Our take
Dolphin S300i
One identified owner liked the S300i’s cleaning before a failure; the account does not establish typical lifespan.
Useful cleaning in that owner’s pool.
Ownership duration and repair costs were not established in the checked account.
Pools that need mydolphin plus app control.
Buyers who need a robot that is available to buy immediately.
- MyDolphin Plus app control
- PowerStream floor, wall and waterline coverage
What owners and reviewers say
An identified S300i owner described very satisfactory cleaning before their unit eventually failed. That supports usefulness in daily life, but the checked account does not establish a typical service life or a model-wide reliability verdict.
Positive experience in a real pool
The owner used an S300i in an 18,000-gallon in-ground pool and said it worked well enough that they were considering another premium Dolphin. The account gives no controlled debris results or detailed wall-and-step assessment, so its praise should stay at that level.
[1]Failure without a usable lifespan estimate
The same owner was shopping because the S300i had stopped working. They did not give an ownership duration or confirmed fault. It would be misleading to present this either as evidence of rapid failure or proof of long service.
[1]Keep nearby models separate
The S300, S300i and newer app-equipped Dolphins appear together in buying discussions. Their accessories and connectivity differ. Evidence attached to another version should not be used to promise an S300i-specific app feature or repair outcome.
[1]Sources (1)
- S300i owner considering a replacement ↗Owner report
Full specifications
- Cycle time
- 1.5, 2, 2.5
- Maximum pool length
- 12 m
- Cleaning coverage
- Floor, Walls and Waterline
- Filter type
- Multi-Layer
- Weight
- 8.39 kg (robot), 18.8 kg gross
- Warranty
- 3 years
- App
- MyDolphin™ Plus
- Brushes
- 2 brushes, standard type with Active Brush
- Cable length
- 17.0 m
- Anti-tangling swivel
- Yes
Reviews
Customer feedback
4.5/5 · 45 customer ratings at Dolphin ↗These are customer ratings collected by the store, separate from the editorial reviews above.
Sources
Videos
- Pacific Pool & Spa Gold Coast: Dolphin s300i Robotic Pool Cleaner detailed overview ↗
- Midknight Mechanics: Maytronics Dolphin S300i Robotic Pool Cleaner Unboxing, Use and Review ↗
- Search YouTube for Dolphin S300i ↗Search results may include similar models; check the model name.
