How to open the mouse Xiaomi: instructions with photos, schemes and life hacks

Xiaomi wireless mice are some of the most popular accessories for PCs and laptops due to a combination of price, design and functionality. However, sooner or later, the question arises: how to open the device case? The reasons can vary from replacing the battery to cleaning the sensor or repairing the micro-switches. In this article, we will examine all the official and informal ways of opening Xiaomi mice, including the Mi Mouse models, Mi Dual Mode Wireless Mouse, Mi Portable Mouse and others.

It's important to understand that Xiaomi's mouse design is different from traditional wired devices, because there are no visible screws, and the body is often glued together or latched, and if you do not open it properly, you can damage your plastic mounts, break your buttons, or even break your electronic components, so before you start screwdrivers, read this manual, which will help you avoid typical errors and save time.

We will also look at the unique features of the case attachment in the mouse Xiaomi 2023-2026, which are often missed in the general guides on disassembling the periphery. For example, the Mi Dual Mode Wireless Mouse 2 model uses a combined locking system: part of the body is held on the latches, and part is on the hidden screws under the stickers.

Preparation for disassembly: tools and precautions

Before you start opening your Xiaomi mouse, prepare the tools you need, and without them, the process can be delayed or damaged.

• 🔧 Plastic spatula (mediator or specialized tool for disassembling gadgets) – so as not to scratch the body.
• 🔩 Cross screwdriver (usually suitable size) PH0 or PH00) — for screws, if any.
• 🧲 Magnetic substrate or bowl – so as not to lose small details.
• 📸 Smartphone with camera - for fixing the dismantling stages (useful when assembly).
• 🧴 Isopropyl alcohol (70% and above) – for cleaning contacts, if necessary.

Also note that some models (such as the Mi Portable Mouse) have hidden screws under the legs. To unscrew them, you will need a thin screwdriver or even tweezers. If you plan to clean the sensor or buttons, stock up with cotton swabs and compressed air (cylinder).

⚠️ Warning: Do not use metal blades or knives to open the case! Xiaomi mouse plastic is fragile enough to leave scratches or chips. Also avoid excessive pressure on the latches - they can break.

If you're disassembling a mouse to replace a battery, check the battery type in advance. Most Xiaomi models use:

• 🔋 AAA (For example, in Mi Wireless Mouse Lite).
• 🔋 Built-in battery (in Mi Dual Mode Wireless Mouse 2 – requires soldering iron to replace).

Ways to open the case: from simple to complex

Xiaomi's mouse design varies depending on model and year of release, and we'll break down three basic opening methods that cover 90 percent of the brand's devices. Start with the simplest and move on to the more complex ones if the previous one didn't work.

Method 1: Disassembly on latches (without screws)

This is suitable for most budget models, such as the Mi Wireless Mouse Lite or Mi Bluetooth Mouse, where the case is held exclusively on plastic latches, and no tools are required to open (except for a shoulder blade).

Carefully put the spatula of the seam between the upper and lower part of the body on the side (from the wheel side)

Swipe the shoulder blade around the perimeter, gradually snapping the fasteners.

Do not force - if the body does not respond, check for hidden screws

Remove the top cover by holding the buttons (they may fall out)-->

Xiaomi's latched mice are characterized by an asymmetrical arrangement of the mounts. Usually the first latch is the cerca of the scroll wheel, and the rest are on the sides. If you hear the characteristic click, but the body doesn't open, don't pull it by force. There's probably an unlatched part left.

⚠️ Attention: In the Mi Bluetooth Mouse, there is a thin plume under the scroll wheel that connects the top panel to the board. When disassembling, don't pull the lid upwards - first lift it at an angle of 30-45 degrees so as not to break the plume.

Method 2: Screws under stickers and legs

More expensive models, such as the Mi Dual Mode Wireless Mouse or Mi Gaming Mouse, often have hidden screws.

• 🏷️ Under the warranty sticker (on the bottom of the case).
• 👣 Under rubber legs (they can be gently scapulaed).
• 🔍 In sensor holes (e.g., in an optical sensor).

Algorithm of action:

1. Remove all stickers and legs (use a plastic shoulder blade or tweezers).
2. Unscrew the screws (usually 2-4 pieces).
3. Carefully disconnect the body with a spatula, starting at the back (where the sensor is located).

In the Mi Dual Mode Wireless Mouse 2, one of the screws can be hidden under a decorative insert near the wheel. To remove it, pull it up with a little effort — it is held on two plastic latches.

Method 3: Adhesive housing (for new models)

In recent Xiaomi mouse versions (such as Mi Portable Mouse 2026), the manufacturer has started using adhesive joints instead of latches, which makes disassembly more difficult, but makes the case more sealed.

• 🔥 Fryer (to heat glue).
• 🧊 Plastic card (instead of a shoulder blade).
• 🧴 Acetone or alcohol (to remove glue residues).

Procedure:

1. Heat the body seam dryer for 1-2 minutes (temperature) ~60°C).
2. Carefully tuck the case with a plastic card, starting from the corner.
3. Continue heating and separating the parts until the body disperses.
4. Remove the glue residues with alcohol or acetone.

⚠️ Warning: When heated, do not point the hair dryer at the optical sensor or battery - this can cause them to fail. Also avoid overheating plastic (temperatures above 80)°C deforms the body).

Disassembly of popular models: step-by-step instructions with photos

Each Xiaomi mouse model has its own design features, and below we will provide detailed instructions for the most common devices, including photos of key stages (description of visual landmarks).

Mi Wireless Mouse Lite (model) MDZ-30-DA)

This mouse is one of the easiest to disassemble, it's held on 4 plastic latches (two on the sides and two on the front). No screws.

Procedure:

1. Place the mouse on a flat surface with the wheel up.
2. Insert a plastic blade into the seam between the upper and lower part of the body from the right button side.
3. Press carefully until you hear the first snap.
4. Swipe the blade along the body, snapping the rest of the mounts.
5. Remove the top cover by holding the buttons (they are attached to the board on the plumes).

Inside you'll see:

• 🖱️ Optical sensor (can be cleaned with a cotton swab).
• 🔋 Battery bay. AAA.
• 📶 Bluetooth antenna (thin wire along the board).

💡

If after disassembling the buttons of the mouse began to "stick", lubricate their mechanism with silicone lubrication (for example, WD-40 Specialist Silicone: Don't use hydrocarbon-based oils, they corrode plastic.

Mi Dual Mode Wireless Mouse 2 (Model) MDZ-45-DA)

This model is more difficult to disassemble due to the combined mounting system: 2 screws + 6 latches, screws hidden under the legs and decorative insert.

Instructions:

1. Remove all the rubber legs (there are 4 of them) and two of them have screws under them.
2. Put a decorative insert near the wheel and remove it (there is a third screw hidden).
3. Unscrew all screws (use a screwdriver). PH0).
4. Insert the shoulder blade into the seam from the left button and gently disconnect the body.

Features of the model:

• 🔄 Double mode (Bluetooth) + USB-receiver) implemented on separate boards.
• 🔋 Built-in battery for 500 mAh (soldiered to the board).
• 🎛️ Regulated DPI (switcher).

⚠️ Warning: When disassembling the Mi Dual Mode Wireless Mouse 2, don't pull the plume connecting the top panel to the board. It's very fragile and can break away from soldered contacts. If that happens, you'll need a soldering iron to repair it.

Mi Portable Mouse (Model) MDZ-28-DA)

This compact mouse has a folding design, which makes it difficult to disassemble. The body is held on 3 screws (two under the legs, one under the sticker) and 4 latches.

Algorithm:

1. Fold the mouse (transfer to the "transport" position).
2. Remove the sticker on the bottom - there is a screw hidden under it.
3. Untwisted all screws (including those under the legs).
4. Disconnect the body, starting at the back (where located) USB-receiver).

Inside you'll find:

• 🔋 Battery for 300 mAh (soldered to the board).
• 🖱️ Mini-USB charging port (often polluted by dust).
• 📶 2.4 GHz antenna (for wireless connection).

💡

In the Mi Portable Mouse, the folding mechanism is attached to the board by separate wires. When disassembling, do not pull on the top of the body - first disconnect the train of the mechanism.

Cleaning and repair after opening: what can be done on your own

When the Xiaomifinally mouse case is open, you have the option not only to replace the battery, but also to do a preventive cleaning or a little repair.

1. Cleaning of the optical sensor and buttons

Contamination of the sensor or button mechanism is the main cause of mouse bugs: jumping cursors, double clicks or sticking buttons.

• 🧹 Cotton swabs (dry or soaked with alcohol).
• 💨 Compressed air canister.
• 🔍 Lupa (for inspection of small details).

Cleaning procedure:

1. Remove dust from the board and sensor with compressed air (hold the balloon vertically!).
2. Wipe the sensor lens with a cotton swab soaked in isopropyl alcohol.
3. Clean the button mechanism of dirt (use a toothpick or tweezers).
4. Check the spring contacts under the buttons – they should be clean and even.

If the mouse buttons are double (register two clicks instead of one), the problem may be the oxidation of the contacts on the board.

1. Wet the cotton swab in the alcohol.
2. Gently wipe the contact areas under the buttons.
3. Let the board dry for 10-15 minutes before assembly.

Replacement of battery or battery

Xiaomi’s mice use two types of power:

If you are considering replacing the built-in battery, consider:

• 🔥 Use a soldering iron with a power of no more than 30 W so as not to damage the board.
• 🔋 The new battery should have the same size and capacity.
• ⚡ Before soldering, disconnect the plumes from the board to avoid short circuits.

Repair of micro-switches (buttons)

If the mouse buttons stop working or require a strong press, the problem may be the wear of the micro-switches (aka "micros"). Xiaomi mice usually use Kailh or Omron series mikriks.

How to replace the microswitch:

1. Buy new mikriks (e.g. Omron) D2FC-F-7N left-button).
2. Doil out old mikriks soldering iron (carefully so as not to damage the tracks on the board).
3. Install new mikrics while observing polarity (usually marked by a dot on the body).
4. Check the operation of the buttons until the full assembly of the case.

Micro-switches cost between 50 and 200 rubles apiece, and can be ordered on AliExpress or bought at radio parts stores.

💡

Before soldering new micro-switches, apply flux to the contacts (for example, RMA-223). This will improve the quality of soldering and protect against oxidation.

Building a mouse after disassembly: how to avoid mistakes

Making Xiaomi mouse after disassembly is often more difficult than disassembling, and the main problem is the correct location of the plumes and latches, and if you miss even one step, the mouse may not work or creak when you press the buttons.

Pre-assembly check

Before you connect the parts of the body, perform the following actions:

Make sure all the plumes are connected to the board (especially the button and sensor plume)

Check that the buttons are in their places.

Clean the case of dust and glue residue (if the method with heating was used)

Make sure the battery (or battery) is installed correctly.-->

Pay special attention to the plume of the scroll wheel. In Mi Dual Mode Wireless Mouse models, it often falls out of the connector on the board. If the wheel does not work after assembly, take the mouse apart again and check this plume.

Assembly sequence

Collect the mouse in reverse order:

1. Place the charge on the bottom of the case.
2. Connect all the plumes (sensor, buttons, wheels).
3. Install the upper part of the case, starting from the front (where the buttons are located).
4. Click the body, evenly pressing the perimeter.
5. Then, put the slacks on (if they were).
6. Put the legs and stickers in.

After assembly, check:

• 🖱️ Sensor performance (the cursor must move smoothly).
• 🖲️ The operation of the buttons (left, right, wheel).
• 🔋 Charging (if the mouse with the battery).
• 📶 Connection (Bluetooth and/or) USB-receiver).

⚠️ Warning: If the mouse is not turned on after assembly, check: Battery polarity (if removable); Power plume connection to board; Battery contacts integrity (if built-in). If the problem is not solved, take the mouse apart again and examine the fee for damaged tracks or soldered items.

Frequent problems after disassembly and their solution

Even if you followed the instructions, after disassembling the Xiaomi mouse, you may have problems. Let's look at the most common ones and how to fix them.

1.The mouse doesn't turn on

Causes and solutions:

2. buttons do not work or double

If the buttons are not working correctly:

• 🔧 Check the integrity of the micro-switches (they may have broken during disassembly).
• 🧹 Clean the contact areas on the board with alcohol.
• 🔄 Make sure the buttons’ spring contacts are flat and not bent.

If the button doubles (registers two clicks), try:

1. Clean the contacts of the microswitch with alcohol.
2. Bending the spring-loaded button contact (carefully so as not to break).
3. Replace the micro-switch with a new one.

3.The cursor jumps or moves in jerks

Sensor problems are usually related to:

• 🖱️ Contamination of the lens (wipe with a cotton swab).
• 📶 Interference from wireless connection (try reconnecting the mouse).
• 🔧 Damage to the sensor plume (check when disassembling).

If the cleaning didn't work, the sensor might fail, so it's easier to buy a new mouse, and it's more expensive to repair.

4. the mouse is not connected via Bluetooth or USB

Connection problems are solved as follows:

• 🔄 Reboot the mouse (take out and insert the battery).
• 📱 Remove the mouse from the list of devices on the PC and connect again.
• 🔧 Check it out. USB-receiver (if used) - it could break.
• 🔋 Make sure the mouse is charged (the indicator should flash when connected).

If Xiaomi’s mouse is not detected by the computer even after all the manipulations, the problem may be the firmware, in which case only contacting the service center will help.

FAQ: Answers to Frequent Questions