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Roborock S9 MaxV Ultra Review

Six months, two dogs, one very clean floor.

By Daniel Reyes, Smart Home Editor · Published August 11, 2026 · Updated August 12, 2026 · 2 min read

Robot vacuum docked on a timber floor

Photograph: Jens Mahnke / StockSnap

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We ran the S9 MaxV Ultra daily for six months in a 140 m² home with mixed flooring and two shedding dogs.

Cleaning

Hard-floor pickup was effectively complete in a single pass. On medium-pile carpet it left roughly 6% of embedded debris — good for a robot, short of a cordless.

Navigation and obstacles

It avoided every cable and shoe in our obstacle course, and crucially recognised a pet accident and routed around it.

The dock

Washing and drying the mop pads removes the job that kills most robot mops. You still empty the dust bag every six to eight weeks and descale monthly in hard-water areas.

Verdict

Expensive, and the only robot in our test group that ran for six months without requiring a rescue more than twice.

Pros

  • + Best-in-class obstacle avoidance
  • + Mop pads lift for carpet
  • + Dock handles almost everything

Cons

  • Expensive
  • Dock is physically large
  • App has a learning curve

Specifications

Suction
10,000 Pa
Dock functions
Empty, wash, dry, refill
Navigation
LiDAR + dual camera
Noise (max)
67 dB
Battery
6,400 mAh
Warranty
2 years

Methodology

Every product here was tested in a working home against standardised tasks. Scores are the mean of five measured criteria and are never adjusted for commercial reasons. How we test · How we review.

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