Removing the battery from Xiaomi phone is a challenge that owners face when replacing the battery, repairing after falling or getting moisture. Unlike older devices with removable covers, modern smartphones Redmi, POCO or Mi require care: improper actions can lead to damage to the plumes, battery rupture or even fire. This article will help you understand how to safely dismantle the battery at home, what tools you will need and what to look for when working with different models from the budget Redmi Note 12 to the flagship Xiaomi 14 Ultra.
It's important to understand that most Xiaomi smartphones after 2018 have non-removable batteries glued to the body, which complicates the process, but does not make it impossible. The main thing is to follow the instructions and take your time. If you have never been to the equipment, you should contact the service center. However, for experienced users or those who are willing to take risks, we will describe each step in detail, from tool preparation to final inspection.
Preparation: What to Know Before Starting Work
Before you start disassembling, assess your strengths and risks. The battery in Xiaomi smartphones is one of the most vulnerable components. Its damage can lead not only to the failure of the phone, but also to a fire or explosion (especially if the battery is blown up).
- 🔋 Battery status: if it's blown up (phone body is deformed), do not puncture it or press it. It's fraught with fire.
- 🛠️ Tools: You can't do without a specialty set (plastic blades, suckers, tweezers) and metal screwdrivers can damage the body.
- 📱 Model of the phone: the design of Redmi 9A And Xiaomi 13 Pro is different. Find out where the latches and adhesive strips are for your model (more on that below).
- 🔌 Battery Charge: If the phone is on, discharge it before 20-30%. Fully charged battery is more dangerous when mechanically exposed.
Also, prepare your workspace: a clean desk with good lighting, no carpets or fabrics that can be electrified, have a Class D (for lithium batteries) fire extinguisher on hand, or at least a tight blanket in case of fire. Do not work near open flames or heat sources.
⚠️ Warning: If the phone is in water or other liquid, it must be completely dryed for 48 to 72 hours before removing the battery.
Essential tools: what to buy for disassembly
To safely remove the battery from Xiaomi, you need a specialized set of tools. Don't skimp on quality, cheap plastic blades can break and damage the plumes. Here's the full list:
| Tool. | Appointment | Where to buy |
|---|---|---|
| Suction (2-3 pcs) | For smacking the cover after heating | AliExpress, parts stores |
| Plastic blades (0.1–0.3 mm) | Separation of the body without scratches | Phone repair kits |
| Fryer-dryer | Softening of glue (temperature 60–80 °C) | Household stores |
| Tweezers (antistatic) | Careful disconnection of plumes | Radio shops |
| Isopropyl alcohol (90%+) | Cleaning glue residues | Pharmacies, hardware stores |
In addition, it may be necessary to:
- 🧲 Magnetic mat – not to lose screws (in some Xiaomi models, they are up to 20 pieces!).
- 🔧 Screwdriver. T3/T4 — for the mounting screws of the motherboard (found in POCO F5 older).
- 📦 Container for parts - so as not to confuse screws during assembly.
If you are planning a battery replacement, pre-order the original battery. Xiaomi is suitable for batteries with the brand BQB or ATL (for example, BQB-4000mAh for Redmi Note 11). Avoid cheap analogues - they may not meet the declared capacity or swell in a month.
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Before buying a battery, check its article on Xiaomi's official support website.Counterfeiting is often mislabeled.
Step-by-step: how to remove the cover and get to the battery
The disassembly process starts with the back cover being removed, and most Xiaomi models have it glued around the perimeter, so you'll need heat.
- Turn off the phone and remove it. SIM-If the battery is swollen, don't turn on the machine!
- Heat the edges of the body with a hair dryer (warm air mode) for 2-3 minutes. Keep the hair dryer at a distance of 5-7 cm so as not to overheat the display.
- Put the lid on the suction cup at the charging connector or speaker, and if you don't, repeat the heat.
- Carefully swipe the perimeter with a plastic blade, separating the glue. Don't push hard - you can damage the plumes!
When you take the lid off, you'll see the battery glued to the body, and in some models (like the Xiaomi 12T), it's covered with a metal plate, you have to unscrew it with a T3 screwdriver. Notice the plumes that go from the battery to the motherboard, you can't tear them or bend them.
⚠️ Attention: In smartphones POCO X3 Redmi Note 10 is under the battery is a plume NFC-The damage to the antenna will result in a non-working contactless payment.
To disconnect the battery, find the power connector (usually white or orange) and gently tuck it in with a plastic blade. Don't pull the wires! If the connector fails, check if there is a latch fixing (found in Mi 11).
Phone turned off and removed. SIM-map|Heated edges of the body with a hairdryer|Suction lid's covered.|The battery connector is disconnected from the board|Checked plumes under the battery-->
How to separate the battery from the body: methods and risks
The most important step is to remove the glued battery. Xiaomi uses two types of glue:
- 🧴 Liquid glue (in budget models) - removed by heating and plastic spatula.
- 🧲 Bilateral Scotch (in flagships) - requires a solvent (isopropyl alcohol).
Method 1: Warming + spatula (for liquid glue)
Heat the battery with a hair dryer to 60-70°C (not higher!). Tap the edge with a plastic blade and slowly drive it under the battery, separating the glue. If you feel resistance, stop and heat again. Never use metal tools - they can pierc the battery and cause a short circuit.
Method 2: Alcohol + thread (for bilateral scotch)
Put the isopropyl alcohol under the battery with a syringe (no needle!). Wait 5-10 minutes for the glue to soften. Then slash a thin nylon thread under the battery and saw it back and forth like a string, which is longer but safer for plumes.
In some models (such as the Xiaomi 13), the motherboard mount screws are hidden under the battery, which must be unscrewed until the battery is completely separated, otherwise you can tear the plumes. Take a picture of the screws' location so that you don't get confused when you build them.
What to do if the battery is too tight?
Features of battery extraction in popular Xiaomi models
Xiaomi’s smartphone design varies depending on the series, and the following are key nuances for the most common models:
| Model | Type of glue | Features | Difficulty (1-5) |
|---|---|---|---|
| Redmi Note 12 | Liquid glue. | The battery is easily separated after heating. NFC plume under the battery. | 2 |
| POCO X5 Pro | Double-sided scotch | It takes alcohol. The screws under the battery are fixing the board. | 4 |
| Xiaomi 13 Lite | Liquid glue + scotch | Thin body – the risk of damage when heated. | 5 |
| Redmi 10A | Liquid glue. | Simple design, suitable for beginners. | 1 |
For the Xiaomi 12S Ultra and 13 Ultra, the process is complicated by having two batteries (divided in half), which must be removed in turn, starting from the top, and these models also have additional adhesive stripes around the camera that can be damaged if heated sloppyly.
If you're working with the POCO F4 GT or other gaming smartphones, note that their batteries often have a reinforced mount due to the cooling system.
What to do after extraction: check and replacement
When the battery is finally separated from the body, inspect it for damage:
- 🔍 Bloating: even a slight deformity is a reason to replace.
- 🔋 Oxidation of contacts: clean them with alcohol and cotton swab.
- 📏 Thickness: Compare with the new battery (should match up to a millimeter).
Before installing the new battery:
- Remove the residues of the glue from the case (use alcohol and a plastic shoulder blade).
- Check the integrity of the battery plume and connector on the board.
- Apply a new adhesive (e.g., B-7000) around the battery perimeter.
When you connect a new battery, first connect the power connector, then gently put it in place, pressing it to fix the glue. Don't turn the phone on immediately - let the glue dry for 10-15 minutes.
⚠️ Warning: After replacing the battery, reset the calibration data in the Settings menu → Battery → Resetting the stats, which will help the system correctly determine the new charge level.
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Even the original battery, after being replaced, can show an incorrect percentage of charge in the first 2-3 cycles. This is normal - it takes time to calibrate.
Frequent Mistakes and How to Avoid Them
Errors in battery recovery can be costly, from damage to phone injuries, and here are the most common mistakes and ways to prevent them:
- 🔥 Overheating with a hair dryer: temperature above 80°C deforms plastic and can melt plumes. Use a thermometer.
- ⚡ Short circuit: do not touch the battery contacts with metal tools.
- 🔧 Loss of screws: in Xiaomi Mi 11 screws of different lengths - confusing them, you can damage the board.
- 📱 Display damage: When you jack the lid, don't press the screen. In the Redmi Note 11 Pro, it is glued separately.
Another common problem is that the battery is not fully powered out, and if you forget to disconnect the power connector and start to separate the battery, it can cause the charge controller to burn out. Always check that the phone is completely powered down (even the device that is turned off can have residual charge on the board!).
If the phone does not turn on after assembly:
- Check if the battery connector is connected.
- Make sure the plumes are not clamped by the body.
- Connect charging – sometimes a “push” is required for the first turn on.