The Hutt C65 window cleaning robot has a battery life of around 20 minutes. Whether it can clean a 9 m² window in this time depends on the cleaning performance and the cleaning mode.

The robot has an 80 ml water tank and sprays about 1 ml of water every 5 seconds, which supports efficient cleaning. It operates with a suction power of up to 3800 Pa and automatically adjusts the suction power to the degree of soiling. Cleaning takes place in an intelligent Z-shaped path that ensures systematic surface cleaning.

As the exact cleaning time per square metre is not explicitly stated, it is not possible to say with absolute certainty whether the 20 minutes run time is sufficient for 9 m². However, the robot is designed for domestic use and window areas of this size, so cleaning 9 m² in 20 minutes seems possible in principle, especially if the window is not very dirty.

To summarise: The Hutt C65 can probably clean a 9 m² window in 20 minutes, provided the soiling is not extremely heavy and the cleaning mode is utilised optimally.