Cordless vs corded robot pool cleaners: what the datasheets say

The fork, and why the specs are not interchangeable

Cordless and corded cleaners answer different questions. A cordless robot runs off a battery and stops when that battery is spent, so runtime is its governing limit. A corded robot draws power continuously through a cable, so it has no runtime ceiling, but the cable length caps how far it can travel from the outlet. You cannot compare a battery runtime to a corded cycle time as if they were the same number: one is a hard energy limit, the other is a programmed default.

This guide treats each figure on its published basis. Where a manufacturer flags a measurement condition, we carry the flag. Where a manufacturer publishes nothing, we say so rather than fill the gap. We have not hardware-tested any of these units; every figure below is an attributed manufacturer claim.

Cordless: runtime is a claim with a basis attached

Runtime is the headline cordless spec, and it is rarely a single clean number. The Wybot C2 Vision publishes up to 180 minutes, but Wybot states that 180 minute figure is the Eco Mode runtime, an up-to figure, so heavier cleaning modes run shorter. The Aiper Scuba S1 lists up to 180 minutes in its spec table, while Aiper's own comparison table on the Scuba S1 Pro store page lists the same robot at up to 150 minutes. The Aiper Scuba S1 Pro publishes up to 180 minutes with the mode unspecified, under Aiper's controlled-test-environment disclaimer.

Beatbot is the clearest case of why basis matters. The Beatbot AquaSense 2 publishes up to 4 hours of continuous floor cleaning, a floor-only basis that does not cover walls and waterline, so we decline to chart it as a whole-pool runtime. The Beatbot AquaSense 2 Pro publishes only an up-to-11-hours continuous surface cleaning claim, again a different basis than whole-pool runtime, so no comparable runtime figure exists for it either. A number without its basis is not a runtime you can plan a cleaning session around.

• Charge time is published where runtime is: Wybot C2 Vision 3 hours, Aiper Scuba S1 up to 4 hours, Beatbot AquaSense 2 about 4 hours, Beatbot AquaSense 2 Pro 4.5 hours.
• Retrieval differs by design: the Beatbot units surface-park and are collected from the waterline; the Wybot C2 Vision self-parks at the pool wall with an included hook; the Aiper Scuba S1 publishes no self-parking and ships a retrieval hook.

Corded: no runtime ceiling, but cable reach is the spec

A corded cleaner runs as long as you leave it plugged in, so its constraint moves from time to distance. The relevant number is cable length, and it is the one corded buyers should insist on seeing. The Polaris EPIC 8642 iQ publishes a 60 ft cable with a tangle-reducing swivel, and is rated for in-ground pools up to 50 ft. That published reach is exactly what lets us place it on the site.

The corded cleaner's cycle time is a separate axis. The Polaris EPIC 8642 iQ publishes 2:30 for its floor, wall and waterline mode and 1:30 for floor-only, adjustable in the iAquaLink app. That is a programmed cleaning cycle, not an energy limit, and it should never be read as if it were a battery runtime.

The held Dolphins: why a missing cable length keeps a model off the roster

Our bar for a corded model is a published cable length. Three Maytronics Dolphins fail that bar, and the reason is worth telling as method. The Dolphin Nautilus CC Plus with Wi-Fi, the Dolphin Premier, and the Dolphin E10 are all held from our roster because Maytronics does not publish a floating cable length on the datasheet for any of them.

In each case the surrounding specs exist. Maytronics publishes a 2 hour default cycle and 4500 gph suction rate for the Nautilus CC Plus, a 3 hour default cycle for the Premier, and a 1.5 hour cycle with 4000 gph for the E10. What is absent is the one spec that defines a corded cleaner's working envelope. Replacement swivel-cable parts exist in Maytronics' catalog at various lengths, and the E10's global page lists a 12 m figure, but a spare-part listing is not the robot's datasheet and the global figure is region-caveated and conflicts with the US page. We decline to substitute those for a published cable length. These three have no pages on the site; they appear here only to show the rule in action.

How to choose, tied to specs not to our opinion

The right side of the fork depends on your pool and your tolerance for basis-flagged claims. If you want cord-free operation and can plan around a runtime that is an up-to figure, the cordless field is where to look: the Wybot C2 Vision for camera-guided navigation with a mode-specific 180 minute Eco runtime, the Aiper Scuba S1 at the lowest price we track with a 3-micron secondary filter, or the Aiper Scuba S1 Pro and Beatbot AquaSense 2 Pro if you want the largest published capacity ratings we track, 66 ft of pool length and 3,875 sq ft of pool bottom area respectively, and can accept premium pricing.

If you would rather not manage a battery at all and your pool is within a known cable reach, corded removes the runtime question entirely. The Polaris EPIC 8642 iQ is the corded model that clears our bar, because Polaris publishes the 60 ft cable that defines its working envelope. For a direct head-to-head across the fork, the Polaris EPIC 8642 iQ vs Beatbot AquaSense 2 Pro comparison sets a published-cable corded unit against a battery flagship. Whichever way you lean, buy on the spec you can verify, and treat any figure without a stated basis as unproven.