Disassembly of Xiaomi’s Verbank: instructions for Redmi, Mi and Models POCO photo-advice

To disassemble the Xiaomi overbank may need for many reasons: from replacing the bloated battery to repair. USB-But this procedure requires care, because inside the device are lithium-ion batteries that, if mishandled, can ignite or explode. In this article, we will discuss in detail the disassembly process for popular models of Redmi Power Bank, Mi Power Bank 3 and others, specify the necessary tools and warn against typical errors.

It is important to understand that disassembling the overbank will void the Xiaomi warranty if it is still valid. In addition, after opening the case, re-sealing may be necessary - many models have adhesive joints that are difficult to restore without special materials. If your goal is simply to clean contacts or replace the cable, you may want to consider alternative ways (for example, using alcohol to clean ports without disassembly).

We'll focus on the practical side, from picking screwdrivers to testing elements after assembly, and to give you a picture of the key steps and where the pitfalls are most often hidden, and if you're new to electronics repair, we recommend that you read the safety section first.

Preparation: security tools and measures

Before you start disassembling, make sure you have everything you need. The minimum set of tools includes:

• 🔧 Plastic mediators (or guitar mediators) – for careful separation of adhesive sutures.
• ⚒️ Set of screwdrivers (cross-haul) PH00, flat 1.5 mm, torx T5 for some).
• 🔥 Thermoclee or double-sided tape - for reverse assembly (original Xiaomi adhesive rarely retains properties after opening).
• 📏 Plastic tweezers - so as not to damage plumes and small details.
• 🔋 Multimeter – to check the voltage on the battery (required if you plan to replace the battery!).

Pay special attention to security measures:

• 🚨 Work on a non-conductive surface (wooden table, rubber mat).
• 🧤 Wear rubber gloves – Lithium-ion batteries contain caustic electrolytes.
• 🔌 Turn off the verbank from charging and discharge it to 20-30% — This will reduce the risk of short circuits.
• 👓 Use safety glasses - if the battery is damaged, electrolyte spray is possible.

⚠️ Warning: If the body of the overbank is swelled or deformed, do not try to disassemble it! This is a sign of a malfunctioning battery that can ignite when mechanically exposed. In this case, the device must be disposed of in special reception points (in Russia - through the Ecotechnologies system»).

Also, prepare your workspace: remove all foreign objects, provide good lighting, and have a Class C (electrical) fire extinguisher on hand. If you're disassembling the superbank for the first time, take a picture of each step - this will help you put it back together properly.

How to determine the model of the verbank and find the scheme of disassembly

Before disassembling, you need to accurately identify the model of your superbank, and the box or bottom of the case usually indicates:

• 📌 Series title (e.g. Redmi Power Bank, Mi Power Bank Pro).
• 🔢 Capacity (10000 mAh, 20,000 mAh, etc.).
• 🔌 Maximum power of charge (18W, 22.5W, 30W).
• 📅 Year of issue (for example, Mi Power Bank 3 2021).

This data will help you find an accurate disassembly scheme, such as Redmi Power Bank 10000 mAh (model). PB100LZM) The model is different from Mi Power Bank 3 20000 mAh. PLM13ZM). Main differences:

To search for the disassembly scheme:

1. Enter the search query type: "[model] disassembly guide» + «site:youtube.com – this is how you will find video instructions.
2. Learn about thematic forums, for example, 4PDA (section “Portable equipment»).
3. Check out the iFixit database – there are schemas for some Xiaomi models.

⚠️ Warning: If you don't find a circuit for your model, don't risk disassembling the device blindly. Inside, there may be hidden latches or non-obvious mounts that are easy to break.

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Before disassembling, warm up the body with a hairdryer (temperature) 50-60°C) - this will soften the glue and make it easier to separate the halves.

Step-by-step disassembly of Xiaomi’s superbank (on the example of Redmi 10000 mAh)

The most popular model is Redmi Power Bank 10000 mAh (PB100LZM). This instruction is suitable for similar devices with one cell 18650.

Step 1: Removing plugs and screws

• Turn the overbank and find two rubber legs (usually in the corners).
• Carefully tuck them with a plastic mediator - screws are hidden under them.
• Unscrew the screws with a screwdriver. PH00 (Do not make excessive efforts – the thread is soft!).

Step 2: Separation of the body

• Insert the mediator in the gap between the halves of the body (start from the side). USB-port).
• Carefully drive the mediator around the perimeter, separating the adhesive seam, if the case does not respond, warm it up with a hair dryer.
• Avoid strong pressure near the charge indicator - there is a plume!

Step 3: Shutting off the battery

• After opening, you will see the controller board and the 18650 battery.
• Be sure to take a picture of the location of the wires before disconnecting!
• Unplug or disable the battery connector (some models use a terminal clamp).

Step 4: Removing the board and battery

• Unscrew the screws fixing the controller's fee (usually) 2-3 stuff).
• Carefully extract the fee without pulling the wires.
• The battery can be glued to — put it in a plastic tool.

If you are replacing the battery, choose an analogue with the same parameters:

• 🔋 Size: 18650 or 21700 (depending on model).
• 📊 Capacity: not lower than the original (for example, for Redmi 10000 mAh - at least 10000 mAh).
• 🔌 Maximum discharge current: not less 2C (fast-charging).

⚠️ Note: Do not use batteries from laptops or other devices – they may have a different voltage (11.1V instead 3.7V) and burn when connected!

Disassembly of Mi Power Bank 3 20000 mAh: features and difficulties

The Mi Power Bank 3 series with a capacity of 20,000 mAh has a more complex design:

• Two cells 21700 connected in parallel.
• Four screws. T5 rubber-legged.
• Additional metal screen to protect the board.

The main problem with disassembly is the risk of damage to the balancing wires that connect the cells, and if you tear them off, the superbank will stop displaying the charge level correctly.

Step-by-step:

1. Remove all 4 rubber legs (two of them can be under the skin) USB-port).
2. Twisted the screws. T5. If there is no screwdriver - you can carefully use a flat 1.5 mm, but the risk of licking the head is higher.
3. Divide the body with a mediator, starting from the side without ports (there are fewer plumes).
4. Disconnect the battery circuit socket. In this model, it's often soldered -- be ready to solder.
5. Remove the metal screen, then the controller board. Cells 21700 are usually glued to the gently tampered with.

When replacing batteries in Mi Power Bank 3, consider:

• 🔋 Cells should be the same capacity and age (it is better to buy a set).
• 🔧 Balancing wires should be soldered in the same sequence.
• 📉 After replacement, the overbank may show an incorrect percentage of charge - calibration is required (discharge to the point of departure). 0%, then charge to 100% 2-3 once).

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Mi Power Bank 3 uses a two-pronged security scheme MOSFET-When you replace the controller board, check the multimeter in vertebrae mode.

Typical breakdowns and how to fix them

Here are the most common malfunctions of Xiaomi overbanks and ways to repair them:

If the overbank does not turn on at all, check:

1. Battery voltage (should be) 3.7V–4.2V). If 0V — dead-box.
2. Integrity of the fuse on the board (often marked as F1).
3. The presence of a short circuit between + and - battery contacts.

To diagnose the controller board, you can use the test mode (if supported by the model):

1. Press the power button.


2. Connect the verbank to the charger.




3. Release the button in 5 seconds - the indicators will show the error code.

For code decoding, look for the documentation for a specific model (for example, for Mi Power Bank Pro, flashing 3 times means a battery malfunction).

Assembly and testing after repair

After eliminating the malfunction, collect the overbank in reverse sequence, taking into account the following nuances:

• 🔌 Check polarity when connecting the battery - red wire = +, black = –.
• 📏 Make sure that all the cables and wires are not clamped by the body.
• 🔧 Twisting screws without excessive effort - the thread in plastic easily breaks off.
• 🧴 Apply new glue to the edges of the body (for example, B-7000) leakproof.

Before final assembly, test the device:

1. Connect the multimeter to USB-port in voltage measurement mode. When you press the switch on, it should appear 5V.
2. Connect the load (for example, a phone) and check the recoil current (should match the declared one: 1A/2A/3A).
3. Charge the verbank and discharge it completely. 1-2 calibration.

⚠️ Warning: If after assembly the overbank warms up more than usual or shuts down after a few minutes, immediately disassemble it and check: Short circuit on the board (use a magnifying glass to inspect the tracks). Battery soldering quality (bad contact causes heating). Charge controller malfunction (can burn if the polarity is incorrect).

If everything works correctly, but the case is not well held - use bilateral tape 3M Avoid superglue, which can damage plastic in future disassemblies.

Where to buy spare parts for Xiaomi Poverbank

For repair of the superbank may need:

• 🔋 Batteries (18650 or 21700).
• 🔌 USB-Type-C or Micro-USB ports).
• 📱 Controller boards (c) BMS and MOSFET).
• 🧲 Magnets (for models with magnetic cable fixation).

Where to look for parts:

When buying batteries, pay attention to:

• 📄 Availability of a certificate (e.g, UL, CE).
• 📅 Production date (cell freshness critical for capacity).
• 🔋 Discharge current (for fast charging you need) ≥2C).

For the controller board, look for original parts labeled to match your model. For example, Mi Power Bank 3 will be fine with a charge labeled DNL-063. Chinese analogues may not support all features (for example, fast charging Quick Charge).

FAQ: Frequent questions about the dismantling of Xiaomi’s superbanks