Maytronics
Comparison · 2 robots
Maytronics Dolphin Liberty 300 · Maytronics Dolphin Oasis Z5i
All robot pool cleaners. Every measure below is plotted against the full class, so a difference can be read against how much the class itself varies.
- Maytronics Dolphin Liberty 300
- Maytronics Dolphin Oasis Z5i
Maytronics
Maytronics Dolphin Oasis Z5i
- Autonomy
- IIIConditional Autonomy
- Score
- Not scored
- Readiness
- Not assessed
- Price
- $1,449list
Up to three
01 Classification
What each one does on its own.
The Autonomy Ladder is the same five rungs for every robot on the site. A rung describes the conditions a robot handles without you, not how good it is.
V
Generalized
Any task, any setting
IV
Environmental
Handles new obstacles without help
III
Conditional
Finishes familiar jobs on its own
Maytronics Dolphin Liberty 300Maytronics Dolphin Oasis Z5i
II
Assisted
Runs preset routines, needs rescue
I
Manual
One action, on command
02 Assessment
Where they actually differ.
The Robovations Score is nine inputs across three pillars, each weighted as shown and each scored so that more is better. A robot can lead on one and trail on another, which is the point of showing them apart. Cost of ownership and data handling are reported on each robot's own page and are never averaged into the score.
Capability
Task completion16% of score
Does it finish the job it is sold to do, unattended
72
- Maytronics Dolphin Liberty 30072
18median 72 across 381 scored robots100
Not scored: Maytronics Dolphin Oasis Z5i
Coverage and navigation10% of score
Does it work the whole area, and hold that between runs
30
- Maytronics Dolphin Liberty 30030
15median 70 across 371 scored robots100
Not scored: Maytronics Dolphin Oasis Z5i
Edge-case recovery10% of score
Does it recover from the failures its category presents
45
- Maytronics Dolphin Liberty 30045
18median 50 across 287 scored robots100
Not scored: Maytronics Dolphin Oasis Z5i
Operating envelope4% of score
How far conditions can vary before performance drops
70
- Maytronics Dolphin Liberty 30070
25median 68 across 345 scored robots100
Not scored: Maytronics Dolphin Oasis Z5i
Dependability
Field failure rate16% of score
Documented hardware failures per owner-year
48
- Maytronics Dolphin Liberty 30048
6median 70 across 371 scored robots100
Not scored: Maytronics Dolphin Oasis Z5i
Software stability14% of score
Whether updates fix more than they break
34
- Maytronics Dolphin Liberty 30034
15median 65 across 300 scored robots100
Not scored: Maytronics Dolphin Oasis Z5i
Support longevity10% of score
Committed parts, service and updates, with dates
82
- Maytronics Dolphin Liberty 30082
0median 63 across 377 scored robots100
Not scored: Maytronics Dolphin Oasis Z5i
Ownership burden
Routine maintenance12% of score
Hands-on time it asks for in normal operation
72
- Maytronics Dolphin Liberty 30072
22median 65 across 382 scored robots100
Not scored: Maytronics Dolphin Oasis Z5i
Consumables8% of score
Parts that must be bought to keep it working
71
- Maytronics Dolphin Liberty 30071
8median 69 across 381 scored robots100
Not scored: Maytronics Dolphin Oasis Z5i
03 Measured against the class
How far apart is a long way?
A number only means something next to the spread it sits in. Each track below is the real range across every classified robot in the class, with the median marked.
Price63 with a published figure
$1,249$1,449
- Maytronics Dolphin Liberty 300$1,249
- Maytronics Dolphin Oasis Z5i$1,449
$299median $1,295$4,250
Weight62 with a published figure
17.9 lbs26.7 lbs
- Maytronics Dolphin Liberty 30017.9 lbs
- Maytronics Dolphin Oasis Z5i26.7 lbs
7.9 lbsmedian 21 lbs46.3 lbs
Not compared, because fewer than two of these robots carry a published figure: Suction, Runtime, Charge time, Noise, Height.
04 Ownership
What the numbers leave out.
The trade-off
What each design gives up to be good at what it is good at.
Maytronics Dolphin Liberty 300
Cordless convenience comes with battery discipline. The pack goes into winter storage charged and gets topped up during the off-season, and between cycles the unit is lifted out and charged by hand rather than returning to a dock.
Maytronics Dolphin Oasis Z5i
Dual tracks climb walls and deliver full waterline reach, but the system costs $1,500+ when a floor-only corded model runs $300-500.
Who each one is wrong for
Stated by the record itself. A robot being wrong for a household is a fact about fit, not a fault.
Maytronics Dolphin Liberty 300
- Pools with a heavy leaf load
- Coverage per charge is bounded by the battery, and published cycle length is itself in dispute (Maytronics lists 2.5 hours, Robotic Reviews reports 1.5). A heavy debris load also fills the basket sooner, and the basket cannot be emptied without lifting the unit out of the water.
- Pools where lifting the unit out at the edge is awkward
- The Liberty 300 has to come out of the water to charge, and the sound-activated retrieval only brings it to the wall. Deck height, coping and reach decide how much of a chore that is.
- Owners requiring hands-off scheduling year-round
- This SKU has no Wi-Fi, app or schedule, and no dock to return to. Every cycle is started at the unit and ended by lifting it out; charge maintenance and off-season storage stay with the owner.
Maytronics Dolphin Oasis Z5i
- Pools longer than 50 ft or beyond the cord's reach
- Maytronics rates the Z5i by pool shape and length, up to 50 ft, and the 60 ft cable has to reach an outlet serving the pool area. Surface material is not a constraint: Maytronics sells Dolphin cleaners across pool surfaces, vinyl included.
- Renters or short-term pool owners
- Purchase price and dealer setup make ownership economical only for 5+ year tenures. No major resale market for commercial-grade dealer units.
- Owners who want cordless operation
- The 60 ft cord ties the unit to a poolside outlet, and it is placed in the water and lifted back out by hand at each cycle. There is no cordless version of this model.
What stays your job
The upkeep ownership hands back to you, whatever the autonomy level says.
Maytronics Dolphin Liberty 300
- After every cycle: Lift the filter panels out of the top-access basket and rinse them with fresh water; check the brushes for wrapped debris.
- Monthly: Wipe the magnetic charging contacts on the unit and on the charger so they seat cleanly.
- Every 3-6 months: Check the drive tracks and brushes for wear. The drive and pump motors are sealed units; noise or vibration is a service-center matter, not an owner procedure.
- Seasonally: Store the unit charged and indoors, and top the battery up during the off-season. Storing a lithium pack discharged damages it.
- Annually: Inspect the filter panels for tears and the charger lead for damage.
Maytronics Dolphin Oasis Z5i
- After every cycle: Lift the filter out of the top-load housing, unsnap the bottom and rinse it with fresh water.
- Monthly: Check the brushes and tracks for wrapped debris; inspect the cable for kinks.
- Annually: Check the brushes and filter panels for wear and replace them when worn. Maytronics publishes no replacement interval or price for either.
- Seasonally: For freezing climates, remove the unit from the pool and store it and the cable indoors, out of direct sun.
- As needed: Swap between the fine and ultra-fine filter kits to match the debris the pool is carrying.
05 Evidence
How much each of these is standing on.
Classifications rest on different depths of evidence. A pre-release assessment and a verified one are not the same kind of claim.
| Robot | Evidence status | Sources reviewed | Last assessed |
|---|---|---|---|
| Maytronics Dolphin Liberty 300 | Pending | — | Aug 2026 |
| Maytronics Dolphin Oasis Z5i | Discontinued | 2 | Aug 2026 |
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