Xiaomi Microhoo MH02C Portable Wireless Air Cooler 500ml – 4000mAh Rechargeable Battery, Water Cooling & Humidifier

The Xiaomi Microhoo MH02C Portable Wireless Air Cooler is a compact personal cooling device designed for desks, bedrooms, study spaces and other small areas where localized airflow is preferred.

Featuring a 500ml water tank, built-in 4000mAh rechargeable battery and water-based evaporative cooling, the MH02C combines the functions of a personal fan, air cooler and humidifier in a compact ABS housing. It can operate wirelessly after charging, making it easier to move around without remaining connected to a wall outlet.

The device uses a nano cooling pad to absorb water and condition the passing airflow. Its stepless speed control and 360° rotary knob allow you to adjust airflow according to your preference.

The MH02C is designed for personal cooling rather than whole-room air conditioning. Its compact size makes it particularly practical for a work desk, bedside table, study area or other close-range applications.

Common Problems with Traditional Fans

A conventional fan can circulate air, but it does not actively add moisture or use water-based evaporative cooling.

Common limitations include:

• Warm air being circulated during very hot weather
• No water-based cooling function
• No humidification
• Limited portability when connected to a wall outlet
• Fixed fan-speed settings on some models
• Larger floor or desk footprint
• No rechargeable battery
• Less convenient for personal close-range cooling

For users who want a compact cooling device that can be used both with and without a direct power connection, a rechargeable water-cooled air cooler can provide additional flexibility.

Smart Personal Cooling Solution

The Xiaomi Microhoo MH02C combines three functions in one compact appliance:

• Fan – circulates air around your personal space
• Air Cooler – uses water and a cooling pad to condition the airflow
• Humidifier – adds moisture to the outgoing air

Its built-in 4000mAh battery allows wireless operation, while the USB power connection provides another way to operate or recharge the device.

Key Features

1. 500ml Water Tank

The MH02C features a 500ml water tank, providing a convenient water supply for its evaporative cooling system.

The tank is designed for easy filling, and some listings describe a magnetic water-tank cover that can be opened quickly for refilling.

2. Water-Based Evaporative Cooling

Instead of simply circulating room air, the MH02C passes airflow through a water-saturated nano cooling pad.

This water-based system can provide a cooler-feeling airflow around the user, particularly when used in suitable environmental conditions.

Important: The MH02C is a personal evaporative air cooler, not a compressor-based air conditioner. Cooling performance depends on ambient temperature, humidity, airflow and water conditions.

3. 4000mAh Rechargeable Battery

The built-in 4000mAh battery gives the MH02C wireless capability.

You can use the cooler on a desk, bedside table or other suitable location without keeping it connected to a wall outlet during operation.

Actual runtime depends on the selected airflow level and cooling function.

4. Stepless Speed Control

Unlike fans limited to a few preset speeds, the MH02C uses stepless speed adjustment.

Its 360° rotary knob allows you to gradually increase or decrease airflow to find a comfortable level.

5. Nano Cooling Pad

The built-in nano cooling pad is designed to absorb water efficiently and provide water-based cooling as air passes through it.

The cooling pad is an important part of the evaporative cooling system and should be kept clean for proper operation.

6. Brushless DC Motor

The MH02C uses a brushless DC motor, with listings describing a copper-coil motor design intended for stable and efficient operation.

Brushless motor technology can also help provide smooth operation with fewer mechanical wear components than traditional brushed motors.

7. 3-in-1 Personal Cooling

The MH02C is marketed as a multifunctional personal cooling device combining:

• Fan
• Air cooler
• Humidifier

This makes it useful when you want airflow together with water-based cooling and added humidity.

8. USB Powered

The device uses a DC 5V/2A USB input, making it compatible with suitable USB power sources such as a USB adapter, computer or power bank.

A 1.2m USB cable is listed for the MH02C by several sources.

9. Negative Ion Air Purification

Several MH02C listings describe a negative oxygen ion purification function, marketed for improving perceived air freshness and reducing smoke or airborne pollutants.

This should be understood as a product feature rather than a substitute for a certified air purifier or professional air-quality treatment system.

10. Compact ABS Housing

The MH02C uses an ABS plastic housing and a compact form factor intended for desktop and personal use.

One current listing gives dimensions of approximately 149 × 170 × 174mm and weight around 820g, while other seller listings provide package rather than product measurements.

11. Magnetic Water Tank Cover

The water tank cover is described as having a magnetic closure, allowing quick access when filling the tank.

This makes regular water refilling more convenient during everyday use.

12. Low-Power Operation

Seller specifications commonly list 10W maximum power, while some descriptions separately advertise approximately 6W operating consumption.

For product-page accuracy, the safer specification is up to 10W maximum power, with actual consumption depending on operating conditions.

Benefits

• 500ml water tank
• 4000mAh rechargeable battery
• Wireless personal cooling
• Water-based evaporative cooling
• Humidifying function
• Stepless airflow adjustment
• 360° rotary control
• Nano cooling pad
• Brushless DC motor
• Negative ion function listed by sellers
• USB 5V/2A input
• 1.2m USB cable
• Compact ABS housing
• Suitable for desk and bedside use
• Can be powered through suitable USB sources
• Low maximum power consumption compared with larger cooling appliances

Perfect For

The Xiaomi Microhoo MH02C Portable Wireless Air Cooler is suitable for:

• Office desks
• Study tables
• Bedrooms
• Bedside tables
• Dorm rooms
• Small personal spaces
• Students
• Home-office users
• Travelers
• Personal summer cooling
• Users who need portable airflow
• People looking for a rechargeable mini air cooler

Why Choose Xiaomi Microhoo MH02C?

A traditional fan provides airflow, but the Microhoo MH02C adds water-based evaporative cooling and humidification.

Its combination of a 500ml water tank, 4000mAh rechargeable battery, nano cooling pad, brushless DC motor and stepless speed control makes it convenient for localized personal cooling.

The compact design also allows it to be moved between a desk, bedside table or other suitable personal space.

Xiaomi Microhoo MH02C vs Traditional Fan

How to Use Xiaomi Microhoo MH02C

Step 1: Place the Cooler

Place the MH02C on a stable, flat and dry surface such as a desk, table or bedside cabinet.

Step 2: Open the Water Tank

Open the magnetic water-tank cover and add clean water to the tank.

Do not exceed the recommended water level.

Step 3: Prepare the Cooling Pad

Make sure the cooling pad is correctly positioned according to the product design before starting the water-cooling function.

Step 4: Charge the Battery

Connect the supplied USB cable to a suitable 5V/2A USB power source and charge the built-in battery.

Step 5: Turn On the Device

Switch on the MH02C and activate the airflow.

Step 6: Adjust the Airflow

Use the 360° rotary knob to gradually increase or decrease the fan speed.

Step 7: Activate Water Cooling

Use the water-filled cooling system when you want cooler, moisture-enriched airflow.

Step 8: Refill When Necessary

Monitor the water level and refill the tank when required.

Step 9: Clean After Use

Empty remaining water and clean the tank and cooling pad regularly, particularly before extended storage.

Use Cases

Office Desk Cooling

Place the MH02C beside your computer to provide localized airflow while working.

Bedroom & Bedside Use

Its compact form makes it suitable for placing on a bedside table for personal cooling.

Study Room

Use the adjustable airflow to create a comfortable personal cooling zone while studying or reading.

Dorm Room

The compact size and rechargeable battery make it useful where space and power outlets may be limited.

Travel

The rechargeable design allows convenient personal cooling in suitable travel environments where a USB power source is available.

Home Office

Use the water-cooling function during hot weather while keeping the device close to your workspace.

Cleaning & Maintenance

• Turn off the device before cleaning.
• Disconnect the USB power cable before maintenance.
• Empty unused water from the tank regularly.
• Clean the water tank to reduce residue buildup.
• Clean the cooling pad according to the manufacturer’s instructions.
• Keep the air inlet and outlet free from dust.
• Wipe the ABS exterior with a soft, slightly damp cloth.
• Do not pour water onto the electrical components.
• Do not immerse the main unit in water.
• Allow water-contact components to dry properly before long-term storage.
• Avoid using dirty or contaminated water.

Important Usage Tips

• Use clean water in the tank.
• Do not overfill the 500ml water tank.
• Keep the device on a stable, dry surface.
• Do not block the air inlet or outlet.
• Keep the USB charging connection away from water.
• Do not operate the device if the electrical components become wet.
• Clean the cooling pad regularly.
• Empty the tank if the cooler will remain unused for an extended period.
• Do not expect the device to cool an entire large room like a compressor-based air conditioner.
• Cooling performance depends on room humidity, ambient temperature, airflow and water temperature.
• Use a suitable 5V/2A USB power source for wired operation or charging.

Product Specifications

*Some seller descriptions advertise approximately 6W operating consumption, while other MH02C specifications list 10W maximum power. For a product listing, use 10W as the maximum unless the exact supplier variant confirms otherwise.

**Dimensions and weight vary between listings. A Xiaomi/Microhoo store listing gives approximately 149 × 170 × 174mm and 820g, while some Bangladesh listings show package dimensions/weight instead. Verify the exact imported variant before publishing these figures as fixed product dimensions.

What’s in the Box?

Typical package contents include:

• 1 × Xiaomi Microhoo MH02C Portable Air Cooler
• 1 × USB Cable
• 1 × User Manual

Package contents can vary depending on the seller or regional version.

Who Should Buy This Product?

Choose the Xiaomi Microhoo MH02C if you want:

• A compact personal air cooler
• Wireless operation with a rechargeable battery
• 500ml water capacity
• Water-based evaporative cooling
• Humidification
• Stepless airflow control
• A brushless DC motor
• USB-powered operation
• A portable desktop cooling solution
• A device for personal rather than whole-room cooling

If you need to maintain a precise temperature across a large room, this type of personal evaporative cooler is not a replacement for a conventional compressor-based air conditioner.

Why Buy from AIYOZON?

When purchasing the Xiaomi Microhoo MH02C Portable Wireless Air Cooler from AIYOZON, you can enjoy:

• Convenient online ordering
• Product-focused information
• Secure packaging
• Delivery support
• Product assistance
• Access to Xiaomi/Microhoo lifestyle appliances
• Customer support for product-related questions

Before ordering, confirm the MH02C model, battery capacity, package contents, voltage, cable type and warranty terms with the seller.

Frequently Asked Questions

What is the Xiaomi Microhoo MH02C?

The Microhoo MH02C is a compact personal water-cooled air cooler designed for localized cooling. It combines fan airflow with evaporative cooling and humidification.

How much water does the MH02C hold?

The MH02C has a 500ml water tank.

Does the MH02C have a rechargeable battery?

Yes. It is listed with a built-in 4000mAh rechargeable battery, allowing wireless operation.

Is the MH02C really wireless?

Yes. The built-in battery allows the device to operate without being continuously connected to a USB power source. It can also be connected to USB power for charging or operation.

How is the MH02C charged?

The listed input is DC 5V/2A via USB, with a USB cable supplied in typical packages.

Does it have adjustable fan speed?

Yes. The MH02C uses stepless speed adjustment, controlled through a 360° rotary knob.

Does it work without water?

The fan can provide airflow without using the evaporative cooling function, but water is required for the water-cooling/humidification function.

How quickly does it provide cooling?

Some seller descriptions claim the cooling pad can produce noticeably cooled airflow within approximately 30 seconds after being properly wetted. Actual cooling performance depends on environmental conditions and should not be interpreted as a guaranteed room-temperature reduction.

Can it cool an entire room?

No. The MH02C is designed primarily for personal or localized cooling, such as a desk, bedside table or small personal area.

Does it humidify the air?

Yes. The MH02C is commonly listed as a combination of fan, air cooler and humidifier.

What type of motor does it use?

The MH02C is listed with a brushless DC motor.

What is the maximum power consumption?

Multiple MH02C specifications list 10W maximum power. Some sellers separately advertise approximately 6W consumption during operation, so actual consumption depends on usage conditions.

Does it use a USB connection?

Yes. The listed input is DC 5V/2A, and a USB cable is supplied with typical packages.

Is the Xiaomi Microhoo MH02C an air conditioner?

No. It is a personal evaporative air cooler, not a compressor-based air conditioner. It is designed to provide localized cooled airflow rather than precise whole-room temperature control.

Final Verdict

The Xiaomi Microhoo MH02C Portable Wireless Air Cooler 500ml is a compact personal cooling solution that combines water-based evaporative cooling, fan airflow and humidification in a portable design.

With a 500ml water tank, 4000mAh rechargeable battery, stepless speed control, nano cooling pad, brushless DC motor, USB 5V/2A input and compact ABS body, it is well suited to desks, bedrooms, study areas, dorm rooms and other personal spaces.

It should be viewed as a personal cooling appliance rather than a replacement for a full-size air conditioner. For close-range cooling during hot weather, however, its rechargeable design and water-cooling function provide useful flexibility.

Ready for Personal Cooling Anywhere?

• ✔ 500ml Water Tank
• ✔ 4000mAh Rechargeable Battery
• ✔ Wireless Operation
• ✔ Water-Based Evaporative Cooling
• ✔ Fan + Air Cooler + Humidifier
• ✔ Nano Cooling Pad
• ✔ Stepless Speed Control
• ✔ 360° Rotary Knob
• ✔ Brushless DC Motor
• ✔ USB 5V/2A Input
• ✔ Compact ABS Design
• ✔ Magnetic Water Tank Cover
• ✔ Ideal for Desk, Bedroom & Personal Use

👉 Order the Xiaomi Microhoo MH02C Portable Wireless Air Cooler from AIYOZON today and enjoy convenient personal cooling with water-based airflow wherever you need it.