How to remove the battery from the Xiaomi phone: instructions for beginners and experienced users

When and Why to Remove the Battery from Xiaomi

Modern Xiaomi smartphones are designed with non-removable batteries, but sometimes they still have to be removed, which may be necessary when replacing the battery due to loss of capacity, repairing after falling or getting moisture, and diagnosing hardware malfunctions. However, the procedure requires caution: improper actions can lead to damage to the plumes, short circuits or even fire.

In this article, we will learn how to safely remove the battery from popular Xiaomi models (including Redmi, POCO and flagship series), what tools you need, and what to look for to avoid turning the phone into a brick.

⚠️ Important: If your Xiaomi is still under warranty, self-opening the case will cancel it.

What Xiaomi models allow you to remove the battery?

Most modern Xiaomi smartphones (released after 2018) are equipped with non-removable batteries glued to the body, but the degree of difficulty in extracting varies depending on the model:

• 📱 Budget series (Redmi) 9/10/12, POCO M3/M4): The battery is glued, but access to it is relatively simple.
• 💎 Flagships (Xiaomi) 12/13/14, Mix Fold: complex design with additional fasteners and heatpaste.
• 🔋 Older models (before 2017, for example, Redmi) 4X, Mi A1): removable batteries under the back cover.

Below is a table with approximate estimates of the difficulty of battery recovery for popular models:

🔹 Note: In models with wireless charging (e.g. Xiaomi) 12S Ultra: The battery is often fixed with additional metal plates, making it difficult to remove.

Preparation: security tools and measures

Before you start disassembling, prepare everything you need, and the lack of the right tools is the main cause of damage to your phone when you repair yourself.

• 🔧 Set of screwdrivers (cross-cross-haul) PH00, PH0, Five-pointed, flat for some models).
• 🧲 Suction cup for removing the display (or a mediator made of plastic).
• 🔥 Hair dryer or thermo-air station (for softening glue).
• 🧴 Isopropyl alcohol (90%+) glue-cleaner.
• 🛠️ Plastic blades (metallic can damage plumes!).
• 🔋 New battery (if you are planning to replace) with suitable capacity and connector.

⚠️ Warning: Never use knives, scissors or sharp-edged screwdrivers to smack the battery! this can puncture the battery and cause a fire or chemical burn.

Also prepare the workplace:

• 📍 Work on a clean, clean surface with good lighting.
• 🧲 Use an antistatic bracelet or periodically touch a grounded object to remove static electricity.
• 📸 Take a picture of each step, it will help to properly assemble the phone back.

Turn off the phone and remove it. SIM-map|Charge the battery before 30-50% (safe)|Prepare tools and the workplace|Wear protective glasses (recommended)|Check the phone model and disassembly scheme-->

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

The battery recovery process can be divided into 4 main steps: disassembling the case, disconnecting the plumes, detaching the battery and removing it. Below is a universal instruction that is suitable for most Xiaomi models (except for the flagships with thermal paste, they require additional heating).

Step 1: Removing the back cover

1. Turn off the phone and remove the tray for SIM-map.

2. Heat the back end edge with a hair dryer (~60°C) for 1-2 minutes to soften the glue. Don't direct airflow to the display!

3. Tap the lid with a plastic spatula or suction cup starting at the bottom edge (near the USB-C connector).

4. Carefully walk around the perimeter, separating the latches. In some models (for example, POCO X3), the lid is attached with additional screws under the stickers.

Step 2: Disconnect the plumes and batteries

1 Unscrew all screws that fix the metal plate above the battery (usually 4-6 pieces).

2. Carefully remove the plate and put it aside (do not lose the screws!).

3. Unplug the battery connector with a plastic blade. Never pull the wires, just the connector!

4.If the phone is not turned on, check the voltage on the battery contacts with a multimeter (should be ~3.7-4.2V).

Step 3: Separation of the battery from the body

1. Put a plastic blade on the battery from any angle. If it doesn't lend itself, heat the body with a hairdryer (not higher than 70°C!).

2.Put a thin plastic card or a special tool for retrieving the batteries under the battery to prevent re-adhesion.

3. Slowly drive the blade along the battery, separating it from the body. In some models (Redmi Note 11) the glue is applied spotwise - do not make excessive efforts.

4.If the battery is glued too much, use isopropyl alcohol to dissolve the glue (apply drops at the edges).

Step 4: Extract and Verify

1. Completely separate the battery from the housing and remove it. Pay attention to the markings (capacity, voltage, production date).

2. Examine the battery for bloating, corrosion or damage. If there are traces of oxidation on the contacts, clean them with alcohol.

3. Check the integrity of the plumes and connectors on the motherboard. Damaged contacts could cause future problems.

⚠️ Warning: If the battery is deformed or leaked when you remove it, put it in a sealed bag immediately and take it outside!

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If you are replacing the battery, check the voltage with a multimeter before installing the new one. It should be within 3.7-3.9V. If less, the battery is discharged and may not turn on after installation.

Frequent Mistakes and How to Avoid Them

Even experienced users sometimes make mistakes when retrieving the battery. TOP-5 The most common problems and ways to prevent them:

• 🔥 Hydrogen overheating → Use a temperature-adjusted thermo-air station (maximum) 70°C) and keep the hair dryer at a distance 5-10 centimeter.
• ⚡ Damage to the display plume → Don't pull the lid on the side of the screen. Start at the bottom or side edge.
• 🔋 Battery puncture → Never use metal tools to separate the battery!
• 🔧 Loss of screws → Stack them in a magnetic bowl or paste on a scotch in order of extraction.
• 📱 Wrong assembly. → Take photos of each step of disassembly and monitor the location of sealing rubbers.

One of the most dangerous mistakes is ignoring battery bloating, and many users try to push the battery back, but it leads to:

• 💥 Shell rupture and electrolyte leakage.
• 🔥 Short circuit during re-installation.
• 🚫 Loss of warranty (even if the phone is still on warranty, a bloated battery is a reason for a free replacement in the service).

🔹 Tip: If after removing the battery phone does not turn on, check:

• Is the battery connector connected to the motherboard?
• Integrity of the fuse on the board (often burns out with KZ).
• The voltage at the battery contacts (should be ~3.8V).

When is the best time to contact the service center

Although it seems like a simple procedure to remove the battery, in some cases it is better to trust the professionals.

• 🛠️ You have a flagship model (Xiaomi 13 Ultra, Mix Fold 2) with a complex cooling system.
• 🔥 The battery is swelling or deformed – it is dangerous!
• 📱 Phone hit by water or hit by blows (risk of hidden damage).
• 🔧 You are not sure about your skills or you don’t have special tools (such as a thermal air station).
• 💰 The cost of a new battery exceeds 30% of the price of the phone – it may be more profitable to buy a new device.

Average battery replacement cost at Xiaomi service centers (as of 2026):

🔹 Note: In informal services, the price may be lower, but there is a risk of installing a non-original battery with a lower capacity.

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If your Xiaomi is still under warranty and the battery is swelling or quickly discharged, the service center is obliged to replace it for free within the warranty period (usually 1 year).

What to do after removing the battery

Did you get the battery out? Great! Now you have to finish the process right so that the phone works well.

• 🧹 Clean the case of glue residues with isopropyl alcohol. Do not use acetone - it can damage the plastic!
• 🔧 Check the contacts on the motherboard. If they're oxidized, clean them with a stripe or alcohol.
• 🔄 Install a new battery (if you were planning to replace it) and plug the connector in. Make sure it sits tightly.
• 📏 Check the gaps before closing the lid. The battery must not press the body.
• 🔋 Charge your phone 50% before first turning on – it will prolong the life of the new battery.

If you don't install a new battery right away, store the battery you've recovered in a dry place at room temperature, the optimal charge level for storage is 40-60%, and a fully discharged or 100% charged battery degrades faster.

⚠️ Warning: After the battery is replaced, the phone may not turn on or show a "Battery low" error even when the charger is connected. 10-15 The power controller must "see" the new battery.

If the phone does not respond to charging:

1. Try another charger (preferably original).
2. Connect your phone to your PC via USB – sometimes this helps wake up the controller.
3. If nothing works, the charging plume or power controller may be damaged.

FAQ: Answers to Frequent Questions