The WYBOT B1 is light, cordless, and difficult to trust.

Dry weight About 14 lb

Claimed runtime Up to about 120 minutes in eco floor mode

Claimed charge time About three hours

Filter basket 2 liters with nominal 180-micron media

Cleaning reach Floor, walls, and waterline

Our Verdict

Skip the WYBOT B1 for large or complicated pools; consider it only for a small, simple pool when low weight and no cord matter more than perfect coverage, fine filtration, or dependable support.

Check Price on Amazon

The B1 is not a toy dressed up as a pool cleaner. Direct demonstrations show it collecting visible debris, crossing a raised main drain, climbing vertical walls, and reaching the waterline. Its four wheels, front and underside rollers, and small edge brushes give it more ambition than a basic floor-only cordless vacuum.

The trouble begins when capability is mistaken for consistency. Owners describe two sharply different machines: one that covers a pool, parks near the wall, and makes routine cleaning easier, and another that repeats corners, misses sections, becomes stranded on steps, or stops climbing walls after its first day. Both versions of the story appear in the direct B1 record.

That split matters more than the brightest demonstration or angriest review. Amazon’s captured listing showed a 3.5-star average from 101 ratings, but only eight review texts were retained for this assessment, so there is no defensible B1 failure rate hiding behind the decimal. The useful conclusion is narrower: pool shape and tolerance for touch-up cleaning have an unusually large influence on whether this compact robot feels clever or lost.

Cordless convenience stops at the water’s edge

The pleasant part is genuine. There is no power cable to arrange around the deck or untangle in the pool. The B1 is light for a machine that attempts the floor, walls, and waterline, and operation is basically charge, choose a mode, switch it on, submerge it, and retrieve it after the cycle.

Cordless does not mean unattended. Every run still ends with lifting a wet robot, allowing it to drain, opening the hood, emptying and rinsing the basket, drying the charging area, and charging again. The detailed B1 evidence also says there is no weekly timer, so this is not a machine that can remain in the pool and ration its battery across several scheduled cleanings. If that trade feels larger than expected, our corded versus cordless guide separates cable management from the less visible work of battery ownership.

The app selects modes; it does not steer underwater

The app can set cleaning modes, pool material, bottom shape, and other preferences while the robot is accessible, and B1 demonstrations show battery information and firmware-update support. No direct evidence shows live underwater steering or dependable mode changes after submersion. One owner’s blunt complaint that the app worked only out of the water is therefore less a surprise than a warning about how the feature is presented.

This limitation is normal for consumer wireless signals, but it matters more on the B1 because the physical control panel is poorly labeled. A detailed reviewer found its light-based controls hard to interpret without mode names or icons, making the app feel less like a bonus and more like the readable interface the machine itself should have had. Read how pool-cleaner apps communicate before treating “app control” as remote control.

The basket rinses easily once you win the argument with its latch

The filter basket itself is straightforward to hose clean, but reaching it is a recurring irritation. Amazon, a direct B1 video, and a B1 owner complaint on Trustpilot all describe a tight or awkward hood release. The lid is detached rather than hinged, its lever sits in a narrow space, and some owners need a firm downward pinch on the green area before lifting.

That distinction resolves another apparent contradiction in the reviews: the basket can be easy to rinse while the compartment remains difficult to open. Occasional debris loss during retrieval is also reported, even when the basket is not full, so lift slowly and let the body drain at the wall before bringing it fully onto the deck.

A sensible operating routine

1. Charge the B1 fully in a dry area away from the pool.
2. Confirm that the front charging-port door clicks shut and that its gasket is seated.
3. Select the mode and enter the pool material and bottom shape before immersion.
4. Lower the robot into the water and allow trapped air to escape.
5. Retrieve it slowly at the wall, let it drain, and switch it off promptly.
6. Empty and rinse the basket after a dirty run, then dry the charging area before reconnecting power.

Switching it off promptly is not busywork. One B1 demonstration reports that the robot can continue driving when it is placed flat on the deck after retrieval, so do not leave a running unit unattended beside the pool.

WYBOT B1, view 2

WYBOT B1, view 3

WYBOT B1, view 4

WYBOT B1, view 6

WYBOT B1, view 2

WYBOT B1, view 3

WYBOT B1, view 4

WYBOT B1, view 6

Where the B1 cleans well, and where it loses the plot

Ordinary floor debris is its strongest case

Leaves, bugs, dirt, sand, pebbles, and ordinary settled material repeatedly appear in B1 baskets. Even the owner whose unit failed after two months said it cleaned well before the failure. That is important: the case against the B1 is not that it lacks suction or cannot pick anything up.

Think of it as a maintenance cleaner for a pool that is already under control. Its nominal 180-micron basket is suited to visible debris, but a detailed B1 review says this model does not include an ultra-fine secondary filter. It is therefore a poor match for buyers trying to polish out heavy silt, fine dust, algae residue, or cloudy water. Our guide to what robotic cleaners can actually collect explains why basket fineness matters as much as suction claims.

The B1 can climb walls, but it cannot promise yours

Wall and waterline cleaning are real capabilities here, not title-page fiction. Direct footage shows the B1 climbing five-foot walls, reaching the waterline, and moving across a tanning ledge. The same evidence also shows that reaching a ledge is not the same as methodically cleaning it, and that the robot can skip a corner while transitioning between walls.

Owner experience remains contradictory. One B1 climbed well without falling or flipping, another became confused during wall cleaning, and another stopped climbing after its first day even after the supplied foam blocks were tried. If walls and the waterline are the main reason you are buying a robot, the B1’s ability to get there should not be confused with reliable wall coverage.

Pool geometry is the real specification

A raised drain and an ordinary floor-to-wall transition are manageable obstacles. Steps, shallow shelves, sloped sidewalls, and irregular corners are much less predictable. The clearest failure report came from a 33-by-16-foot pool with sloped sides, where the B1 lingered in a corner, became stranded on steps, and left areas untouched in both full-pool and floor-only modes.

That pool’s plan area was well below the coverage figures repeated in promotional videos, which is why square footage alone is a weak buying guide. A small rectangle or oval with clean transitions is the safer fit. A pool with several steps, a tanning shelf, pronounced slopes, or awkward corners asks the B1 to solve exactly the problems its direct evidence leaves unsettled.

A direct B1 owner comparison gives the coverage problem a useful benchmark. After three floor-only B1 cycles, dirt still remained in some areas, and the owner already missed the cleaning performance of an older corded Dolphin Nautilus CC Plus despite having abandoned that Dolphin because repairs were becoming expensive. This does not prove that every corded cleaner is better, but it does show how a cheap cordless purchase can lose its convenience advantage when it needs repeated runs.

Value depends on what the B1 saves you from doing twice

No live price was captured, so a responsible value judgment has to remain conditional. The B1 belongs in the budget edge of the full-pool cordless category, but a low checkout total is not enough if the cleaner needs a second cycle, misses the steps, or sends you back with a brush for the corners. A balanced direct review reaches much the same conclusion: the B1 functions, yet machines just above its tier can offer more efficient coverage and a more polished ownership experience.

It earns consideration when the pool is small and geometrically simple, routine debris is the problem, and lifting a lighter cordless cleaner matters more than ultra-fine filtration or automation. It is harder to justify for a large pool, a slope-heavy pool, or an owner expecting one-button perfection. The safest way to shop it is to compare its current selling price with the cost of a cleaner that has enough runtime and navigation margin for your actual pool, not the largest pool named in promotional material.

Buyers deciding between WYBOT’s entry models can use our WYBOT A1 versus B1 comparison, while those who are not committed to this brand should start with the best cordless robotic pool cleaners. If the B1 remains the choice, buy only through a seller whose return window and process you have checked before the robot gets wet.

The ownership risk is larger than one bad review

The most concerning direct B1 report is specific rather than merely angry. One owner said the unit cleaned well and then failed after two months; after receiving no useful help, the owner opened it and reported water in the motor and circuit-board areas, attributing the ingress to the seals. That is one owner’s teardown and diagnosis, not proof of a model-wide sealing defect.

Amazon’s listing says each unit is water-tested before shipment, but a factory test and a later leak report can both be true because a pre-shipment check does not establish long-term sealing durability. The direct report becomes harder to ignore because owners of other WYBOT models describe similar no-power, charging, internal-water, and early-failure problems, although those sibling reports must not be presented as B1 failures.

There are long-lived counterexamples across the brand, including owners reporting multiple seasons of regular use, so “all WYBOTs fail” would be as careless as calling the B1 proven durable. What the wider record establishes is inconsistent failure handling. Owners describe repeated requests for videos, slow exchanges, return-shipping friction, and conversations that stop before a resolution, while a smaller number report replacements or eventual repairs.

Trustpilot adds a separate credibility problem. At capture, the company’s score was unavailable after a platform-guideline breach, and Trustpilot said it had removed fake reviews; the platform also warns that it does not independently fact-check each customer claim. That means the page cannot supply a trustworthy failure percentage, but it can tell you not to treat manufacturer support as an invisible certainty.