B1
Limited evidenceRead the findings →WYBOT's light cordless robot for above-ground and smaller in-ground pools, cleaning the floor, walls and waterline. It's quick to set up and works methodically. It's only rated for fairly flat floors, so steep deep ends are out.
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Check the manufacturer’s site for current availability.
Where it sits in WYBOT’s range
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What we know
Popular Science gave the B1 a short hands-on test. Its tester found it quick to set up, methodical rather than random, happy on a sloping side and easy to empty and lift out. Other pages calling themselves reviews, such as PoolRobotLab, only repeat that test and the spec sheet. Everything else, including the two-hour runtime and the limit on floor slope, comes from WYBOT.
Popular Science, hands-on, Apr 2026 · PoolRobotLab, hands-on (Restates the Popular Science test and the spec sheet; no testing of its own)
Easy to set up and run
Popular Science's tester had it charged, paired with the app and running in under five minutes. You pick your pool layout and a cleaning mode in the app, then drop it in. With no cable to thread or coil, the tester saw it as a big win for a pool far from a power socket. The app offers floor-only, floor and wall, and waterline modes, per Popular Science, and WYBOT adds a wall-then-floor combination and custom routes.
Methodical, and edges get attention
Popular Science found it cleans the floor in lanes instead of wandering, and swings round the curve of the wall at corners. A tricky sloping side didn't strand it either. Two brushes at the front corners sweep debris towards the intake, which the tester credits for how well it follows edges.
Light to lift, parks at the wall
At about 6.5kg dry, per WYBOT, it's one of the lighter wall-climbers, and Popular Science found getting it out a one-handed lift. It parks by the side wall when a run ends, and you grab it with the supplied hook. The filter basket unclips from the top, and Popular Science found it hosed clean faster than a cycle takes. Brushes and filter come off without tools.
Still to be checked
Nobody has measured how much debris it picks up, how it copes with fine dirt or leaves, whether it really runs for two hours, or how it holds up over a season. WYBOT rates it for floors sloping less than 15 degrees, so steep deep ends are outside its design, and its claimed pump flow is lower than the C1's. The warranty is one year.
Our take
Should you buy the B1?
Best for: Smaller pools whose owners want a lighter robot to lift out. Skip it if: Your pool is large or has steeply sloping surfaces.
a fair choice for an above-ground or small, flat in-ground pool if you want a light cordless robot that also does the walls and waterline. For a bigger or steeper pool the WYBOT C2 has more tests behind it, and if you only need the floor of a small pool cleaned the Aiper Seagull SE is cheaper still.
The B1 sits near the bottom of WYBOT's cordless range, above the floor-only A1 and below the C1 and C2. Unlike the A1 it climbs walls and scrubs the waterline, with side brushes at the front corners for edges. It's small and light, at about 6.5kg dry, runs for up to two hours and parks by the pool wall when it's done.
Popular Science gave it a short hands-on test and found it quick to set up, methodical rather than random in its route, happy on a sloping side and easy to empty and lift out. That test didn't measure debris pickup. WYBOT rates it for pools up to about 107m² with fairly flat floors and quotes a pump flow well below the C1's. The warranty is a year, where the C1 and C2 get two.
Where to buy
Where to buy the B1 in United States
No United States price checked in the last 21 days. We re-check daily.
We’re still looking for more United States retailers for this model.
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Before you buy
The questions people ask about this one
Will it work in an above-ground pool?
Yes. It's designed for above-ground and smaller in-ground pools up to about 1,150 sq ft, with floors sloping under 15 degrees, per the specifications. Popular Science says a standard 16 × 32ft backyard pool only just fits.
Does it climb walls and clean the waterline?
Yes. It has wall, waterline-only and full modes, per the specifications. Popular Science found it followed the curve of the wall at corners and wasn't stranded by a sloping side, but didn't say how clean the waterline looked afterwards.
Is it cordless, and how long does a charge last?
Yes. WYBOT claims up to 120 minutes from a three-hour charge, per the specifications. Popular Science says that's enough for one full cycle in a pool that doesn't need a second pass the same day. None of the reviews we use has timed it.
How do I get it out of the water?
It parks by the side wall after a run, and you lift it out with the supplied hook and a pole. Popular Science found it light enough to lift one-handed. It weighs about 6.5kg (14.2lb) dry, per the specifications.
How do I clean the filter?
Unlatch the basket from the top and hose it off. Popular Science found it came clean in less time than a cleaning cycle takes. The filter is a single 180-micron cartridge, per the specifications, with no finer option listed.
Alternatives
Other robotic pool cleaners to compare.
C2
Why consider it: A cordless robot that cleans the floor, walls and waterline and parks at the edge, and two testers found it simple and effective.
The compromise: The Pool Nerd found its suction weak, and one owner reports it failed after eight months.
Seagull SE
Why consider it: A small, light cordless robot that testers found a handy cheap helper for sand and small debris on flat floors.
The compromise: It won't touch walls and stalls on big leaves.
Sora 10
Why consider it: A small, light cordless robot that cleans the floor, walls and waterline, and testers found it gets the pool clean given time.
The compromise: Testers found it wanders, skips steps, and may sink again if you're slow to collect it.
Specs
Full specifications
Each specification names its source. Manufacturer claims are not independent test results; unconfirmed figures are labelled.
Owner reviews
Do you own the B1?
Tell people how it’s held up: cleaning, maintenance, faults and support. Owner accounts are shown separately from independent reviews.
Sources
Where this page’s findings come from
Editorial reviews
- Popular Science: The Wybot B1 is a robotic cordless pool cleaner that ditches the cables without blowing out your budget ↗Hands-on
- PoolRobotLab: WYBOT B1 Review (2026) ↗Hands-on · Restates the Popular Science test and the spec sheet; no testing of its own (not counted towards our two-review minimum)
Sources
- WYBOT: WYBOT B1 Cordless Robotic Pool Cleaner ↗Manufacturer
- WYBOT Europe: WYBOT European store ↗Manufacturer
Videos
- TechDaily: NEW WYBOT B1 Robotic Pool Cleaner! Budget-Friendly & Ultra-Light ↗
- Definitely David: Small... But MIGHTY! Wybot B1 ↗
- Search YouTube for WYBOT B1 ↗Search results may include company demonstrations or similar models. Check the source and model name; a demonstration is not an independent performance test.