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- L40 Ultra AE vs QV 35S
Dreame L40 Ultra AE vs Roborock QV 35S
What L40 Ultra AE does better (4) and where QV 35S wins (2) — every spec side by side.
vs
7.5Cleaning power6.8
7.6Navigation5.8
7.4Mopping6.5
8.2Base station9.7
6.8Battery7.7
Dimensions
Size comparison
L40 Ultra AEQV 35S
| L40 Ultra AE | QV 35S | Difference | |
|---|---|---|---|
| Height | 97 mm | 96 mm | +1 mm |
| Width / diameter | 350 mm | 353 mm | −3 mm |
| Length | 350 mm | 353 mm | −3 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is L40 Ultra AE better than QV 35S?
- Obstacle avoidanceAI camera vs Basic sensors (infrared / bumper)
- Suction power19,000 Pa vs 10,000 Pa+90%
- Mop lift height10.5 mm vs 10 mm+5%
- Dustbin (robot)395 ml vs 330 ml+20%
Why is QV 35S better than L40 Ultra AE?
- Cleaning area per charge168 m² vs 330 m²+96%
- Noise level74 dB vs 64 dB+16%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 19,000 Pa | 10,000 Pa |
| Dustbin (robot) | 395 ml | 330 ml |
| Main brush | Single main brush | Single main brush |
| Anti-tangle brush | — | Yes |
| Side brushes | 1 | 1 |
| Carpet detection | Yes | Yes |
| Dirt detection | Yes | — |
| Noise level | 74 dB | 64 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Wall sensor, Cliff sensors, Ultrasonic sensor | LiDAR laser (LDS), Ultrasonic sensor |
| Obstacle avoidance | AI camera | Basic sensors (infrared / bumper) |
| Threshold climbing | 20 mm | 20 mm |
| No-go zones / virtual walls | Yes | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Rotating mop pads | Rotating mop pads |
| Mop lifting on carpets | Yes | Yes |
| Mop lift height | 10.5 mm | 10 mm |
| Extending mop (edges) | Yes | — |
| Water tank (robot) | — | 80 ml |
| Base station | ||
| Base station | All-in-one dock (empty + wash) | All-in-one dock (empty + wash) |
| Auto-empty dust station | Yes | Yes |
| Dust bag (dock) | 3.2 l | — |
| Mop washing in the dock | Yes | Yes |
| Hot-water mop washing | Yes | — |
| Hot-air mop drying | Yes | — |
| Automatic water refill | Yes | Yes |
| Plumbed water connection | Yes | — |
| Clean water tank (dock) | 4.5 l | — |
| Dirty water tank (dock) | 4 l | — |
| Battery & runtime | ||
| Battery capacity | 5,200 mAh | 5,200 mAh |
| Runtime | 180 min | 180 min |
| Charging time | 210 min | — |
| Cleaning area per charge | 168 m² | 330 m² |
| Recharge & resume | Yes | — |
| Size & weight | ||
| Width / diameter | 350 mm | 353 mm |
| Length | 350 mm | 353 mm |
| Height | 97 mm | 96 mm |
| Weight | 4 kg | — |
| Shape | Round | Round |
| Colours | Black | White |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant, Apple Siri | Amazon Alexa, Google Assistant, Apple Siri |
| Live camera view / video call | Yes | — |
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