Comparison Cobbo E6 Slim vs Cobbo i5

Power consumption characterizes the load on the motor, suction fan, drives, and electronics, but it does not directly measure cleaning quality. It is more appropriate to compare this value within the same type of equipment: a more powerful device may provide greater operating headroom, but streaks and residual water are influenced more by the nozzle design, the condition of the cloths, and the movement algorithm. For corded models, this value also helps assess the requirements for the adapter or external power source.

Suction power determines how securely the window-cleaning robot adheres to the glass. A higher value helps maintain adhesion when moving over joints, minor unevenness, or areas where the cleaning pad does not fit tightly. However, stronger suction does not guarantee better removal of stains and streaks—the result also depends on the cleaning pads, liquid dispensing, and route. Regardless of the specified pressure, the robot should be secured with a safety cable.

The backup power system uses a built-in battery to keep the window-cleaning robot attached to the glass in an emergency after the mains power goes out. It does not allow full cleaning to continue, but keeps the device attached to the glass and gives you time to remove it in the event of a sudden power outage or accidental cable disconnection. The specified time indicates how many minutes the system can maintain the robot’s adhesion to the glass without mains power.

— Additional nozzle. The second, narrower suction nozzle is designed for tight areas where using the main working edge is inconvenient. It makes it easier to clean small window sashes, sectional frames, and narrow mirrors.

— Sprayer. A hand sprayer with a reservoir for water or cleaning solution that evenly wets the glass with fine droplets. It helps soften dried-on dirt and prepare the surface for wiping and subsequent collection of the liquid by the window vacuum.

— Extension pole. A telescopic or sectional handle that increases the operating range of the window vacuum or the device used to apply cleaning solution. It allows you to clean the upper areas of tall windows, glass partitions, and other hard-to-reach surfaces from the floor, without a stepladder.

— Remote control. Allows you to start, stop, and direct the window-cleaning robot without a smartphone. The set of commands varies by model, but a separate remote is convenient for quick local control and does not depend on mobile app compatibility.