Dolphin

Dolphin Liberty 400 Cordless Robotic Pool Cleaner

  • Flagship Liberty: adds cordless tile waterline scrubbing (up to 33 ft)
  • myDolphin™ Plus Bluetooth app customizes Eco Mode & cleaning cycles
  • Click-Up™ acoustic rattle sensor climbs the wall for easy hand pickup
  • Magnetic inductive charging + top-load fine & ultra-fine filtration
  • Lightweight 17.9-lb tracked design & 3-year Maytronics warranty
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Also worth a look

Other Cleaners We’d Consider

Three strong alternatives at a similar price, chosen for pools like yours.

Cordless Tile-Line Scrubbing, App Control & Click-Up™ Retrieval

Cordless Waterline Scrubbing

Upgrades over the Liberty 200/300 to scrub floors, vertical walls, and the tile waterline completely cord-free.

myDolphin™ Plus App

Customize cleaning modes, Eco Mode schedules (48/72/96-hr intervals), and cycle settings via Bluetooth before submerging.

Click-Up™ Shake Retrieval

Shake the acoustic wand in the water and the Liberty 400 climbs straight to the coping edge.

Customizable Eco Mode

Keeps your pool floor clean all week with short scheduled runs on a single battery charge.

Fine + Ultra-Fine Top Basket

Includes both mesh and pleated ultra-fine panels beneath a clear top inspection window.

3-Year Maytronics Warranty

Backed by Maytronics' top 3-year residential warranty tier.

Inside the Flagship Cordless Dolphin Liberty 400

Best For

Pools up to 33 ft wanting full cordless waterline scrubbing, app-customizable Eco Mode, Click-Up™ sound retrieval, and a 3-year Maytronics warranty.

Why We Like It

The top model in the 33-ft cordless Liberty trio—adding waterline scrubbing, app setup, and 3-year coverage. For larger 50-ft pools, compare corded ProLine™ or Clear models.

Every Cordless Feature Maytronics Packs Into 17.9 Lbs

The Dolphin Liberty 400 crowns the compact cordless Liberty lineup by adding tile waterline scrubbing, myDolphin™ Plus Bluetooth app configuration, and a 3-year Maytronics warranty on top of Click-Up™ acoustic shake retrieval, multi-day Eco Mode, and corrosion-proof magnetic inductive charging.

Have a Larger Pool Over 33 Feet?

All three Liberty 200/300/400 models run 1.5-hour battery cycles sized for pools up to 33 feet. For full-size 40–50 ft inground pools needing deeper suction and uninterrupted 2.5–3 hour coverage, compare our corded Dolphin Quantum, Dolphin Premier, or Clear UV—or check the in-stock Liberty 200 for 33-ft cordless value.

Dolphin Liberty 400 Specs

Recommended Pool Size Inground & above-ground pools up to 33 ft (10 m)
Cleaning Coverage Floor, walls & tile waterline
Power & Charging Cordless lithium-ion · Magnetic inductive charger (~6 hrs)
App & Modes myDolphin™ Plus App (Bluetooth pre-submerge setup), Cycle Selector & Eco Mode
Retrieval Click-Up™ acoustic sensor wand + Wall Parking + Pole Hook
Filtration & Weight Top-load fine + ultra-fine panels · 17.9 lbs dry
Manufacturer Warranty 3-Year Maytronics Warranty

Dolphin Liberty 400 FAQ

Does the myDolphin Plus app control the Liberty 400 while underwater?

Bluetooth radio signals don't pass through deep water, so you use the app poolside before submerging to configure your cleaning mode or Eco Mode schedule—then use the acoustic Click-Up™ wand to summon it back up anytime.

How does Liberty 400 compare to Liberty 200?

The Liberty 400 adds waterline scrubbing, app setup, Eco Mode, Click-Up™ shake retrieval, ultra-fine filters, and a 3-year warranty over the Liberty 200.

What if the Liberty 400 is out of stock?

Check our in-stock Dolphin Liberty 200 for 33-ft cordless cleaning, or chat with a Pool Robot Expert to compare cordless and corded 3-year-warranty flagships.

We’re Here Long After Delivery Day

3-Year Maytronics Warranty

Manufacturer-backed protection and help from authorized US service centers.

30-Day Returns

If it isn’t right for your pool, start a return within 30 days.

Fast, Free Shipping

Your cleaner ships fast and free on qualifying orders, ready for its first run.

ICO - The Smart Pool Water Monitor

Let the robot clean the pool. Let ICO watch the water.

ICO tests your water every hour and tells you exactly what to add—before cloudy water or algae ruins the weekend.

  • Measures pH, ORP, and water temperature every hour
  • Exact chemical amounts in the free iOS & Android app
  • Warns you before heat or rain knocks the water out of balance
  • Versions for chlorine/bromine and salt water pools (salt also tracks TDS)
From $449 $699 Save $250
Learn more about ICO →

Complete Your Setup

Make poolside transport effortless and shield your cleaner and power supply between cycles.

Side-by-Side Comparison

How the Dolphin Liberty 400 Stacks Up

See what spending more—or less—changes in pool size, filtration, warranty, and everyday convenience.

Model You're viewing Dolphin Liberty 400 Robotic Pool Cleaner Dolphin Liberty 400
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View details
Similar-price option Dolphin Escape Robotic Pool Cleaner Escape
$899 $768
Compare model Dolphin Cayman Robotic Pool Cleaner Cayman
$1299 $1079
Compare model Dolphin Quantum Robotic Pool Cleaner Quantum
$1649
Compare model Clear S Robotic Pool Cleaner Clear S
$2749 $1749
Best for — Above-ground & small pools Best value wall-climber Best all-around inground pick Premium clean without the UV price
Cleaning coverage — Floor only Floor, walls & waterline Floor, walls & waterline Floor, walls & waterline
Filtration — Extra-large top-load basket MaxBin™ top-load basket (NanoFilter™-ready) XXL MaxBin™ top-load + NanoFilters™ UltraFilter™ (1μm / 180μm)
Warranty — 2 years 2 years 2 years 3 years
Climbs walls — —
Scrubs waterline — —
Ultra-fine filtration — — —
Wi-Fi + app control — — —
UV water clarifier — — — — —

Specs are based on manufacturer data; prices can change. Build your own comparison →

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