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Robot Autonomy, Classified
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ComparisonMaytronics Dolphin Liberty 300 and Maytronics Dolphin EON 120d

Up to three

All robot pool cleaners. Every figure below is placed against the whole class, so a gap can be read against how much the class itself varies.

Where each one suits you.

The conditions each robot was assessed against, side by side. Rows marked in gold are where these machines genuinely differ.

Fit verdicts by condition for each robot
Condition Dolphin Liberty 300 Dolphin EON 120d
Pool type
In-ground GoodMagnetic dock and climbing capability optimized for standard in-ground installations. GoodCordless design assumes permanent dock at pool edge; in-ground installation is the primary market.
Above-ground PoorCordless form factor and dock design not suited to above-ground frame geometries. PoorCordless dock requires stable, integrated placement; above-ground pools lack power infrastructure for dock installation.
Mixed setup GoodStandard cordless pool cleaner fit for any standard pool type. GoodIn-ground preferred; above-ground not supported per current documentation.
Pool size
Small (< 400 sqft) GoodBelow documented range; cordless design and dock footprint may exceed needs for pools under 8,000 gallons. GoodMSRP $1,199 targets larger pools; smaller pools may find similar coverage in lower-tier cordless models.
Medium (400 – 800) GoodManufacturer-targeted range of 12,000-20,000 gallons; runtime and coverage align with medium pool cycle expectations. Good12,000–25,000 gallons aligns with manufacturer documentation and DebrisLock design specifications.
Large (> 800)they differ DependsPools above 25,000 gallons may require multiple charge cycles per pass; heavy debris load shortens cartridge intervals. GoodSmart mapping supports multi-session coverage for pools over 25,000 gallons; runtime per cycle undocumented.
Debris load
Fine (sand / silt) GoodFilter-cartridge design handles fine sediment; weekly rinse maintains suction for sand and silt. GoodStandard filters and backwash handle algae and fine particles; DebrisLock not primarily designed for fine debris.
Leaves / large debristhey differ DependsCartridge clogging accelerates with heavy leaf fall; pre-skimming recommended during peak shedding season. GoodDebrisLock backwash system engineered specifically for leaf and organic debris volume without filter clogging.
Algae / heavy fouling DependsCleaner removes settled algae; active algae blooms require chemical treatment. Cartridge washings increase with algae frequency. DependsAlgae requires chemical treatment and brush scrubbing; Dolphin handles removal but does not address root cause.
Coverage you want
Floor only GoodPrimary documented function with predictable floor coverage per cycle. GoodSmart mapping documented for floor-only coverage patterns; baseline autonomy performance.
Floor + walls GoodWall-climbing capability documented; sustained waterline reach varies by pool condition and cleaner pitch. GoodEON 120d reaches walls per manufacturer specs; waterline and tanning-ledge coverage included.
Floor + walls + waterline DependsWaterline brush reach documented but performance on calcium buildup and algae line varies; depends on pool chemistry. DependsWaterline reach confirmed; full waterline scrub cadence depends on smart-map programming and documented test cycles.

A robot being poor for a condition is a fact about fit, not a fault. “Depends” means the record names a limit worth reading, not that the answer is unknown.

Keep going.

The full recordMaytronics Dolphin Liberty 300Specifications, evidence, the Fit Check in full, and every tracked change.The full recordMaytronics Dolphin EON 120dSpecifications, evidence, the Fit Check in full, and every tracked change.

Robovations classifies robots; it does not rank them. Nothing on this page is a recommendation, and no manufacturer influences a classification or its placement here.