Cost to own
Cordless pool robots over five years: battery degradation as the hidden cost
A cordless pool robot's battery holds less charge each season. This page sets out what each maker states about runtime, charging and warranty, then prices the parts each maker lists over three years.
This page checks
- Three years, pricedList price plus the parts each maker prices
- What you replaceEach part, how often, and a year of it
- Failures that need youOf those on each record
- Warranty and batteryLength, and whether the battery is named
- Runtime and chargingThe margin a worn battery eats into
Beatbot
Where to buy
Aiper
Where to buy
Stock and price not shown on Aiper's US product page on 2 Oct 2026
Gains OTA update with adaptive path planning and cleaning schedule
Maytronics
Where to buy
Maytronics unveils Dolphin EON 120d cordless pool cleaner at CES 2026
Wybot
Where to buy
Wybot's page lists a newer C2 beside it; C1 still open for orders
Full specifications17 figures on record · 13 differ
AquaSense 2
Scuba S1
Dolphin EON 120d
C1Some links earn Robovations a commission. Nothing on this page is ranked by it. Affiliate disclosure.
Five seasons of battery
What each maker states about a battery that wears
Up front the four run from $570 to $1,298. No three-year total is closed for all of them: at least one has no part with both a price and an interval.
AquaSense 2Scuba S1Dolphin EON 120dC1Three years, priced
Robot plus 3 years of priced parts. One scale.
The robot at list price, then three years of the parts its maker sells, at maker prices and maker intervals. A plus sign marks parts with no price or interval, not counted.
- AquaSense 2
- $1,298+$1,298 robot. None of its 2 parts has a maker price and interval yet, so no part is counted.Maker store prices
- Scuba S1
- $1,220+$799 robot, then $140 a year in parts. 3 not counted.Maker store prices
- Dolphin EON 120d
- $1,199+$1,199 robot. None of its 2 parts has a maker price and interval yet, so no part is counted.Maker store prices
- C1
- $690+$570 robot, then $40 a year in parts. 2 not counted.Maker store prices
AquaSense 2 Beatbot warranty page and product page · Beatbot warranty page · Beatbot product pageScuba S1 Aiper product page; warranty page not found · Aiper product pageDolphin EON 120d Maytronics US product page · Maytronics US product pages · Maytronics blog and US product pageC1 Wybot product page · Wybot product page, support and terms pages
Same on all four: cordless and battery powered. None of the pages opened gives a battery cycle life, a capacity-retention figure or a replacement battery price.
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.
Everything else
Where they land among 76 robot pool cleaners
Only the measures on which these four differ. The bar is the whole category; the block is the typical middle half; the tick is the median.
Sources
Where every figure comes from
- Beatbot AquaSense 2 · Beatbot product page, warranty page, FAQ and help center (beatbot.com), read 2 Oct 2026
- Aiper Scuba S1 · Aiper US product page (aiper.com/us), read 2 Oct 2026
- Maytronics Dolphin EON 120d · Maytronics US product pages and cordless blog post (maytronics.com/en-us), read 2 Oct 2026
- Wybot C1 · Wybot product page, support and terms pages (wybotpool.com), read 2 Oct 2026
Figures were read from each maker's own pages on 2 Oct 2026. Where a page was silent, the cell says Not found; no battery wear figure was estimated. Parts totals count only parts with a maker price and interval.
Questions
What readers ask
Can the battery be replaced when it wears out?
Not found. None of the four product pages, and Beatbot’s warranty page, say whether the battery is user-replaceable or sold as a spare. Ask the maker before buying.
Does a longer rated runtime mean the battery wears more slowly?
No page opened gives a cycle life or capacity-retention figure, so runtime says nothing about wear. A longer rated runtime does leave more margin as capacity falls.
Is the Wybot C1 still sold?
Wybot’s C1 page was open for orders on 2 Oct 2026 and showed its newer C2 beside it. Whether C1 parts stay available after a replacement model was not found.
Questions