Xiaomi’s external batteries are well-deservedly among the most reliable on the market, but even they have malfunctions, such as bloating batteries or failing the charge controller. Disassembly is required not only to replace the battery, but also to deep clean contacts or restore the chain after moisture. Owners often wonder how to disassemble the Mi Power Bank 10000 power bank without damaging the aluminum case and internal components.
The process of opening the sealed case requires accuracy and a specific tool, because the manufacturer does not provide maintenance to the user. Inside is a high-voltage lithium-polymer unit, which, if handled carelessly, can ignite or cause mechanical injury, which is why you need to carefully prepare and evaluate your skills with small electronics before starting work.
This article provides a detailed guide to help you safely dismantle the case, disconnect the plumes and diagnose the internal nodes. We will look at the nuances of working with adhesives, the design of the BMS board and methods for safely removing the batteries.
Necessary security tools and measures
Before you start disassembling the power of the Xiaomi 10000 bank, you should prepare a workplace with good lighting and antistatic coating. The main tool will be a thin plastic blade or mediator that will allow you to lid without leaving scratches on the metal. You will also need a set of precision screwdrivers, in particular the PH00 bit or PH000, since the screws inside the device are very small.
Pay special attention to safety, as inside the case are lithium batteries with high energy density. It is strictly forbidden to use metal objects to lash the lid next to the batteries, as this can lead to a short circuit. If you detect bloating of the battery (increase in thickness more than 10% of nominal), further disassembly is possible only with protective glasses and gloves due to the risk of electrolyte ejection.
For small details and ease of operation, prepare a magnetic mat or organizer for screws. Tweezers with curved tips will help to carefully extract plumes and lift small components without touching them with your fingers. If you plan to conduct soldering, make sure you have a flux, solder and thermophen or a soldering station with temperature adjustment.
- 🛠️ A set of precision screwdrivers with cross-type bits (PH00, PH000)
- 📱 Plastic blades (spoogers) or a mediator for opening the body
- 🔬 Tweezers with antistatic coating and curved ends
- 🧤 Safety glasses and gloves to work with damaged batteries
⚠️ Warning: Never start disassembling if the device is connected to a charger or cable USB. Residual voltage on the board can lead to short circuit in case of accidental contact of tools with live-carrying docks.
Design analysis and types of housing attachment
The Xiaomi Mi Power Bank 10000 range of external batteries is multi-generational, and the design of their housings can be significantly different. Early versions, such as the Mi Power Bank 2C or Pro, often had a screw connection hidden under a decorative lining or rubber leg. More modern versions, including the Mi Power Bank 3 and 3 Pro, use a latch and adhesive system around the perimeter, making them more difficult to disassemble.
Carefully inspect the ends of the device and the back panel for visible screws. Sometimes they can be closed with stickers with technical information or rubber plugs in ports. If there are no screws, then the case is assembled on plastic latches and adhesives that soften when heated. Understanding the type of design will allow you to choose the right opening strategy and avoid breaking plastic fixers.
The aluminum body in Xiaomi 10000mAh models performs not only a protective function, but also a heat dissipating function. Inside, there is a main control board, two or four 18650 power cells or polymer bags, and the connecting plates. All components are tightly packed, so access to them requires sequential dismantling of the layers.
The process of dismantling the outer shell
Start the disassembly process by finding the entry point. If you find the screws, gently twist them out and put them aside. If you don't have the screws, you need to carefully warm the perimeter of the device. Use a hair dryer or a building hair dryer at a minimum temperature (no higher than 80-90 degrees), evenly warming the ends for 2-3 minutes, this will soften the adhesive layer and make the plastic more elastic.
Insert a plastic blade between the top and bottom caps. Move the tool along the perimeter, trying not to dive it deep inwards so as not to damage the plumes or the battery itself. You will hear the characteristic click when the latches are released. Act slowly, sequentially snapping the locks in a circle, avoiding sharp jerks that can lead to cracks on the plastic.
Once all the latches are free, gently lift the lid. If it's still holding, check to see if the area of the USB connectors is unpatched. In some models, the board can be glued to the case, so don't pull the lid too hard. By removing the outer shell, you'll get access to the internal battery module.
☑️ Preparation for opening of the hull
Access to control board and battery
Inside the case, you'll see the main unit, which consists of the power and the controller board. Depending on the Xiaomi 10000 model, the elements can be connected by nickel plates via point welding. The control board is usually located on top or side and secured with screws or plastic locks. For full access, you may need to remove the entire block from aluminum pencil.
Notice the connection of the board to the batteries. Most of the time, these are thick nickel tires welded to the contacts of the batteries. If you want to replace the battery, you'll have to gently unseal these tires or cut them off, and then solder them, and be very careful: overheating the contact of the battery with a soldering iron can cause it to explode, so use a solder paste with a low melting point and work quickly.
The plume that connects the board to the indicators or the power button often passes under the power cells or attaches to them. Unplug the connectors by bending the locks with tweezers upwards. Don't pull the wires themselves, as they are very thin and easily break at the base. Before fully removing the board, make sure that all connections are free.
- 🔋 Carefully remove the battery pack from the aluminum case
- 🔌 Disconnect the power button and indicator plume (if any)
- 🧲 Check for additional screws holding the charge
- 🌡️ When soldering, use a low temperature and quickly remove the sting.
⚠️ Warning: Never attempt to remove the nickel plate from the battery by force, guaranteed to damage the battery housing and may cause short circuits. Use the bogs to gently snack on the plate at the contact.
Diagnosis and replacement of food items
The main reason power banks fail is degradation or bloating of lithium cells. If your device stops holding charge or turns on only on cable, most likely, a battery replacement is required. Xiaomi 10000mAh models typically use two cells with a capacity of 5000 mAh each or four 2500 mAh connected in parallel.
When replacing, it is important to choose elements with the same characteristics: the same capacity, internal resistance and, preferably, the manufacturer. Using old and new batteries in one assembly will lead to rapid failure of the entire unit. Before installing new elements, check their voltage with a multimeter; it should be in the range of 3.6-3.7 V. If the voltage is below 3.0 V, the cell can be deeply discharged and require preliminary “pumping”.
How to check the internal resistance of the battery?
The process of installing new elements requires the restoration of contact plates. If you don't have spot welding skills, you can gently solder old plates to new cans, first clean them and get in the way. Watch for polarity! The mixed plus and minus will cause the BMS controller board to burn instantly when first turned on.
Assembly of the device and check of performance
After successful replacement of components or diagnostic work, you need to assemble the device in reverse order. Make sure that all the plumes sit tightly in the connectors and the locks are snapped. Nickel plates should not touch each other or the aluminum body, so use an insulating tape or heat-resistant film to lay between the layers if necessary.
Put the assembled module back into the case. Before you snap the lid, do a primary check: connect the power bank to the network and check if the charging indicator lights up. Then plug the load (smartphone) and make sure that the charging process is underway. Only after confirming that all functions are working correctly can the lid be permanently fixed.
To fix the lid, use a thin layer of special adhesive B-7000 or T-7000, applying it with a thin strip along the perimeter. Avoid getting glue inside the case, on connectors or a button. Let the device dry for 1-2 hours under a small load to ensure uniform adhesion of surfaces.
| Work phase | The necessary tool | Implementation time | Level of difficulty |
|---|---|---|---|
| Autopsy of the hull | Fen, spatula | 10-15 minutes | Medium. |
| Dismantling fees | Screwdriver PH00, tweezers | 5-10 minutes | Low. |
| Battery replacement | Stolen iron, horn cutters | 20-30 minutes | High-pitched |
| Final assembly | Glue, load. | 15 min + drying | Low. |
💡
Use isopropyl alcohol to clean contacts and remove residues of old glue. It evaporates quickly and leaves no conductive traces, unlike water or solvents.
Typical mistakes and expert advice
One of the most common mistakes in dismantling Xiaomi Power Bank is to damage the plume of the power button. It is very thin and often glued to the battery. When the unit is not carefully removed, the battery pulls the plume behind it, causing it to break. To avoid this, preheat the place of glue of the plume and put it in a shovel.
Another mistake is the use of aggressive solvents to remove the glue from the case. Aluminum and plastic can become cloudy or change color when exposed to acetone or alcohol of high concentration, it is better to use special means to remove the glue or gently clean the residues mechanically.
Remember to calibrate the controller after the battery is replaced. Sometimes the BMS keeps showing the wrong percentage of charge because it "remembers" the parameters of the old cells. Sometimes it helps to reset the statistics with a full discharge cycle to zero and then charging to 100% without interruption.
💡
The quality of new batteries directly affects the life of a refurbished power bank. Don't skimp on batteries by buying them from trusted suppliers.
⚠️ Warning: If the device is idling after assembly (without the load attached), immediately disable it.This is a sign of a short circuit inside or a faulty controller, which can lead to a fire.