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- L40 Ultra AE vs S8 Pro Ultra
Dreame L40 Ultra AE vs Roborock S8 Pro Ultra
What L40 Ultra AE does better (6) and where S8 Pro Ultra wins (3) — every spec side by side.
vs
7.5Cleaning power3.4
7.8Navigation6.7
7.5Mopping5.4
8.8Base station9.3
6.8Battery6.5
Dimensions
Size comparison
L40 Ultra AES8 Pro Ultra
| L40 Ultra AE | S8 Pro Ultra | Difference | |
|---|---|---|---|
| Height | 97 mm | 96 mm | +1 mm |
| Width / diameter | 350 mm | 350 mm | = |
| Length | 350 mm | 350 mm | = |
Drawn to the same scale from the official dimensions (front and side).
Why is L40 Ultra AE better than S8 Pro Ultra?
- Suction power19,000 Pa vs 4,000 Pa4.8×
- Obstacle avoidanceAI camera vs Basic sensors (infrared / bumper)
- Mop typeRotating mop pads vs Vibrating / sonic mop
- Mop lift height10.5 mm vs 5 mm2.1×
- Charging time210 min vs 360 min+71%
- Dustbin (robot)395 ml vs 350 ml+13%
Why is S8 Pro Ultra better than L40 Ultra AE?
- Threshold climbing20 mm vs 22 mm+10%
- Cleaning area per charge168 m² vs 300 m²+79%
- Noise level74 dB vs 67 dB+10%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 19,000 Pa | 4,000 Pa |
| Dustbin (robot) | 395 ml | 350 ml |
| Main brush | Single main brush | Dual main brushes |
| Side brushes | 1 | 1 |
| Carpet detection | Yes | Yes |
| Dirt detection | Yes | — |
| Noise level | 74 dB | 67 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Wall sensor, Cliff sensors, Ultrasonic sensor | LiDAR laser (LDS) |
| Obstacle avoidance | AI camera | Basic sensors (infrared / bumper) |
| Threshold climbing | 20 mm | 22 mm |
| No-go zones / virtual walls | Yes | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Rotating mop pads | Vibrating / sonic mop |
| Mop lifting on carpets | Yes | Yes |
| Mop lift height | 10.5 mm | 5 mm |
| Extending mop (edges) | Yes | — |
| Water tank (robot) | — | 200 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 | 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 | 360 min |
| Cleaning area per charge | 168 m² | 300 m² |
| Recharge & resume | Yes | Yes |
| Size & weight | ||
| Width / diameter | 350 mm | 350 mm |
| Length | 350 mm | 350 mm |
| Height | 97 mm | 96 mm |
| Weight | 4 kg | — |
| Shape | Round | Round |
| Colours | Black | Black |
| 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 | — |
| Remote control | — | Yes |
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