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Cordless vs corded pool cleaner: reach, then runtime

Updated: 21 October 2026

The socket is on the house wall, the pool is at the end of the garden, and the listing still says pools up to 50 ft. That length is not the cable from the plug, across the patio and down to the floor. Cordless vs corded pool cleaner, in this amazon.co.uk set, is that fork for an in-ground pool. One corded robot remains: the Dolphin Nautilus CC Plus. This is not a lab test. If you buy through our links, we may earn a commission at no extra cost to you. The rows are on the [robotic pool cleaner comparison](/hub/pool-care/robotic-pool-cleaner).

The socket is on the house wall, the pool is at the end of the garden, and the listing still says pools up to 50 ft. That length is not the cable from the plug, across the patio and down to the floor.

Our top picks

Dolphin Dolphin Nautilus CC Plus

Best overall

Dolphin Dolphin Nautilus CC Plus
8.0/10about £1,699
View offer
WYBOT WYBOT C1

Alternative

WYBOT WYBOT C1
7.1/10about £649
View offer
EVERCROSS EVERCROSS BOT U8-2026

Rank 3

EVERCROSS EVERCROSS BOT U8-2026
8.2/10about £399.99
View offer
On this page
  1. 1.What the cable is for
  2. 2.What the battery is for
  3. 3.The supply, not a longer reel
  4. 4.Who should skip which side

What the cable is for

A cable buys a cycle that is not a battery. The Dolphin Nautilus CC Plus, ASIN B00Q8M0NWE, is about £1,699, AC, for in-ground pools up to 50 ft, with about two hours on the mains. The battery-description field still says lithium-ion. That is not a cordless runtime. The line is 4.2 from 13,341 reviews. Dry weight is 9.45 kg. A micron rating is not stated. A UK review says part of the cable reaches the supply, the depth uses more, and the far end of a 50 ft pool is then short. The file does not print a cable length in feet. If the socket is a long walk from the coping, this Dolphin is the skip. The same notes forbid an extension. Shape and filter come first on the robotic pool cleaner buying guide.

What the battery is for

A battery buys a deck with no lead, and a cycle that stops when the pack stops. Cordless wall claims here run from about 120 to 180 minutes, then a charge that is sometimes not stated. The top pick, the EVERCROSS BOT U8-2026 at about £399.99, claims 120 minutes and a 4.5 hour charge, with walls, a 6 litre basket and a hook. It is not for round or oval pools, and it weighs 12 kg. UK notes include a float off a slope and only three walls finished. You do not get a cycle that stays on the mains. The WYBOT C1 title at about £649 claims 150 minutes and a 3 hour charge, 3.9 from 679. The Aiper raw file, B0FCFDMQH6, at about £999 claims 180 minutes, a 3 μm filter and a 180 micron filter. Charge time is not stated, and the details table prints ASIN B0DP6JFJPV.
Dolphin Dolphin Nautilus CC Plus

Testsieger

Dolphin Dolphin Nautilus CC Plus
8.0/10about £1,699
View offer

The supply, not a longer reel

Neither robot wants an extension if the manual bans one. Maytronics’ EU safety sheet puts the corded supply at least 3 metres from the edge and 11 cm above the ground, on a 30 mA RCD, original cord only, with people out of the water. The IET’s Section 702 note expects a 30 mA RCD on zone 2 socket circuits. This page is not a wiring design. If the only socket is too close, or there is no RCD, call an electrician. A cordless charger stays back from the edge, with the robot out of the pool. The empty-pool routine is how to use a robotic pool cleaner. Flat seasonal pools belong on the robotic pool cleaner for an above-ground pool.

Who should skip which side

The Wybot power field says ac next to a cordless title and a 99 Wh battery line. Read both on the live amazon.co.uk page before you assume there is no mains lead. Skip the Dolphin if the cable cannot reach without an extension, or if you need a UK warranty path the reviews say was refused. Skip cordless wall robots if you need longer than the stated minutes without a recharge, or a round pool the EVERCROSS listings exclude.

Common questions

What do I give up with a battery?
You give up that uninterrupted mains run. The U8-2026 claims 120 minutes and then 4.5 hours of charging. The Wybot title claims 150 minutes and a 3 hour charge. The Aiper file claims 180 minutes and does not state a charge time. You gain a deck without a lead across the paving, and you still have to lift the robot out with a hook or a handle once the pack is done.
Will the Dolphin cable cover a 50 ft pool from my socket?
The title says in-ground pools up to 50 ft. A UK review says part of the cable is spent reaching the supply, the depth uses more, and the far end is then short. The file does not print a cable length in feet, so this page will not invent one. If the socket is already far from the coping, treat 50 ft as the pool claim, not as the reach from the plug.
Can I add an extension lead?
No, not against the manual. Maytronics says original cord only and no extension, with the supply at least 3 metres from the edge on a 30 mA RCD. A UK Nautilus review quotes that ban. A new socket, if you need one near the pool zones, is an electrician’s job under the wiring rules, not a Saturday adaptation.
How long do the cordless units claim, and how long do they take to charge?
The U8-2026 claims 120 minutes and a 4.5 hour charge. The U8-UK3 claims 120 minutes, and charge time is not stated. The Wybot title claims 150 minutes and 3 hours to charge, from a 99 Wh pack. The Aiper file claims 180 minutes, and charge time is not stated. Those are listing claims, not a stopwatch test in your pool. A floor-only POOLPURE claim of 100 minutes is a different class of robot.
Is the Wybot definitely cordless?
The title says cordless, and the battery field is 99 Wh lithium-ion at 25.2 V with a 3 hour charge. The power-source field on the same page says ac. Both lines are in the file. Confirm the live listing before you assume there is no mains lead. The 3.9 from 679 reviews does not settle that field.

Related pages

Best robotic pool cleaner

Robotic pool cleaner

Robotic pool cleaner above ground pool: round floors

Robotic pool cleaner buying guide: shape, then walls

How to use a robotic pool cleaner: people out first

Sources

Public UK sources from the research digest, plus the Maytronics manual and Liberty charger sheet named there. Shelf prices and star lines are the amazon.co.uk figures for these eleven listings on 19 October 2026.

  1. HSE: Swimming pool safety (retrieved 19 October 2026)
  2. PWTAG: Code of Practice (retrieved 19 October 2026)
  3. PWTAG: Glass in the pool (TN70) (retrieved 19 October 2026)
  4. IET Wiring Matters: Section 702 (retrieved 19 October 2026)
  5. GOV.UK: Electrical Equipment (Safety) Regulations 2016 (retrieved 19 October 2026)
  6. Maytronics: Dolphin operating manual (retrieved 19 October 2026)
  7. Maytronics: Liberty charger safety sheet (retrieved 19 October 2026)
  8. Consumer Rights Act 2015, chapter 2 (retrieved 19 October 2026)