Can a cordless robot complete a 40-foot pool in one session?

None of these records tests a 40 ft pool directly. The Beatbot AquaSense Pro is rated for pools up to about 3,230 sq ft, with up to 5 hours of floor cleaning per charge, and independent testing found it thoroughly cleaned a 16 by 32 ft in-ground pool. The Aiper Scuba S1 Pro runs a 180 minute cycle and is rated for pools up to 2,150 sq ft and 66 ft long. The Aiper Surfer S1 skims the surface only.

Does the Dolphin Nautilus CC Supreme require electricity running at the pool?

Yes. The Dolphin Nautilus CC Supreme is corded, with a 60 ft cable, and its record calls for an outdoor GFCI outlet on a dedicated circuit, never an extension cord, with the power supply unplugged before the cleaner is handled. Corded power removes charge time and battery aging, but the cord is deployed and coiled by hand every cycle.

How does the Aiper Surfer S1 fit into a pool-maintenance routine?

The Aiper Surfer S1 is a surface skimmer. It collects floating debris such as leaves and insects and does not clean floors, walls, steps or the waterline. Its record describes it as a complement to a floor cleaner or circulation system, suited to pools where airborne debris is the main load. Because it recharges from the sun while in the water, the routine is emptying its 5 L basket every few days.

What does each pool robot cost to own over five years?

None of these records totals a five-year cost, so no ranking is possible here. List prices are $299.99 for the Aiper Surfer S1, which skims the surface only, $1,199.99 for the Aiper Scuba S1 Pro, $1,449 for the Dolphin Nautilus CC Supreme and $2,199 for the Beatbot AquaSense Pro. The AquaSense Pro's filters are rinsed and reused, the Scuba S1 Pro's MicroMesh element is replaced when it stops clearing, and the Dolphin's brushes every one to two seasons. No record prices those parts.

What happens if cordless battery capacity degrades over time?

None of these records measures battery fade over time. The Beatbot AquaSense Pro's pack is sealed in an IP68 housing and is not user-replaceable; Beatbot sells battery packs, services them through authorized centers, and lists a 24-month warranty that covers the battery. The Aiper Surfer S1's sealed housing is not owner-serviceable, and the Aiper Scuba S1 Pro's record states no battery terms. The corded Dolphin Nautilus CC Supreme has no battery to wear.

Comparisons · Robot Pool Cleaners3 robots · checked 16 Oct 2026

A situation

Cordless vs corded robot pool cleaners: which is better?

A corded robot needs an outlet and a cable. A cordless one needs charging and stops when the battery runs out. This page sets out how long each runs and what it covers.

This page checks

PowerCable, battery or solar
Run timePer charge or per cycle
RechargeTime back to full
Pool sizeThe rating each maker lists
What it cleansSurface, floor, walls, waterline

Maytronics

Dolphin Nautilus CC Supreme

IIAssistedStrong

$1,449list

Where to buy

Amazon

Mar 2024CC Supreme cartridge filter compatibility expanded to third-party suppliers

Aiper

Scuba S1 Pro

IIIConditionalLimited

$1,199.99list

Where to buy

Amazon

Jan 2024Aiper unveils Scuba S1 Pro at CES 2024 with quad-motor filtration and waterline cleaning

Aiper

Surfer S1

IIAssistedCapable

$299.99list

Where to buy

Amazon

Aug 2026FCC Covered List update places Aiper Surfer S1 under robot import ban

Full specifications17 figures on record · 14 differ

Figure

Dolphin Nautilus CC Supreme

Scuba S1 Pro

Surfer S1

List price

Dolphin Nautilus CC Supreme$1,449

Scuba S1 Pro$1,199.99

Surfer S1$299.99

Released

Dolphin Nautilus CC SupremeJan 2020

Scuba S1 ProMar 2024

Surfer S1Jan 2024

Power

Dolphin Nautilus CC SupremeCorded

Scuba S1 ProCordless battery

Surfer S1Solar-charged cordless battery

Cleans

Dolphin Nautilus CC SupremeFloor, walls and waterline

Scuba S1 ProFloor, walls and waterline

Surfer S1Water surface only; a skimmer, it does not clean floor, walls or waterline

Cycle

Dolphin Nautilus CC Supreme150 min

Scuba S1 Pro180 min

Surfer S1Not on record

Pool length

Dolphin Nautilus CC Supreme50 ft

Scuba S1 Pro66 ft

Surfer S1Not on record

Filter

Dolphin Nautilus CC SupremeNot on record

Scuba S1 Pro3 micron

Surfer S1200 micron

Filter basket

Dolphin Nautilus CC SupremeNot on record

Scuba S1 Pro5 L

Surfer S15 L

Weight

Dolphin Nautilus CC Supreme24.6 lb

Scuba S1 Pro26 lb

Surfer S112.8 lb

Runtime

Dolphin Nautilus CC SupremeNot on record

Scuba S1 Pro180 min

Surfer S11,200 min

Charge time

Dolphin Nautilus CC SupremeNot on record

Scuba S1 Pro240 min

Surfer S1240 min

Battery capacity

Dolphin Nautilus CC SupremeNot on record

Scuba S1 Pro197 Wh

Surfer S143 Wh

Battery type

Dolphin Nautilus CC SupremeNot on record

Scuba S1 ProLi-ion

Surfer S1Li-ion

Noise

Dolphin Nautilus CC Supreme72 dB

Scuba S1 ProNot on record

Surfer S152 dB

Navigation

Dolphin Nautilus CC SupremeMaytronics scanning coverage algorithm across floor, walls and waterline. No stored map, no zone selection, no obstacle avoidance.

Scuba S1 ProWavePath Navigation Technology 2.0 with four infrared sensors for wall, step and obstacle detection before contact; quad-motor gyro-stabilized drive; WiFi remote monitoring. No stored pool map.

Surfer S1Ultrasonic obstacle sensing with unmapped surface coverage; Anti-Stranding retractable support beams; Sunseeker light-seeking behavior that drives the unit toward sunlight at low battery.

Connectivity

Dolphin Nautilus CC SupremeWi-Fi

Scuba S1 ProWi-Fi, Bluetooth

Surfer S1Wi-Fi, Bluetooth

Size

Dolphin Nautilus CC Supreme16 × 16.7 × 10.3 in

Scuba S1 Pro18.1 × 13.4 × 7.5 in

Surfer S111.4 × 11.4 × 3.9 in

Add a robot57 robot pool cleaners on record + Add a robot57 robot pool cleaners on record

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Cord or no cord

How each one is powered and how long it runs

The Nautilus CC Supreme is the only corded robot, with a cycle of 1.5 or 2.5 hours. The Scuba S1 Pro lists up to 3 hours (180 minutes) per charge. The Surfer S1 lists up to 20 hours.

MaytronicsDolphin Nautilus CC SupremeAiperScuba S1 ProAiperSurfer S1

Run time

Per cycle or per full charge

Each value as a length on one scale from zero.

Dolphin Nautilus CC Supreme: 1.5 or 2.5hours per cycleCycle length is fixed by mode. It does not depend on a charge.Maytronics product page
Scuba S1 Pro: 3hoursPrinted as 180 minutes of battery life, up to. A hands-on review also measured about 3 hours.Aiper product page
Surfer S1: 20hoursUp to, on a full charge, per the maker. No hands-on test found.Aiper product page

Dolphin Nautilus CC Supreme Maytronics product pageScuba S1 Pro Aiper product pageSurfer S1 Aiper product page

Seen from above on a pool deck: the Dolphin Nautilus lies out of the water beside its long cable coiled to a power supply, the Aiper Scuba sits wet with a small charger plugged into it and its retrieval hook beside it, and the solar Surfer still floats in the pool at the edge of the deck.

Your home

How each one fits a home like yours

Set the conditions that describe your home. Each robot answers from its own Fit Check; nothing is scored until you choose.

Fit check

Describe your home

Pick what applies. Each robot answers from its own record.

Pool type

Pool size

Debris load

Across what you setEach robot’s own Fit Check

Dolphin Nautilus CC SupremeSet a condition

Scuba S1 ProSet a condition

Surfer S1Set a condition

Pool typeNot set

Dolphin Nautilus CC SupremeNot set

Scuba S1 ProNot set

Surfer S1Not set

Pool sizeNot set

Dolphin Nautilus CC SupremeNot set

Scuba S1 ProNot set

Surfer S1Not set

Debris loadNot set

Dolphin Nautilus CC SupremeNot set

Scuba S1 ProNot set

Surfer S1Not set

Sources

Where every figure comes from

Nautilus CC Supreme · Maytronics US product page (available for purchase); a hands-on review (poolbots.com), whose cable length differs inside the review
Scuba S1 Pro · aiper.com US product page; hands-on reviews, PCWorld 1 Jul 2024 and The Pool Nerd 24 Jan 2025
Surfer S1 · aiper.com US product page

Every value was read from the page named on 2 Oct 2026. Maker figures are the ones printed; "Not found" means the pages listed were opened and say nothing.

Questions

What readers ask

Can a cordless robot finish a 40 ft pool in one session?

On listed figures, yes for the Scuba S1 Pro (66 ft, 2,150 sq ft, 180 minutes). Maytronics lists 50 ft for the corded Nautilus. These are maker ratings.

Does the Nautilus CC Supreme need power at the pool?

Yes. It is corded, and Maytronics describes it as plug in, drop it in and go. Its cycle length of 1.5 or 2.5 hours does not depend on a battery charge.

How long does each one take to recharge?

Aiper lists 4 hours back to full for the Scuba S1 Pro. The corded Nautilus CC Supreme has no charging. No recharge time was found for the solar Surfer S1.

Common questions

What readers ask about this comparison.

Next up

Do pool robot skim-and-scrub modes replace a dedicated skimmer?

Read the comparison

Comparison ID: RV–CMP–3306 · Last reviewed Jun 11, 2026 · Based on owner reports, manufacturer documentation, and firmware release notes

Suggest a correction

How it gets its energy

Per cycle or per full charge

Time back to full

The limit each maker lists

Where the run time is spent

How each one fits a home like yours

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