Mamibot
Mamibot iGLASSBOT W168
- Autonomy
- IIAssisted
- Score
- Not scored
- Readiness
- Not assessed
- Price
- Not tracked
ComparisonMamibot iGLASSBOT W168 and Kärcher RCW 2
Kärcher
Kärcher RCW 2
- Autonomy
- IIAssisted
- Score
- Not scored
- Readiness
- New to Market
- Price
- Not tracked
Up to three
Autonomy Ladder
- IManual
- IIAssisted
- IIIConditional
- IVEnvironmental
- VGeneralized
All robot window cleaners. Every figure below is placed against the whole class, so a gap can be read against how much the class itself varies.
Where each one suits you.
The conditions each robot was assessed against, side by side. Rows marked in gold are where these machines genuinely differ.
| Condition | Mamibot iGLASSBOT W168 | Kärcher RCW 2 |
|---|---|---|
| Window style | ||
| Standard residential | GoodRoute-planned stripe cleaning across three modes is built for a single mounted pane, the size class most residential windows fall into. | GoodTwin rotating discs and ultrasonic misting are built for ordinary single-pane residential windows, Kärcher's documented core use case. |
| Large panes (8 ft+)they differ | GoodManufacturer guidance names large fixed panes and smooth tiled walls as this model's strongest documented match. | DependsThe 70 mL tank covers about 50 sq m per fill; larger glass walls may need mid-job detergent refills. |
| Specialty / textured | Poor3,000 Pa is the ceiling and the only adhesion method; Mamibot's own guidance excludes textured or leaded panes outright. | PoorContinuous suction contact assumes smooth flat glass; leaded or heavily textured panes are not part of the documented design. |
| Frame style | ||
| Frameless / minimalthey differ | GoodEdge detection and suction adhesion work directly on the glass surface, so minimal or absent framing doesn't limit where it mounts. | DependsSuction should hold on flat frameless glass, but no independent review confirms edge behavior without a frame lip. |
| Standard mullions | GoodStandard mullions sit outside the mounted pane; the robot's edge detection and suction hold to the glass itself, not the frame. | GoodStandard framed residential windows match Kärcher's documented cleaning mechanism and are the product's core target surface. |
| Heavy bezelsthey differ | DependsThe square-body's route-planned stripe pattern assumes flat glass; clearance against a raised heavy bezel lip isn't documented. | PoorGrilles or muntins dividing a pane interrupt the twin-disc wiping path this design depends on. |
| Building height | ||
| Single-story | GoodGround-level panes carry the lowest stakes; the UPS and rope layers matter here too but the consequence of any lapse is smaller. | GoodGround-floor windows need no tether reliance; power cord reach and outlet access are the only real constraints. |
| 2 – 3 storiesthey differ | GoodA rated 30-minute UPS holds suction on a power cut, plus an alarm and rope, covering this height band. | DependsA 4-meter safety tether and 5-meter power cord must both reach a secure anchor and outlet upstairs. |
| 4+ storiesthey differ | DependsThe rated UPS, alarm and rope give real fall protection, but no source validates performance specifically at 4-plus story height. | PoorThe fixed 4-meter tether is documented for reachable indoor anchors, not the reach a true high-rise installation needs. |
| Power preference | ||
| Corded OK | GoodRuns on mains power through a 5-meter extension cord for every cleaning session; that is the primary and only continuous supply. | GoodThis is a mains-corded design by default; a nearby outlet within cord reach is all it requires. |
| Cordless preferred | PoorRated at 72W over a 5-meter mains cord; the 500 mAh UPS is a power-cut backup only, not a cordless supply. | PoorNo cordless or battery-only operating mode exists; the 5-meter power cord runs the cleaning cycle throughout. |
| No preference | GoodWith no preference given, mains operation and a rated 30-minute UPS backup fit this reader either way. | GoodWorks fine for a reader with no power-source preference, since it runs entirely corded off mains power. |
A robot being poor for a condition is a fact about fit, not a fault. “Depends” means the record names a limit worth reading, not that the answer is unknown.
How far apart is a long way?
A number only means something next to the spread it sits in. Each track is the real range across every classified robot in the class, with the median marked.
Noise23 with a published figure
68 dB70 dB
- Mamibot iGLASSBOT W16868 dB
- Kärcher RCW 270 dB
62 dBmedian 68 dB75 dB
Weight27 with a published figure
2.4 lbs2.4 lbs
- Mamibot iGLASSBOT W1682.4 lbs
- Kärcher RCW 22.4 lbs
2 lbsmedian 3.4 lbs4.8 lbs
Height25 with a published figure
3.4 in2.8 in
- Mamibot iGLASSBOT W1683.4 in
- Kärcher RCW 22.8 in
2.2 inmedian 3.1 in9.4 in
Not compared, because fewer than two of these robots carry a published figure: Price, Suction, Runtime, Charge time.
What the numbers leave out.
Written on each record, and the only thing here every robot on the site carries.
The trade-off
What each design gives up to be good at what it is good at.
Mamibot iGLASSBOT W168
Dual water spraying ends the earlier generation’s hand pre-wetting step, but pane-to-pane repositioning remains a manual task on every run.
A 500 mAh UPS rated to hold suction for 30 minutes after a power cut: real safety engineering, undercut by an unpublished list price.
No independent source has tested this specific model; its completion and coverage claims rest entirely on Mamibot’s own documentation.
Kärcher RCW 2
The tether and power cord are a safety feature and a constraint in the same breath: the 4-meter tether decides which windows this unit can reach before it ever touches the glass.
The emergency battery buys 40 minutes of suction during a power cut, not indefinite operation, because it exists to prevent a fall, not to keep the cleaning cycle running.
Mains dependency: no cordless mode, so every session starts by finding an outlet within reach of the 5-meter cord.
Who each one is wrong for
Stated by the record itself. A robot being wrong for a household is a fact about fit, not a fault.
Mamibot iGLASSBOT W168
- Buyers expecting the robot to move itself between windows
- It cleans one mounted pane and returns to its start point; moving it to the next window is a manual step, with no autonomous relocation between panes documented.
- Textured, leaded, or heavily patterned glass
- Suction tops out at 3,000 Pa and the unit holds itself on the glass with that figure alone; textured or leaded panes fall outside documented scope.
- Small or occasional single-pane jobs
- Every run means placing the robot, managing the safety rope and the 5-meter cord by hand; that overhead outweighs the benefit on a small or infrequent pane.
- Buyers wanting independent verification of pane-cleaning performance
- No independent source addressing the W168 specifically was found; available third-party coverage tested sibling models with materially different results, leaving this model's own performance unconfirmed.
Kärcher RCW 2
- Windows with no nearby power outlet
- The RCW 2 has no cordless or battery-only mode; a window more than the 5-meter power cord's reach from an outlet cannot run a cleaning cycle.
- High-rise panes beyond the tether's documented reach
- The 4-meter safety tether is built for reachable interior anchors on lower floors, not the height and anchor distance a true high-rise installation needs.
- Leaded, heavily textured, or decorative glass
- Continuous suction contact from the twin cleaning discs assumes smooth flat glass; Kärcher's documented mechanism is not built for leaded or heavily textured panes.
- Grille-divided or heavily mullioned windows
- Dividers crossing the pane interrupt the twin-disc wiping path the cleaning mechanism depends on, so heavily divided-light windows are a poor match.
- Buyers wanting proven reliability before purchasing
- No independent reviews, owner reports, or field failure record exist yet for a product that only debuted at IFA 2026; that evidence gap is real.
What stays your job
The upkeep ownership hands back to you, whatever the autonomy level says.
Mamibot iGLASSBOT W168
- After every use: Wash both microfiber cleaning cloths and let them dry fully; six cloths ship in the box, so a dry set is always ready.
- After every use: Empty the 80 ml water tank, wipe the body down with a soft dry towel, and check the safety rope and extension cable for wear.
- As needed: Swap in a dry cloth mid-job if the robot slips or streaks; replace worn-out cloths, which Mamibot classes as wear items with no published replacement interval.
- As needed: Clear the two spray nozzles with the supplied cotton swabs when spraying stops on a full tank; a nozzle that will not clear needs replacing.
- As needed: Re-seat the two cleaning rings and cloths if the suction alarm signals an air leak; the teeth on the body must sit in the ring slots.
- As needed: Tighten the rotating-plate screws if movement turns rough or uneven.
- Every 3-6 months: Recharge the backup battery during storage; Mamibot specifies a full charge (about 2.5 hours) at least every 3 months to prevent deep-discharge.
Kärcher RCW 2
- After every use: Wipe down the twin microfiber cleaning discs and check for trapped debris before storage.
- After every use: Refill the 70 mL detergent tank ahead of the next cleaning session.
- Monthly: Inspect the 4-meter safety tether and its anchor point for fraying or wear.
- Monthly: Check the two ultrasonic misting nozzles for mineral buildup or clogging.
- Every 3-6 months: Replace microfiber cleaning discs once wiping leaves streaks or residue.
- As needed: Wipe down the 5-meter power cord and check the plug and outlet for damage.
How much each of these is standing on.
Classifications rest on different depths of evidence. A pre-release assessment and a verified one are not the same kind of claim.
| Robot | Evidence status | Sources reviewed | Last assessed |
|---|---|---|---|
| Mamibot iGLASSBOT W168 | Pending | 3 | Sep 2026 |
| Kärcher RCW 2 | Pending | 3 | Sep 2026 |
Evidence status counts the sources behind a classification, not their kind. A high count can be maker documentation and price coverage, so read it as how much was reviewed rather than as independent testing. How we weigh evidence.
Keep going.
The full recordMamibot iGLASSBOT W168Specifications, evidence, the Fit Check in full, and every tracked change.
The full recordKärcher RCW 2Specifications, evidence, the Fit Check in full, and every tracked change.Robovations classifies robots; it does not rank them. Nothing on this page is a recommendation, and no manufacturer influences a classification or its placement here.
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