How to remove the battery on the Xiaomi phone: instructions for beginners and masters

Removing the battery on Xiaomi smartphones is a challenge that owners face when replacing the battery, repairing after a fall or restoring the device after moisture hits. Unlike older phones with removable covers, modern Redmi, POCO and Mi models have a non-shatterable body, where the battery is glued to the rear panel, which complicates the process, but does not make it impossible to perform independently.

In this article, we will discuss the step-by-step battery recovery algorithm, list the necessary tools and how to avoid typical errors. We will focus on models with an integrated cooling system (for example, Xiaomi Black Shark or POCO F5), where the battery can be additionally fixed with metal plates, and you will learn when to contact the service center, and when you can cope with it on your own.

Preparing for battery removal: tools and safety measures

Before you start disassembling, make sure you have everything you need, and if you don't have even one tool, you can damage the plumes or the body, and here's the minimum set you'll need:

• 🔧 Plastic mediators (2-3 pc.) - for careful putting of the cover and disconnecting the battery.
• 🔨 Cross screwdriver (usually) PH00 or PH0) — hull-rotor.
• 🔥 Dryer or thermo-air station - for softening the glue (temperature 60-80)°C).
• 🧴 Isopropyl alcohol (90%+) — glue-residue.
• 📏 Suction - helps to remove the back cover on models with a glossy surface.
• 🛡️ Gloves and safety glasses – the battery may swell or leak.

If you’re working with a Xiaomi 12 Pro or later, where the battery is split in two (dual-cell technology), you’ll need a special adapter to synchronize charging after the reverse build.

⚠️ Warning: Never use metal tools to tamper with the battery! even a micro-crack on the battery can cause a fire or explosion. Plastic mediators are sold in phone repair kits (costs from 300) ₽).

Step 1: Turn off the phone and remove the back cover

The first step is to completely shut down the power, and even if the phone is off, there may be a voltage in the circuits, so that you don't short-circuit.

1. Press the power button and hold for 10-15 seconds until the screen goes out.
2. If the phone doesn’t respond, plug it into charging and forced restart: Power + Volume Up (for most models).
3. After you turn off, remove SIM-card and memory card (if any).

Now we're going to take the back cover off. POCO X is mounted on latches and glue, and flagships (Mi 13 Ultra) may have additional screws under plugs. Use a hair dryer to heat the edges of the body around the perimeter for 2-3 minutes. Temperature should not be higher than 80.°C, or it'll hurt. OLED-screen.

Carefully apply the lid to the plastic mediator, starting at the bottom edge (near the USB-C connector). If the lid does not lend itself, warm up again. On models with a glass back panel (for example, Xiaomi Civi 3), be careful - the glass can crack if you press too much.

Step 2: Disconnecting the plumes and batteries

When you take the lid off, you'll see the battery covered with a black film. Don't pull it, it's a protective layer, not an adhesive. First you have to disconnect the battery from the motherboard.

1. Find the battery connector (usually white or orange, marked as BATT).
2. Carefully put a plastic mediator on it. Don't use metal!
3. If the connector fails, check if there is a latch (often found on the POCO F4 GT).

On some models (Xiaomi Mix Fold 2, Redmi K60 Pro) the battery can be connected via a flexible plume instead of a standard connector, in which case you will need to completely remove the motherboard, which greatly complicates the process.

⚠️ Note: If after turning off the battery connector, the phone still turns on when connecting to charging, then the power goes through the second circuit (for example, from the connector). USB-C In this case, you need to solder off the contacts of the battery with a soldering iron.

Step 3: Remove the battery without damage

The most important step is to separate the battery from the body, and Xiaomi models use double-sided, high-strength tape, which can break when unscrupulously removed.

1. Apply isopropyl alcohol to the edges of the battery. It dissolves the glue without damaging the cells.
2. Wait 5-7 minutes, then gently tuck the battery with a plastic spatula.
3. If the battery doesn't go away, repeat the procedure with alcohol. Don't force it, you can tear the aluminum shell.
4. On models with a graphite pad (Black Shark, POCO F5), first remove it, then the battery.

To simplify the task, special devices can be used:

• 🧲 Magnetic holder – fixes the battery after separation.
• 📦 Battery-removal kit (cost) ~500 ₽) — includes metal plates for uniform lifting.

If the battery is swollen, act very carefully:

• 🚫 Do not let it go, it will cause a fire.
• 🔧 Use a ceramic knife to neatly cut the glue.
• 🧊 Refrigerate the battery in the freezer for 10-15 minutes (wrap in plastic!) to reduce the risk of reaction.

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If the battery is glued too much, try to heat it with a hair dryer on the back side (through glass) - this will weaken the glue without damaging the elements.

Step 4: Cleaning and Preparing for New Battery Installation

After removing the old battery, you must carefully clean the seat of glue and dust residues.

• 🧴 Isopropyl alcohol - to remove glue.
• 🧻 Whipless wipes - so that there are no fibers left.
• 🔍 Loop or microscope – to check the contacts on the board.

Pay special attention to the contacts of the battery connector. If they are oxidized (green coating), clean them with a contact striper or alcohol. On Xiaomi 13 Pro and newer models, the connector can be protected by a silicone pad - do not remove it, it prevents corrosion.

Use 3M double-sided tape (e.g. 3M 9448A) to install the new battery, which provides a secure fixation and leaves no traces on the next repair, and apply tape to the case rather than the battery, making it easier to adjust position.

Common Mistakes and How to Avoid Them

Even experienced technicians sometimes make mistakes when replacing batteries, and here are the most common ways to prevent them:

One of the most insidious mistakes is the incorrect polarity of the new battery. On some models (POCO M3 Pro, Redmi 9A), the battery connector is not symmetrical and can be inserted backwards, which leads to instantaneous failure of the power controller. Always check the (+ and -) markings on the battery and board.

Another problem is battery incompatibility, for example, the Redmi Note 10 Pro battery won't work for the Redmi Note 10, even if it looks similar. Always check the battery articular (printed on the label) and compare it to the original. Counterfeits often have smaller capacity and quickly fail.

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Before buying a new battery, check its article on the official Xiaomi service website. QR-authentication.

When is the best time to contact the service center

While replacing a battery seems like a simple procedure, there are cases where self-repair is not recommended:

• 🔧 If the phone is warranty, the opening of the case will cancel it.
• ⚡ If the battery is too swelled or leaking, the risk of fire is too high.
• 📱 If the model has a complex design (for example, Xiaomi Mix Fold 3 with a flexible screen).
• 🔌 If the battery is not recognized after replacement, and you are not sure about the diagnosis.

The cost of replacing the battery in the official Xiaomi service varies from 1,500 to 4000 ₽ depending on the model:

• Redmi Note 11 — ~1 800 ₽;
• POCO F4 GT — ~2 500 ₽;
• Xiaomi 13 Pro — ~3 800 ₽.

If you've decided to repair your phone yourself, but something has gone wrong, don't try to fix it. For example, if you soldered your circuit board, you could have the device completely out of order, and in such cases, you'd better go to the professionals with the micro-soldier equipment.

FAQ: Frequent questions about replacing the battery with Xiaomi