Dolphin Liberty 400 vs Dolphin Liberty 600
On the published numbers, the Dolphin Liberty 600’s battery covers a pool of about 55 ft against about 49 ft for the Dolphin Liberty 400. Neither maker's rating goes beyond the arithmetic by more than the margin allowed. Every other published specification is in the table, with the rows where they differ tinted.

Dolphin
Dolphin Liberty 400
~$1,429
- Pool fit
- ~49 ft150 min on floor and walls at 13 sq ft/min
- Filtration
- No micron figure published
- Retrieval
- You fish out 17.9 lb
A cordless Dolphin that scrubs the waterline and talks to the MyDolphin Plus app.
Best for: Small pools where a three-year warranty matters more than range

Dolphin
Dolphin Liberty 600
~$1,729
- Pool fit
- ~55 ft180 min on floor and walls at 13 sq ft/min
- Filtration
- No micron figure published
- Retrieval
- You fish out 25.8 lb
Maytronics' big cordless robot runs a three-hour cycle over floor, walls and waterline and is rated for pools up to 50 feet.
Best for: A full-size in-ground pool whose owner wants a cordless Dolphin with a long warranty
| Specification | Dolphin Liberty 400 | Dolphin Liberty 600 |
|---|---|---|
| Approx. price | ~$1,429 | ~$1,729 |
| Type | Cordless floor+wall+waterline | Cordless floor+wall+waterline |
| Power | Cordless | Cordless |
| Cleans | Floor, walls, waterline | Floor, walls, waterline |
| Pool fit | ~49 ft | ~55 ft |
| Maker's pool claim | 33 ft | 50 ft |
| Runtime, floor + walls | 150 min | 180 min |
| Filter | Combined filter kit, plus an ultra-fine kit in the box | Multi-layer filter, plus an ultra-fine kit in the box |
| Weight | 17.9 lb | 25.8 lb |
| Retrieval | You fish out 17.9 lb | You fish out 25.8 lb |
| App control | Yes | Yes |
| Pool types | in-ground, above-ground | in-ground, above-ground |
| Surfaces | vinyl, concrete, fiberglass | not published |
| Warranty | 3 years | 3 years |
| Cost per swim season | $476 floor | $576 floor |
Dolphin Liberty 400: what it gives up
- Rated to only 33 ft at $1,429
- No battery capacity or charge time published
- No auto-surfacing listed, so retrieval is by hook
Dolphin Liberty 600: what it gives up
- 25.8 lb with no auto-surfacing listed
- $1,729, the most expensive cordless Dolphin here
- No battery or charge-time figures published
- Beatbot and Aiper robots at half the price publish runtimes of four hours or more
- It uses the Maytronics One app where the Liberty 400 uses MyDolphin Plus, so owners of both run two apps
Full specifications: Dolphin Liberty 400 · Dolphin Liberty 600