Ecovacs - Deebot T30 Omni vs Roborock - S9 MaxV Ultra
Between the Deebot T30 Omni and S9 MaxV Ultra, the Deebot T30 Omni comes out ahead in noise, while the S9 MaxV Ultra wins on suction and water tank. Overall, the Deebot T30 Omni scores 66.6 and the S9 MaxV Ultra scores 85.1 on our Mars Score.
Which should you buy?
The S9 MaxV Ultra is the clear pick on raw spec strength, leading by 18.5 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Deebot T30 Omni if you care most about noise. The biggest gaps in its favor are noise.
Pick the S9 MaxV Ultra if you care most about suction and water tank. Its strongest claims are suction, water tank.
Both ship with comparable mopping, lidar, battery life, so those specs don't separate the two — focus on the differences below.
Bottom line: the S9 MaxV Ultra is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Ecovacs - Deebot T30 Omni wins
- ▲Noise — 2.00 dB less. 63 vs 65.
Why Roborock - S9 MaxV Ultra wins
- ▲Suction — 100.00% more. 22000 Pa vs 11000 Pa.
- ▲Water tank — 42.86% more. 300 ml vs 210 ml.
Spec comparison
Cleaning
| Spec | Ecovacs - Deebot T30 Omni | Roborock - S9 MaxV Ultra |
|---|---|---|
| Suction | 11000 Pa | 22000 Palead |
| Mopping | true | true |
| Water tank | 210 ml | 300 mllead |
| Dustbin | 420 mllead | 350 ml |
| Carpet detection | true | true |
Navigation
| Spec | Ecovacs - Deebot T30 Omni | Roborock - S9 MaxV Ultra |
|---|---|---|
| Lidar | true | true |
| Camera navigation | true | true |
| AI obstacle avoidance | true | true |
| Max climb | 22 mm | 40 mmlead |
Autonomy
| Spec | Ecovacs - Deebot T30 Omni | Roborock - S9 MaxV Ultra |
|---|---|---|
| Battery life | 180 min | 180 min |
| Self-empty base | true | true |
| Self-wash mop | true | true |
| Self-dry mop | true | true |
| Noise | 63 dBlead | 65 dB |
Frequently asked
Which has stronger suction, Deebot T30 Omni or S9 MaxV Ultra?+
S9 MaxV Ultra delivers 22000 Pa vs 11000 Pa.
Do Deebot T30 Omni or S9 MaxV Ultra mop?+
Both can mop.
Which has a self-emptying base, Deebot T30 Omni or S9 MaxV Ultra?+
Both ship with a self-emptying base.
Spec-level deep dives
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