Why you might need to remove the battery from Xiaomi
The battery is one of the most vulnerable components of the smartphone, and sooner or later Xiaomi owners face the question of its replacement or temporary removal, the reasons can be different from the bloating of the battery (which is dangerous to health!) to the complete loss of capacity when the phone runs out in an hour.
Xiaomi doesn’t provide easy access to the battery in most models: the body is glued together, the battery is soldered to the board or fixed with a special glue. This complicates the process, but does not make it impossible. The main thing is to act carefully so as not to damage the plumes, contacts or the case itself. In this article, we will analyze the step-by-step instructions for different models, list the necessary tools and describe what errors can lead to permanent damage to the smartphone.
It is important to understand that the battery retrieval deprives you of warranty (if it is still valid). If the phone is warranty, it is better to contact the service center. For self-repair, models older than 2-3 years or devices whose warranty period has expired will suit.
What tools will you need
Without the right tools, it’s almost impossible to remove the battery from Xiaomi.
- 🔧 Plastic mediators or shoulder blades to gently tweak the body and disconnect the battery. Metal tools can scratch the body or damage the plumes.
- 🔥 A hair dryer or a thermo-air station to soften the adhesive that attaches the battery. Optimal temperature: 60-80°C (not higher!).
- 🧲 Suction cup - will help to lift the back cover after heating. Any suction cup with a diameter of 3-5 cm will do.
- ⚡ Isopropyl alcohol (90%+) — to remove the residues of the adhesive from the housing and battery. Acetone or solvents cannot be used!
- 🔌 Screwdriver cross (PH00) And the pentagon (for some models) -- for unscrewing screws. Xiaomi often uses vandalism-proof screws.
- 🧤 Gloves and safety glasses – a bloated battery can leak or ignite if damaged.
If you are planning to replace the battery, buy a new one in advance, either original or quality. For popular models (Redmi Note 10/11, POCO X3, Mi 11), suitable batteries are easy to find on AliExpress or in specialty stores. Pay attention to the capacity: it must match the original one (for example, 5020 mAh for the Redmi Note 10 Pro).
⚠️ Warning: Never use a knife or other sharp metal objects to tamper with the battery! risk of battery puncture leads to fire or explosion. plastic tools are safer.
Preparing the smartphone for disassembly
Before you start removing the battery, you need to properly prepare the phone, which minimizes the risk of damage and simplifies the process:
- Turn off your smartphone and remove it. SIM-Memory card (if installed) will prevent accidental closure of contacts.
- Discharge the battery to 20-30%: Fully charged battery is more dangerous if damaged, and fully discharged can not keep the shape (especially if blown).
- Backup data. Disassembly always carries the risk of losing information, even if you don't plan on formatting the device.
- Check the case for cracks. If the back cover is damaged, it will have to be replaced, otherwise the phone will not be airtight once assembled.
If the battery is swelling, be careful.
- The screen or back cover "rised" at the edges.
- The phone is worse on a flat surface (swinging).
- There were gaps between the body and the display.
In this case, do not heat the battery with a hairdryer for longer than 10 seconds in one approach - the risk of ignition increases.
💡
If the battery is blown up, put the phone in the freezer for 15-20 minutes before removing it (in a packet!). The cold will temporarily reduce chemical activity and reduce the risk of fire.
Step-by-step: how to pull the battery from Xiaomi
The disassembly process may vary slightly depending on the model, but the overall scheme is the same for most Xiaomi smartphones.
Step 1: Removing the back cover
1. Heat the edge of the back cover (around the perimeter) with a hair dryer for 1-2 minutes. Keep the hair dryer at a distance of 5-7 cm so as not to overheat the plastic.
2. With a suction cup, lift the lid from one of the corners (usually starting at the bottom where the connectors are located). If the suction cup is not holding, gently tuck the lid with a plastic spatula.
3. Swipe the blade along the seam, separating the lid from the body. Be careful: there may be latches or plumes inside (for example, in models with a high-speed lid). NFC-lid-top).
Step 2: Spinning the screws
1 Unscrew all screws that fix the metal plate (if any). In some models (POCO F3, Mi 10T), the plate may be missing.
2. Remove the plate and put it together with the screws (they may differ in length!).
Step 3: Disconnecting the plumes
1. Carefully disconnect the battery plumes, the display and other components. Use a plastic blade to jack the connectors. Don't pull the wires!
2 If the plumes are glued, drop isopropyl alcohol on them and wait 10-15 seconds.
Step 4: Removing the battery
1. Heat the battery with a hairdryer (not higher than 80°C!) for 30 to 60 seconds. The glue under the battery will soften.
2 Carefully slap the battery with a plastic spatula from any angle. If it doesn't respond, warm it up again.
3. Slowly separate the battery from the body, putting it around the perimeter. If the glue is too strong, use threads or guitar strings (swipe them under the battery and "saw" the glue).
Is the phone off?|Is it cut? SIM-map?|Is the battery discharged to 20-30%?|Are the tools ready (scapula, hair dryer, alcohol)?|Are gloves on?-->
In some models (Redmi Note 8 Pro, POCO X2), the battery is especially glued to the battery. If it does not separate, do not put too much effort - you better repeat the heating.
⚠️ Warning: If the battery starts to smoke, hiss or heat up, move away from the phone immediately and don't breathe steam! These are signs of thermal acceleration. Leave the room and wait until the battery cools down.
Features of battery extraction in popular Xiaomi models
Xiaomi’s smartphone design varies depending on the series and year of release, and the following are the key nuances for the most common models:
| Model | Type of battery attachment | Difficulty of extraction | Features |
|---|---|---|---|
| Redmi Note 9/10/11 | Glue + press-plate | Medium | The screws are under the plate of different lengths. The NFC plume is glued to the lid. |
| POCO X3/X3 Pro | Glue + bilateral scotch | Tall. | The battery is glued very strongly, heating up to 70-80 ° C is required. |
| Mi 11/11T | Glue + metal frame | Low. | The back cover is glass - carefully with heating (may crack). |
| Redmi 9A/9C | Glue + latches | Low. | The case is plastic, it bends easily. There are no screws under the cover. |
| POCO F3/GT | Glue + soldered contacts | Very high. | The battery is connected to the board with a flexible cable - a soldering iron is required. |
For soldered models (such as the POCO F3), you will need a soldering station and experience with microelectronics. If you have never soldered, you should contact the service.
What to do if the battery is soldered?
Frequent Mistakes and How to Avoid Them
Even experienced craftsmen sometimes make mistakes when retrieving the battery, and here are the most common mistakes and ways to prevent them:
- 🔥 Battery overheating - heating above 80°C can cause ignition. Use a thermometer or keep a hair dryer at a safe distance.
- 🔧 Loss of screws – screws in Xiaomi often vary in length. Store them in separate containers or stick them on paper in order of twisting.
- ⚡ The plume damage -- don't pull the wires, just the connectors -- if the plume breaks, it's got to be replaced.
- 💥 A battery puncture - even a slight damage to the shell can cause electrolyte leakage.Use only plastic tools.
- 📱 Display damage - when removing the lid, do not press the screen. In models with a glass back panel (Mi 11), it can crack.
Another common mistake is that you don't completely shut down the power, and even if the phone is turned off, there's still a voltage on the motherboard, so you can turn the device off completely.
- Disconnect the battery plume.
- Wait 1-2 minutes (discharge the capacitors).
- Touch the board only with an antistatic screwdriver.
1. Correct connection of the plumes.
2. the integrity of the contacts on the board (whether there is oxidation or breaks).
3. Condition of the new battery (possibly discharged or defective).-->
What to do after removing the battery
When the battery is successfully removed, it is necessary to:
- Clean the case of glue residues. Use isopropyl alcohol and a lilac-free wipe. Don't rub too hard, you can damage the graphite pads (they are responsible for the heat sink).
- Check the new battery, make sure it is the same size and capacity as the original battery, and it should have a labeled sticker on it (e.g., BM40 for the Redmi Note 10).
- Install a new battery: Apply a thin layer of double-sided tape or special glue (such as the B-7000). Connect the battery plume to the board. Carefully press the battery to avoid skewing.
Collect the phone in reverse order.
Don't turn the phone on immediately after assembly. Let the glue under the battery dry (10-15 minutes), then plug the charger in. If the phone doesn't respond, check the power plume connection.
⚠️ Warning: If the phone is rapidly discharged or overheated after the battery is replaced, it may be an unoriginal or defective battery.