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- L20 Ultra vs S8+
Dreame L20 Ultra vs Roborock S8+
What L20 Ultra does better (9) and where S8+ wins (3) — every spec side by side.
Dimensions
Size comparison
L20 UltraS8+
| L20 Ultra | S8+ | Difference | |
|---|---|---|---|
| Height | 104 mm | 97 mm | +7 mm |
| Width / diameter | 350 mm | 353 mm | −3 mm |
| Length | 350 mm | 353 mm | −3 mm |
| Weight | 4.3 kg | 4.7 kg | −0.4 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is L20 Ultra better than S8+?
- Suction power7,000 Pa vs 2,500 Pa2.8×
- Obstacle avoidanceAI camera + 3D structured light vs Basic sensors (infrared / bumper)
- Mop typeRotating mop pads vs Vibrating / sonic mop
- Base stationAll-in-one dock (empty + wash) vs Auto-empty dock
- Runtime260 min vs 180 min+44%
- Battery capacity6,400 mAh vs 5,200 mAh+23%
- Charging time270 min vs 360 min+33%
- Dust bag (dock)3.2 l vs 2.5 l+28%
- Noise level63 dB vs 67 dB+6%
Why is S8+ better than L20 Ultra?
- Water tank (robot)80 ml vs 300 ml3.8×
- Height104 mm vs 97 mm+7%
- Dustbin (robot)300 ml vs 470 ml+57%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 7,000 Pa | 2,500 Pa |
| Dustbin (robot) | 300 ml | 470 ml |
| Main brush | Single main brush | Single main brush |
| Side brushes | 1 | 1 |
| Carpet detection | Yes | Yes |
| Dirt detection | Yes | — |
| HEPA filter | Yes | — |
| Noise level | 63 dB | 67 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Wall sensor | LiDAR laser (LDS), Cliff sensors, Ultrasonic sensor |
| Obstacle avoidance | AI camera + 3D structured light | Basic sensors (infrared / bumper) |
| 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 |
| Mop lift height | — | 5 mm |
| Automatic mop removal | Yes | — |
| Extending mop (edges) | Yes | — |
| Water tank (robot) | 80 ml | 300 ml |
| Base station | ||
| Base station | All-in-one dock (empty + wash) | Auto-empty dock |
| Auto-empty dust station | Yes | Yes |
| Dust bag (dock) | 3.2 l | 2.5 l |
| Mop washing in the dock | Yes | Yes |
| Hot-air mop drying | Yes | — |
| Automatic water refill | Yes | — |
| Plumbed water connection | Yes | — |
| Clean water tank (dock) | 4.5 l | — |
| Dirty water tank (dock) | 4 l | — |
| Battery & runtime | ||
| Battery capacity | 6,400 mAh | 5,200 mAh |
| Runtime | 260 min | 180 min |
| Charging time | 270 min | 360 min |
| Cleaning area per charge | — | 200 m² |
| Size & weight | ||
| Width / diameter | 350 mm | 353 mm |
| Length | 350 mm | 353 mm |
| Height | 104 mm | 97 mm |
| Weight | 4.3 kg | 4.7 kg |
| Shape | Round | Round |
| Colours | White | White |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant | Amazon Alexa, Google Assistant, Apple Siri |
| Remote control | Yes | — |
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