Maytronics Dolphin EON 120dIIIConditionalCompare

Released 2026.02Reassessed 2026.08.25Compare

Maytronics Dolphin EON 120d

Name: Maytronics Dolphin EON 120d
Brand: Maytronics

Cordless robotic pool cleaner built around DebrisLock, an automatic in-water backwash that trips when sensors detect the filter clogging and seals the dislodged debris in a separate compartment. Maytronics documents coverage of floor, walls and waterline, steps, sun ledge, corners and safety ledge, with operation in water as shallow as 8 inches, and rates the machine at up to 4 to 4.5 hours per charge with selectable 1.5, 2 and 2.5 hour cycles. The line launched in January 2026, so the field record is short.

List price

~~$1,199~~

Selling below list

See on Amazon

Some links earn Robovations a commission.

Released 2026.02Reassessed 2026.08.25

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 AutonomyCopes with everyday clutter and frees itself, shown by independent testing.
To reach Level IVIndependent testing shows it avoids ordinary obstacles before contact, copes without the space being cleared, and frees itself when stuck.
IIIConditional AutonomyThis robot

Maytronics Dolphin EON 120d finishes whole jobs in a space it already knows, and still needs a person at the edges.

Navigation and control

Smart mapping with autonomous floor/wall coverage
Why this level
- Smart mapping with cordless operation allows the Dolphin to navigate the pool floor and execute multi-cycle cleaning without operator intervention or tether dependence.
- Manufacturer specs document autonomous position-tracking.
- End-to-end cycle completion is independent of human teleoperator control, placing it at Conditional Autonomy.
Autonomy dimension 68 / 100 · No independent sources reviewed, 8 from the maker
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 on file.

PendingNo independent sources reviewed, 8 from the maker

Fewer than two independent sources reviewed. Evidence is still being collected. The word says how much we read. It is not a grade.

From the maker, reviewed8

Manufacturer documentation3 sources

CES 2026 Dolphin EON product launch; DebrisLock backwash system, smart mapping, cordless operation specs.

Specification sources4 sources

Pages the published specifications were read from.

Monitoring record1 source

Sources behind the tracker entries following this robot.

Maytronics Product Launch AnnouncementMaytronics Product Launch Announcement

On file, not yet reviewedNot counted

Firmware release notes1 source

Maytronics publishes firmware releases and software notes through its support portal; reviewed on an ongoing basis.

Maytronics Dolphin supportmaytronics.com

Also monitored, nothing listed yet

Press & video reviews

CES 2026 coverage of cordless pool-cleaner launch; autonomy and DebrisLock feature reporting.

Longitudinal signal

Owner reports and in-field reliability tracking post-Feb 2026 launch; battery performance and maintenance cadence.

How we evaluate evidence →

Human Readiness

Ready Now.

One question: what does buying this robot today walk you into? The state is computed from the record, and recomputed daily.

Ready NowThis robot

Maytronics Dolphin EON 120d is on sale, assessed, and nothing on its record argues for waiting.
How this was derived
- Shipping past the first-90-day ownership window with a published assessment, no documented issues on record, and no announced successor.
On the record
- Shipping since February 2026 · 9 months on the market
- Retail listings on file: Amazon
- No successor announced
- No independent sources reviewed, 8 from the maker
What would move it
A documented problem, an announced successor, or a withdrawn listing moves it out; the rating recomputes daily.
New to MarketOn sale under 90 days; the ownership record is still forming.
WaitA successor is announced and has not shipped; re-read the decision when it arrives.
Known IssuesDocumented problems stand on the record; read the case before buying.

How we assess readiness →

Robovations Score

How this number was reached

73of 100

StrongAt or above 81% of the 456 robots we scoreand 98% of the 65 scored robot pool cleaners

DeficientLimitedCapableStrongExemplary

Measured on 7 of the 9 inputs14% not counted

Our assessment did not establish an independent source for edge-case recovery, operating envelope on this machine, so those inputs are left out of the score rather than guessed at, and the rest re-weighted to fill the space. A gap in what we have been able to verify is not evidence against the robot. Where a whole pillar has nothing measured, we publish no number at all.

What moved itpoints gained or lost against a typical robot

Carried by

Routine maintenance84+1.9
Support longevity79+1.7

Capability40% of the score73What it does without you.

Task completion16% of the score75

Evidence

PCWorld's tester finished each cycle by hand: the robot has to be retrieved with a pole or the shake-activated "clicker," and emptying it was "a huge pain" that meant "painstakingly pick dozens of leaves out of the basket by hand, one by one, and even then the basket never felt fully clean," which PCWorld calls the machine's "fatal flaw." The cleaning cycle itself runs to the end unattended, so a human closes the loop every run rather than during it.

Coverage and navigation10% of the score70

Evidence

PCWorld measured a "95 percent cleaning rate" and found the robot "cleaned all around the pool, but it left a few leaves on steps and, especially, wasn't great in the corners, where debris was almost always left behind," adding that "the robot did hiccup in the same few spots consistently." Systematic coverage of the pool with a small set of regions missed the same way on every run.

Edge-case recoverynot countedno source verified50

Evidence

Self-recovers from a documented category failure mode without a human: sensors detect the filter clogging, DebrisLock backwashes in the water, and the cycle resumes. A loading filter stalls or degrades every other cleaner scored here. Held well below the top because it addresses that one mode only. No obstacle sensing, no entrapment recovery and no stall reporting appear anywhere, and a wedged cordless unit has no cable to haul it back by.

Operating envelopenot countedno source verified100

Evidence

Unusually broad for this category and specifically aimed at the conditions that constrain everything else here: in-ground and above-ground, kidney and resort-style geometry, tanning ledges, benches, steps and corners, water down to 8 inches, and heavy leaf load handled by backwashing rather than by pre-skimming. Three real limits: the run is bounded by the pack at 1.5, 2 or 2.5 hours with a lift-out to recharge, heavy leaf fall shortens the filter interval anyway, and the pack needs stored-charged discipline through the off-season.

Dependability40% of the score71Whether it keeps doing it.

Field failure rate16% of the score70

Evidence

Launched February 2026. The record says battery longevity and long-run reliability data for this generation do not exist, and this is a new cordless architecture for the maker with no pack service-life record. Early press testing put hands on a shipping unit, and no failure is documented. Maytronics carries no CPSC recall. Independent hands-on coverage with no documented failure is the 70 state.

Software stability14% of the score65

Evidence

The ordinary state. Maytronics runs a public support portal publishing firmware releases and software notes, so an update channel exists and is inspectable, and this is a Wi-Fi model that receives them. It cannot reach the twelve-month owner anchor because the machine is six months old, and no independent record of any update's effect exists. Neither stability nor instability is asserted.

Support longevity10% of the score79

Evidence

Maytronics runs the deepest parts and dealer channel in this category, brushes are replaced on condition as catalog items, and the machine ships with its caddy and an IP55 charger rather than as accessories. Marked well down from the corded Dolphins for one reason that matters most on a cordless machine: this is a first-generation cordless line, no warranty term appears anywhere in the record, and there is no published battery replacement price or service path for the part that will decide its service life.

Ownership burden20% of the score78What it asks of you.

Routine maintenance12% of the score84

Evidence

DebrisLock moves filter service from a per-cycle job to a weekly one, and that is a mechanism doing the work rather than an absence of work, which is the second lightest routine of any pool cleaner scored here. The rest is a monthly brush check and a deep rinse every 3 to 6 months. Deducted for a 24.3 lb lift out to the caddy for every charge, off-season pack discipline, and early press testing finding a leaf-packed filter awkward to clear by hand, so the work is reduced rather than removed.

Consumables8% of the score69

Evidence

Nothing is on a schedule: the filter is rinsed and reused with no published replacement interval, and brushes are replaced when the bristles splay rather than on a calendar, both through a wide catalog. The deduction is the pack. Maytronics publishes no replacement price and no service path for it, so on a $1,199 cordless machine the single most expensive wear item is the one the owner cannot plan for.

middle half of the databaseits medianthis robot

Reported, not scoredneither measures how well the robot works

Five-year cost$1,600

mid to upper for robotic pool cleaners at $1,199, plus an estimated $400 over five years in brushes, filter parts and pack service, none of which Maytronics prices for this line; no subscription

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 Maytronics Dolphin EON 120d work in your pool?

Describe your pool using the controls. Each choice reads the spec sheet for you, flagging where the Maytronics Dolphin EON 120d is built for your space and where it isn’t.

Pool type

Pool size

Debris load

Coverage you want

See every pool cleaner suited to these conditions

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

OWNERSHIP

Living with it.

Cordless debut with smart mapping; owner field data absent.

Unprovenowner-reported arc

The record so far

Manufacturer reports specify DebrisLock backwash and autonomous coverage claims. No published firmware changelog, recall notices, or longitudinal owner reports available to assess in-service reliability or failure patterns.

What goes wrongnot yet documented independently

The independent record is still forming. Failure modes are listed once an outside source reports them.

Upkeep routine

Weekly52×/yr

Lift the robot out, open the compartment, empty it and rinse with a hose. Maytronics states DebrisLock's in-water backwash moves this from a daily job to a weekly one, though heavy leaf fall shortens the interval.

Monthly12×/yr

Brush wear check; replace bristles if splayed.

Seasonal4×/yr

Deep rinse the assembly.

Store the battery charged, not drained, and top it up periodically through the off-season; keep the robot and charger in a dry location.

Cost over time

$1,199 to buy. Ongoing running cost for this model hasn’t been assessed yet.

Safety notes2 notes

Cordless dock power exposureOutdoor dock requires GFCI protection and weatherproof enclosure.
Deep-water entanglement riskAutonomous navigation may exceed operator depth awareness in deep ends.

SPECIFICATION

The full spec sheet.

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

Dimensional drawing

Key specificationsManufacturer-publishedSources: Owner manual Product page

FootprintThe width, depth and height of the robot itself, without its dock.: 16.2 × 17.7 in, 11.1 in tall•
WeightThe robot alone, without its dock, as the maker states it.: 24.3 lbs•
Wi-FiThe bands the robot can join; many models need a 2.4 GHz network to set up.: Supported✓
Max pool length: 50 ft•
Cycle length: 120 min•
Power type: Cordless battery✓

Where it lands · position among 76 robot pool cleanersThis robotMedianTypical range

RuntimeThe maker's stated running time on one charge, at a standard setting.240min

90 min1,800 min

Bottom of range

PriceThe maker's list price, not a price found in a shop.$1,199

$299$4,250

Near median

Charge timeTime from empty to full on the dock, as the maker states it.270min

150 min390 min

Near median

WeightThe robot alone, without its dock, as the maker states it.24.3lbs

7.9 lbs46.3 lbs

Near median

Position shows where the figure sits across the tracked category, not a quality judgment.

Official referencesOwner manual Product page

RECORD

How the assessment has moved.

Every announcement, release and reassessment behind the current classification.

Coming soon

Just launched

Active updates

Settled

Discontinued

Sep 2026 · AssessmentRobovations Score revised 71 → 73
Sep 2026 · AssessmentRecord status: Verified → Pending
Aug 2026 · AssessmentReadiness reassessed: Promising Progress → Ready Now
Aug 2026 · AssessmentRecord status: Provisional → Verified
Aug 2026 · AssessmentRobovations Score rescored under v4.2: 65 → 71
Jul 2026 · AssessmentRobovations Score recorded at 65 of 100
Feb 2026 · ReleaseDolphin EON 120d reaches retail at $1,199 after CES 2026 debut
Jan 2026 · AnnouncementMaytronics unveils Dolphin EON 120d cordless pool cleaner at CES 2026

Editorial comparisons

How Maytronics Dolphin EON 120d compares.

All comparisons →

Goal-based

Seen half under and half over the water of a pool, a grey robot cleaner works across a shallow sun ledge in water so shallow that its black top stands out of the surface, beside the ledge's gold-edged lip and the steps down into the deep water.

Robot Pool Cleaners4 robots

Cordless Robot Pool Cleaners: Which One Fits Your Pool?

MOVA's Rover X10, Aiper's Scuba V3 Ultra, Beatbot's Sora 70 and Maytronics' Dolphin EON 120d are cordless pool robots with different documented coverage, filtration and retrieval mechanisms.

vs MOVA Rover X10 · Aiper Scuba V3 Ultra · Beatbot Sora 70

Tech shift

At the shallow end of a backyard pool, a grey robot pool cleaner keeps working under the water on the sun ledge while a black one sits out on the deck, its filter basket pulled out and rinsing under a garden hose.

Robot Pool Cleaners2 robots

Robot pool cleaner filters: backwash valve or cartridge?

Two cordless pool robots at similar price points split on how they handle debris capacity. Maytronics routes debris through a backwash valve; Beatbot relies on a washable cartridge.

vs Beatbot AquaSense 2

Goal-based

A long pool cut open at its shallow end, seen at the waterline in the early evening: on the floor, three cordless robots are still cutting clean lanes through the silt of the day with bubbles rising off them, while the Wybot C1 has stopped at the end of a short lane with silt and leaves still ahead of it.

Robot Pool Cleaners4 robots

Cordless pool robots for large pools: does the battery last the whole job?

Four cordless pool robots, one recurring problem: the pool is larger than a single charge covers.

vs Beatbot AquaSense X · Aiper Scuba X1 Pro Max · Wybot C1

Questions

What people actually ask.

5 answered

OperationDoes the Dolphin EON 120d work in above-ground pools?

Yes. Maytronics lists the pool type for the EON 120d as in ground and above ground. The robot is cordless and self-contained, so it does not depend on anything in the pool’s plumbing or on a fixed installation.

OwnershipHow often do I clean the DebrisLock filter?

DebrisLock backwashes itself. Sensors detect a clogging filter and trigger the backwash while the robot is still in the water, sealing the dislodged debris in a separate compartment. Maytronics states this moves filter emptying from a daily job to a weekly one compared with other robotic cleaners. Heavy leaf fall shortens that interval.

OperationWhat is the runtime on a single charge?

Maytronics states up to 4 to 4.5 hours. Cleaning cycles are selectable at 1.5, 2 and 2.5 hours, with 2 hours the default, and an UltraRun eco mode is rated at up to 2.5 weeks of cleaning per charge. A review reports a 9600 mAh cell.

OperationIs there a dock, and does anything need to be plumbed or wired at the pool?

No. The EON 120d is cordless and ships with a caddy and a separate IP55 charger. The robot is lifted out of the pool and charged off-pool. There is no in-pool dock, no power connection at the water and no plumbing.

OperationWhat does the robot cover besides the floor?

Maytronics documents floor, walls and waterline, steps, sun ledge, corners and safety ledge. The EON line is rated to work in water as shallow as 8 inches, which is what puts tanning ledges, benches and steps inside its range.

Availability

Where it's sold

Some links earn Robovations a commission. It does not change any classification. Affiliate disclosure.

Amazon Check price & availability

Cite & Embed

Reference the Maytronics Dolphin EON 120d classification.

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Citation

Robovations. "Maytronics Dolphin EON 120d: Autonomy Level III (Conditional Autonomy)." Autonomy Ladder™, assessed August 2026. https://robovations.com/robots/maytronics-dolphin-eon-120d/

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Where to next

Three ways to keep going.

For evaluators

Compare with a peer.

See the Maytronics Dolphin EON 120d and Beatbot AquaSense 2 side by side: autonomy level, Robovations Score, readiness, and price. Classification, not a verdict.

See the full comparison

Or compare with Polaris 9650iQ Sport, Aiper Scuba V3, Maytronics Dolphin Liberty 300.

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 every Level III robot

Updated weekly with new entries and reclassifications.

Maytronics Dolphin EON 120d

Will the Maytronics Dolphin EON 120d work in your pool?

Living with it.

The full spec sheet.

How the assessment has moved.

How Maytronics Dolphin EON 120d compares.

Cordless Robot Pool Cleaners: Which One Fits Your Pool?

Robot pool cleaner filters: backwash valve or cartridge?

Cordless pool robots for large pools: does the battery last the whole job?

What people actually ask.