Robot vacuum Xiaomi Roborock S8 MaxV Ultra — Combi dust system, 2.77 L total capacity, 5200 mAh battery, 180 min runtime, White

The Xiaomi Roborock S8 MaxV Ultra is a robot vacuum designed for combined vacuuming and mopping in homes and apartments. It features a Combi dust system with a total dust/waste capacity of 2.77 L, of which the robot itself holds 0.27 L. A 5200 mAh lithium‑ion battery provides extended operation time, with up to 180 minutes of runtime on a single charge. Compact dimensions (350 × 353 × 103 mm) allow the unit and its base to fit in typical living spaces while delivering automated floor care with reduced user intervention.

Advantages

The device integrates a combined dust system that separates larger debris from fine dust to increase holding capacity and reduce the frequency of emptying. Long battery life supports extended cleaning cycles and coverage of medium to large rooms without recharging. The compact footprint and low height permit access under furniture, and the design balances vacuuming and mopping tasks for mixed floor surfaces. Noise output is specified around 67 dB, which helps keep operation relatively unobtrusive during daytime use.

Suitable for

• Homes and apartments with mixed floor types (hardwood, tile, low‑pile carpet)
• Households seeking combined vacuuming and mopping in one device
• Users who prefer longer autonomous run times for larger cleaning areas
• Spaces where a compact robot can access under furniture and narrow areas

When it may not be suitable

This robot is not intended for very plush or high‑pile carpets where brush clearance and suction may be insufficient for deep cleaning. Cleaning needs that require frequent manual spot treatment for stubborn stains or thick liquid spills may still require traditional cleaning tools. Very small rooms with complex obstacles may reduce efficiency and increase cleaning time.

Key specifications

• Total dust capacity: 2.77 litres (combined system)
• Robot internal dust bin capacity: 0.27 litres
• Battery type and capacity: 5200 mAh Li‑Ion
• Maximum runtime: up to 180 minutes (single charge, depending on mode and conditions)
• Noise level: approximately 67 dB
• Dimensions: 350 × 353 × 103 mm (width × depth × height)

How to use

Place the charging and service base on a flat, unobstructed surface and position the robot on the base to ensure proper charging. Set cleaning zones and schedules via the companion app or onboard controls, choosing appropriate modes for vacuuming, mopping, or combined operation. Regularly check and empty the robot's internal bin and the base station's collection area as specified in the user manual. Replace or wash mop pads and clean filters and brushes at recommended intervals to maintain performance.

What to consider before purchase

• Floor types in your home and whether low‑pile carpets are the primary cleaning surface
• Available space for the charging/service base and clearance under furniture
• Frequency of large debris or pet hair that may require more frequent emptying
• Compatibility with your preferred smart home ecosystem and mobile app requirements

Usage recommendations

For best results, clear small objects and cables from floors before runs, schedule cleaning during daytime hours for routine maintenance, and perform periodic maintenance on brushes, filters, and mop pads. Use appropriate cleaning modes on mixed surfaces to balance suction and mopping for efficient, even cleaning.