In the era of cordless technology, Maytronics Dolphin leads the robotic pool cleaning revolution with their innovative Dolphin Liberty series. The Dolphin Liberty 400 vs Dolphin Liberty 300 are two standout models that offer wireless convenience, energy-efficient performance, and smart cleaning for residential pool owners who want freedom from tangled cables and bulky power supplies. Designed specifically for small to medium-sized in-ground and above-ground pools, these cordless cleaners redefine portability, autonomy, and ease of use.
While both models share core engineering foundations—including magnetic induction charging and eco mode—they diverge significantly in terms of smart features, brush configuration, connectivity, and overall cleaning intelligence. This in-depth comparison breaks down every aspect of the Dolphin Liberty 400 vs Dolphin Liberty 300 to help you determine which robotic cleaner truly meets your needs for a cleaner, smarter, and more cordless pool care experience.
Contents
Differences Between Dolphin Liberty 400 vs Dolphin Liberty 300
Cordless Convenience and Battery Performance
Both the Liberty 400 and Liberty 300 are fully cordless, powered by a rechargeable lithium-ion battery that delivers up to 90 minutes of runtime per full charge. This runtime is optimized for pools up to 10 meters (33 feet), making them ideal for most backyard pools without the complications of an external power source or floating cable.
The Magnetic Induction Charging technology enables both units to recharge seamlessly via a contactless charging dock that’s placed poolside. The ClickUp™ lift system, standard on both models, allows users to summon the robot to the pool edge by raising a floating handle at the end of its cycle for easy removal.
Winner: Tie
Both models deliver the same cordless runtime, intuitive charging, and lift functionality, offering wireless cleaning freedom without compromise.
Cleaning Coverage and Surface Reach
Where these two models begin to diverge is in cleaning coverage. The Dolphin Liberty 400 is capable of cleaning the floor, walls, and the waterline, offering full three-surface coverage. Its enhanced vertical navigation allows it to climb and hold position along the tile line, removing grime, sunscreen oil, and scum that tends to accumulate at the water’s edge.
In comparison, the Dolphin Liberty 300 is limited to floor and wall cleaning only, without the capability to scrub the waterline. While it performs well on horizontal and vertical surfaces, users must manually clean the waterline or invest in additional equipment.
Winner: Dolphin Liberty 400
Its waterline cleaning ability ensures comprehensive surface coverage for a truly spotless pool.
Both models are equipped with CleverClean™ scanning technology, which allows them to plan optimized routes across the pool floor and walls. However, the Liberty 400 steps ahead with an integrated gyroscopic sensor, which enhances directional awareness and improves climbing efficiency and turning control. This results in more precise wall cleaning, better coverage of irregular pool shapes, and fewer missed spots.
The Liberty 300 relies solely on CleverClean™ without gyroscopic correction, which is adequate for basic pool layouts but may show less path accuracy in pools with varying contours or slopes.
Winner: Dolphin Liberty 400
With gyroscopic guidance, it delivers more intelligent and adaptive cleaning navigation.
Brush System and Scrubbing Performance
Scrubbing power directly influences a robotic cleaner’s ability to remove biofilm, algae, and dirt from various surfaces. The Dolphin Liberty 400 features a dual active scrubbing brush system, with brushes that rotate faster than the robot’s movement to provide enhanced friction on pool surfaces. This dual-brush setup ensures consistent debris removal even during reversing motions.
The Liberty 300 includes only a single active brush, which provides solid cleaning on flat surfaces but lacks the same depth and consistency on walls and textured liners.
Winner: Dolphin Liberty 400
Its dual-brush design delivers more thorough and efficient cleaning performance on all pool surfaces.
Filtration System and Debris Handling
Both the Liberty 300 and Liberty 400 use a fine cartridge filter that traps small and medium debris, such as leaves, dust, and sand. The top-load filter design makes removal and rinsing easy. While neither model includes ultra-fine or interchangeable filters, their standard filtration is adequate for most backyard pool environments.
That said, due to the Liberty 400’s better surface coverage, especially at the waterline, it tends to collect more oily residues and finer particulates, making its filtration system work harder and more effectively.
Winner: Dolphin Liberty 400
Though both filters are similar, the 400’s extended reach results in more thorough debris collection across all zones.
Smart Features and App Control
One of the biggest differences between the two models is smart connectivity. The Dolphin Liberty 400 is Bluetooth-enabled and connects to the MyDolphin™ Plus App, giving users access to cleaning cycle selection, remote start/stop, and a weekly scheduling feature. This allows owners to set and forget, letting the robot run on a personalized routine.
In contrast, the Liberty 300 lacks any form of app integration or remote control. All commands must be made directly from the unit or charger, and cleaning modes are limited to Standard and Eco without the ability to customize schedules or operations.
Winner: Dolphin Liberty 400
With app connectivity and automated scheduling, it brings a modern, intelligent cleaning experience.
Cleaning Modes and User Customization
The Liberty 400 includes multiple cleaning modes—Standard Mode for full cleaning, Eco Mode for light daily maintenance, and Cycle Selector, allowing users to choose between different cleaning lengths or surface focuses.
The Liberty 300 is limited to Standard and Eco Modes only, without customizable cycle selection or surface targeting, which reduces flexibility in tailoring the robot’s performance to specific needs.
Winner: Dolphin Liberty 400
More modes mean more control and better adaptability for different cleaning routines.
Portability and Weight Handling
At just over 18 lbs, both models are extremely portable and easy to handle, especially with the ClickUp™ retrieval system. Their compact design makes them ideal for users who want a lightweight robotic cleaner without sacrificing capability. Charging and storing either model requires minimal space.
Winner: Tie
Both models are nearly identical in weight and share the same ergonomic handling features.
Quick Rundown Of Dolphin Liberty 400
Quick Rundown Of Dolphin Liberty 300
Conclusion
Choose Dolphin Liberty 300 if you need a budget-friendly cordless cleaner for simple floor and wall cleaning in smaller pools. It’s perfect for users who value portability and simplicity over advanced smart features and don’t mind manually managing their pool cleaning routine.
Choose Dolphin Liberty 400 if you’re looking for a feature-rich, app-enabled cordless robotic cleaner that delivers full coverage, superior scrubbing, and smart scheduling via your phone. Its waterline cleaning, dual brush design, and gyro navigation make it the better choice for those who want a truly hands-free, efficient, and intelligent pool maintenance solution.
Overall Winner: Dolphin Liberty 400
With full-surface cleaning, app control, dual scrubbing power, and smart navigation, the Dolphin Liberty 400 offers a future-ready cordless experience that outshines the Liberty 300 in nearly every category.