Key specs
- Pool size
- Up to 10 m / 33 ft
- Cleans
- Floor, walls and waterline
- Cycle
- 2.5 h default
- Charging
- Inductive magnetic connection (no exposed pins)
- Weight
- 8.1 kg
- Warranty
- 3 years
- Power
- Cordless, inductive charging
Our verdict
The Liberty 400 is a well-built cordless Dolphin with a warranty to match. Larger pools should look at the Liberty 600 or EON range instead.
What we like
- Inductive charging avoids corroded metal contacts
- Ultra-fine filter included in the box
- 3-year warranty is the best among cordless picks
- MyDolphin Plus app
- Inductive charging with no exposed contacts
- Ultra-fine filter included
What to know
- Pricey for a 33 ft rating
- Shown as a store exclusive and sometimes out of stock on Dolphin's US site
- Expensive for its pool size rating
How it compares
| Spec | Dolphin Liberty 400 | Polaris FREEDOM Plus | Polaris VRX iQ+ | Beatbot Sora 70 |
|---|---|---|---|---|
| Price | around $1,429 list | around $1,399 (US retailers, Oct 2026) | around $1,499 (US retailers, Oct 2026) | around $1,199 (Beatbot store, Oct 2026) |
| Pool size | Up to 10 m / 33 ft | - | - | - |
| Cleans | Floor, walls and waterline | Floor, walls and waterline modes | SMART, Quick Clean, Deep Clean, waterline-only, custom | - |
| Cycle | 2.5 h default | - | - | - |
| Charging | Inductive magnetic connection (no exposed pins) | - | - | - |
| Weight | 8.1 kg | - | - | - |
| Warranty | 3 years | - | - | 3 years |
| Power | Cordless, inductive charging | Cordless, lithium-ion | Corded, 70 ft cable with swivel | Cordless, 10,000 mAh |
| Cleaning time | - | Cleans the pool in 2.5 h or less (manufacturer) | - | - |
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