How to properly remove the battery from the Xiaomi phone: instructions for all models

Xiaomi smartphones today are complex technical devices where the battery is integrated into the case at the factory level. Unlike older phones with removable covers, removing the battery from non-removable models requires caution, special tools and an understanding of the internal design, a procedure that may be necessary when replacing a bloated battery, repairing after a fall, or restoring the device after moisture.

It is important to understand that 90% of Xiaomi models after 2017 have adhesive battery fixation and are connected to the motherboard through a plume with a battery. ZIF-Incorrect actions can lead to short circuit, damage to the power controller or even fire. In this article, we will analyze the step-by-step algorithm for different generations of smartphones from Redmi Note. 4X Xiaomi 14 Pro, we will specify the necessary tools and warn against typical errors.

When you need to remove the battery from Xiaomi

There are several objective reasons for this procedure, but most cases come down to three main scenarios:

• 🔋 Battery bloating is a visually noticeable extension of the case, the extrusion of the screen or the back panel, and this is a critical malfunction, because lithium-ion batteries in this state are prone to spontaneous combustion.
• 💧 Liquid intake – if the phone falls into water or is spilled on a drink, the battery often needs to be removed to dry and clean contacts from corrosion.
• 🔧 Repair of other components – Replacing the screen, speaker, or camera may require a temporary battery shutdown for safety.
• ⚡ Diagnostics of power problems – if the phone doesn’t turn on, reboots cyclically or discharges quickly, checking the battery is on the standard checklist.

It is worth noting that in Xiaomi service centers for the replacement of the battery charge from 1,500 to 4000 rubles (depending on the model), while self-dismantling will cost only the cost of tools (about 800-1,200 rubles for a full set).

⚠️ Warning: If the battery is so swollen that it deforms the body, do not try to pierce or bend it - this can lead to instant fire.

Preparation: security tools and measures

Before you start disassembling, make sure you have everything you need. The minimum set of tools includes:

• 🔧 Plastic mediators (2-3 pieces) - for careful lid slashing and battery disconnection.
• 🔨 Set of screwdrivers (cross-haul) PH00, five-beamed Torx T3/T4, flat-headed).
• 🧲 Magnetic mat or tray - so as not to lose small screws.
• 🔥 Isopropyl alcohol (90%+) — Cleaning contacts and removing glue residues.
• 📦 Suction cups (optional) - help remove the back cover on models with OLED-screen.
• 🔌 Tweezers with curved ends - to work with glue tapes under the battery.

Also, prepare the workspace: the table should be clean, well-lit, without carpets or fabric coatings (static electricity!). It is advisable to work with gloves and safety glasses - especially if the battery is swollen. Some craftsmen recommend pre-discharge the battery to 20-30% - this reduces the risk of short circuits when contacts are accidentally closed.

⚠️ Warning: Never use metal tools to tamper with the battery, it can penetrate its shell. Even a microcrack in a lithium-ion battery leads to electrolyte leakage and the risk of fire.

Turn off the phone and remove it. SIM-map

Charge the battery to 20-30% (if it is not swelling)

Prepare your workspace (clean desk, good lighting)

Check for all the tools in the list above

Take a picture of the location of the screws before removing-->

Step-by-step: how to remove the battery from Xiaomi

The disassembly algorithm varies by model, but the overall sequence of actions is the same. Consider the universal method using the Xiaomi Redmi Note 10 Pro (similar to most devices in the Redmi, POCO and Mi line 2019-2023).

Step 1: Removing the back cover

On most models, the lid is attached to latches and glue. Carefully warm up the edges with a hairdryer (temperature not higher than 60 ° C!) or use a suction cup:

1. Apply the suction cup to the bottom of the lid (near the USB-C connector).
2. Pull up with effort - there should be a gap.
3. Insert a plastic mediator into the gap and carefully guide them around the perimeter, snapping clips.

On models with an aluminum frame (for example, Xiaomi 12T), the lid can be mounted on screws under a five-point Torx T3 key. They must be twisted out before you tweak the mediator.

Step 2: Disconnect the battery plume

When you take the lid off, you'll see the battery covered with black film. First rule: before you touch the battery, disconnect it from the motherboard!

1. Find a white connector with an orange or red tongue (usually located at the top of the board).
2. Carefully tuck the tongue with tweezers or a plastic spatula - the connector should move away.
3. Check the voltage at the battery contacts with a multimeter (should be 0 V).

Step 3: Remove the battery

Xiaomi's battery is mounted on double-sided scotch or glue strips to remove it:

1. Find the black “ears” (tapes) under the battery – pull after them with tweezers.
2. If there are no tapes, gently tuck the battery with a plastic mediator on the side, gradually separating it from the body.
3. When resisting, do not apply force - moisten with glue isopropyl alcohol and wait 1-2 minutes.

On POCO F3 and newer models, there may be a graphite gasket under the battery – don’t damage it, as it is responsible for the heat sink.

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If the battery is too glued, use the thread method: slash a thin line or dental floss under the battery and saw it back and forth like a saw, which helps to separate the glue without risking damage to the body.

Step 4: Checking and Preparing for a New Battery

After removal, examine the battery for:

• 🔍 Bloating – if the battery case is deformed, it cannot be used.
• 💦 Corrosion traces – green or white plaque on contacts.
• 🔌 Contact Integrity – Condensed or Oxidated Inferences.

Before installing a new battery, clean the seat with alcohol and remove the remnants of the old glue. The new battery must fit tightly to the body - otherwise cooling problems may occur.

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Never use superglue or other aggressive adhesives to lock the battery! only the original double-sided scotch or special battery glue (e.g. B-7000).

Features for different Xiaomi models

Xiaomi’s smartphone design has evolved over the years, and the process of battery extraction may differ, with key nuances for popular lines below.

For example, in the Xiaomi Mi A2, the battery is especially glued to the battery — you can not do without isopropyl alcohol or a special adhesive solvent. And in the POCO F4 GT, an additional screw of the motherboard mounting is hidden under the battery, which is easy to miss.

For flagship models (Xiaomi 13 Ultra, Mix Fold 2) self-replacement of the battery is not recommended - there is a high risk of damage to the cooling system or flexible displays.

Frequent Mistakes and How to Avoid Them

Even experienced users sometimes make critical mistakes when retrieving the battery, and here are the most common ones and ways to prevent them:

• ❌ Use of metal tools → Solution: only work with plastic or wooden mediators.
• ❌ Strong pressure on the bloated battery → Solution: if the battery is deformed, don't try to straighten it out, take it out.
• ❌ Warming up the cover with a too hot hair dryer → can melt glue or damage OLED-Solution: use a building dryer at a minimum temperature (up to 60).°C).
• ❌ Absence of antistatic bracelet → Static electricity can damage the motherboard. Solution: touch a grounded metal object with your hand before you work.

Another common problem is damage. ZIF-This connector is very fragile, and if you bend it, the phone will stop turning on. To avoid that, always stick the connector behind the plastic tongue, not the shoe itself.

⚠️ Warning: If after the battery is removed, the phone has stopped responding to charging, check the integrity USB-C The port and the power controller are often accidentally damaged when disassembling the flexible plume that goes to the connector.

What to do after removing the battery

If you successfully remove the battery, don't rush to install a new one right away.

1. Clean the case. Remove the glue residue with alcohol, check for any debris or metal shavings.
2. Contact check. Check the battery connector on the board -- if the contacts are oxidized, clean them with a stripe or alcohol.
3. Motherboard test. Connect your phone to a battery-free charger -- if it reacts (the light goes on), the board is good.
4. Install a new battery: Use only the original battery or a certified battery (e.g., from Patona or Baseus).

After installing the new battery, calibrate:

1. Charge your phone to 100% and keep charging for another 1-2 hours.
2. Turn off the charging and discharge until it is automatically turned off.
3. Repeat the cycle 2-3 times – this will help the power controller to more accurately determine the level of charge.

If the battery is discharged quickly after replacing, check Settings → Battery → Battery Use. It is possible that some application uses energy in the background. Also make sure that the new battery has the same capacity as the original (for example, for the Redmi Note 11 Pro it is 5000 mAh).

When is the best time to contact the service

Despite detailed instructions, there are situations when self-repair is impractical or dangerous:

• 🔥 Battery swelled (risk of fire during dismantling).
• 🔧 Phone guarantee - disassembly cancels it.
• 🛠️ A complex design model (e.g. Xiaomi Mix Fold or Black Shark).
• ⚡ After replacing the battery, the phone does not turn on or charge.
• 💻 Requires soldering (damaged connector or plume).

The cost of replacing the battery in the Xiaomi service center depends on the model:

• Redmi 9A/10A — 1 200–1 500 ₽
• POCO X3/X4 — 1 800–2 200 ₽
• Xiaomi 12/13 series — 2 500–3 500 ₽
• Flagships (Ultra, Mix) – 4,000–6,000 ₽

In informal services, the price may be lower by 20-30%, but there is a risk of installing a poor-quality battery. Always ask for a warranty for work and parts (at least 3 months).

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If the phone becomes overheated after you replace the battery, turn it off immediately! this may indicate a power controller malfunction or a short circuit in the circuit.

FAQ: Frequent questions about battery replacement in Xiaomi