Our Verdict
Dreame L40 Ultra Gen 2 Wins

Its 25,000Pa suction power is 2.5 times greater than the L10s Ultra Gen 2's 10,000Pa, offering superior deep cleaning, especially on carpets. Coupled with precise LiDAR navigation over camera navigation, the L40 Ultra Gen 2 at $569.99 provides a more advanced and efficient cleaning experience. The L10s Ultra Gen 2 at $399.99 remains a strong contender for those prioritizing budget, robust mopping with warm air drying, and an impressive 75-day auto-empty cycle for convenience, making it a better pick when comprehensive mopping and extended autonomy are preferred at a lower price point.
Bottom Line: Dreame L40 Ultra Gen 2 is the better choice. Its 25,000Pa suction power is 2.
In-Depth Analysis
How they compare in practice
The Dreame L40 Ultra Gen 2 distinguishes itself primarily through sheer cleaning power and advanced navigation. Boasting an incredible 25,000Pa suction, it dwarfs the L10s Ultra Gen 2's still respectable 10,000Pa. In real-world terms, this means the L40 Ultra Gen 2 will more effectively lift deeply embedded dirt from carpets, extract pet hair from crevices, and pick up larger debris on hard floors with greater ease, making it a superior choice for homes with high traffic or significant carpeting. Complementing this, the L40 Ultra Gen 2 employs LiDAR navigation, which provides precise mapping, faster room recognition, and more reliable performance in low-light conditions compared to the L10s Ultra Gen 2's camera-based navigation. While the L10s Ultra Gen 2's 3D obstacle avoidance is effective, LiDAR generally offers a more robust and efficient overall cleaning path.
Mopping capabilities also present key differences. The L40 Ultra Gen 2 introduces an extendable side brush and mop, a game-changer for cleaning right up to edges and into corners often missed by circular robots. Its mop also intelligently lifts 0.41 inches, crucial for preventing carpet wetting in homes with mixed flooring. The L10s Ultra Gen 2, while lacking the extendable feature, offers dual rotary mops that scrub with pressure and benefits from warm air drying in its base station, ensuring hygienic mop pads. Both robots integrate self-emptying and mop self-cleaning docks, minimizing user intervention. However, the L10s Ultra Gen 2's base boasts an impressive 75-day auto-empty capacity, potentially reducing interaction even further than the L40 Ultra Gen 2’s standard offering.
Considering the price delta, the L40 Ultra Gen 2 at $569.99 justifies its higher cost with industry-leading suction, sophisticated LiDAR, and innovative edge-cleaning technology, catering to users who demand the absolute best and most thorough clean. The L10s Ultra Gen 2, priced at $399.99, offers exceptional value by delivering strong suction, advanced mopping with warm air drying, and robust automation features. It's a compelling option for those who want premium features and strong performance without the top-tier investment, especially if deep carpet cleaning and extreme edge coverage aren't their absolute highest priorities.
Key Differences
The most significant spec differences at a glance
Suction Power
60% lessBattery Life
4% moreAdvantages
Where each product wins
DREAME
- Battery Life: 4% higher (240 vs 231)
DREAME
- Suction Power: 60% higher (10000 vs 25000)
Which to Pick for Your Situation
Concrete scenarios with a clear recommendation
For homes with extensive carpeting or deep cleaning needs
DREAMEThe L40 Ultra Gen 2 offers significantly higher 25,000Pa suction power, ideal for deep carpet cleaning and stubborn debris removal.
For mixed flooring environments with many tight corners
DREAMEIts extendable side brush and mop ensure thorough cleaning along edges and in hard-to-reach areas, while the mop lifts 0.41in over carpets.
For value-conscious buyers prioritizing effective mopping and autonomy
DREAMEThe L10s Ultra Gen 2 provides strong 10,000Pa suction, warm air mop drying, and a 75-day auto-empty base at a more affordable $399.99.
For users needing precise navigation and efficient mapping in complex layouts
DREAMELiDAR navigation in the L40 Ultra Gen 2 offers superior accuracy and efficiency for mapping compared to camera-based systems.
Who Should Buy Which?
Find the right product for your needs
Buy DREAME if...
DREAME L10s Ultra Gen
The Dreame L10s Ultra Gen 2 is the ideal choice for a budget-conscious homeowner or apartment dweller who doesn't want to compromise on advanced cleaning features. This buyer prioritizes excellent value, demanding a powerful robot that handles daily vacuuming and mopping effectively without the top-tier price tag. They likely live in a medium-sized space with a mix of hard floors and some area rugs, where 10,000Pa suction is more than sufficient for everyday dirt and pet hair. The appeal of advanced mopping, especially the dual rotary mops that scrub under pressure and the hygienic warm air drying in the base station, is significant. Above all, this user values maximum autonomy; the L10s Ultra Gen 2’s 75-day auto-empty capacity means they can practically forget about vacuum maintenance for over two months. While they might forgo the absolute highest suction or LiDAR precision of more expensive models, they gain a robust, convenient, and highly effective cleaning solution at $399.99, appreciating the reliable 3D obstacle avoidance for hassle-free navigation.
Buy DREAME if...
DREAME L40 Ultra Gen
The Dreame L40 Ultra Gen 2 is perfectly suited for the discerning homeowner who seeks the ultimate in automated cleaning performance and efficiency, and is willing to invest in cutting-edge technology. This buyer likely resides in a larger home with a variety of flooring types, including significant carpeting or high-traffic areas where deep cleaning is paramount. Their top priority is unmatched cleaning power, making the L40 Ultra Gen 2’s astounding 25,000Pa suction a major draw for tackling stubborn dirt and pet dander. Precision and thoroughness are also key; they value LiDAR navigation for its accurate mapping and the innovative extendable side brush and mop that ensures every corner and edge is impeccably clean—a common pain point for many robot vacuums. The L40 Ultra Gen 2's ability to lift its mop 0.41 inches is crucial for homes with mixed flooring, offering peace of mind. This buyer embraces the hands-off convenience of a self-cleaning dock and understands that the higher $569.99 price tag reflects a superior, comprehensive cleaning experience that leaves no detail overlooked.
Spec Comparison
11 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $400 | $570 |
| Rating | 4.2(892) | 4.3(497) |
| Suction Power Pa | 10000 | 25000 |
| Navigation Type | camera | LiDAR |
| Self Emptying Base | Yes | Yes |
| App Control | Yes | Yes |
| Model Number | RLL32SE | RLL53SE |
| Height Inches | 1.58" | — |
| Carpet Detection | Yes | Yes |
| Mopping Function | Yes | Yes |
| Battery Life Mins | 240 | 231 |
| Obstacle Avoidance | Yes | Yes |
| Dustbin Capacity ml | 300 | — |
Swipe horizontally to see all columns
Pros & Cons
Quick overview of strengths and weaknesses
DREAME L10s Ultra
- 10,000Pa suction cleans deeply into carpets and floors.
- Auto-empty base station holds debris for up to 75 days.
- Mops self-wash and dry with warm air in base station.
- Dual rotary mops scrub stubborn dirt under pressure.
- Requires a 2.4GHz network connection for operation.
- Small 300ml robot dustbin needs frequent base use.
- Large base station requires significant floor space.
DREAME L40 Ultra
- 25,000Pa suction power for thorough cleaning.
- Extendable brush and mop cleans corners and edges.
- Self-cleaning dock minimizes manual maintenance.
- Mop lifts 0.41in to avoid wetting carpets.
- Auto cleaning solution fill requires separate module.
- 2.4GHz Wi-Fi only; no 5GHz support.
Frequently Asked Questions
Common questions about this comparison
What is the main difference in suction power?
The L40 Ultra Gen 2 boasts 25,000Pa suction, which is 2.5 times more powerful than the L10s Ultra Gen 2's 10,000Pa, offering superior deep cleaning capability.
Which robot navigates more precisely?
The L40 Ultra Gen 2 utilizes LiDAR navigation for more accurate mapping and efficient cleaning paths, whereas the L10s Ultra Gen 2 uses camera navigation.
Can these robots avoid wetting carpets while mopping?
Yes, the L40 Ultra Gen 2 can lift its mop 0.41 inches to avoid wetting carpets. The L10s Ultra Gen 2 focuses on mop self-cleaning and warm air drying.
How long can the base station hold debris?
The L10s Ultra Gen 2's auto-empty base station can hold debris for up to 75 days, significantly reducing the frequency of bag changes.
Which model is better for cleaning edges and corners?
The L40 Ultra Gen 2 excels at edge cleaning due to its innovative extendable side brush and mop, designed to reach into tight spaces.
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