Xiaomi Power Bank 10000 mAh Disassembly: Full Guide with Photos and Tips

Xiaomi Mi Power Bank 10000 mAh is one of the most popular portable chargers due to its combination of compactness, capacity and reliability. However, over time, even such devices fail: the battery inflates, stops working. USB-In most cases, repair is possible, but it will require careful disassembly of the device.

In this article, you will find step-by-step disassembly instructions tailored to the design of a particular model, a list of necessary tools and critical warnings to help avoid short circuits or damage to the board, and we will also look at typical faults in which disassembly is justified and when it is better to consult a specialist.

Important: the procedure requires caution - lithium-ion batteries can ignite if mishandled. If you are not sure of your skills, consider the alternatives: buying a new power bank or contacting a service center.

Preparation for disassembly: tools and security measures

Before you start, make sure you have everything you need. Xiaomi Mi Power Bank 10000 mAh (PLM03ZM, PLM04ZM and the like) are sorted out in a similar way, but can differ in the mounting of the case.

• 🔧 Plastic blade (mediator) - to disconnect the latch of the body without scratches.
• 🔨 Thin screwdriver (cross, 1.5-2 mm) - for unscrewing screws.
• 🧲 Magnetic mat or container – to avoid losing small details.
• 🔋 Multimeter – to check the voltage on the board (optional, but recommended).
• 🧤 Gloves – protection from possible cuts and contact with conductive elements.

Also prepare your workspace: a table with good lighting, no carpeting (static electricity!) and away from flammable objects. Lithium-ion batteries, when disassembled, cannot be thrown, dropped or punctured - this can lead to a fire or explosion.

⚠️ Warning: If the power bank case is swelled or deformed, don't try to disassemble it yourself! This is a sign of a battery failure that can ignite when mechanically exposed.

Step 1: Removal of the upper body cover

The Xiaomi Power Bank 10000 mAh has two halves held together by latches and sometimes screws, starting at the top (where the two are located). USB-port):

1. Place the power bank with indicators up on a flat surface. If there are stickers on the case (for example, with a serial number), gently tuck them with your nail - screws may be hiding under them.
2. Insert a plastic blade into the gap between the top and bottom of the body on the side without ports (usually there are fewer latches). Smoothly drive the blade along the seam, alternately snapping the mounts.
3. If the case does not respond, check for hidden screws under rubber legs or stickers. In some versions (for example, PLM05ZM) used screws type Torx T5.

Don't apply too much force, because the plastic is fragile, and you can break the latches. If the lid doesn't come off, try heating the body with a hairdryer (temperature no higher than 60°C) to soften the glue (if it was used).

Make sure the device is discharged (voltage <3.7V)

Prepare a plastic spatula and screwdriver

Check for hidden screws under stickers

Wear gloves to protect against cuts-->

Step 2: Disconnect the battery and control board

After removing the cover, you will see a lithium-ion battery (usually labeled 18650 or flat packet cell) and a control board with a battery. USB-The main rule here is not to touch two contacts at the same time (for example, the plus and minus of the battery) to avoid short circuit.

Carefully follow the following steps:

1. Disconnect the board plume from the battery. It's usually attached with a connector or soldered. If soldered, use a soldering iron with a thin sting (power no more than 30 watts).
2. Check the battery voltage with a multimeter. The normal value for a discharged device is 3.0-3.7V. If the voltage is below 2.5V, the battery is deeply discharged and may be defective.
3. Remove the battery by smacking it with a plastic spatula. Be careful - some Xiaomi models use double-sided tape to lock.

On the control board, look for the charge/discharge controller (usually a TP4056 chip or similar) and the protective diode. If the power bank was not charging or giving current, these elements may be the problem.

⚠️ Warning: If the board shows burn marks, melted elements or bloated capacitors, do not turn on the device! Such damage requires professional repair or a complete replacement of the board.

Step 3: Diagnostics and Battery Replacement

The battery is the most vulnerable element in the power bank, with an average lifespan of 2-3 years or 300-500 charge/discharge cycles, and if the capacity drops and the device discharges quickly, it probably needs a replacement.

How to choose a new battery:

• 🔋 Type: Original Xiaomi models use elements 18650 (for example, Samsung INR18650-35E or LG MJ1) Check the markings on the old battery.
• 📏 Sizes: For PLM03ZM fits the battery diameter of 18 mm and length of 65 mm.
• ⚡ Capacity: Optimal - 3400-3600 mAh (for two cells, the total will be obtained). ~10000 mAh).
• 🔒 Protection: Items with built-in protection board (e.g., P-marked at the end of the name) are preferred).

To replace:

1. Salt the new battery to the board, observing the polarity (red wire - plus, black - minus).
2. Stick it to double-sided tape or heat glue (don’t use superglue – it can damage the plastic!).
3. Before assembly, check the voltage at the exit USB-port multimeter (should be a 5V ± 0.2V).

💡

If after replacing the battery power bank does not turn on, check the fuse on the board (usually this is the case). SMD-near-point USB-It can be replaced with a similar one or temporarily closed with a soldering iron for the test.

Step 4: Repairs USB-port and control board

If the power bank does not charge the connected devices or does not charge itself from the network, the problem may lie in the network. USB-So let's look at the typical scenarios:

1.Not working weekend USB-port:

• Check the integrity of the port contacts (often oxidized or bent).
• Call the multimeter chain from port to controller (look for cliffs).
• If the port is mechanically damaged, replace it with a new one (you can solder from the donor board).

2. the entrance port does not work (the power bank itself does not charge):

• Check the voltage at the input of the board when connecting the charge (should be 5V).
• If there is a voltage but the charging is not going, the controller (for example, TP4056) is defective.
• Replace the controller or the entire board (the cost of a new board for Xiaomi is about 500-1000 rubles).

Use alcohol-based flux and low melting point solder to solder. Don't overheat the board - it can damage nearby elements.

Step 5: Assembly of Powerbank after Repair

The assembly takes place in reverse order, but taking into account several nuances:

1. Make sure all plumes and connectors are tightly connected. Check the polarity of the battery again!
2. Secure the board and battery so that they don't hang around inside the case. Use original mounts or heat-glue.
3. Close the body, starting from the side USB-The latches should be in place with a slight click. If the lid does not close, check if the plume or battery is disturbing.
4. Twirl the screws (if any) Don't drag them - you can rip the thread in the plastic.

After assembly:

• Connect the power bank to the charging and check the indicators.
• Connect the load (for example, a smartphone) and make sure that there is a current return.
• If the device is warmer than usual, disassemble it again and check the contacts.

⚠️ Warning: If the power bank does not turn on after assembly, do not try to charge it "through force" (for example, applying the voltage directly to the battery). This can lead to fire.

💡

The key to assembly is not to confuse the polarity of the battery and make sure that the board does not touch the metal parts of the case, which are the main reasons for short circuits after repair.

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling Xiaomi Power Bank, and here are the most common ones and ways to prevent them:

Another common problem is the loss of screws or latches during disassembly. To prevent this from happening, use a magnetic mat or a container with cells for small parts. If the screw is still lost, you can find a similar one in the radio parts store (usually screws of the type M1.4×3 mm or M1.6×4 mm).

If after repairs, the power bank is unstable (for example, it turns off when connecting the load), check:

• The quality of the battery contacts soldering.
• The integrity of the tracks on the board (sometimes they crack when overheated).
• Controller settings (some models require calibration after battery replacement).

When disassembly is inappropriate: alternatives to repair

It is not always economically or technically feasible to repair a power bank.

• 💸 The cost of repair exceeds 50% of the price of a new device, for example, replacing the control board can cost 1000-1500 rubles, while the new Xiaomi Power Bank 10000 mAh costs about 2000-2500 rubles.
• ⚡ The battery has completely degraded (capacity has fallen by more than 70%), and the new element is almost like a power bank.
• 🔥 The control boards have burned (visible burn marks, melted elements), in which case there is a high risk of re-incapacity.
• 🛠️ No experience in soldering or electronics, repair errors can lead to short circuits or fires.

If you are considering buying a new power bank, look for models with overheating protection and fast charging (e.g. Xiaomi Mi Power Bank 3 Pro or Baseus Power Bank, CE ROHS).

If you still want to repair the old power bank, but are not confident in their abilities, contact the service center. The average cost of diagnosis is 300-500 rubles, and repairs will cost 800-1500 rubles depending on the malfunction.

💡

Before buying a new power bank, check the real capacity of the old one with the help of USB-Often, the drop in capacity only seems critical, and after the battery is replaced, the device will last for several more years.

FAQ: Frequent questions about Xiaomi Power Bank 10000 mAh