Choosing a pool cleaner used to be straightforward, but the rise of battery technology has muddied the waters. Online sources consistently highlight that while cordless tech is trendy, corded robots remain the gold standard in several key areas.
As a repairer who sees these machines on the workbench every day, here is the honest dinkum breakdown of what you need to know before you dive in.
Corded Robotic Cleaners: The Traditional Powerhouses
Corded robots have been around for over 40 years and remain the industry standard for commercial and high-performance residential pools across Australia.
The Pros
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Unlimited Power Supply: No battery means consistent suction and scrubbing power from start to finish.
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Superior Cleaning Performance: Stronger motors make a massive difference in larger pools or those prone to heavy leaf litter.
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Proven Reliability: These are the “old faithfuls” of the industry.
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Vertical Mastery: Many cordless units still struggle with walls; corded models excel at scrubbing right up to the waterline.
The Cons
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The Tangle Factor: Even with modern swivel technology, cables can still get twisted occasionally.
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Setup Requirements: You’ll need a power point and a spot for the power supply box, which means a bit more gear on the pool deck.
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Navigation Obstacles: Pools with islands, swim-outs, or awkward ledges can sometimes snag the cable.
Cordless Robotic Cleaners: The New Wave of Convenience
Cordless robots have exploded in popularity lately. However, the consensus among experts is clear: they aren’t quite perfect yet.
The Pros
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Total Freedom: No cord, no tangles, no dramas—this is the biggest selling point by far.
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Quick Deployment: Simply drop it in and let it go for a swim.
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Ideal for Simple Spaces: Perfect for plunge pools or standard above-ground setups.
The Cons
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Battery Limitations: Suction often drops off as the battery drains, and run times are strictly limited.
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Weaker Motors: They generally can’t match the raw “grunt” of corded units when lifting heavy debris.
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Durability Issues: In the workshop, we see a high volume of repairs related to battery degradation and charging port corrosion.
A Repairer’s Honest Opinion
From the workshop floor, the truth is simple: Cordless robots are improving fast, but they aren’t replacing corded cleaners just yet. Most cordless failures we encounter involve:
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Battery degradation (losing charge over time)
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Charging port corrosion from salt and chemicals
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Water ingress around seals
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Weak motors struggling with heavy Australian debris loads
The Verdict: Corded units tend to fail less often and are generally easier—and cheaper—to repair when something does go wrong.
The Standout: Dolphin Liberty 600
If you are dead-set on going cordless, don’t waste your money on a “no-name” brand from a big-box discounter. The Dolphin Liberty 600 is one of the few models that consistently performs. It stands out because of:
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Magnetic-connect charging (massively reduces corrosion risk).
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Stronger scrubbing than almost all other cordless competitors.
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Premium Engineering: Designed by the same team behind the industry-leading corded Dolphin range.
Which One Is Right For Your Backyard?
| Choose Corded if… | Choose Cordless if… |
| You want maximum cleaning power. | You want convenience above all else. |
| You have a large pool or lots of gum leaves. | You have a small, simple pool or plunge pool. |
| You want the most reliable long-term option. | You are choosing a premium model (like the Liberty 600). |
| You don’t mind dealing with a cable. | You’re okay with shorter cleaning cycles. |
Where to Buy in Melbourne: FixMyDolphin
If you’re in Melbourne and want honest advice from a repairer—not a salesperson—FixMyDolphin is the place to go.
When you repair these machines every day, you learn which models go the distance and which ones are just expensive garden ornaments. We offer straightforward, repair-based recommendations. If the Liberty 600 is right for your pool, we’ll tell you. If a corded model is a better shout for your backyard, we’ll tell you that too.
