RLL53SE, 010204AA001146, 010204AA001147, 010204AA001090, 010204AA0010911Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026US store SKUs 010204AA001146 (white) and 010204AA001147 (black) in the store product feed2Owner's manualmanualslib.com/manual/4399848/Dreame-L40-Ultra-Gen-2.htmlRead 15 October 2026Specifications page 20: robot model RLL53SE, base station model RCLE05126Retailer pageamazon.com/dp/B0FSJPFDPVRead 15 October 2026Item details: Model Number RLL53SE and Manufacturer Part Number RLL53SE. SmartHomeCompared gives the same model code9Spec databasesmarthomecompared.com/robot-vacuums/dreame-l40-ultra-gen-2Read 15 October 2026Model RLL53SE

RRE0BEL, RR-QrevoCurv2Flow0-M1, RRDE-QrevoCurv2Flow0-M1, QC2F02-001Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026US store SKU RR-QrevoCurv2Flow0-M13Maker product pagede.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026German store SKU RRDE-QrevoCurv2Flow0-M16Owner's manualgl-files.roborock.com/product/center/images/v69660d59068cb.pdfRead 14 October 2026Robot model RRE0BEL, dock EWFD53LRR (FCC and IC statement)7Owner's manualgl-files.roborock.com/product/center/images/v69660e28ac3eb.pdfRead 14 October 2026CE manual: robot RRE0BEL, dock EWFD53HRR14Retailer pagepood.datafox.ee/mobiilseadmed-ja-tarvikud/robottolmuimejad/vacuum-cleaner-robot-qrevo-curv-2-flow-qc2f02-00Read 14 October 2026Datafox lists MPN QC2F02-00 for the Qrevo Curv 2 Flow

GTIN / EAN

00850075094233, 00850075094240, 8101425627441Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026US store barcodes 00850075094233 (white) and 00850075094240 (black), written as the store prints them6Retailer pageamazon.com/dp/B0FSJPFDPVRead 15 October 2026Item details: UPC 810142562744 for the black unit on Amazon. It differs from the store barcodes, so it may be an Amazon packaging code

0195043008608, 69369059048051Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026GTIN 0195043008608 in the US page structured data3Maker product pagede.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026GTIN 6936905904805 in the German page structured data

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

Not available

October 202512Press articlecravingtech.com/roborock-launches-f25-ultra-and-qrevo-curv-2-flow-in-australia-just-in-time-for-christmas.htmlRead 14 October 2026Roborock AU launch article dated 2025-10-17 introduces the Qrevo Curv 2 Flow with an RRP of A$2,499

Status

Available8Press articlevacuumwars.com/dreame-l40-ultra-gen-2-and-d30-ultra-ceRead 15 October 2026In stock on Amazon on 2026-10-14

Available11Press articletech.yahoo.com/home/articles/roborock-unveils-first-ever-robot-090000128.htmlRead 14 October 2026Sold on the maker's US and German stores in October 2026

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$649.994Maker product pagedreametech.com/blogs/blog/robot-vacuum-comparison-l40-l40s-ultra-ae-ceRead 15 October 2026Dreame blog dated 2026-02-10: the L40 Ultra Gen 2 was originally 649.99 USD. Gizmodo (2026-06-27) also gives a 649 USD standard price. The store regular price today is 799.99 USD and is not the launch price10Reviewgizmodo.com/prime-day-isnt-over-yet-and-dreame-l40-ultra-at-41-off-is-proof-25000pa-and-self-cleaning-dock-included-2000778180Read 15 October 2026Article dated 2026-06-27: 649 USD standard price, Prime Day price 384 USD

$999.991Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026Regular price $999.99 on the maker's US store, sale price $699.99. Excludes tax

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

€8993Maker product pagede.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026German store compare-at price 899 EUR incl. VAT. The current sale price is lower, so it is not used

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US, CA3Maker product pageca.dreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Sold on the US and Canadian Dreame stores

US, DE1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026US store

ColoursiThe maker's own colour names

White, Black1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Store options White and Black6Retailer pageamazon.com/dp/B0FSJPFDPVRead 15 October 2026Listing colours Black and White

White4Maker product pageroborockstore.com.au/products/qrevo-curv-2-flowRead 14 October 2026Spec table: Colour White

Suction and brushes

9 of 13 differ

Max suction (claimed)iThe maker's highest suction pressure claim in pascals. Each maker measures it in its own lab, so figures from different brands are not directly comparable. A claim such as "175x more suction" is not converted. A maker can claim another figure in another market, such as Roborock in the US, so it is per variant.

25,000Pa1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 202625,000 Pa Vormax suction from a 6th-generation TurboForce motor. Footnote: based on in-house lab data

20,000Pa1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 202620,000 Pa HyperForce suction, internal testing per the maker's footnote

Suction power (claimed)iThe maker's suction power claim in air watts. Few robot makers publish it. Pascals are a different measure and go in Max suction.

Not available

Not available

Main brushesiNumber of main brush rolls under the robot. One roll split into two halves counts as one, and so do two cones tip to tip on one axis. Two rolls that turn against each other count as two.

11Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Main Brush Type Rubber Brush. Box list: Main Brush x1

19Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-reviewRead 14 October 2026DuoDivide rubber main brush with a center gap to channel hair. One roll split into two halves counts as one. The manual lists main brushes in the plural

Main brush materialiMaterial of the main brush rolls. Rubber covers rubber blades and fins.

Rubber1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Main Brush Type Rubber Brush

Not available

Main brush (as published)iThe maker's name for the main brush, such as "DuoDivide Brush".

Not available

DuoDivide1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026DuoDivide main brush

Main brush liftiThe robot can raise its main brush off the floor, for example while it mops.

No1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Main Brush Lifting is marked absent

Yes2Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 2026For spills and wet stains the robot switches to mop-only mode and lifts both the side brushes and the main brush

Side brushesiSpinning edge brushes. 0 for a robot without one.

11Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Box list: Side Brush x17Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Side Brushes 1

22Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 2026Dual Anti-Tangle System: a main brush and dual side brushes (Dual Lifting Arc Side Brushes)9Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-reviewRead 14 October 2026Two spinning side brushes instead of one

Extending side brushiThe side brush or its arm swings outward to reach corners and wall edges. False only when the maker or a spec table says the feature is absent. Silence is a missing value.

Yes1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Side Brush Extending yes (SideReach vacuuming)

No8Measurementvacuumwars.com/compare/robot-vacuums/roborock_qrevo_curv_2_flowRead 14 October 2026Compare page lists Extending Side Brush: No. The review says neither side brush extends outward9Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-reviewRead 14 October 2026Both side brushes lift to avoid wet messes but neither extends outward

Side brush liftiThe robot can raise its side brush off the floor.

No1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Side Brush Lifting is marked absent

Yes2Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 2026Dual Lifting Arc Side Brushes, lifted in mop-only mode

Max carpet pile (claimed)iTallest carpet pile the maker says the robot can clean. It is not the threshold height the robot can climb. A carpet height the robot climbs onto or glides over, such as carpet climbing 3 cm, is not a pile height.

Not available

Not available

Robot dustbiniDust capacity of the bin inside the robot. The base station's bag or bin is listed separately.

250mL1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Dust Box Capacity 250 ml7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Robot Dustbin Capacity 250 ml

324mL4Maker product pageroborockstore.com.au/products/qrevo-curv-2-flowRead 14 October 2026Spec table: Dustbin Volume 324ml. Vacuum Wars lists 324 ml in its compare table and 325 ml in the review text

FilteriPublished filter type or grade, such as "E11 HEPA". The robot's own filter. A dock filter goes in the source note.

Not available

Not available

Washable filteriThe maker says the filter can be rinsed with water.

Not available

Yes6Owner's manualgl-files.roborock.com/product/center/images/v69660d59068cb.pdfRead 14 October 2026Parts list names A7-6 Washable Filter

Navigation and obstacles

5 of 8 differ

NavigationiHow the robot maps the home. A turret is a raised laser sensor on top. A retractable turret sinks into the body to pass under furniture. Built-in lidar sits inside the body with no turret. A solid-state 3D ToF sensor without a turret counts as built-in lidar. Camera means visual mapping without lidar. Gyroscope only means the robot has no mapping sensor and cleans in rows with a gyroscope. Random bounce means the robot has no mapping sensor and no gyroscope and turns when it bumps into something.

Lidar turret1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Navigation LDS. The turret sits on top of the robot and is part of the 97 mm height7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Navigation Type Spinning Lidar

Lidar turret9Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-reviewRead 14 October 2026Top-mounted spinning LiDAR instead of the retracting system of the CurvX

Navigation system (as published)iThe maker's name, such as "VersaLift DToF" or "ClearView Pro LiDAR".

Pathfinder1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Guided by smart Pathfinder technology, the robot scans its surroundings in 360 degrees

PreciSense LiDAR Navigation2Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 2026PreciSense LiDAR Navigation System

Obstacle sensors (as published)iThe maker's description of the front obstacle sensors, such as "AI Camera x2 + LED".

3DAdapt obstacle avoidance with 3D structured light1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Obstacle Avoidance 3D Structured Light. Marketing: 3DAdapt obstacle avoidance with a built-in dynamic laser. Dreame's comparison blog says RGB AI plus 3D structured light, which conflicts with this table and with Vacuum Wars8Press articlevacuumwars.com/dreame-l40-ultra-gen-2-and-d30-ultra-ceRead 15 October 20263DAdapt structured light and Smart Pathfinder LiDAR

Reactive AI Obstacle Recognition with structured light and RGB camera1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026Reactive AI Obstacle Recognition: structured light and an RGB camera

AI object recognitioniA camera and software identify objects such as cables, socks and pet waste and steer around them. A structured light sensor without a camera counts when the maker says it identifies object types, as Narwal does. A bump sensor or infrared sensor alone does not qualify. False only when the maker or a spec table says the feature is absent. Silence is a missing value.

No1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: AI Recognition and Object Type Count is marked absent. Vacuum Wars says the Gen 2 drops the RGB camera of the original L40 Ultra2Owner's manualmanualslib.com/manual/4399848/Dreame-L40-Ultra-Gen-2.htmlRead 15 October 2026The robot overview lists a laser distance sensor, bumper, edge sensor, cliff sensors and a carpet sensor. No camera is listed8Press articlevacuumwars.com/dreame-l40-ultra-gen-2-and-d30-ultra-ceRead 15 October 2026Article: the Gen 2 uses 3DAdapt structured light and Smart Pathfinder LiDAR and has no RGB camera

Yes1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026

Object types recognized (claimed)iNumber of object types the maker says the robot can identify. A figure such as 300+ is stored as 300.

Not available

2001Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026Published as over 200 types. Objects should be wide 5 cm or more and tall 3 cm or more

Dirt detectioniA sensor or camera finds dirtier spots and the robot cleans them harder or again. False only when the maker or a spec table says the feature is absent. Silence is a missing value.

No7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Dirt sensor No

Yes1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026AI dirt recognition identifies the type of mess and adapts the cleaning2Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 2026DirTect Technology: AI dirt recognition boosts suction for dust and switches to mop-only for wet stains

Max threshold (claimed)iHighest single step or door threshold the maker says the robot can climb.

20mm1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Obstacle Crossing Height 0.79 in (2 cm)7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Threshold Climbing Height 20 mm. Vacuum Wars has not tested this model

20mm8Measurementvacuumwars.com/compare/robot-vacuums/roborock_qrevo_curv_2_flowRead 14 October 2026Hardware and Official Specs: Threshold Climbing Height 20 mm. The review says the robot is limited to standard 20 mm crossings

Max two-step threshold (claimed)iHighest total height of a two-step threshold the maker says the robot can climb, such as a stepped sliding door track. Makers set conditions, such as a minimum width of the lower step.

Not available

Not available

Mopping

7 of 8 differ

Mop typeiNone means the robot only vacuums. Spinning pads are round pads that rotate. A roller is a turning cylinder. A track is a belt-shaped mop that rolls over the floor. A vibrating pad moves back and forth. A static pad is dragged.

Spinning pads1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Mop Type Dual Omni-Scrub Mops. DuoScrub system with two high-speed rotary mops

Roller1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026SpiraFlow real-time self-cleaning roller mop, 270 mm wide

Extending mopiA mop pad or roller moves outward to reach wall edges and under low furniture. False only when the maker or a spec table says the feature is absent. Silence is a missing value.

Yes1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Mop Extending yes. MopExtend RoboSwing protrudes up to 4 cm7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Extending Mop Pad Yes

Yes1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026Edge-Adaptive Roller Mop cleans within about 10 mm of wall edges2Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 2026Edge-Adaptive Roller Mop extends to clean within 10 mm of edges. The AU store says up to 43 mm extension

Mop lift heightiHow far the robot raises its mop pads alone when it drives onto carpet, as the maker's spec table gives it. A lift with the raised chassis goes in the source note.

10.5mm1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Mop Lifting 0.41 in (10.5 mm). Footnote: the height difference of the robot before and after mop lifting7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Mop Raising Height 10.5 mm

15mm1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026Roller lifts up to 15 mm when a carpet is detected and a roller shield deploys10Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-announcementRead 14 October 202615 mm roller lift on carpet with an automatic roller shield

Leaves mop at the dockiThe robot drops its mop pads at the base station by itself and picks them up again, so it can vacuum carpet without them.

No1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Mop Removal is marked absent7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Drops Mop Pads at Station No

Not available

Mop downforce (claimed)iThe maker's claim for the force that presses the mop onto the floor. A claim in kilograms is converted at 1 kgf = 9.80665 N and rounded to one decimal, so 1 kg is 9.8 N. When the maker also gives a figure in N, that figure is stored. When the maker gives a range, such as 9-11 N, the top of the range is stored.

Not available

15N1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026Up to 15 N downward pressure, internal testing10Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-announcementRead 14 October 202615 N, about 2.5 times the original Curv's 6 N

Mop speed (claimed)iHighest rotation speed of the spinning pads or the mop roller that wipes the floor. The speed of another roller that does not wipe the floor is not stored here.

Not available

220rpm2Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 2026Roller spins at 220 RPM. Footnote: the maximum speed with extreme water flow in custom mode, internal testing10Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-announcementRead 14 October 2026270 mm roller mop spinning at 220 RPM

Robot water tankiClean water held in the robot itself. The base station tanks are separate.

80mL5Maker product pagedreametech.com/blogs/blog/dreame-l40-ultra-gen-2-robot-vacuums-reviewRead 15 October 2026Dreame review blog dated 2026-06-12: robot water tank 2.71 fl oz (80 ml). The same blog says the dock refills the robot's 80 ml tank

Not available

Water flow levelsiNumber of water flow settings the user can pick for mopping.

321Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 202632-level mop moisture adjustment, in-app

Not available

Base station

7 of 10 differ

Base stationiThe main jobs of the dock sold with this model. Auto-empty means the dock sucks the dust out of the robot. Mop washing means the dock cleans the mop.

Auto-empty and mop washing1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026PowerDock empties dust, washes and hot-air dries the mop pads and refills the robot clean water box

Auto-empty and mop washing1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026Multifunctional dock with auto emptying into a disposable dust bag and roller mop washing and drying

Base station featuresiExtra dock functions. Hot-air drying dries the mop with warm air. Auto detergent adds cleaning solution by itself. Robot tank refill fills the robot's water tank. Self-cleaning wash tray means the dock cleans its own mop washing tray.

Hot-air drying, Robot tank refill, Self-cleaning wash tray1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Auto Hot Air Drying, Auto Water Box Refilling and the AceClean DryBoard self-cleaning washboard with 20 spray nozzles. Auto Solution Adding is listed as purchase separately, the module is not in the box, so auto_detergent is not stored

Hot-air drying, Robot tank refill2Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 202655 C warm air drying and dirt level monitoring during mop washing. Auto tank refilling is in the AU store spec table4Maker product pageroborockstore.com.au/products/qrevo-curv-2-flowRead 14 October 2026Spec table: Auto Tank Refilling Yes, Auto Detergent Dispenser No

Base station water supplyiWater tanks means clean and dirty water tanks that the user fills and empties. Plumbed means the dock connects to a water inlet and a drain. The third option has tanks and a plumbing kit sold separately.

Water tanks1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026The CA FAQ says the user empties the dock used water tank and refills its clean water tank

Water tanks8Measurementvacuumwars.com/compare/robot-vacuums/roborock_qrevo_curv_2_flowRead 14 October 2026Compare page lists Plumbing Connections: No

Base station dust containeriWhat the dock empties the robot's dust into.

Bag1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Dust Bag Capacity 3.2 L. Box list: Dust Bags x2

Bag1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026Dock ships with a pre-installed disposable dust bag

Base station dust capacityiCapacity of the dust bag or bin in the dock.

3.2L1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Dust Bag Capacity 3.2 L7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Bag Capacity 3.2 l

Not available

Days between bag changes (claimed)iThe maker's estimate of how long the dock holds dust before it must be emptied. Makers assume different homes, pets and schedules.

100days1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Auto-Empty up to 100 days. Footnote: based on in-house lab data7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Days Before Empty 100 days

65days2Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 2026Up to 65 days without manual emptying. Internal testing, depends on usage habits and environment

Clean water tankiClean water tank in the base station.

4.5L1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Clean/Used Water Tank Capacity 4.5 L / 4.0 L

4L8Measurementvacuumwars.com/compare/robot-vacuums/roborock_qrevo_curv_2_flowRead 14 October 2026Compare page lists Bin Water Tank 4 litres, which Clubic also lists as water tank capacity of 4 l. Read as the dock clean water tank13Spec databaseclubic.com/596191-roborock-qrevo-curv-2-flow.htmlRead 14 October 2026Clubic spec sheet lists water tank capacity 4 l, no dock or robot label. Its dust container 2.5 l conflicts with the 2.7 l of Vacuum Wars, so no dock bag capacity is stored

Dirty water tankiDirty water tank in the base station.

4L1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: used water tank 4.0 L

Not available

Mop wash water temperature (claimed)iHighest water temperature the dock uses to wash the mop. The maker's own figure. Makers measure at different points, so values are not comparable between makers. The measuring point is required in the source note. A maker can claim another figure in another market, so it is per variant.

Not available

75°C2Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 2026Up to 75 C. Footnote: temperature measured at the internal heater output, internal testing. The US page gives 167 F

Mop drying air temperature (claimed)iTemperature of the warm air the dock blows over the mop. The maker's own figure. Makers measure at different points, so values are not comparable between makers. The measuring point is required in the source note.

Not available

55°C2Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 2026Air at the base outlet during drying can be heated up to 55 C at standard room temperature

Battery and charging

3 of 6 differ

Battery capacityiPublished capacity of the robot's battery pack at the nominal battery voltage. When the maker gives a typical or headline figure and a lower rated figure, the headline figure is stored and the rated one goes in the source note, as for Dreame. A rated figure alone is stored. A count times a capacity, such as 2600 mAh x 2, is not a pack capacity. The total is stored only when the maker or a review states it.

5,200mAh1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Battery Capacity 5,200 mAh

5,200mAh1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026FAQ and spec box: 5,200 mAh. Charging from 15 percent to full takes about 3 hours, a partial charge that is not stored6Owner's manualgl-files.roborock.com/product/center/images/v69660d59068cb.pdfRead 14 October 2026Basic Parameters: 5200 mAh typical

Battery voltageiNominal pack voltage, such as 14.4 V.

14.4V2Owner's manualmanualslib.com/manual/4399848/Dreame-L40-Ultra-Gen-2.htmlRead 15 October 2026Specifications page 20: Rated Voltage 14.4 V. 5,200 mAh at 14.4 V is 74.9 Wh

14.4V6Owner's manualgl-files.roborock.com/product/center/images/v69660d59068cb.pdfRead 14 October 2026Basic Parameters: 14.4 V/5200 mAh (TYP) lithium-ion battery

Rated poweriRated electrical power of the robot from the spec sheet, label or manual. The base station's power is not included. A charger input rating from the manual, such as 20 V 2.5 A, is not this value.

75W2Owner's manualmanualslib.com/manual/4399848/Dreame-L40-Ultra-Gen-2.htmlRead 15 October 2026Specifications page 20: Rated Power 75 W for the robot. The base station rated input is 120 V 60 Hz 4.1 A during dust emptying

65W4Maker product pageroborockstore.com.au/products/qrevo-curv-2-flowRead 14 October 2026Spec table: Rated Power 65W. The AU store is the Official Roborock Online Store ANZ

Max run time (claimed)iLongest run time on one charge that the maker claims. Makers usually state it in the quietest suction mode without mopping. Claims that include charging breaks are not stored.

231min1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Up to 231 minutes and 1,679 sq ft (156 m2) in Vacuum Only mode under Quiet Suction. Footnote: in-house lab data6Retailer pageamazon.com/dp/B0FSJPFDPVRead 15 October 2026Listing: up to 231 minutes and 1,679 sq ft in Quiet Mode, Battery Life 231 minutes7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Official Battery Life 231 mins9Spec databasesmarthomecompared.com/robot-vacuums/dreame-l40-ultra-gen-2Read 15 October 2026Battery Life 231 minutes

228min4Maker product pageroborockstore.com.au/products/qrevo-curv-2-flowRead 14 October 2026Spec table: Runtime (Quiet Mode) 228min. Vacuum Wars lists 242 min and Clubic 240 min. The maker figure with a named mode is stored

Full charge time (claimed)iThe maker's claim for charging from empty to full. A partial charge, such as 9 to 80%, is not stored.

210min2Owner's manualmanualslib.com/manual/4399848/Dreame-L40-Ultra-Gen-2.htmlRead 15 October 2026Specifications page 20: Charging Time approx. 3.5 hours, stored as 210 minutes. SmartHomeCompared also lists 3.5 hours9Spec databasesmarthomecompared.com/robot-vacuums/dreame-l40-ultra-gen-2Read 15 October 2026Charging Time 3.5 hours

Not available

Recharge and resumeiThe robot returns to the dock to charge and then finishes the job where it stopped.

Yes1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026When the battery is low the robot auto-returns to the dock to recharge and resumes cleaning2Owner's manualmanualslib.com/manual/4399848/Dreame-L40-Ultra-Gen-2.htmlRead 15 October 2026Low battery sends the robot back to charge and it resumes unfinished cleaning tasks. Must be enabled in the app7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Recharge and Resume Yes

Yes6Owner's manualgl-files.roborock.com/product/center/images/v69660d59068cb.pdfRead 14 October 2026If the battery runs low during a cleaning cycle, the robot returns to the dock and resumes where it left off after charging

Noise

1 of 1 differ

Noise (claimed)iOne row per noise figure the maker publishes. Suction mode is the maker's mode name, such as "Standard". When the maker gives a range, the top of the range is stored. A row leaves out the activity or the mode when the maker does not name it, such as a figure for quiet mode alone or a bare figure with neither.

ADreame L40 Ultra Gen 2

Not available

BRoborock Qrevo Curv 2 Flow

Activity	Noise (dB(A))
Vacuuming and mopping	65
Mop washing	57
Mop drying	56
Dock emptying	70

Source1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026FAQ: Vac and Mop mode 62 to 65 dB (65 stored), mop washing and drying about 56 to 57 dB (57 stored for washing), hot air drying 56 dB, dust emptying 70 dB. Weighting and suction mode not stated

Connectivity and app

6 of 9 differ

Wi-Fi standardi802.11n is Wi-Fi 4, 802.11ac is Wi-Fi 5 and 802.11ax is Wi-Fi 6. Use the highest protocol the manual lists. None only when a source says the robot has no Wi-Fi.

Not available

Wi-Fi 47Owner's manualgl-files.roborock.com/product/center/images/v69660e28ac3eb.pdfRead 14 October 2026RF Specification: WiFi 802.11b/g/n, 2400 to 2483.5 MHz. 802.11n is Wi-Fi 4

Wi-Fi bandsiBands the maker's manual or spec table states. Many robots use 2.4 GHz only. Vacuum Wars' Wi-Fi version column is not used for this field.

2.4 GHz2Owner's manualmanualslib.com/manual/4399848/Dreame-L40-Ultra-Gen-2.htmlRead 15 October 2026Specifications page 20: Operation Frequency 2400-2483.5 MHz. Amazon states 2.4 GHz only6Retailer pageamazon.com/dp/B0FSJPFDPVRead 15 October 2026Only supports 2.4G WiFi, for USA use only7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Wi-Fi version 2.4 GHz

2.4 GHz6Owner's manualgl-files.roborock.com/product/center/images/v69660d59068cb.pdfRead 14 October 2026Connecting to the App: only 2.4 GHz WiFi is supported7Owner's manualgl-files.roborock.com/product/center/images/v69660e28ac3eb.pdfRead 14 October 2026RF Specification lists 2400 to 2483.5 MHz only

Bluetooth versioniAs published, such as "4.1". Robots use Bluetooth for setup.

Not available

4.17Owner's manualgl-files.roborock.com/product/center/images/v69660e28ac3eb.pdfRead 14 October 2026RF Specification: Bluetooth BLE 4.1. A third-party manual copy lists 802.11b/g/n/ax and BLE 5.2 for a Flow/FlowX combined manual, the maker CE manual is used

MatteriThe maker states Matter support. Support that is only promised for a later update is not counted.

Not available

Not available

Voice assistantsiThird-party assistants that can control the robot, such as "Amazon Alexa".

Amazon Alexa, Siri, Google Home1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Compatible with Alexa, Siri and Google Home. Spec table: Voice Control Third-Party

Amazon Alexa, Apple Siri Shortcuts, Google Home2Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 2026Voice commands via Amazon Alexa, Apple Siri Shortcuts or Google Home. Matter is promised for an upcoming OTA and is not stored

Built-in voice controliThe robot has its own microphone and responds to spoken commands without a smart speaker.

No1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Voice Control Third-Party, so there is no built-in assistant. Vacuum Wars agrees7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Virtual Assistant No

Yes2Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 2026Built-in Hello Rocky voice assistant that works offline

Companion appiThe maker's phone app for the robot, by name.

Dreamehome5Maker product pagedreametech.com/blogs/blog/dreame-l40-ultra-gen-2-robot-vacuums-reviewRead 15 October 2026The Dreamehome App on iOS and Android

Roborock app6Owner's manualgl-files.roborock.com/product/center/images/v69660d59068cb.pdfRead 14 October 2026Connecting to the App: open the Roborock app and tap Add

Saved mapsiNumber of floor maps the robot can store, for homes with several levels.

41Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Multi-Level Mapping accurately maps up to 4 floors. Stored as 4 saved maps

41Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026Multi-Level Mapping recognizes up to 4 levels. Stored as 4 saved maps

Live videoiThe app can show the robot's camera view live.

No7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Live Video Monitoring No

Yes2Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 2026Real-time video calls with the built-in camera for pets8Measurementvacuumwars.com/compare/robot-vacuums/roborock_qrevo_curv_2_flowRead 14 October 2026Compare page lists Live Video Monitoring: Yes

Measured

6 of 7 differ

Suction at the brush housing (measured)iSuction pressure a reviewer measured with a manometer at the robot's brush housing on the highest power setting. It is far lower than the maker's figure and is not comparable to it.

Not available

0.47kPa8Measurementvacuumwars.com/compare/robot-vacuums/roborock_qrevo_curv_2_flowRead 14 October 2026Vacuum Wars suction bench test at the brush housing, maximum power, 0.47 kPa9Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-reviewRead 14 October 20260.47 kPa suction bench test

Airflow (measured)iAirflow at the suction inlet on the highest power setting, measured by a reviewer with an anemometer.

Not available

16CFM8Measurementvacuumwars.com/compare/robot-vacuums/roborock_qrevo_curv_2_flowRead 14 October 2026Vacuum Wars airflow bench test, maximum power, 16 CFM9Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-reviewRead 14 October 202616 CFM airflow test

Embedded sand pickup on carpet (measured)iShare of sand worked into medium-pile carpet that the robot removed in a timed run on the highest power setting. The reviewer weighs the robot's bin before and after.

Not available

87%8Measurementvacuumwars.com/compare/robot-vacuums/roborock_qrevo_curv_2_flowRead 14 October 2026Vacuum Wars Carpet Deep Clean Test, sand embedded in medium-pile carpet, 87 percent9Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-reviewRead 14 October 202687 percent embedded sand removed, average 76.7 percent

Pet hair pickup on carpet (measured)iShare of a fixed weight of flattened pet hair, about 2.5 inches long, removed from carpet in two runs. The reviewer weighs the hair left behind.

Not available

77.5%8Measurementvacuumwars.com/compare/robot-vacuums/roborock_qrevo_curv_2_flowRead 14 October 2026Vacuum Wars 2.5-inch flattened pet hair test, 77.5 percent9Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-reviewRead 14 October 202677.5 percent of 2.5-inch flattened hair removed, average 81 percent

Max threshold (measured)iHighest single threshold the robot cleared on a reviewer's test rig.

Not available

Not available

Test obstacles avoided (measured)iNumber of the 24 test objects the robot steered around in Vacuum Wars' standard and torture obstacle tests.

Not available

169Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-reviewRead 14 October 2026Standard and torture obstacle tests: 16 of 24 objects avoided, average 16.6

Area per charge (measured)iFloor area the reviewer estimates per charge from measured battery use and a fixed floor plan, on the lowest suction setting without mopping. Vacuum Wars multiplies battery efficiency by navigation efficiency. It is not a full-charge run.

Not available

119.57m²8Measurementvacuumwars.com/compare/robot-vacuums/roborock_qrevo_curv_2_flowRead 14 October 2026Compare page 1287 sq ft times 0.09290304 = 119.57 m2. Battery efficiency 1.44 min per percent, lowest power setting without mopping9Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-reviewRead 14 October 2026Under 1,300 sq ft estimated per charge

Dimensions and weight

6 of 8 differ

Robot shapeiShape seen from above. D-shaped means a flat front and a round back.

Round1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Product photos show a round body, 350 x 350 mm

Round9Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-reviewRead 14 October 2026Top-mounted LiDAR on a round-bodied robot, per the review's photos and the 353 x 353 mm footprint

Robot widthiWidth of the robot from side to side.

350mm1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: 13.78 x 13.78 x 3.82 in (350 x 350 x 97 mm)

353mm5Maker product pageroborock.com.my/product/%E3%80%90new%E3%80%91roborock-qrevo-curv-2-flow-pre-orderRead 14 October 2026Robot 353 x 353 x 119 mm. The US page gives 13.9 x 13.9 x 4.7 in

Robot depthiLength of the robot from front to back. The Length in a maker's Length x Width x Height is the depth.

350mm1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: 350 x 350 x 97 mm

353mm5Maker product pageroborock.com.my/product/%E3%80%90new%E3%80%91roborock-qrevo-curv-2-flow-pre-orderRead 14 October 2026See width note

Robot heightiHeight at the robot's lowest operating position. A fixed lidar turret is included. A retractable turret is lowered. This decides which furniture the robot fits under.

97mm1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: 97 mm. The LDS turret is included

119mm5Maker product pageroborock.com.my/product/%E3%80%90new%E3%80%91roborock-qrevo-curv-2-flow-pre-orderRead 14 October 2026119 mm including the fixed LiDAR turret9Reviewvacuumwars.com/roborock-qrevo-curv-2-flow-reviewRead 14 October 20264.7 inches (119 mm), relatively tall

Height with sensor raisediHeight with a retractable lidar turret raised. Empty for a robot without a retractable sensor.

Not available

Not available

Robot weightiRobot with battery and dustbin, without the base station. Some store pages label the robot and dock together as Robot Weight. Check that the figure fits the robot alone.

4.01kg(8.8 lb)1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Robot Vacuum Weight 8.58 lbs (4.01 kg)9Spec databasesmarthomecompared.com/robot-vacuums/dreame-l40-ultra-gen-2Read 15 October 2026Vacuum Weight 4.01 kg

4.6kg(10.1 lb)5Maker product pageroborock.com.my/product/%E3%80%90new%E3%80%91roborock-qrevo-curv-2-flow-pre-orderRead 14 October 2026Robot Weight 4.60 kg on the Roborock Malaysia store. Clubic lists 5.3 kg, the maker figure is stored

Base station dimensionsiWidth, depth and height of the dock. When the maker gives the depth with and without the ramp, the depth with the ramp is stored. Makers write the axes in different orders, so they are mapped with care. A size the maker gives for the robot and dock together counts only when the robot sits inside the dock's footprint, and the source note says so.

Width340Depth457Height590mm(13.4 × 18 × 23.2 in)1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Base Station Dimensions 17.99 x 13.39 x 23.23 in (457 x 340 x 590 mm). Read as depth with the ramp 457, width 340 and height 590 as for other Dreame docks

Width450Depth450Height450mm(17.7 × 17.7 × 17.7 in)5Maker product pageroborock.com.my/product/%E3%80%90new%E3%80%91roborock-qrevo-curv-2-flow-pre-orderRead 14 October 2026Dock 450 x 450 x 450 mm with robot docked. The AU store lists Dock and Robot plus Dock as 450 x 450 x 450 mm. The German page labels this robot and station

Base station weightiDock without the robot and with empty tanks.

8.86kg(19.5 lb)1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026Spec table: Base Station Weight 19.53 lbs (8.86 kg)9Spec databasesmarthomecompared.com/robot-vacuums/dreame-l40-ultra-gen-2Read 15 October 2026Dock weight 8.86 kg

9.6kg(21.2 lb)5Maker product pageroborock.com.my/product/%E3%80%90new%E3%80%91roborock-qrevo-curv-2-flow-pre-orderRead 14 October 2026Dock station 9.60 kg. The US page gives 14.33 kg for robot and dock together

Certifications

1 of 1 differ

FCC IDs

Not available

Not available

Other certificationsiNamed certifications, verbatim, such as a TÜV SÜD or UL Solutions cybersecurity mark.

Not available

TÜV certified to ETSI EN 303 645 cybersecurity2Maker product pageglobal.roborock.com/pages/roborock-qrevo-curv-2-flowRead 14 October 2026Page says TUV-certified to ETSI EN 303 645

In the box

1 of 1 differ

In the boxiItems supplied with this exact model, verbatim.

L40 Ultra Gen 2 Robot Vacuum, Base Station, Main Brush (pre-installed), Brush Guard (pre-installed), Side Brush (pre-installed), Dust Box (pre-installed, including filter), Mop Pads x2, Mop Pad Holders x2, Dust Bags x2 (1 pre-installed), Base Station Ramp Extension Plate, Quick Start Guide, User Manual1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026What's in the Box on the US page

User Manual, Robot, Dock (with pre-installed disposable dust bag), Power Cord1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026What's in the Box list on the US page

Links

Not compared

Product page

www.dreametech.com/products/l40-ultra-gen2-robot-vacuum1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026

us.roborock.com/products/roborock-qrevo-curv-2-flow1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 2026

Spec sheet

Not available

Not available

Manual

www.manualslib.com/manual/4399848/Dreame-L40-Ultra-Gen-2.html2Owner's manualmanualslib.com/manual/4399848/Dreame-L40-Ultra-Gen-2.htmlRead 15 October 2026ManualsLib copy of the 22-page Dreame L40 Ultra Gen 2 user manual for model RLL53SE. The maker's own download needs a form

gl-files.roborock.com/product/center/images/v69660d59068cb.pdf6Owner's manualgl-files.roborock.com/product/center/images/v69660d59068cb.pdfRead 14 October 2026

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

1 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

3years1Maker product pagedreametech.com/products/l40-ultra-gen2-robot-vacuumRead 15 October 2026US store banner: 3-Year Warranty. Vacuum Wars lists 1 year7Measurementcompare.vacuumwars.com/compare/robot-vacuums/dreame_l40_ultra_gen_2Read 15 October 2026Compare page: Warranty period 1 years. The US store says 3 years and is stored

1year1Maker product pageus.roborock.com/products/roborock-qrevo-curv-2-flowRead 14 October 20261-year Warranty in the US store shipping and returns row

Both are also in the API. Back to all robot vacuums.