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- D9 Max vs S9
Dreame D9 Max vs Viomi S9
What D9 Max does better (2) and where S9 wins (0) — every spec side by side.
Why is D9 Max better than S9?
- Dustbin (robot)570 ml vs 300 ml+90%
- Water tank (robot)270 ml vs 250 ml+8%
Why is S9 better than D9 Max?
S9 has no measurable advantages in this pair.
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 4,000 Pa | — |
| Dustbin (robot) | 570 ml | 300 ml |
| Main brush | Single main brush | — |
| Side brushes | 1 | — |
| Carpet detection | Yes | — |
| HEPA filter | Yes | — |
| Noise level | 60 dB | — |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Cliff sensors | LiDAR laser (LDS) |
| Obstacle avoidance | Basic sensors (infrared / bumper) | — |
| Threshold climbing | 20 mm | — |
| No-go zones / virtual walls | Yes | — |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Water tank (robot) | 270 ml | 250 ml |
| Base station | ||
| Base station | Charging dock | Charging dock |
| Battery & runtime | ||
| Battery capacity | 5,200 mAh | — |
| Runtime | 150 min | — |
| Charging time | 360 min | 360 min |
| Cleaning area per charge | 250 m² | — |
| Size & weight | ||
| Weight | 3.8 kg | — |
| Shape | Round | Round |
| Colours | Black | White |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant | — |
