RELEASED 2024.11REASSESSED 2026.08.08

3i S10 Ultra

Name: 3i S10 Ultra
Brand: 3i

The WaterRecycle dock is the distinctive feature, distills mop water, eliminating clean/dirty tank refills. 13,000 Pa suction and extendable mop pads meet category expectations. New manufacturer is the reliability unknown.

Price$1,299 maker’s listNo retailer listing

Autonomy Ladder

Why Level III.

One five-rung scale, every category, from acting only on command to working unsupervised anywhere.

VGeneralized AutonomyAny task, any setting. No consumer robot has reached it.
IVEnvironmental AutonomyHandles new obstacles and re-plans in real time; rare in consumer products.
To reach Level IVSustained operation across sessions, including layouts and conditions it has not met before.
IIIConditional AutonomyThis robot

3i S10 Ultra finishes whole jobs in a space it already knows, and still needs a person at the edges.

Navigation and control
LiDAR + AI obstacle avoidance
Why this level
- LiDAR + AI avoidance reported by manufacturer.
- Navigates multi-room home, creates digital map, schedules cleaning autonomously.
- No teleop fallback documented.
- Classified at Level III: Conditional Autonomy, handles routine environments with known map, occasional navigation failures expected.
Autonomy dimension 78 / 100 · 4 sources reviewed
IIAssisted AutonomyRuns preset routines; stalls at anything new.
IManual AutomationOne action on command; no independent operation.

How we assign a level →

Behind the classification

Sources we reviewed.

Provisional4 sources reviewed

Enough has been reviewed to classify, but gaps remain across source types.

Sources reviewed

Manufacturer documentation1 sourceReviewed

Official product page, spec sheet, dock manual cover core features and consumable cadence.

3i S10 Ultra product page3i

Specification sources1 sourceReviewed

Pages the published specifications were read from.

us.3itech.comus.3itech.com

Monitoring record2 sourcesReviewed

Sources behind the tracker entries following this robot.

Also monitored, nothing listed yet

Press & video reviewsOngoing

Early launch coverage from tech outlets documenting the WaterRecycle dock innovation and initial performance.

Owner reportsOngoing

Sparse early-user feedback from Reddit, Facebook owner groups; limited longitudinal data given Jan 2025 release.

Longitudinal signalPending

Firmware update cadence and dock reliability arc will be tracked over 6+ months to refine reliability scoring.

How we evaluate evidence →

Robovations Score

How this number was reached

69of 100

Capable

DeficientLimitedCapableStrongExemplary

Held below its arithmetic70 → 69

Capped at 69: a Strong rating requires every pillar at 55 or above (dependability below the floor).

Capability40% of the score78What it does without you.

Task completion16% of the score91

Evidence

The UltraReach roller extends sideways to reach edges and corners, which is a job step fixed round pads do not finish, and the dock empties, washes, dries and refills without the owner touching water. Held to the 75 band by two independent findings in Vacuum Wars' review, that carpet pickup falls short of what the rated suction implies and that object avoidance could be more reliable, plus the record's own note that consecutive mopping runs wait hours on the distillation cycle.

Coverage and navigation10% of the score91

Evidence

LiDAR with AI avoidance builds and retains a map and runs systematic multi-room passes, and no reviewer reports missed regions. Held below the flagships because 3i publishes no full-charge runtime, so per-session coverage of a large home cannot be stated, and Vacuum Wars found the app short on advanced controls, which is the surface an owner uses to correct a map after a change.

Edge-case recovery10% of the score46

Evidence

Vacuum Wars' independent review states object avoidance could be more reliable, so the machine meets its category's documented failure modes more often than a flagship does. The record carries no recovery_behavior section at all, and states that dock clogging appears in early user forums with no standardized remediation from support, so there is no evidence it resumes at the interruption point rather than waiting for a human.

Operating envelope4% of the score70

Evidence

Carpet is a documented degradation on independent testing, high-pile handling is explicitly unconfirmed in the record, and back-to-back mopping is constrained by a distillation cycle that can run for hours. The offsetting strength is real: because the dock makes its own water it needs no plumbing and no drain, so placement is unusually free.

Dependability40% of the score53Whether it keeps doing it.

Field failure rate16% of the score56

Evidence

Roughly 17 to 21 months on sale, so the under-12-month cap does not apply, and there is no recall and no documented systemic defect. But 3i is a first-time robot manufacturer, the record states owner reports are sparse with no longitudinal data, and WaterRecycle is a first-generation distillation subsystem with no field durability record at all. Absence of a failure record here is absence of evidence, not absence of failure, and that is what holds this below the proven lines.

Software stability14% of the score65

Evidence

The machine has a live update channel: Wi-Fi, an app, Matter, Google Home and Alexa, and the record's own longitudinal source names firmware update cadence as something it intends to track, so updates ship. Beyond that the record is silent in both directions. 3i publishes no changelog, Vacuum Wars comments on the app's current feature set but not on what any update changed, and no owner reports a regression. That silence asserts neither stability nor instability, which is the honest reading here.

Support longevity10% of the score32

Evidence

Scored as commitments, and the commitments are thin. Distribution is 3i direct at us.3itech.com plus select resellers, with no published parts catalogue for the WaterRecycle distillation unit, no third-party repair channel and no independent parts supply such as the iFixit stock that exists for the established brands. The record names the exposure itself: if the dock fails post-warranty, parts and support depth are unknown.

Ownership burden20% of the score86What it asks of you.

Routine maintenance12% of the score100

Evidence

The WaterRecycle dock distils waste water back into clean water, which removes the clean-water refill and the dirty-water dump outright, and those are the largest recurring hands-on tasks on every other all-in-one dock in this category. This is an achievement of the machine rather than an absence of hardware: the dock does more work, not less. What remains is a weekly roller and scraper inspection, monthly dock seal and water-line cleaning, a periodic bag, and an annual descale in hard-water areas.

Consumables8% of the score66

Evidence

Side brush at about $15 every three to six months, main brush at about $30, a dock dust bag, and the roller mop, for which 3i publishes no replacement interval at all, so the cadence of the defining consumable is undocumented. Everything is single-source from a two-year-old manufacturer with no third-party equivalents, which puts both price and availability at the vendor's discretion.

Reported, not scoredneither measures how well the robot works

Five-year cost$1,799

Upper third for robot vacuums. About $1,299 at purchase plus roughly $100 a year in bags, brushes and roller replacement, though the roller interval is not published so that figure is an estimate rather than a schedule. No subscription. Not counted here, because it is a risk rather than a cost line: the distillation unit has no published parts channel, so a post-warranty dock fault may have no price at all.

Data postureCloud-linked

Account required. Maps and telemetry leave the home; core function survives an outage.

What leaves the homeNot documented

Read the full methodology →

FIT CHECK

Will the 3i S10 Ultra work in your home?

Describe your home using the controls. Each choice reads the spec sheet for you, flagging where the 3i S10 Ultra is built for your space and where it isn’t.

Home size

Primary floors

Mopping needs

You want to…

A classification of fit for the conditions you set, not a recommendation. Verdicts describe engineering design intent, not test results.

SPECIFICATION

The full spec sheet.

Priced above the category median, with every figure charted against the category below.

Dimensional drawing

Key specificationsManufacturer-published

Footprint: 14.5 × 14.2 in · 4.4 in tall✓
Weight: 6.8 lbs
Wi-Fi: 2.4 GHz only✓
Voice: Google Home, Alexa, Matter✓

Where it lands · ranked across 200 robot vacuumsThis robotMedianTypical range

Suction13,000Pamode not stated

1,000 Pa36,000 Pa

Near median

Price$1,299

$120$2,599

Above median

Weight6.8lbs

3.3 lbs36.4 lbs

Below median

Position shows where the figure sits across the tracked category, not a quality judgment. Suction in Pascals has no standard test method, and the published figure is a peak-mode claim, so it is comparable only within a brand and generation.

Official referencesProduct page

OWNERSHIP

Living with it.

Early evidence suggests competent navigation and dock reliability; WaterRecycle durability is unproven at scale.

Jan 2025 launch provides <6 months of field data. Owner forums report routine operation; dock water quality and seal longevity lack documented failure patterns. Early firmware cadence is typical for a new launch.

Owner effort~45 minhands-on per month

Consumables$120replaceable parts / yr

Reliability trendUnprovenowner-reported arc

What goes wrong · 4 documented · 0 self-recover

Common

Mop pad tangle or discolorReduced cleaning scrubbing action

Owner fixRinse or replace pads weekly; detergent optional

Occasional

Water cartridge cloggingPrevents auto-refill; manual bypass needed

Owner fixMonthly cartridge swap; cleaning per manufacturer guide

Occasional

Dock seal moisturePotential mold or odor in recirculated water

Owner fixMonthly water tank rinse; check seals monthly

Rare

Navigation drift in very large open spacesMissed coverage areas on return passes

Owner fixRe-trigger map creation; check for reflective surfaces

Step-by-step fixesAuto-Empty Base Not Emptying?Won’t Return to Its Dock or Charge?App Says Offline or Won’t Connect?All robot vacuum guides

Upkeep routine

Weekly52×/yr

Inspect the roller mop for hair tangles and discoloration; the dock washes it between runs.

Monthly12×/yr

Clean dock seals and water lines.

Yearly1×/yr

Descale water lines if hard-water minerals accumulate; filter swap if dust buildup is heavy.

As neededno fixed schedule

Replace the dock dust bag; 3i markets roughly 60 days of hands-free operation between interventions. · Replace side brush (~$15), main brush if matted (~$30).

Cost over time · past the sticker

PurchaseRunning cost

Year 1

$1,419

Year 3

$1,659

Year 5

$1,899

$1,299 to buy, then about $120 a year for the replaceable parts below. Over three years that is roughly $360 past the sticker price. Excludes electricity and any repairs.

What you replace

Dust bagPeriodically
Side brushEvery 3–6 months$15

Replacement cadence from the maintenance schedule; prices shown where the source documents them.

Safety notes

CautionWater spillage at dock during washing: Dock water level may overflow if overfilled; place on waterproof mat or in tile areas.

NoteMop lift timing on thick-pile transition: Mop may not lift fast enough entering thick carpet; no-mop zones recommended for shag areas.

RECORD

How the assessment has moved.

Every announcement, release and reassessment behind the current classification.

Coming soon

Just launched

Active updates

Settled

Discontinued

Jan 2025 · AnnouncementUnveiled at CES 2025 with WaterRecycle dock
Feb 2025 · ReleaseBegins shipping in North American market
Jul 2026 · AssessmentRobovations Score recorded at 61 of 100
Jul 2026 · AssessmentRobovations Score revised 61 → 74
Aug 2026 · AssessmentRobovations Score rescored under v4.2: 74 → 69

Common questions

What people actually ask.

6 answered

OperationDoes the 3i S10 Ultra require any water-tank refills?

No. The WaterRecycle dock distills wastewater back into purified water and refills the robot from it, which is why the machine needs no plumbing. 3i publishes no cartridge or water-filter interval for the system; the documented consumables are the dust bag, the roller mop and the brushes.

OperationHow much suction loss occurs when the mop lifts on hard floors?

3i’s own channels carry two figures for this model, 13,000 Pa and 18,000 Pa; the record stores 13,000 Pa. Mop-lift impact on suction is undocumented in either listing.

CompatibilityCan the 3i app integrate with Matter or other smart home platforms?

Manufacturer reports Matter support. Google Home and Alexa are listed; smart home integrations are reported as functional by early users.

OwnershipWhat is the actual floor-coverage per session on multi-floor homes?

3i does not publish a full-charge runtime, so per-session coverage cannot be stated. It depends on square footage, floor mix and how often the robot returns to the dock to wash the mop. 3i markets the system as running roughly 60 days between owner interventions.

OperationDoes the extendable mop arm extend across the entire footprint, or just the side edge?

The UltraReach mop extends sideways to cover edges and corners. Full-width extension is not documented; edge coverage is the primary use case.

OperationIs the 3i S10 Ultra available in North America, or only APAC?

North American availability confirmed via the US manufacturer site (us.3itech.com). Shipping direct and through select resellers; availability as of June 2026 is confirmed.

Cite / Embed

Reference the 3i S10 Ultra classification.

Embed the Autonomy Ladder™ mark or copy the citation. The mark is served from this record rather than saved as a file, so it always shows the level we currently hold. If we reassess, it updates on your page by itself.

<a href="https://robovations.com/robots/3i-s10-ultra/?ref=badge" target="_blank" rel="noopener"><img src="https://robovations.com/badge/r/3i-s10-ultra/seal-light" width="268" height="124" loading="lazy" alt="Autonomy Ladder classification for 3i S10 Ultra, assessed by Robovations." /></a>

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Citation

Robovations. "3i S10 Ultra: Autonomy Level III (Conditional Autonomy)." Autonomy Ladder™, assessed August 2026. https://robovations.com/robots/3i-s10-ultra/

Where to next

Three ways to keep going.

For evaluators

Compare with a peer.

See the 3i S10 Ultra and Matic Robot Vacuum side by side: autonomy level, Robovations Score, readiness, and price. Classification, not a verdict.

See the full comparison

Or compare with Ecovacs Deebot T30S Combo, Roborock Qrevo MaxV, Dreame L40 Ultra.

For browsers

See every Level III.

Every robot we’ve classified at conditional autonomy. Sorted by readiness, score, and price. Filter by category, manufacturer, or release date.

Browse the database

Updated weekly with new entries and reclassifications.

3i S10 Ultra

Will the 3i S10 Ultra work in your home?

The full spec sheet.

Living with it.

How the assessment has moved.

What people actually ask.

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Reference the 3i S10 Ultra classification.

Three ways to keep going.

Get the next reassessment.

Compare with a peer.

See every Level III.