Xiaomi chargers are known for their reliability, but even they eventually fail: they stop keeping contact, warm up or do not give signs of life, POCO Or the flagship Mi series stopped working, do not rush to throw it away — in 60% of cases, the problem is solved by cleaning contacts or replacing capacitors. You can disassemble Xiaomi charging yourself, but you need to know its internal device and observe precautions.
In this article you will find step-by-step instructions for disassembling chargers of different types: from compact blocks to small ones. 5V/1And before the powerful adapters Fast Charge 3.0 (before 30We'll figure out what tools you need, how to avoid damage to the board, and what to do if the charging doesn't work after dismantling, and you'll also learn which Xiaomi models are the easiest to understand and which ones are best trusted by professionals.
⚠️ Important: Disassembling the charger takes away your warranty (if it's still valid) and can lead to electric shock. If you're unsure of your skills, contact the service center. This is a guide for experienced users or those who are willing to take risks to save money.
1.What Xiaomi charges can be disassembled independently?
Not all Xiaomi power supplies are disassemblable at home.The easiest way to work with old-style chargers (until 2018), where the body is not so firmly glued and the board is not flooded with compounds. 30W Redmi Note 10 Pros often have a non-removable case with a sealed casting, making them almost impossible to repair without special equipment.
Here is a list of models that can be disassembled with minimal risk:
- 🔌 Xiaomi Mi Power Bank 10000mAh (first-time)
- 🔌 Redmi 5V/2A (standard charging for budget smartphones)
- 🔌 Mi 18W Fast Charge (black block with a black block) USB-C)
- 🔌 POCO X3 NFC (33W, folding-case)
The hardest part is:
- ⚡ Xiaomi Mi Charge Turbo 30W/50W (compounded)
- ⚡ Redmi Note 11 Pro+ (120W, piece-case)
- ⚡ Mi 11 Ultra (67W, sealed)
If your model doesn't make the top list, it doesn't mean it can't be disassembled, it's just going to be more time-consuming. For example, USB-Type C charging often has additional locks and blocks for the locks. POCO may require heating of the body to separate the halves.
2. Disassembly tools: what will be needed?
To properly disassemble the Xiaomi charger, you need a minimal set of tools, and without them, you risk damaging the case or board, leading to the device’s final breakdown.
- 🔧 Plastic mediator (or guitar mediator) – to separate the glued parts of the body.
- 🔧 Thin screwdriver (cross or flat, depending on the screws).
- 🔧 Tweezers – to extract small details.
- 🔧 Hair dryer or thermal air station - for heating the glue (if the body does not respond to the adhesive).
- 🔧 Multimeter – to check the voltage after disassembly.
- 🔧 Isopropyl alcohol - for cleaning contacts.
- 🔧 Silicone mat – so as not to scratch the table and not lose screws.
If you plan to solder (for example, replace capacitors), additionally prepare:
- 🔥 Solding iron (power 30-40W).
- 🔥 Solder and flux.
- 🔥 Seed-removal overcloth.
☑️ Preparation for disassembly
⚠️ Warning: Never use metal tools to detach the body - they can close contacts on the board. Also avoid excessive heating: if the body does not respond at 60-70°C, it is better to stop and consult a specialist.
3. Step-by-step instruction: how to disassemble Xiaomi charging
The disassembly process varies by model, but the overall scheme is the same for most power supplies. We'll look at the universal method using the example of standard Redmi charging. 5V/2A.
Step 1: Disconnect the plug from the body
Most Xiaomi chargers have a removable fork. Carefully pull it aside while holding the body with the other hand. If the fork doesn't lend itself, try wiggling it slightly from side to side. In some models (e.g. Mi). 18W) the fork is fixed with a latch - it must be squeezed with a thin screwdriver.
Step 2: Separate the body
The charging case is glued around the perimeter, insert a plastic mediator into the gap between the halves and carefully guide them around, gradually dissociating the parts. If the glue is too strong, heat the body with a hairdryer (not higher than 70).°C!) for 1-2 minutes.
Important: Don’t put too much effort into it – there may be thin wires inside that are easy to tear off.
Step 3: Recover the fee
Once you've detached the case, you'll see a board attached to screws or clips, carefully unscrew the screws (if you have any) and remove the board by holding it around the edges, and don't touch the board elements with your hands, because static electricity can damage them.
In some models (for example, POCO X3) The board can be filled with a compound, and in this case, disassembly is pointless, and repair is possible only by replacing components on top of the pouring.
Step 4: Check the damage charge
Use a magnifying glass or a macro lens on your smartphone to view the board.
- 🔍 Bloated capacitors (frequent cause of malfunction).
- 🔍 Burned resistors or diodes.
- 🔍 Oxidized contacts (especially around the USB-port).
- 🔍 Track breaks.
If you find damage, you can try to fix it with a soldering iron, and if the board is visually intact, the problem may be the controller chip, which requires professional skills to replace.
What to do if the payment is flooded with compound?
4.Typical malfunctions and how to fix them
Most of the faults in Xiaomi chargers are related to overheating, short circuits or wear of components, and here are the most common problems and ways to solve them:
| Malfunction | Reason. | Decision |
|---|---|---|
| Charging doesn't show signs of life. | Chain break, fuse burnt out | Call the chain with a multimeter, replace the fuse |
| Charging warms, but does not charge | Bloated capacitors, faulty controller | Replace the capacitors, check the chip |
| The charger only works in a certain position. | Bad contact in USB-port | Clean the contacts with alcohol, bend the legs of the connector |
| Charging gives you a reduced voltage | Faulty transformer or diode bridge | Replace damaged elements |
If the charging beeps or sparkles when you connect to the network, immediately turn it off, which is a sign of a short circuit that can lead to fire.
⚠️ Note: If you replace capacitors, use elements with the same capacity and voltage, and installing capacitors with less voltage will cause them to bloat and break again.
5. How do you get the charge back?
Building a Xiaomi charger after repair requires care. Follow these steps:
- Make sure all components are in place and there are no unnecessary parts.
- Carefully put the fee in the case, avoiding distortions.
- Then, turn the slacks or pull them down.
- Put the halves of the body together and tightly squeeze them.
- If the body is not holding, use heat glue (not superglue!).
After assembly, check charging with a multimeter:
- 📊 Measure the voltage at the output (should correspond to the nominal value: 5V, 9V, 12V, etc.).
- 📊 Check the resistance between + (It must be infinite, otherwise there is a closure).
If the charging doesn’t work after assembly, disassemble it again and check:
- 🔌 Correctness of wire connection.
- 🔌 Lack of circuits on the board.
- 🔌 Integrity of tracks (you may have damaged them in disassembly).
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If the housing is weak after assembly, wrap the charging with a tape during testing, this will prevent the halves from being separated when heated.
6. When is repair pointless?
Not all Xiaomi charger breakdowns can be fixed at home, here are the times when it’s best to buy a new charger:
- ❌ The fee is flooded with a compound (repair is possible only in the service center).
- ❌ The controller chip burned (requires flashing or replacement of the chip).
- ❌ The body is deformed or melted (risk of short circuit).
- ❌ Charging sparkles or smokes when connected.
The cost of the original charging Xiaomi starts from 300–500 RUB (for standard models) 5V/2Powerful Fast Charge units (18V–30B are more expensive — 800–1500 If repairs require the purchase of parts (capacitors, resistors) or special equipment, they may cost more than a new charge.
⚠️ Warning: Using non-original chargers can cause your smartphone battery to overheat or even catch fire.If you decide to buy a replacement, choose certified Mi or Redmi power supplies.
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If Xiaomi’s charging has been in operation for more than 2-3 years, repairing it is often economically inefficient, and modern power supplies are designed for a limited lifespan, and their components wear out even when properly operated.
7. Tips for extending the life of Xiaomi charging
To keep your charger lasting longer, follow these guidelines:
- 🔋 Do not leave charging on the network without a connected device.
- 🔋 Avoid overheating – do not cover the charge while working.
- 🔋 Do not use low quality extension cords.
- 🔋 Clean regularly USB-dust-port.
- 🔋 Do not pull the cable when removing the plug.
If you travel frequently, buy a charging case to protect the case from mechanical damage, and avoid using the charger in high humidity conditions (such as in the bathroom).
For powerful Fast Charge units (30W and above), it is recommended to use original cables - cheap analogues can not withstand high current and melt.