Window cleaning robot

Mamibot iGLASSBOT W300 review

Mamibot's flagship with a squeegee: 8,000 Pa, a 215 ml tank for 35 m², four-side edge sensors, five modes, a 650 mAh backup for 25 minutes and a combined cable and rope, for glass, tiles or marble.

Shop links are affiliate links: a purchase through them may earn RoboVerdict a commission, which never changes a ranking.

8,000 PaNot published25 min backupSpray system

Review method: Specification analysis

Our verdict

The W300 puts the biggest tank in the category, 215 ml for about 35 m², behind a spray-wipe-squeegee sequence Mamibot calls TriAqua: four nozzles on two sides wet the glass, a microfibre pad wipes, and an adaptive squeegee drags the water off so nothing dries into streaks. Mamibot's category page states 8,000 Pa, and SecureGrip monitors the suction and adjusts the motor to hold it. Four-side edge sensors read the boundary on every side, and a four-side brush ring is meant to reach the corners. There are five modes, app control with over-the-air updates, a 650 mAh backup battery for 25 to 30 minutes if the power fails, a combined power cable and safety rope, and a noise figure of 70 dB. It is rated for glass, tile, marble, wooden doors and other smooth vertical surfaces. The gaps: no weight, no rope rating, no cable length, no cleaning speed, no maximum pane, no voice prompts, and a one-year warranty with six months on the battery. Mamibot's site terms allow no reuse of its images, so there is no photograph here.

Pros

  • 215 ml tank for about 35 m², the largest in the category
  • Spray, wipe and squeegee in one pass; 8,000 Pa with suction monitoring
  • Four-side edge sensors and a four-side brush ring for the corners
  • Five modes, app control, over-the-air updates, 25 to 30 minutes of backup
  • Rated for tile, marble and wood as well as glass; 70 dB

Cons

  • One-year warranty, six months on the battery
  • No weight, rope rating, cable length, speed or maximum pane printed
  • No voice prompts and no resume or return to start claimed
  • No shop found in Poland, Germany or the US yet, and no photograph here

Best for

  • Large panes and shop fronts, where the tank and the squeegee pay off
  • Tiled and marble walls as well as windows

Not recommended for

  • Buyers who want a long warranty
  • Anyone who needs to buy it this season in Europe or the US

Score breakdown

Cleaning
87 /100
Adhesion
100 /100
Coverage
76 /100
Safety
69 /100
Navigation
40 /100
Ease of Use
54 /100
Reliability
44 /100
Value
58 /100
How we score →

In detail

Cleaning

It sprays water from a 215 ml tank and cleans about 35 m² per fill. It has 5 cleaning modes. It reaches into corners.

Grip and fit

Suction of 8,000 Pa keeps it on the glass, with pressure compensation. It detects the pane edge, so frameless glass is fine. It also works on other smooth surfaces.

Safety

After a power cut it holds on for 25 minutes. A safety rope is included.

Navigation and control

It plans its path. It comes with a remote.

Specifications

Cleaning

Spray system
Yes
Water tank
215 ml
Glass per fill
35 m²
Cleaning speed
Not published
Cleaning modes
5
Corner cleaning
Yes
Squeegee
FlexSqueegee, adaptive, after the spray and the wipe
Spray nozzles
4, two each side, atomised
Modes
Fast, deep, edge, spot and manual

Adhesion

Suction
8,000 Pa
Pressure compensation
Yes

Fit

Largest pane
Not published
Smallest pane
60 × 60 cm
Edge detection
Yes
Other surfaces
Yes
Minimum glass thickness
3 mm

Safety

Power-cut backup
25 min
Safety rope
Yes
Rope rating
Not published
Fault self-check
No
Backup battery
650 mAh, 25 to 30 minutes of holding
Safety rope
Combined with the power cable, no length or rating printed

Navigation

Path planning
Yes
Resumes after interruption
No
Returns to start
No
Steers round obstacles
No

Control

Remote control
Yes
Voice prompts
No
Cable reach
Not published
Cordless
No
Firmware updates
Over the air, from the app

Power

Battery
Not published
Runtime
Not published
Charging time
Not published

Connectivity

Wi-Fi
Yes
Bluetooth
No
4G / LTE
No

Physical

Weight
Not published
L × W × H
270 × 270 × 69 mm
Noise
70 dB

Support

Warranty
12 months
Released
Not published
Battery warranty
6 months

Mamibot product page, category page and warranty page, retrieved 2026-10-01

Where to buy

Amazon.com
Opens Amazon's search for this model; price and stock are shown there.
Check price on Amazon.com
Manufacturer's store
Check price

Prices are read every night from the manufacturers' shops that list the machine, and shown as read. A price no read has confirmed for several days is marked with the day it was last seen. Where a week or more of readings exists, the lowest we recorded in the last 30 days is stated as well. RoboVerdict may earn a commission when you buy through links on our site. This does not affect our rankings. As an Amazon Associate I earn from qualifying purchases.

Top picks

  • Ecovacs

    WINBOT mini 2

    The slim Winbot for narrow panes from 25 × 25 cm: 8,000 Pa, felt brushes at all four corners, ultrasonic mist from a 50 ml tank for 30 m², WIN-SLAM 4.0 and 30 minutes of grip after a power cut.

  • MOVA

    N1

    MOVA's light 8,000 Pa window robot: sprays from a 120 ml tank for 32 m², plans a Z or N route, talks you through the job in 15 languages and holds on for 30 minutes after a power cut.

  • Ecovacs

    WINBOT W3 OMNI

    Ecovacs' 2026 flagship: 10,000 Pa, a TruEdge corner scrubber, six nozzles on an 80 ml tank for 50 m², 16 cm/s, and a 10 kg station that washes the pads itself and runs 130 minutes off the mains.