Removing the battery from a Xiaomi phone is a challenge that users face when replacing the battery, repairing after falling or getting moisture. Unlike older “clamshells” with removable covers, modern Redmi, POCO or flagship Mi smartphones require care: improper extraction can damage plumes, connectors or even cause short circuits. This article will help you understand how to safely get a battery from Xiaomi from different generations, from budget models to premium devices.
It is important to understand that the design of the batteries in Xiaomi smartphones has evolved. If in the Redmi Note 4X (2017) the battery was attached to double-sided tape and had a flexible plume, then in the Xiaomi 13 Pro (2023) uses high adhesion glue and additional fixers. We will consider universal methods suitable for most models, as well as nuances for specific lines.
Preparing for battery recovery: safety tools and measures
Before you start disassembling, make sure you have everything you need. The minimum set of tools includes:
- 🔧 Plastic mediators (2-3 pc.) - for careful slashing of the body and separation of the battery.
- 🔥 Dryer or thermo-air station - for softening the glue (temperature 60-80)°C).
- ⚡ Insulation tape or capron tape – to insulate the battery contacts after extraction.
- 🛠️ Screwdriver cross (PH00) and five-beam (Pentalobe) - for screws of different models.
- 🧲 Magnetic mat or container – to avoid losing small details.
Pay special attention to safety:
- 🚫 Do not use metal tools to tamper with the battery – they can puncture its shell.
- 🔋 Do not remove the battery at a charge level above 25% – this reduces the risk of fire.
- 🧤 Work with gloves if the battery is swollen - there may be caustic substances inside.
⚠️ Note: If Xiaomi battery is swelled or deformed, do not try to remove it yourself - contact the service center. the risk of rupture of the shell and leakage of the electrolyte in such cases is extremely high.
Step-by-step: how to remove the back cover
The first step is disassembling the body. In most Xiaomi models (except for the aluminum flagships), the back cover is attached to the latches and glue.
- Turn off the phone and remove the tray for SIM-cards (use a paper clip or special key).
- Heat the edge of the back cover with a hair dryer around the perimeter for 2-3 minutes. Keep the hair dryer at a distance of 5-7 cm so as not to overheat the display.
- Insert a plastic mediator into the gap between the body and the lid (start at the bottom edge where the charging connector is). Carefully drive the tool along the body, snapping the clamps.
- After the lid is separated, do not lift it sharply - plumes can be glued under it (for example, in the POCO X3 Pro).
Difficulties can arise with models with a glass back panel (for example, Xiaomi Mi 11), where the glue is more durable, and to separate the lid may require a special suction cup (like for iPhone). If the lid does not lend itself, reheat it with a hair dryer.
☑️ Preparation for lid removal
Disconnecting the battery plume: where is the connector
After removing the lid, you need to detach the battery from the motherboard. The power connector is usually located at the bottom of the phone and is closed with black insulation tape. In Redmi models, it is most often located to the left of the charging connector, and in POCO, it is closer to the center.
To turn off the battery:
- Remove the insulating tape from the connector (carefully, do not damage the small parts nearby).
- Put a plastic mediator black fixator connector (it leans up).
- Remove the battery plume from the connector by pulling it sideways (not up!).
In some models (such as the Xiaomi 12T), the connector can be soldered, which requires a soldering station and experience with microelectronics, and if you are not sure about your skills, you should trust the professionals.
⚠️ Warning: After the battery is turned off, the phone will completely shut down.If you plan on further repairs (such as replacing the display), take a picture of the location of all the plumes before they are disconnected.
| Xiaomi model | Type of battery attachment | Location of the connector | Features |
|---|---|---|---|
| Redmi Note 8/9/10 | Double-sided scotch | Left of the Type-C connector | Easily separates after heating |
| POCO F3/F4 | Glue + fixers | Under a metal screen | Removal of the middle framework is required |
| Xiaomi 11/12/13 | High adhesion liquid glue | Hidden under graphite film | It is recommended to use isopropyl alcohol 90% |
| Redmi A1/A2 | Removable battery (theoretically) | Under the back cover. | In practice, it is glued, removed with effort. |
Battery Removal: Methods for Different Types of Adhesive
The most important step is to separate the battery from the body, depending on the model Xiaomi can use different types of adhesive:
1. Double-sided Scotch (Redmi Note 7/8/9, POCO X3)
In low-end models, the battery is attached to tape, which loses its stickiness after heating.
- 🔥 Warm up the battery with a hairdryer (temperature 70-80)°C) for 3-5 minutes.
- 📦 Put the battery on a plastic card or a mediator on the side (where there are no plumes).
- 🖐️ Pull up carefully without putting too much effort.
Liquid glue (Xiaomi 11/12/13, POCO F4/F5)
The premium models use polymer-based adhesives that require a solvent.
- 🧴 Isopropyl alcohol 90% or a special solvent for B-7000.
- 💉 A needle syringe or a pipette for applying liquid under the battery.
- ⏳ Waiting time – 10-15 minutes to soften the glue.
Algorithm:
- Apply alcohol to the edges of the battery (don’t pour it all!).
- Wait 10 minutes, then try to tamper with the battery with the mediator.
- If it does not work, repeat the procedure, adding alcohol to hard-to-reach places.
What to do if the battery does not separate?
Frequent Mistakes and How to Avoid Them
Even experienced users sometimes make mistakes when removing the battery.
- 🔌 Attempt to disconnect battery plume with metal tools → short circuit risk: use only plastic or wooden mediators!
- 🔥 Battery overheating with a hairdryer (above 90)°C) → It can cause swelling or fire. Control the temperature with a thermocouple.
- 💥 Sharp battery pulling → damage to the plume of the display or motherboard. Act smoothly, checking resistance.
- 🧴 Use of acetone instead of isopropyl alcohol → It corrodes plastic body parts, only alcohol 90% or higher!
Another common problem is that the battery's flexible plume is damaged: in the POCO F3 and Xiaomi 11T, it's very thin and easily torn, and if the plume breaks, you'll have to solder a new one or use wireless charging (if supported).
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If the battery is swelling but the phone is still working, don't charge it, which could make the problem worse, remove the battery immediately or at least turn off the power plume.
Installation of a new battery: nuances and calibration
Once the old battery has been successfully removed, you can start installing a new one.
- 🔄 Check compatibility, the battery should be the same capacity and the same connector. For example, a Redmi Note 10 Pro battery will suit. BN4X 5020 mAh.
- 🧲 Clean the seat of glue residues (use alcohol and a lilac-free napkin).
- 🔌 Connect the plume of the new battery before it is fixed - so it is more convenient to check the performance.
To install the new battery, use:
- 📦 Double-sided scotch 3M (budgetary).
- 🧴 Clay. B-7000 (for premium smartphones – apply a thin layer on the edges.
After installation:
- Connect your phone to charge and wait 100%.
- Calibrate the battery: discharge the phone to 0%, then charge to 100% without interruption.
- Check the battery temperature in Settings → Battery – it should not exceed 40 ° C when charging.
⚠️ Warning: If the phone doesn't turn on after the battery is replaced, check: Correct connection of the plume (sometimes it is inserted "upside down"). Integrity of contacts on the motherboard (possibly oxidation). Battery compatibility (some "non-originals" require firmware of the power controller).
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Even if a new battery looks identical to the old one, its capacity may be different. Always check the labeling and buy batteries from trusted suppliers (for example, RepairUniverse or ETradesupply).
Xiaomi models with removable battery: myth or reality?
Many users believe that some Xiaomi models have a removable battery.
- ✅ Theoretically removable: Redmi A1, Redmi Go, Redmi 7A — But in practice, they're glued and removed with effort.
- ❌ Non-removable: all models POCO, Redmi Note (starting with the 5-Series one, Xiaomi Mi/Mix.
Even in removable models, the process of removing the battery requires precision, for example, in the Redmi 8A, the lid is removed easily, but the battery is glued to a metal plate that you have to bend.
If you need a phone with a real removable battery, pay attention to:
- Nokia 105 (2023) – budget “bell” with a replaceable battery.
- Samsung Galaxy XCover 5 is a protected smartphone with a removable battery.
In the line of Xiaomi such models no more – the manufacturer has switched to non-shatterable housing to reduce the thickness and improve dust protection.