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ComparisonMaytronics Dolphin Liberty 300 and Polaris 9650iQ Sport

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 Polaris 9650iQ Sport
Pool type
In-ground GoodMagnetic dock and climbing capability optimized for standard in-ground installations. GoodDesigned and documented exclusively for in-ground pools; plaster and gunite verified by manufacturer.
Above-ground PoorCordless form factor and dock design not suited to above-ground frame geometries. PoorManufacturer documentation restricts use to in-ground pools; above-ground vinyl liner walls risk brush abrasion.
Mixed setupthey differ GoodStandard cordless pool cleaner fit for any standard pool type. DependsIf your pool mix includes any above-ground vinyl liner pools, the 9650iQ Sport is not rated for those installations.
Pool size
Small (< 400 sqft) GoodBelow documented range; cordless design and dock footprint may exceed needs for pools under 8,000 gallons. GoodCapable in small pools but 60-foot cable generates excess slack; turning radius creates coverage gaps in tight footprints.
Medium (400 – 800) GoodManufacturer-targeted range of 12,000-20,000 gallons; runtime and coverage align with medium pool cycle expectations. GoodSized and runtime-calibrated for mid-range in-ground pools; systematic path covers 15,000-25,000 gallons in a standard 2.5-hour cycle.
Large (> 800)they differ DependsPools above 25,000 gallons may require multiple charge cycles per pass; heavy debris load shortens cartridge intervals. GoodFour-wheel drive and extended runtime handle large in-ground pools; very large pools over 40,000 gallons may require a second cleaning cycle.
Debris load
Fine (sand / silt) GoodFilter-cartridge design handles fine sediment; weekly rinse maintains suction for sand and silt. Good70-micron fine filter canister captures algae and fine particulates that standard bag filters pass through.
Leaves / large debristhey differ DependsCartridge clogging accelerates with heavy leaf fall; pre-skimming recommended during peak shedding season. GoodFilter canister capacity handles moderate leaf load; heavy leaf pools may require mid-cycle filter rinse to maintain suction.
Algae / heavy foulingthey differ DependsCleaner removes settled algae; active algae blooms require chemical treatment. Cartridge washings increase with algae frequency. GoodScrubbing brush contact on plaster and gunite surfaces addresses algae buildup; 70-micron filtration captures loosened algae particles.
Coverage you want
Floor only GoodPrimary documented function with predictable floor coverage per cycle. GoodThe 9650iQ Sport covers floor, walls, and waterline by design; floor-only need means paying for wall-climb capability you are not using.
Floor + walls GoodWall-climbing capability documented; sustained waterline reach varies by pool condition and cleaner pitch. GoodFour-wheel drive climbs pool walls reliably on plaster and gunite; owner reports confirm wall coverage on pools with standard 90-degree wall angles.
Floor + walls + waterlinethey differ DependsWaterline brush reach documented but performance on calcium buildup and algae line varies; depends on pool chemistry. GoodWaterline scrubbing is a documented manufacturer specification; the 9650iQ Sport is one of the few models in its class to reach the tile band.

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 recordPolaris 9650iQ SportSpecifications, 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.