Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Roborock - S9 MaxV Ultra | Wyze - Robot Vacuum Pro |
|---|---|---|
| Suction | 22000 Pa | 3000 Pa |
| Water tank | 300 ml | 180 ml |
| Battery life | 180 min | 120 min |
| AI obstacle avoidance | true | false |
Between the S9 MaxV Ultra and Robot Vacuum Pro, the S9 MaxV Ultra comes out ahead in suction / water tank, while the Robot Vacuum Pro wins on several specs. Overall, the S9 MaxV Ultra scores 88 and the Robot Vacuum Pro scores 74.1 on our Mars Score.
Which should you buy?
The S9 MaxV Ultra is the clear pick on raw spec strength, leading by 13.9 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 S9 MaxV Ultra if you care most about suction / water tank. The biggest gaps in its favor are suction, water tank, battery life, among others. The single most decisive one: Suction — 633.33% more. 22000 Pa vs 3000 Pa.
The Robot Vacuum Pro similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable mopping, lidar, self-empty base, so those specs do not 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.
Which should you buy: Roborock - S9 MaxV Ultra or Wyze - Robot Vacuum Pro?
Roborock - S9 MaxV Ultra leads the current Mars Score by 13.9 points.The more useful decision is the trade-off behind that result: compare suction, battery life against the way you will actually use the product.
Choose Roborock - S9 MaxV Ultra if…
Roborock - S9 MaxV Ultra has the measurable edge on suction pa, water tank capacity ml, battery life min.
Choose Wyze - Robot Vacuum Pro if…
Wyze - Robot Vacuum Pro does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Roborock - S9 MaxV Ultra wins
- ▲Suction — 633.33% more. 22000 Pa vs 3000 Pa.
- ▲Water tank — 66.67% more. 300 ml vs 180 ml.
- ▲Battery life — 50.00% more. 180 min vs 120 min.
- ▲Has AI obstacle avoidance.
Why Wyze - Robot Vacuum Pro wins
- No decisive advantages.
Spec comparison
Cleaning
| Spec | Roborock - S9 MaxV Ultra | Wyze - Robot Vacuum Pro |
|---|---|---|
| Suction | 22000 Palead | 3000 Pa |
| Mopping | true | true |
| Water tank | 300 mllead | 180 ml |
| Dustbin | 350 ml | 350 ml |
| Carpet detection | true | true |
Navigation
| Spec | Roborock - S9 MaxV Ultra | Wyze - Robot Vacuum Pro |
|---|---|---|
| Lidar | true | true |
| Camera navigation | true | true |
| AI obstacle avoidance | truelead | false |
| Max climb | 40 mmlead | 18 mm |
Autonomy
| Spec | Roborock - S9 MaxV Ultra | Wyze - Robot Vacuum Pro |
|---|---|---|
| Battery life | 180 minlead | 120 min |
| Self-empty base | true | true |
| Self-wash mop | truelead | false |
| Self-dry mop | truelead | false |
| Noise | 65 dB | 65 dB |
Frequently asked
Which has stronger suction, S9 MaxV Ultra or Robot Vacuum Pro?+
S9 MaxV Ultra delivers 22000 Pa vs 3000 Pa.
Do S9 MaxV Ultra or Robot Vacuum Pro mop?+
Both can mop.
Which has a self-emptying base, S9 MaxV Ultra or Robot Vacuum Pro?+
Both ship with a self-emptying base.