Corded vs. cordless
Dolphin’s Nautilus CC Plus impressed us with its cleaning power and the anti-tangle cord worked as advertised.
David Watsky/CNET
There are advantages to having a corded robot vacuum, most notably not having to worry about recharging the device or about the lithium battery losing steam over time. Corded pool robots are recommended for most pool owners because they’re less prone to problems or to motor malfunctions. Corded robots also don’t need to be pulled from the pool and recharged after each use, unlike all the cordless models on our list, with the exception of the Wybot S2 with solar charging dock.
That said, cordless robots are ideal if your pool isn’t near an electrical power source. Running a long extension cord through the yard, in places prone to moisture, isn’t advisable long term.
Cordless vacuums performed just as well as corded ones. We’ve been testing some of
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