Dolphin LIBERTY 300 review

This assessment covers the U.S. Dolphin LIBERTY 300, Product No. 99998130-US. Maytronics rates it for pools up to 33 feet and lists a 2.5-hour default cycle. Its meaningful distinction from the LIBERTY 200 is not a different length rating: the 300 adds documented ClickUp retrieval and a physical Cycle Selector, while its manual's box table lists extra ultra-fine panels. It does not add app control.

Waterline cleaning, with a separate floor-only option

The exact 300 page's formal technical coverage lists the floor, walls and waterline, and says Waterline Scrubbing Yes. The linked LIBERTY family manual confirms waterline scrubbing for the 300. The manual also describes a Cycle Selector that can choose a floor-only cycle; it returns to the default mode after that run. Keep those routines distinct when deciding whether the cleaner's standard waterline cycle or a narrower floor pass suits the pool.

The product page's promotional text mentions a “sunledge at an 11' depth,” but the captured source does not preserve a clear unit or boundary. The formal technical coverage does not list steps, and the manual does not give a depth-qualified 300 step plan. That line is too ambiguous to use as proof that the machine suits a particular ledge. I therefore do not treat the 300 as a match for the finder’s depth-qualified step requirement.

Filter contents are a concrete 300-versus-200 difference

The exact page lists a combination filter kit with top access and an additional ultra-fine filter kit in the box. More specifically, the linked manual's LIBERTY model table shows two fine and two ultra-fine panels for the 300, plus two additional ultra-fine panels. It tells owners to rinse the basket soon after removal so debris does not harden on the filter, and describes periodic cleaning around once a month. The extra panels may matter to someone who wants filtration choices documented in the package, but the source material does not turn that into a measured water-clarity result.

The same manual gives the LIBERTY 200 two fine and two ultra-fine panels without the 300's extra pair. Check the seller's carton against Product No. 99998130-US and the model-specific accessory list; do not assume a 200 listing, replacement basket, or unrelated bundle has the same contents.

Retrieval and scheduling are button-and-Clicker features

The manual identifies ClickUp for the 300 and 400. After a cycle ends, shaking the Clicker in the water calls the cleaner toward its nearest wall for pickup. It also explains an end-of-cycle pickup routine in which the robot climbs a wall and waits briefly; a hook remains an alternative to lifting it by hand. These features address removal rather than live steering, and the listed Clicker should be verified in the actual package.

The 300 does not have a mobile app on its exact specifications page. Its controls are different from the app-based LIBERTY 400. The manual also describes Eco Mode for the 300 as short floor-only sessions—up to 40 minutes, three times during a week on one charge. Using the Clicker during Eco cancels that schedule, so retrieval needs to be coordinated with the maintenance routine. The ordinary default cycle remains the separate 2.5-hour cycle on the 300 product page.

Charging, pool limits and daily care

Maytronics' shared LIBERTY manual lists a lithium-ion battery of 5,000 mAh, 25.2 V and 126 Wh for the family, and says it is not user-replaceable. Charging can take up to six hours. The charger must be kept out of the water, in the stated 43–95°F range, and at least 12 feet from the pool edge while in operation. The cleaner's water limits are 1–9.8 feet deep and 43–95°F; the manual also sets chlorine at no more than 4 ppm, pH at 7.0–7.8 and salt at no more than 5,000 ppm. It warns against use after liquid flocculant or another clarifier has been added.

The exact product page lists liner, gunite and fiberglass coatings and rectangular or round pools. That is a starting compatibility check rather than a guarantee for a specific finish, slope, debris mix or water condition. At 17.861 pounds, weight may also matter when choosing how to lift and store the cleaner.

Who should compare it—and what to verify

The LIBERTY 300 is worth shortlisting when cordless power, a 33-foot rating, waterline cleaning, extra ultra-fine media and sound-triggered pickup fit the owner's routine. It is less suitable when app scheduling or verified shallow-step cleaning is essential. Before ordering, confirm the exact SKU, filter panel count, Clicker, charger, warranty terms, pool finish and step/ledge limitations. This is a document-based assessment, not a hands-on test; it makes no claim about actual cleaning success or cycle performance in a particular pool.