| ST-BP5 — Specification | |
|---|---|
| Color | Black body, orange drive wheels and track guards |
| Plug type | Cordless body, no plug; charger plug matched to the destination order |
| Voltage | 25.2 V DC charging, charger rated 25.2 V / 2.2 A |
| Model | ST-BP5 |
| SKU | ST-BP5 |
| Power system | Differential drive with dual roller brushes |
| Total power | 45–60 W; 60 W maximum during wall climbing |
| Battery capacity | 4,500 mAh (6S1P, 21700 cells) |
| Charging time | Approx. 2.5 hours at 25.2 V / 2.2 A |
| Runtime | Approx. 150–170 minutes per charge |
| Water flow rate | 240–350 L per minute |
| Pool coverage | In-ground pools up to 300 m² |
| Cleaning surfaces | Pool floor, walls and waterline |
| Motor configuration | Three high-power brushless motors |
| Waterproof rating | IPX8 |
| Product dimensions | L384 × W386 × H242 mm |
| Net weight | 8.2 kg (18 lbs) |
What the ST-BP5 Wall Climbing Robotic Pool Cleaner Is
The ST-BP5 is a cordless robotic pool cleaner that cleans the whole in-ground pool envelope, not just the bottom: it works the floor, drives up the wall and runs along the waterline. It is built for in-ground pools up to 300 m², which puts it at the large end of the cordless category rather than in the small-pool bracket.
The machine is driven by three high-power brushless motors and a high-flow water circulation system, with a differential drive and dual roller brushes handling the movement. Total power is 45–60 W, and the upper figure is not a peak-on-paper number: 60 W is what the unit draws during wall climbing, when the drive has to hold the body against a vertical surface while the pump keeps working. Housing is IPX8, dimensions are L384 × W386 × H242 mm, and the complete unit weighs 8.2 kg.
There is no cable to the skimmer and no hose to a pump. That matters more on a wall climbing machine than on a floor-only one, because a hose hanging off the body is exactly what pulls a cleaner off the wall halfway up.
Wall Climbing: 60 W at the Wall, 45–60 W Total
Wall climbing is the specification that separates this model from a floor vacuum, and the power figure is where it shows. The unit runs at 45–60 W in total, reaching its 60 W maximum while it is on the wall.
The reason the number rises is straightforward. On the floor, the drive only has to overcome rolling resistance and the drag of the pump. On a vertical surface it also has to hold 8.2 kg of machine against gravity while the brushes keep turning and the pump keeps pulling water. A cleaner that climbs with the same power budget it uses on the floor is a cleaner that slips. Buyers comparing a wall climbing pool cleaner against a floor-only model should look for the wall figure specifically, because a single “45–60 W” range without a stated maximum is usually a floor rating dressed up as a total.
From Floor to Waterline: What Comprehensive Cleaning Covers
The cleaning envelope is the floor, the walls and the waterline. In practice that is three different problems, and they fail in different ways:
- Floor — leaves, sand and heavy debris settle here. This is the surface a floor-only vacuum handles, and it is the easiest of the three.
- Walls — biofilm and algae film cling to the vertical surface, where debris does not settle but grows. A cleaner that only presses down on the floor cannot address it.
- Waterline — the tile band at the water surface collects an oily film of sunscreen, body oils and dust, and it is the line every guest sees first.
Waterline cleaning is the part buyers underestimate. It is the most visible surface in the pool and the one that most cordless cleaners skip entirely, because reaching it means the machine has to climb to the surface, run sideways along the tile and stay attached while the water level moves. Covering all three surfaces in one cycle is the reason a wall climbing robotic pool cleaner can replace a floor unit plus a manual brushing routine rather than sit alongside them.
240–350 L per Minute Through a High-Flow Circulation System
The high-flow water circulation system moves 240–350 litres per minute. That is roughly two to three times the flow of a typical compact floor vacuum, and the volume is what allows the machine to work a pool of this size inside one charge instead of several.
Flow matters most on the wall and at the tile band, where the debris load is a thin film rather than a pile of leaves. A high flow rate lifts that film off the surface and holds it in the filter; a low-flow unit passes over it and leaves a clean-looking streak that is clean only until the water clears. For a buyer sizing a machine against a large pool, the useful arithmetic is flow multiplied by runtime: at 240–350 litres per minute over 150–170 minutes, one cycle moves somewhere between 36,000 and 59,500 litres through the filter.
Three Brushless Motors and Differential Drive
Three high-power brushless motors carry the three jobs on this machine: circulation, and drive on both sides. A differential drive means the two sides are controlled independently, so the unit turns by running one side faster than the other rather than by steering a rudder. On a wall that is what allows it to change direction along the tile without losing adhesion, and on the floor it is what lets the machine turn in a 300 m² pool without a turning circle it does not have room for.
Brushless motors are the reason the runtime figure holds up as long as it does. There are no carbon brushes to wear, so the motor does not lose efficiency over a season of use, and the heat that a brushed motor dumps into a sealed IPX8 housing is not generated in the first place. For a trade buyer the practical consequence is a machine whose 150–170 minute runtime at the start of the season is still the runtime at the end of it.
Dual Roller Brushes and Track Drive
The drive system is a differential drive with dual roller brushes, sitting inside a track layout on both sides of the body. The roller brushes do two jobs at once: they scrub the surface the machine is on, and they provide the grip the tracks need when the surface is vertical.
This is the mechanical reason a wall climbing pool cleaner works at all. Wheels alone lose traction on a smooth liner as soon as the surface tips past horizontal, and a body that size cannot be held on by suction from the pump alone without giving up flow. Roller brushes in contact along the full width of each side keep the machine driving rather than sliding, and the tracks keep the body parallel to the wall instead of letting it hang nose-down.
4,500 mAh at 25.2 V: 150–170 Minutes per Charge
The battery is 4,500 mAh arranged as 6S1P on 21700 cells, charged at 25.2 V / 2.2 A in approximately 2.5 hours, and it delivers approximately 150–170 minutes of running time. The pack is built from 21700 cells rather than the smaller 18650 format, which is what allows a 6S1P pack to carry the wall-climbing load without dropping voltage under the extra draw.
Runtime is the number that decides whether one charge covers one pool. A pool of that size with walls and a tile band is a longer job than a floor-only clean of the same footprint, and 150–170 minutes is sized for that: floor, walls and waterline in a single cycle, with the machine returning at the end rather than being retrieved halfway through. The battery is built into the body rather than swappable, so the 2.5-hour recharge is a planned part of the day rather than something an operator works around at the poolside.
In-Ground Pools up to 300 m²
The coverage figure is in-ground pools up to 300 m². That is the design target, and it is the line to check first when a buyer is matching the machine to a site.
Pool area and pool shape are not the same question. A pool of that size with a simple rectangle presents a shorter wall run than the same area split across an L or a freeform with steps and a spa spillover, and the wall run is where a climbing machine spends its time. For a dealer quoting a large domestic pool, the area figure settles whether the ST-BP5 is the right model; the wall run length settles how much of the cycle is left for the floor.
8.2 kg at 384 × 386 × 242 mm
The body measures L384 × W386 × H242 mm and weighs 8.2 kg (18 lbs). The weight follows from the wall-climbing drive and the 6S1P 21700 pack, and it is the figure that decides how the machine is handled at the pool.
8.2 kg is a two-handed lift out of the water rather than a one-hand lift, which is worth stating plainly for anyone moving from a small floor vacuum. It is also the figure that keeps the unit attached to a vertical surface: a lighter body with the same flow would need more suction to hold the wall, and more suction means less of the pump’s capacity left for cleaning. On the freight side, the 384 × 386 × 242 mm body sets the carton footprint, and a distributor planning a container should size the order against that carton rather than against the machine volume alone.
IPX8 and the Charging Routine
The housing is rated IPX8, which confirms the motor and battery compartment are sealed against continuous immersion. That rating is not optional on this machine: a wall climbing unit spends part of every cycle at the waterline, where the body is half in and half out of the water and the seals are worked harder than they are on a floor-only unit that never leaves the bottom.
Charging is 25.2 V at 2.2 A for approximately 2.5 hours, and the charger plug is matched to the destination order. That last detail is a shipping decision rather than a product one, and it belongs in the purchase order conversation: it decides whether a container can go to a single market or has to be split between two.
Who Buys the ST-BP5
This is a trade product. The buyers are the ones who need a wall climbing pool cleaner they can specify, stock and support rather than a unit for a single back garden:
- Pool equipment distributors adding a wall climbing model to a catalogue that already carries floor units, so the range covers the tile band instead of leaving it to a manual brush.
- Pool builders and dealers specifying the cleaner at the same time as the pool, on in-ground projects where this size is the upper end of the domestic range.
- Pool service companies running a route across larger pools, where one charge covering all three surfaces removes a separate brushing visit from the schedule.
- Hotels, resorts and clubs with a pool that is judged on how the tile band looks, where that line is the first thing a guest sees.
- Marketplace and online sellers who need a specification sheet the end customer can read before buying, with the wall-climbing power figure stated rather than implied.
- Pool shops and online resellers listing the model under their own catalogue entry, where the whole sheet has to sit in one place for the customer to compare.
What these buyers share is that the decision is made on the specification sheet. Wall climbing power, flow, runtime, area and weight are the five lines that get read, and they are the five lines this page puts in the table at the top.
Specifying a Wall Climbing Pool Cleaner for Resale
Five numbers on this sheet settle most of the questions that come back after a container lands:
- Wall climbing power — 45–60 W total, with 60 W maximum during wall climbing. The wall figure is the one that predicts whether the machine holds a vertical surface.
- Flow — 240–350 L per minute through the high-flow circulation system.
- Runtime — approximately 150–170 minutes per charge, with 2.5 hours to recharge at 25.2 V / 2.2 A.
- Coverage — in-ground pools up to 300 m², floor, walls and tile band.
- Weight and size — 8.2 kg at 384 × 386 × 242 mm, which sets carton volume, shelf space and how the unit is handled at the pool.
One further line belongs in the quotation rather than in the catalogue: the charger plug is matched to the destination order. That is the detail that decides whether a container can go to a single market or has to be split between two, and it is worth confirming before a purchase order is raised rather than after the cartons are printed.
Carton footprint follows from the 384 × 386 × 242 mm body rather than from the machine volume alone, so a distributor sizing a first container should plan on the packed dimensions before fixing a quantity.
Frequently Asked Questions
What is the ST-BP5 wall climbing robotic pool cleaner?
It is a cordless pool cleaner for in-ground pools up to 300 m² that cleans the floor, the walls and the waterline. It runs on a 4,500 mAh battery (6S1P, 21700 cells), uses three high-power brushless motors and a differential drive with dual roller brushes, and draws 45–60 W, reaching 60 W during wall climbing.
Does the ST-BP5 clean the waterline as well as the pool floor?
Yes. The cleaning surfaces are the pool floor, the walls and the waterline. It is not a floor-only vacuum; it climbs the wall and runs along the tile band within the same cycle.
How long does one charge last and how long does it take to recharge?
Approximately 150–170 minutes of running time per charge. A full recharge takes about 2.5 hours at 25.2 V / 2.2 A. The battery is built into the body rather than swappable.
How much water does the machine circulate?
240–350 litres per minute through the high-flow circulation system. Across a full 150–170 minute cycle that is roughly 36,000 to 59,500 litres passing through the filter.
What is the maximum pool size for the ST-BP5?
In-ground pools up to 300 m². Pool shape matters as well as area: a pool with long wall runs and a stepped or freeform outline uses more of the cycle on walls and waterline than a simple rectangle of the same area.
Why does the power figure rise during wall climbing?
Because the drive has to hold the 8.2 kg body against a vertical surface while the brushes and pump keep working. Total power is 45–60 W, and 60 W is the maximum during wall climbing.
How is the machine driven?
By a differential drive with dual roller brushes, controlled by three high-power brushless motors. The two sides run independently, so the unit turns by changing the speed of one side rather than by steering.
What does IPX8 mean on this model?
IPX8 is a water-ingress rating confirming that the motor and battery compartment are sealed against continuous immersion — which a wall climbing unit needs, since it works at the surface where the body is partly out of the water.
What are the dimensions and the weight?
L384 × W386 × H242 mm, with a net weight of 8.2 kg (18 lbs). At that weight the unit is lifted out of the water with two hands.
What colour is the ST-BP5 and what plug does it come with?
The body is black with orange drive wheels and track guards. The machine itself is cordless with no plug; the charger plug is matched to the destination order.
