The Xiaomi Smart Pet Fountain 2 MJCWYSJ03 is a rechargeable 3L water fountain designed to separate the pet’s drinking experience from the owner’s daily maintenance routine. Pets receive filtered flowing water through three selectable dispensing modes, while owners can check device status and receive water, battery and filter reminders through the Xiaomi Home app.
Its 4000mAh battery allows the fountain to operate without remaining beside a wall socket, making placement easier in bedrooms, living rooms and other suitable indoor areas. It is particularly useful for cats, small dogs and owners who want a connected alternative to a traditional water bowl.
More automated feeding, hydration and monitoring products are available in the AS2 Smart pets accessories collection.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Xiaomi |
| Product Name | Xiaomi Smart Pet Fountain 2 |
| Model Number | MJCWYSJ03 |
| Product Type | Rechargeable Smart Pet Water Fountain |
| Water Capacity | 3 Litres |
| Battery Capacity | 4000mAh Lithium Battery |
| Claimed Battery Life | Up to 100 Days Under Xiaomi Test Conditions |
| Rated Power | 10W |
| Input | 5V / 2A |
| Water Modes | Sensor, Intermittent and Continuous |
| Sensor Dispensing | Approximately 10 Seconds When a Pet Approaches |
| Filtration | Four-Stage Replaceable Filter |
| Wireless Connection | 2.4GHz Wi-Fi, IEEE 802.11b/g/n |
| Compatible Application | Xiaomi Home |
| Compatible Systems | Android 8.0 or iOS 12.0 and Above |
| Water Resistance | IPX7 with Power Port Fully Sealed |
| Low-Water Protection | Automatically Stops Below the Minimum Water Level |
| Water-Level Monitoring | Transparent Viewing Window and App Reminder |
| Operating Temperature | 5°C–40°C |
| Product Material | ABS Water Tank, Tray and Exterior Components |
| Product Dimensions | 190 × 230 × 180mm |
| Net Weight | Approximately 0.96kg |
What the Pet Experiences and What the Owner Manages
| From the Pet’s Perspective | From the Owner’s Perspective |
|---|---|
| Moving water instead of a completely still bowl | Three modes for controlling how frequently water is dispensed |
| A gently angled drinking surface | A visible water-level window for faster checking |
| Reduced operating noise during drinking | Low-water, low-battery and filter reminders through the app |
| Filtered water with fewer visible particles and odours | A removable tank with rounded internal surfaces |
| Water available during temporary power interruptions | Rechargeable operation without permanent cable placement |
| Several flow patterns for different preferences | Remote mode management through Xiaomi Home |
Choose the Water Mode by Pet Behaviour
| Water Mode | How It Operates | Recommended Situation |
|---|---|---|
| Sensor Mode | Dispenses water for approximately 10 seconds when a pet approaches | Curious pets attracted by movement and households prioritising battery life |
| Intermittent Mode | Dispenses water according to scheduled intervals | Owners who want regular circulation without continuous operation |
| Continuous Mode | Keeps water flowing continuously through the drinking area | Pets that prefer constant movement or periods of heavier shedding |
Continuous mode can help carry loose hair towards the filter, but it also uses more energy than limited dispensing. Sensor mode generally provides the longest battery performance because the fountain activates only when required.
A Seven-Day Introduction Plan for a New Fountain
Day 1: Place It Beside the Existing Bowl
Set the fountain on a stable, dry surface close to the pet’s familiar drinking area. Keep the existing water bowl available so the pet is not forced to change immediately.
Day 2: Use a Quiet Intermittent Setting
Begin with a low-disruption mode rather than continuous water flow. Allow the pet to approach, inspect and smell the fountain without being carried towards it.
Day 3: Reward Natural Investigation
Positive attention can help a cautious pet associate the fountain with a normal part of its environment. Avoid placing food directly inside or on the drinking tray.
Day 4: Test Sensor Mode
Sensor mode produces short periods of flowing water when the pet approaches. This can attract pets that show interest in taps or other moving water sources.
Day 5: Observe the Preferred Position
Check whether the pet drinks more comfortably when approaching from the front or side. Leave enough surrounding space for an unobstructed posture.
Day 6: Move the Traditional Bowl Slightly Away
When the pet is drinking confidently from the fountain, move the original bowl farther away while continuing to keep an alternative source available.
Day 7: Confirm Normal Drinking
Remove the old bowl only after the pet uses the fountain consistently. Some pets adapt immediately, while cautious animals may need a longer transition period.
Inside the Four-Stage Filter
| Filter Layer | Primary Function | Examples of What It Targets |
|---|---|---|
| High-Density Microporous PP | Captures larger visible particles | Pet hair, food fragments and surface debris |
| Activated Carbon Granules | Absorbs odours and helps reduce discolouration | Unwanted smells and taste changes |
| Mixed Ion-Exchange Resin | Reduces selected mineral ions | Calcium, magnesium and sodium ions |
| Bacteriostatic Cotton | Helps inhibit bacterial growth inside the filtered water system | Bacteria under the manufacturer’s tested conditions |
The filter improves the circulating water but does not remove the need to use safe drinking water, clean the tank or wash the drinking tray. Xiaomi recommends replacing the filter approximately once per month, with actual timing affected by water quality, pet hair and daily use.
The 3L Tank in Real Household Use
| Household Example | Manufacturer Test Assumption | Estimated Supply |
|---|---|---|
| One Adult Cat | Approximately 200ml consumed per day | Up to 15 Days |
| Two Adult Cats | Approximately 400ml combined per day | Approximately One Week |
| Small Dog | Consumption varies significantly by size and activity | Check the tank daily until normal usage is understood |
| Warm Weather or Active Pets | Potentially higher daily consumption | More frequent refilling may be required |
The 3L capacity reduces refilling frequency but should not be treated as permission to leave pets unattended for extended periods. Water levels, cleanliness and device operation should still be checked regularly.
A Maintenance Calendar That Is Easy to Follow
| Frequency | Maintenance Task |
|---|---|
| Daily | Check the water level, visible cleanliness and normal pump operation |
| Every Few Days | Top up with clean drinking water and remove visible hair from the tray |
| Weekly | Disassemble and wash the tank, tray, water pipe, pump area and pre-filter |
| Approximately Monthly | Replace the main filter or follow the Xiaomi Home reminder |
| Before Travel | Charge the battery, fill the tank, clean the system and confirm app status |
| After Long Storage | Wash all water-contact components and fully charge the device before use |
IPX7 Protection Does Not Mean Maintenance-Free
The fountain has an IPX7 rating only when the power port is fully closed with its waterproof plug. This protection makes rinsing easier, but several precautions remain important.
- Disconnect the power cable before cleaning.
- Seal the power port completely before rinsing the main unit.
- Do not connect the charging cable while the port is wet.
- Dry the fountain before reconnecting it to power.
- Do not place the power cable or adapter inside water.
- Do not use harsh detergents on water-contact surfaces.
Understanding the 100-Day Battery Claim
The fountain contains a 4000mAh rechargeable battery. Xiaomi’s 100-day result was measured with a fully charged device connected to the internet and dispensing water 24 times per day.
Actual battery performance can change according to:
- The selected water mode
- The number of daily sensor activations
- Wi-Fi signal conditions
- Battery age and charging habits
- Ambient temperature
- How frequently the pet approaches the fountain
Continuous mode will normally require more frequent charging than sensor-based operation. Battery backup also allows the fountain to continue dispensing water during temporary power interruptions.
Connected Pet Care Through Xiaomi Home
The fountain connects to a 2.4GHz Wi-Fi network and integrates with the Xiaomi Home application. It does not support a 5GHz-only network during setup.
The app can provide:
- Real-time operating status
- Low-water notifications
- Low-battery reminders
- Filter replacement reminders
- Remote water-mode selection
Xiaomi Smart Pet Fountain 2 vs Enabot EBO ROLA Fountain
| Feature | Xiaomi Smart Pet Fountain 2 | Enabot EBO ROLA Cat Water Fountain |
|---|---|---|
| Tank Capacity | 3L | Not Stated on the AS2 Product Page |
| Battery Capacity | 4000mAh | 5000mAh |
| Filtration | Four-Stage System | Three-Layer System |
| Drinking Tray | ABS | 304 Stainless Steel |
| Water Modes | Sensor, Intermittent and Continuous | Continuous and Sensing Modes Listed |
| Mobile Application | Xiaomi Home | ROLA App |
| Wi-Fi | 2.4GHz | 2.4GHz |
| Water Resistance Rating | IPX7 with Sealed Power Port | Not Stated on the AS2 Product Page |
| Low-Water Protection | Automatic Pump Stop | Water-Status Monitoring Listed |
| Best Advantage | Three modes, known 3L capacity and Xiaomi Home integration | Higher battery capacity and stainless steel tray |
Choose the Xiaomi model when you want a confirmed 3L tank, three water modes, IPX7 protection and integration with an existing Xiaomi Home setup.
Build a Connected Feeding and Hydration Station
The fountain manages water while a compatible automatic feeder can manage scheduled meals. Owners building a more complete daily-care setup can pair it with the PAWAii Smart Pet Feeder for app-controlled feeding and portion scheduling.
The fountain and feeder should remain separated by enough distance to reduce food entering the water tray. Many pets also prefer drinking water positioned away from their feeding area.
Who Should Choose This Fountain?
| A Strong Choice For | Less Suitable For |
|---|---|
| Cats attracted to moving water | Very large dogs requiring a larger drinking area |
| Owners wanting rechargeable cordless placement | Homes without a compatible 2.4GHz Wi-Fi network |
| Users already managing devices through Xiaomi Home | Owners unwilling to replace filters regularly |
| Bedrooms and quiet indoor areas | Permanent outdoor installation |
| Households needing water and maintenance reminders | Pets that strongly prefer a completely still open bowl |
| One or two-cat households | Long unattended periods without human checking |
What Is Included in the Box?
The Global package includes one Xiaomi Smart Pet Fountain 2, one filter holder, one filter, one power cable and one user manual. The European package may also include a power adapter. Regional box contents should be checked before purchase.
FAQ
1. What is the capacity of the Xiaomi Smart Pet Fountain 2?
The fountain has a 3L water tank. Xiaomi estimates this can provide approximately 15 days of water for one 5kg adult cat or about one week for two cats under its test assumptions.
2. What water modes does the fountain provide?
It includes sensor mode, intermittent mode and continuous mode. Sensor mode dispenses water for approximately 10 seconds when a pet approaches.
3. How long does the battery last?
The 4000mAh battery can last up to 100 days under Xiaomi test conditions involving 24 water-dispensing cycles per day. Actual runtime varies by mode and usage.
4. Does the fountain connect to the Xiaomi Home app?
Yes. It connects through 2.4GHz Wi-Fi and provides device status, low-water, low-battery and filter replacement reminders.
5. How often should the filter be replaced?
Xiaomi recommends replacing the filter approximately once per month. Water quality, pet hair and daily use may require earlier replacement.
6. Is the Xiaomi Smart Pet Fountain 2 waterproof?
It has an IPX7 rating when the power port is fully sealed with the waterproof plug. The charging cable and power connection must remain dry.
7. Can the fountain continue working during a power outage?
Yes. Its rechargeable battery allows water dispensing to continue during temporary power interruptions, provided sufficient battery charge remains.
8. Is the Xiaomi Smart Pet Fountain 2 suitable for dogs?
It can be suitable for small dogs that can drink comfortably from its tray. Larger dogs may require a fountain with a wider drinking area and greater capacity.