Best Robotic Pool Cleaners of 2026: Corded vs. Cordless

For most family pools up to 40 ft (12 m) long, the best robotic pool cleaner in 2026 is still a corded model like the Dolphin S300i: it cleans the floor, walls and waterline with no battery to run down, and its fine filter lifts out from the top. If you want to ditch the cord, the Beatbot AquaSense 2 Pro is the most complete cordless option, while the Dolphin E35i is the sensible corded pick for a first robot.

This comparison is based on manufacturer specs, reviews in the specialist press and verified owner reviews. It covers six corded and cordless models sold in Europe and helps you choose for your pool rather than for the marketing copy. For an overview of smart pool equipment (pump, salt chlorine generator, sensors), see our smart pool guide.

How to choose a robotic pool cleaner

Floor only, or walls and waterline too

Entry-level robots clean only the floor. If your pool has vertical walls and a waterline that leaves a ring (oily film, scale, sunscreen), get a model that climbs the walls and scrubs the waterline. Every model in this comparison does. The Beatbot AquaSense 2 Pro goes further and skims the surface too, which helps if your pool is surrounded by trees.

Pool size and shape

Manufacturers list either a maximum length (40 ft, or 12 m, for the Dolphin S300i and E35i) or a surface area (up to 2,150 sq ft for the Aiper Scuba X1, up to 3,875 sq ft for the Beatbot). For a freeform pool with steps or a tanning ledge, look for sensor-based navigation, which gets around obstacles better than a random pattern. For an above-ground pool, check that the robot is rated for soft walls.

Filter rating

Filters are rated in microns (µm): the lower the number, the finer the particles they catch. A 150 to 180 µm filter handles leaves and sand; an ultra-fine filter (60 µm on the Zodiac, down to 3 µm with Aiper’s MicroMesh) traps the pollen and dust that cloud the water. The catch: a very fine filter clogs faster and needs a rinse after every cycle.

Corded or cordless: runtime

A corded robot runs as long as it’s plugged in, which makes it ideal for regular, scheduled cycles. A cordless robot does away with a tangled cord and goes in the water in seconds, but runtime is limited (about 2.5 hours for the Liberty 400 and Freerider, 3 hours for the Aiper Scuba X1, up to 5 hours on the floor and walls for the Beatbot) and it has to recharge between runs.

App and Wi-Fi

The apps (MyDolphin Plus, iAquaLink, and the Beatbot and Aiper apps) are mostly for starting a cycle, picking a mode and setting a schedule. Wi-Fi doesn’t travel through water: on corded robots, it’s the power supply that connects; cordless robots usually communicate once they’re out of the water or through dedicated technology (LiFi on Zodiac and Dreame models, underwater communication announced by Aiper).

Caddy, weight and maintenance

A robot that weighs 18 to 24 lb (8 to 11 kg) and is full of water is awkward to lift. The Dolphin E35i comes with a caddy cart; the Liberty 400 and Freerider have systems that bring the robot up to the waterline for you. Check filter access too: a top-access filter, like the one on the S300i, empties without flipping the robot over.

The 6 best robotic pool cleaners of 2026

1. Dolphin S300i: best overall

Maytronics’ Dolphin S300i is designed for pools up to 40 ft (12 m). It cleans the floor, walls and waterline with two active brushes and PowerStream technology, which directs the water jet so the robot holds onto the walls. Its 59 ft (18 m) cable has an anti-tangle swivel, and the multilayer filter lifts out from the top, in fine or ultra-fine versions. The default cycle runs 2 hours, and you control it with the MyDolphin Plus app. Maytronics lists a 3-year warranty.

Pros: no battery to manage, easy filter access, a brand widely carried by European pool dealers for service and repairs. Cons: you still have to lay out and coil up the cable; no surface skimming. Best for: standard in-ground pools up to 40 ft that get cleaned several times a week.

2. Dolphin E35i: best value

The Dolphin E35i shares most of what the S300i offers: pools up to 40 ft (12 m), floor, walls and waterline, a 2-hour cycle, two brushes, PowerStream, a 56 ft (17 m) swivel cable and the MyDolphin Plus app. It ships with a caddy cart and a combination filter kit that includes an ultra-fine filter.

Pros: full equipment for a midrange robot, caddy included. Cons: 2-year stated warranty, filter access less convenient than on the S300i. Best for: a dependable first corded robot without paying for premium extras.

3. Beatbot AquaSense 2 Pro: the most complete cordless

The Beatbot AquaSense 2 Pro is a “5-in-1” robot: floor, walls, waterline, surface skimming and water clarifying, using a natural agent that clumps fine particles together. Its 13,400 mAh battery is rated for up to 5 hours on the floor and walls and up to 11 hours in surface mode. It covers up to 3,875 sq ft (360 m²), navigates with ultrasonic sensors, filters down to 150 µm with two filters (fine and ultra-fine) in a 1-gallon (3.7 L) basket, and connects over Wi-Fi or Bluetooth.

Pros: the longest runtime in this comparison, surface skimming, built for large pools. Cons: premium model, about 25.1 lb (11.4 kg) out of the water, clarifier refills to rebuy. Best for: large pools surrounded by trees and plants, and anyone who’s done with cords.

4. Aiper Scuba X1: the versatile cordless

The Aiper Scuba X1 cleans the floor, walls and waterline for up to 180 minutes, in pools up to 2,150 sq ft (200 m²) or 66 ft (20 m) long. Its MicroMesh filtration goes down to 3 µm, backed by a filter basket, and it recharges in about 4 hours on its dock. WavePath navigation adjusts its cleaning paths, and the app lets you pick a mode (floor, walls, waterline, full clean).

Pros: very fine filtration, good coverage for a midrange cordless. Cons: enough runtime for one pass, not several cycles back to back; the ultra-fine filter needs frequent rinsing. Best for: medium to large pools where pollen clouds the water.

5. Dolphin Liberty 400: Maytronics goes cordless

The Dolphin Liberty 400 brings Dolphin’s know-how to a cordless robot. Its 126 Wh lithium-ion battery is rated for up to 2.5 hours of cleaning on the floor, walls and waterline. It charges by induction through a magnetic connector, so there’s no exposed charging port near the water. The Click Up feature brings the robot to the wall so it’s easier to lift out, and the MyDolphin Plus app handles the cleaning programs.

Pros: inductive charging, easy to retrieve, the Dolphin dealer network. Cons: designed for medium-size pools; shorter runtime than the Beatbot. Best for: family pool owners who want cordless convenience from an established brand.

6. Zodiac Freerider RF 5600 iQ: dual filtration, no cord

The Zodiac Freerider RF 5600 iQ cleans the floor, walls and waterline of pools up to 40 × 20 ft (12 × 6 m), whatever their shape. Its battery delivers a full 2.5-hour cycle and recharges in 4 hours. It pairs a 150 µm filter for large debris with a 60 µm filter for fine particles. A LiFi remote lets you steer it, and the iAquaLink app shows the battery level and tells you when the cycle is done.

Pros: well-designed dual filtration, manual steering with the remote. Cons: limited to pools up to 40 × 20 ft. Best for: freeform pools where you want to take over and target one spot.

Comparison table

Browse every available model in our robotic pool cleaners category.

Mistakes to avoid

• Buying a cordless robot for a very large pool without checking runtime: if the battery dies mid-cycle, the robot sits on the bottom and part of the pool doesn’t get cleaned.
• Underestimating the waterline: a floor-only robot leaves behind the greasy ring, which is the part everyone sees.
• Forgetting to rinse the filter: a clogged filter cuts suction and can strain the robot’s pump motor.
• Leaving the robot in the water all the time: chlorine and UV rays wear out the plastics, brushes and cable faster.
• Ignoring service and repairs: make sure parts (brushes, tracks, filters) are available from a dealer near you.

Installation, use and safety

For a corded robot, set the power supply well back from the pool, out of the rain and the splash zone, at the distance given in the manual, and plug it into a GFCI-protected outlet. Fully uncoil the cable before you lower the robot into the water to limit twisting. For a cordless robot, charge the battery in the shade, out of the water and on a dry surface, with the original charger.

Never swim while the robot is running. Take it out after each cycle, rinse the filter with clean water, and keep the robot out of the pool while you shock it or winterize it. In the off-season, store it somewhere dry where it won’t freeze; for cordless models, follow the manufacturer’s advice on the charge level for storing the battery.

A robot doesn’t replace your pool’s filtration system: it backs up the pump and the sand or cartridge filter. To automate the rest (pH, chlorine, lighting), see our smart pool guide, and for the yard around the pool, our smart yard guide.

The bottom line

For a standard in-ground pool up to 40 ft (12 m), the Dolphin S300i is the most balanced choice: complete cleaning, easy filter access and no battery to worry about. The Dolphin E35i gives you almost all of that, plus a caddy, at a more affordable tier. If you want to get rid of the cord, or your pool is large and surrounded by trees, the Beatbot AquaSense 2 Pro is the most complete option thanks to surface skimming and long runtime. The Aiper Scuba X1, Dolphin Liberty 400 and Zodiac Freerider RF 5600 iQ are solid cordless alternatives, depending on whether you care most about filter rating, a dealer network or manual control.