Dreame L40 Ultra

Name: Dreame L40 Ultra
Brand: Dreame
SKU: 3718

Manufacturer: Dreame

The Dreame L40 Ultra is a robot vacuum cleaner that combines strong suction with a full suite of automated floor-care features. Weighing 4300 g and built around a compact 350 mm frame, it handles both vacuuming and mopping in a single pass, with automatic mop raising and drying handled at the docking station. Google Assistant and Alexa compatibility allow hands-free voice control, while a dedicated smartphone app enables scheduling, no-go zones, and virtual barriers.

At the core of its cleaning system is a 11000 Pa suction motor paired with HEPA and allergy filtration, an electrostatic filtration layer, and four selectable cleaning modes that cover all floor types. The 5200 mAh battery delivers up to 194 minutes of runtime per charge, with a full recharge taking approximately 4 hours. Dust collection uses bags inside the docking station, with an estimated empty interval of 75 days, and the robot manages its own docking, height adjustment, and anti-fall protection autonomously.

Pros

Delivers 11000 Pa of suction across four cleaning modes, covering all floor types in a single device
Self-emptying system with an estimated 75-day interval between manual bin changes reduces routine maintenance significantly
Mop raising, mop drying, and water level adjustment are all handled automatically, supporting a fully hands-free wet cleaning cycle
The 5200 mAh battery provides up to 194 minutes of runtime, allowing large areas to be cleaned in a single session
Supports both HEPA and allergy filtration alongside an electrostatic filtration system for thorough air cleaning during operation
Full mapping, route mapping, no-go zones, virtual barriers, and carpet detection give precise control over where and how the robot cleans

Cons

Onboard dustbin capacity of just 0.3 l is small, placing greater reliance on the self-emptying dock for regular use
Charge time of 4 hours is relatively lengthy given the runtime offered
No dirt sensor means the robot cannot automatically intensify cleaning in heavily soiled spots
Does not include a bag-full indicator, so there is no on-device alert when the collection bag in the dock needs replacing
The battery is not removable, so it cannot be swapped out when depleted away from the dock
No overheating indicator is present to warn users during extended or repeated cleaning cycles

Who is this for?

This robot vacuum is well-suited to households with mixed flooring, where the combination of carpet detection and automatic mop raising allows it to transition between hard floors and rugs without manual adjustments. Users who want minimal involvement in daily cleaning routines will appreciate the self-emptying dock with its 75-day interval, auto docking, and fully automated mop drying cycle. The 194-minute runtime also makes it a practical fit for larger homes where a single cleaning session needs to cover significant ground, and the no-go zones, virtual barriers, and scheduling support give those who value structured cleaning control plenty of options to tailor its behavior.

Who is this NOT for?

Users who need real-time alerts about dust collection status may find the lack of a bag-full indicator inconvenient, as there is no on-device notification when the dock bag requires changing. The small 0.3 l onboard dustbin also makes this a poor match for environments that generate heavy debris regularly, since the robot depends on frequent docking to maintain effective collection. Additionally, those looking for targeted, sensor-driven cleaning intensity will be disappointed by the absence of a dirt sensor, meaning the robot cannot automatically focus extra effort on particularly soiled areas of the floor.

General info:

has HEPA filter	✓
audible noise	63 dB
has an allergy filter	✓
compatible with Google Assistant	✓
works with Alexa	✓
weight	4300 g
width	350 mm
height	103.8 mm
thickness	350 mm
volume	12715.5 cm³
warranty period	1 years
estimated empty time	75 days
docking station size	91691.659 cm³

The Dreame L40 Ultra measures 350 mm wide and 103.8 mm tall, weighing 4300 g, while its docking station occupies a notably larger footprint of 91691.659 cm³. It includes both a HEPA filter and an allergy filter, making it suitable for environments where air quality is a concern. Operating noise sits at 63 dB, and the dust collection system has an estimated empty interval of 75 days. The robot is compatible with Google Assistant and Alexa for voice control, and carries a one-year warranty.

Features:

has mapping	✓
supports no-go zones	✓
supports a remote smartphone	✓
has an obstacle sensor	✓
has problem area cleaning	✓
is self-emptying	✓
has carpet detection	✓
doesn't get stuck	✓
supports virtual barriers	✓
has route mapping	✓
Has voice prompts	✓
auto docking	✓
has anti-fall sensor	✓
can be scheduled	✓
has a remote control	✕
has water level adjustment	✓
supports Wi-Fi	✓
has mop cleaning	✓
has mop raising	✓
has mop drying	✓

The L40 Ultra supports full floor mapping and route mapping, allowing it to navigate systematically while avoiding designated no-go zones and virtual barriers. Its obstacle sensor and anti-stuck system help it handle furniture and tight spaces without getting stranded, and the anti-fall sensor prevents it from tumbling down stairs or ledges. Carpet detection and automatic mop raising mean it can transition between floor types without manual intervention, lifting the mop pad when it reaches carpeted areas. The mopping system also includes water level adjustment and mop drying at the dock, rounding out a fully automated wet-and-dry cleaning cycle. Scheduling, Wi-Fi connectivity, and smartphone control are all supported, and the robot returns to its base and empties itself automatically after each session, though it does not include a dedicated physical remote control. Voice prompts provide on-device feedback during operation.

Design:

dustbin capacity	0.3 l
Has a display	✕
has twin side brushes	✕
has included washable filters	✓
automatically adjusts its height	✓
Indicates when full	✕
uses bags	✓

The L40 Ultra uses a bag-based dust collection system with a 0.3 l onboard dustbin, though it does not include a bag-full indicator to signal when capacity has been reached. Washable filters are included, and the robot automatically adjusts its height to maintain consistent contact across different floor surfaces. It does not feature twin side brushes or an onboard display, keeping the physical design relatively streamlined.

Cleaning power:

suction power	11000 Pa
cleans all floor types	✓
cleaning modes	4
mops	✓
has a dirt sensor	✕
Has an electrostatic filtration system	✓
has UV light	✕

The L40 Ultra delivers 11000 Pa of suction across four cleaning modes and is rated to handle all floor types, with mopping capability included as part of its standard cleaning repertoire. An electrostatic filtration system helps capture fine particles during operation. It does not include a dirt sensor for automatically detecting heavily soiled areas, nor does it feature UV light for sanitization.

Power:

battery power	5200 mAh
runtime	194 min
charge time	4 hours
operating power consumption	38W
Has an overheating indicator	✕
has a removable battery	✕
has auto-off	✓

The L40 Ultra is powered by a 5200 mAh battery that supports up to 194 minutes of runtime per charge, with a full recharge taking approximately 4 hours at an operating power consumption of 38W. The robot includes an auto-off function to cut power when not in use, though it does not feature an overheating indicator or a removable battery.

Final Verdict

The Dreame L40 Ultra positions itself as a capable, largely hands-off cleaning solution for mixed-floor homes. Its 11000 Pa suction, combined with a fully automated mopping cycle that includes mop raising and drying, covers both dry and wet floor care without requiring user intervention between sessions. The self-emptying dock with an estimated 75-day bin interval reinforces this low-maintenance approach, making it a practical fit for busy households that prioritize automation over manual control. While the absence of a dirt sensor and bag-full indicator do leave some gaps in responsiveness and notification, the overall feature set — spanning advanced mapping, carpet detection, long runtime, and thorough filtration — reflects a well-rounded robot vacuum that handles the demands of everyday home cleaning with a high degree of autonomy.