How to Open Xiaomi Mouse: Disassembly without Damage

Xiaomi wireless mice are popular accessories because of their combination of compactness, design and long battery life. However, even the most reliable equipment requires maintenance: over time, the battery loses capacity, the buttons start to stick, and the scroll wheel creaks. In such cases, the question arises: how to open the Xiaomi mouse without breaking it?

Unlike many brands, Xiaomi doesn’t always provide an obvious way to disassemble — there are no visible screws or latches. This scares users who are afraid of damaging the case or losing the warranty. In this article, we’ll learn how to safely open a mouse for battery replacement, cleaning or minor repairs, and also talk about the nuances for different models, from Mi Mouse Lite to Mi Bluetooth Mouse 2.

Importantly, if your mouse is still warranty, disassembly can invalidate it. Otherwise, follow the instructions and don't put too much effort into it. Most Xiaomi models are assembled on clips, and you can open them without specialized tools.

Preparation for the disassembly: what will be needed

Before you start, make sure you have everything you need, some tools can be replaced with tools at hand, but it is better to use professional tools, this will reduce the risk of damage.

• 🔧 Plastic spatula (mediator, credit card or special tool for disassembling smartphones) Metal screwdrivers can leave scratches!
• 🔩 Screwdriver cross (usually) PH00 or PH0 — Some models use Torx screws. T5.
• 🧲 Magnetic substrate or container for screws – so as not to lose them.
• 📸 Smartphone to take photos of the process. This will help you get the mouse back together.
• 🧴 Isopropyl alcohol (70%+) Cotton swabs – to clean contacts and mechanisms.

If you are planning to replace the battery, buy a similar one in advance. For most Xiaomi models, lithium polymer batteries with a capacity of 300-500 mAh with a voltage of 3.7 V are suitable.

⚠️ Attention: Do not use sharp objects (knives, scissors) to disassemble! The risk of scratching the body or damaging the internal plumes is extremely high.

Step-by-step: how to open the mouse case

The disassembly process for most Xiaomi models is similar, but there are nuances. We will look at the universal method, and then specify the features for specific devices.

1. Disconnect the mouse from the device (take out the Bluetooth transmitter or disconnect wirelessly) Make sure the battery is at least 50% discharged, which will reduce the risk of short circuits in the event of accidental closure of contacts.
2. Find the latches. Look at the shell for the slits. They're usually on the sides, near the scroll wheel, or under the rubber legs. Carefully shovel the edge of the body and try to separate the halves.
3. Disconnect the clips. Move around the perimeter, alternately snapping the mounts. Don't pull too hard, because if the body doesn't respond, then there are undetected latches.
4. Remove the top cover. After disconnecting all clips, gently lift it, not forgetting about the possible plume of the scroll wheel or buttons.

If you find screws inside, unscrew them and fold them in order of extraction. Some models (such as the Mi Bluetooth Mouse 2) have hidden screws under stickers or rubber inserts.

In models with a metal scroll wheel (for example, the Mi Silent Mouse), the plume is often glued to the body. It must be carefully disconnected, not pulled by the wires!

Features of disassembling popular Xiaomi models

Despite the overall design, some Xiaomi mice have unique nuances.We put them together in a table for convenience.

For models with wireless charging (for example, Mi Mouse 2), note the induction coil — it can be glued to the body. Don't try to tear it off by force, prefer to warm up with a hair dryer (temperature not higher than 60 ° C) to soften the adhesive.

Battery Replacement: Selection and Installation

If the cause of disassembly is a bloated or incontinuous battery, it should be replaced.

1. Disconnect the old battery from the board, usually soldered or connected through a connector, the first one requires a soldering iron with a thin sting, the second one requires a gently flicked connector.
2. Compare the old and new battery. They should match in: Capacity (mAh) Voltage (B) Dimensions (length/width/thickness)

Install the new battery with polarity. If the battery is glue-based, use double-sided tape to lock.

Before assembly, check the mouse’s operation by temporarily connecting it to the board (if possible without a full assembly).

For soldering, use a low melting point solder and flux. Overheating the board can disable the chips!

⚠️ Warning: Never use batteries from other devices (such as smartphones or headphones), even if the parameters are the same.

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If the new battery is not holding a charge, check the status of the controller on the board. Often the problem lies in the charging chip, not in the battery itself.

Cleaning and repair of internal components

Since the case is open, it's worth a preventive cleaning, which will prolong the life of the mouse and improve its performance.

• 🧹 Buttons and micro-switches: remove dust and dirt with a cotton swab dipped in isopropyl alcohol. If the buttons stick, check the spring mechanisms.
• 🌀 Scrolling wheel: clean rollers and optical sensors. In models with a metal wheel (Mi Silent Mouse), lubricate the axis with silicone lubrication.
• 📡 Bluetooth module: check the antenna (thin wire coming from the board). If it is torn off, solder or fix with conductive glue.
• 🔋 Battery contacts: clean oxidized areas with a swallow or alcohol.

If the mouse double-clicks on its own, the problem may be micro-switches that can be replaced (e.g., with the Omron D2FC-F-7N), but that requires soldering skills. The alternative is to clean the contacts with alcohol.

For models with a laser sensor (such as the Mi Gaming Mouse), check the lens - it must be clean. Dust on the sensor leads to the cursor twitching.

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Regular cleaning of the internal components of the mouse every 1-2 years prevents most problems with double clicks and sticking buttons.

Making a mouse: how to avoid mistakes

Collecting a mouse back is often more difficult than disassembling.

1. Check the plumes. Make sure they're not twisted and connected properly. In scroll wheel models, the plume should lie loose, without tension.
2. If it is not glue-based, use double-sided tape or heat-glue (don't overdo it - the surplus can close contacts!).
3. Line the clips. They should enter the slots without effort. If the case does not close, check if a foreign object (such as a wire clip) has entered.
4. Turn the screws in reverse. Don't pull them over, because the plastic inserts can crack.

After assembly, check all buttons and scroll wheels. If the mouse doesn't turn on:

• Check the polarity of the battery.
• Make sure all the plumes are connected.
• Try charging your mouse – it’s possible the battery ran out during repairs.

In models with wireless charging, after assembly, you may need to calibrate the sensor, so connect your mouse over USB for 10-15 seconds, then turn it off and try charging wirelessly.

Frequent Mistakes and How to Avoid Them

Even with careful disassembly, you can make mistakes that will lead to breakdown, and here are the most common ones:

• 🔨 Using metal tools -- scratches the body and can close contacts on the board. Always use plastic blades.
• 🔥 Overheating when soldering causes the tracks to detach on the board. Use a soldering iron with a power of no more than 30 watts and work quickly.
• 🧲 Loss of screws or springs -- without them, the mouse won't work properly. Use a magnetic mat or cell container.
• 🔋 Installing a larger battery, which can cause overheating or bloating.
• 🌀 The scroll wheel plume is a common problem in careless disassembly, and if the plume is broken, it can be replaced with a similar one from another mouse.

If the mouse is not working properly after assembly (for example, the cursor moves in jerks), check:

• Sensor integrity (whether you damaged the lens while cleaning)
• Fixing the board - it should not hang out inside the case.
• Status. USB-transmitter (if the mouse is wireless) Sometimes after disassembly, re-pairing is required.

FAQ: Answers to Frequent Questions