Ouyniei Xiaomi E10 E12 B112 2-in-1 Water Tank & Dust Box

Ouyniei 2-in-1 Water Tank and Dust Box for Xiaomi Mijia E10, E12, and B112 Robot Vacuums

Robot vacuums have transformed household cleaning routines, and Xiaomi's Mijia lineup — including the popular E10, E12, and B112 models — represents some of the most capable autonomous cleaning platforms available. Like any precision appliance, these robots perform at their best only when their consumable components are fresh and functioning correctly. The Ouyniei 2-in-1 Water Tank and Dust Box replacement part is engineered to restore your robot's sweeping and mopping capabilities to factory-fresh condition in a single, convenient swap.

Dual-Function Design: Sweeping and Mopping in One Unit

One of the defining advantages of this replacement component is its integrated 2-in-1 construction. The water tank and dust collection box are combined into a single unit, mirroring the original design of the Xiaomi Mijia E10, E12, and B112 robots. This means your robot can sweep dry debris while simultaneously mopping hard floors — all without any additional hardware modifications. The dual-function approach is exactly what makes these Xiaomi models so popular for mixed-floor homes, and this replacement part preserves that capability without compromise.

Large-Capacity Water Reservoir

One of the most appreciated upgrades in this replacement component is the generously sized water tank. A larger reservoir means your robot can mop for longer stretches without needing a mid-clean refill. For larger homes or open-plan layouts, this translates directly into fewer interruptions and a more thorough, complete mopping pass. The water feeds consistently to the mopping pad, ensuring even dampness across the floor surface rather than the uneven results that can occur when a smaller tank runs low.

Detachable and Easy to Refill

Daily usability is where this replacement tank shines. The water tank is fully detachable from the dust box assembly, allowing you to carry just the tank to the sink for refilling without disturbing the rest of the unit. The opening is sized for easy filling without spilling, and the entire process takes only a few seconds. After mopping sessions, the tank can be emptied and dried just as easily, preventing the buildup of stale water, mold, or mineral deposits that can affect both the tank's longevity and the freshness of your floors.

Leak-Proof Sealing Structure

Water and electronics are a notoriously bad combination, which is why the sealing engineering of this replacement tank deserves special mention. The tank employs a leak-proof sealing structure that prevents water from escaping during the robot's movements — including the turns, bumps, and directional changes that are part of every cleaning cycle. Whether the robot is navigating furniture legs, transitioning from carpet to hard floors, or returning to its dock, the seal holds firm. This protection is not just about keeping your floors dry; it safeguards the robot's internal electronics from moisture damage, extending the overall lifespan of your machine.

Integrated HEPA Filtration

Beyond the water tank functionality, this replacement component also includes the HEPA filter element integrated into the dust box section. The HEPA filter captures fine particles — including dust mite allergens, pet dander, and pollen — that would otherwise be exhausted back into the room during the robot's operation. A fresh filter maintains strong suction by keeping the airflow pathway clear, and it contributes meaningfully to the indoor air quality of your home. Replacing a clogged filter is one of the highest-impact maintenance actions you can take for any vacuum, robot or otherwise.

Broad Floor Compatibility

This replacement unit supports both clean water mopping and standard dry sweeping, making it suitable for virtually all common floor types. Hardwood, tile, laminate, and low-pile areas all benefit from the combination of suction-based debris collection and controlled water mopping. The consistent water distribution prevents over-saturating any single area while still delivering enough moisture to loosen light grime and leave floors with a clean, streak-free finish.

Simple Installation, No Tools Required

Replacing the water tank and dust box on Xiaomi Mijia robot vacuums is a straightforward process that requires no tools and no technical expertise. The unit slides and clicks into the designated compartment following the same mechanism as the original component. Once seated, it is immediately ready for use. The entire replacement procedure can typically be completed in under a minute, making it a zero-friction maintenance task that fits into any schedule.

If your Xiaomi Mijia E10, E12, or B112 robot vacuum has been showing reduced suction, inconsistent mopping results, or a dusty exhaust, this Ouyniei 2-in-1 Water Tank and Dust Box replacement is the direct solution. Restore your robot's full cleaning potential today.