The Xiaomi Robot Vacuum H40 measures 340 mm wide and 97 mm tall, weighing 3640 g, with an overall unit volume of 11213.2 cm³ and a docking station footprint of 17734.4 cm³. It operates at an audible noise level of 50 dB and is equipped with both a HEPA filter and an allergy filter, making it suited for households with air quality concerns. The dust collection station can go up to 90 days before requiring manual emptying, reducing routine maintenance considerably. On the connectivity side, it is compatible with both Google Assistant and Amazon Alexa, and it comes backed by a 2-year warranty.
The H40 comes with a broad set of navigation and automation features, including mapping and route mapping to plan efficient cleaning paths, along with support for no-go zones and virtual barriers that let users define restricted areas through the smartphone app. An obstacle sensor and anti-fall sensor work together to help the unit navigate safely, while anti-stuck technology reduces the likelihood of it becoming trapped during a session. The vacuum supports scheduled cleaning, auto docking, and self-emptying, and can be managed remotely via smartphone or a physical remote control. Carpet detection and water level adjustment are also on board, and connectivity is handled over Wi-Fi 4 (802.11n). It is worth noting that the H40 does not support mop cleaning, mop raising, or mop drying, and it does not offer voice prompts.
The H40 uses a bag-based dust collection system with a 0.35 l dustbin capacity, and it includes an indicator that alerts when the bag is full, helping to keep maintenance timely. Washable filters are included in the box, adding a degree of long-term convenience to upkeep. The unit automatically adjusts its height to adapt to different floor surfaces, though it does not feature twin side brushes or an onboard display.
The H40 delivers 10000 Pa of suction power and is capable of cleaning all floor types, covering both hard floors and carpeted surfaces without manual intervention. It offers four cleaning modes, giving users some flexibility in how each session is handled, and it also supports mopping for a more thorough clean. The unit does not include a dirt sensor or an electrostatic filtration system.
The H40 is powered by a 5200 mAh battery that supports up to 180 minutes of runtime per charge, making it capable of covering larger areas in a single session. Recharging from empty takes approximately 4 hours, and operating power consumption sits at 70W. The battery is not removable, so charging is handled through the docking station rather than by swapping cells.