Dolphin T55i review

Keep the exact T55i number attached to the assessment

Maytronics identifies this U.S. configuration as Dolphin T55i, Product No. 99996245-WINI, UPC 724131499594. Its exact-number support record returns the same T55i description and United States property entry. It is not a second name for the separately numbered T45 99996241-WINI or T35 99996240-WIN. This review evaluates only the listed T55i version; it does not report hands-on use or a pool test.

Coverage and a real cycle-selection difference

The U.S. product page lists floor, walls and waterline cleaning for pools up to 50 feet. It gives a two-hour default and three selectable durations: 1.5, 2 and 2.5 hours. That schedule choice is the clearest documented distinction from nearby models whose U.S. listings show only a default cycle. The page also lists a weekly timer and a delay feature. Those are useful facts for planning a cleaning routine, but the listing does not explain coverage sequencing or prove how the robot will handle a particular pool’s corners, slopes, transitions or steps.

Maytronics classifies the T55i for both in-ground and above-ground pools and lists rectangular, round, free-shape and kidney shapes. These labels are not a fit guarantee for every pool: the retrieved exact U.S. source does not settle surface finish, step depth, ledge geometry or operating water depth. Verify the exact model’s operating instructions for those details rather than treating a general shape label as a compatibility test.

Do not treat the pool rating as cord reach

This is a corded configuration: the manufacturer metadata says it is not cordless, and its product-page image visibly shows the blue cable attached to the T55i-marked body. The exact U.S. page’s 50-foot figure is a maximum pool-length rating, not the cable’s length or the distance from an approved power supply to the far side of a pool.

The exact-number support property record reports WIRELEN=18.00 without a unit. I have preserved that raw manufacturer field but do not convert it to feet, infer a measurement convention or call it verified reach. The product-page-linked manual selector produced a no-products response when queried for the exact U.S. number; a T55i support landing and an App Manual are visible through Maytronics’ support route, but the exact operating PDF and safety/setup instructions were not resolved here. Before purchase, check the current model-matched instructions and plan the real cable path and power-supply placement from those instructions.

App availability is documented; app behavior is not fully specified

The exact listing names MyDolphin Plus and Wi-Fi, and the support-property record identifies an IoT 120W supply. A shared Maytronics app setup guide describes pairing through Bluetooth and connecting the power supply over 2.4 GHz Wi-Fi. That is setup context, not proof of every action offered by the T55i’s app, live underwater steering or a reliable connection at every pool-side location. The product page separately marks Remote Control: No and Automation Mode: Yes without explaining the latter’s meaning. I would treat the named app, weekly timer and selectable cycles as separate documented items rather than translating an ambiguous automation label into extra remote features.

Read the filter field literally

The product page calls the primary filter an extra-large Multi-Layer basket and lists top access. It does not name an included Ultra-Fine Filter Kit for this exact package; the U.S. model comparison displays a dash in the “Additional Filter in the Box” row. The separate filter parts shown under Add-On Accessories do not establish either carton contents or compatibility. Because the requested included-kit field is not confirmed, this assessment leaves it unknown rather than counting the T55i as a positive match for an essential Ultra-Fine-kit requirement. Confirm the seller’s exact package if that distinction matters.

The page lists a caddy as included, an anti-tangling swivel, two standard brushes and no full-filter indicator. A swivel may help manage twisting; it is not evidence that a cable cannot snag or that a route is suitable. The caddy listing does not mean that separately shown caddy covers are included. Check the actual package and the current maintenance directions, especially before relying on easy filter access as a substitute for a care schedule.

What the comparison can and cannot tell you

Compared with the exact U.S. T45, the T55i page provides selectable 1.5-, 2- and 2.5-hour cycles and a listed delay feature. Its main filter label is Multi-Layer, and it does not document the T45’s additional in-box Ultra-Fine kit; the T45 page instead names a Fine Filter Kit and an extra Ultra-Fine kit. The T55i row lists an included caddy, as does the T45. These are manufacturer-published configuration differences, not evidence that one cleans better. Compare the separate T45 assessment and verify each full product number rather than transferring a feature across the family.

For the T55i, the manufacturer lists a two-year warranty, robot weight of about 18.6 pounds, dimensions, two brushes and a 4,000 GPH suction-rate figure. The latter is a published claim, not an independent measurement or a cleaning result. The exact operating depth, step threshold, pool-surface compatibility, cable reach, safe power-supply position and full care instructions remain unverified here. Review the current model-matched manual, compare Product No. 99996245-WINI and UPC 724131499594 against the seller offer, and check package, warranty, condition and return terms. This is a source-based assessment—not a claim about present price, stock, customer experience or performance from testing.

See the exact Maytronics U.S. T55i listing and its linked product-support route for the current details and documentation.