How to safely open the bank Xiaomi: instructions with photos and tips

Why you might need to open a Xiaomi Verbank

Xiaomi’s power banks are known for their reliability, but even they sometimes require intervention: swollen batteries, damaged connectors or the need to replace internal components.

1) Replacement of the battery – if the capacity has fallen to 30-40% from the nominal or the bank swelled (visually noticeable by the deformation of the body). 2) Repairs USB-ports that have stopped holding cable or are not transmitting current. 3) Cleaning the board from oxidation after moisture or prolonged use in dusty conditions. It is important to understand that self-opening deprives the warranty (if it is still valid), but for devices older than the one that is used in the process. 1-2 In the years ahead, it is often the only way to bring them back to life.

The manufacturer does not provide an "official" way of disassembling the body - glued or latched, and some models (for example, Mi Power Bank 3 Pro) even use screws under a special screwdriver. However, with the right tools and care, the procedure is quite feasible at home.

What tools will you need

For a careful opening of the body without damage, prepare:

• 🔧 Plastic mediators (2-3 - To separate the latches, and the thick guitar mediators will do. 0.7-1 mm.
• 🔨 Screwdriver with nozzles: cross (PH00) for most models and triving (Y0.6) Mi Power Bank 4 and Redmi 20000mAh.
• 🧲 Suction (optional) – helps lift the lid on smooth-surface models (e.g. Mi Power Bank) 3C).
• 🔥 Dryer or thermal air station - for softening the glue (only for glued housings, for example, Mi Power Bank) 2S).
• 📦 Container for screws - so as not to lose small parts (in some models, up to 8 pieces!).

⚠️ Warning: Do not use metal blades or knives, they scratch the plastic and can damage the internal components. If there are no mediators at hand, take a plastic card (bank or discount), but wrap it with tape so as not to scratch the case.

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Before disassembling, take a photo of all sides of the overbank - this will help to collect it back correctly, especially if the latches have an asymmetrical arrangement.

Step-by-step instructions: how to open the body

The process of analysis depends on the model, but the general sequence of actions is as follows:

1. Turn off the power. Make sure the power bank is discharged to 0% (the indicator does not burn), which minimizes the risk of short circuits when accidentally touching the board.
2. Find the entry point. Most Xiaomi models have a weak spot, the junction between the top and bottom of the case near the top. USB-Put the mediator in the slot and gently run along the perimeter, turning off the locks in turn.
3. Remove the lid. Once all the latches are free, raise the top of the body. In propeller models (e.g. Redmi 10000mAh), first unscrew them counterclockwise.

⚠️ Warning: If the case fails, don't use excessive force -- you've probably missed a hidden latch or screw. Stop and check the case again for mounts. Mi Power Bank 4 models often forget the screw under the technical information sticker!

Features of the analysis of popular models

Xiaomi’s superbank design has evolved, and the way it is opened is different, and the key nuances for the most common devices are as follows:

For models with triving screws (Y-slit) you can use an alternative: a smaller flat screwdriver, but you need to act extremely carefully to avoid tearing the slits. In extreme cases, the screws are drilled with a thin drill (0.8 mm), but this irreversibly spoils the body.

What to do after opening the body

When the case is open, follow the algorithm:

1. Look at the battery. If it's swelling (you can see it in a bubble on the surface), don't touch it with your bare hands, use gloves. It's a battery that needs to be recycled, not repaired.
2. Check the board. The oxidation (green or white) on the contacts is cleaned with alcohol and a cotton swab, and the damaged tracks are repaired with a soldering iron.
3. Diagnose. USB-If the connector is wobbling, it needs to be soldered or replaced. 30-40 W) and a new connector (you can buy on AliExpress on request "USB Type-C female connector").

⚠️ Warning: If you notice traces of electrolyte leakage (sticky mass or white plaque), immediately interrupt and dispose of work. Contact with the electrolyte is dangerous for the skin and respiratory tract. Use a soda solution (1 tbsp per glass of water) to neutralize the battery).

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After replacing the battery, be sure to complete 2-3 full charge/discharge cycles – this calibrates the controller and prolongs the life of the new battery.

How to get back the Verbank

Assembly is no less important than the dismantling.

• 🔌 Check all connections. Make sure the plumes and wires are connected to the board (in models with a display or fast charging, they can be up to the end of the day). 3-4 piece).
• 🧩 Line the latches. Press the body around the perimeter so that all the latches are in place.
• 🔩 Twirl the screws. Don't pull them over, easy enough. In rubber-legged models like Mi Power Bank 3, first insert the legs into the slots, then twist the screws.
• 🔋 Test the device. Connect the charger and check the indication. If the verbank doesn't turn on, disassemble it again and check the battery contacts.

If the body is playing or creaking after assembly, it means that not all latches are fixed. USB-In this case, carefully disassemble the device and repeat the assembly.

Frequent Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when parsing overbanks, and here are the most common ones:

• 🔧 Use inappropriate tools. Metal blades scratch the body and can close contacts on the board. Always use plastic mediators.
• 🔥 Overheating when softening the glue, the temperature of the hair dryer should not exceed 70°C -- otherwise the plastic will warp and the stickers will fall off. Keep the hair dryer at a distance. 10-15 centimeter.
• ⚡ Working with a charged battery, even if the indicator shows 0%, There may be a voltage in the circuits. To discharge completely, connect the verbank to the light bulb on the 5 Wh-oh. 10-15 minute.
• 🧲 Loss of screws or springs. In some models (e.g. Mi Power Bank 4), there are springs under the power button.

If after assembly the overbank does not charge or does not give current, check:

1. The polarity of the battery connection (plus to plus, minus to minus).
2. Integrity of the fuse on the board (it can burn out with a short circuit).
3. The quality of soldering USB-connectors (with poor soldering contacts can "fall off" when loaded).

FAQ: Answers to popular questions