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

Removing the battery from a Xiaomi phone is a task that may be necessary when replacing the battery, repairing the motherboard or eliminating the effects of moisture. However, the design of modern smartphones complicates this process: most models are equipped with non-removable batteries glued to the body, improper actions can lead to damage to the plumes, battery rupture or even fire.

In this article, we will understand how to safely remove the battery on different Xiaomi devices – from budget Redmi to flagship Mi and Xiaomi. POCO. You will learn what tools will be required, how to avoid common mistakes and what to do if the battery is swollen. 11T Redmi Note 10 Pro, where the risk of damage is maximum.

Why You Might Need to Remove the Battery

The battery is one of the most vulnerable components of the smartphone, and its removal is required in several cases:

• 🔋 Replacement with a new battery – if the capacity falls below 70% of the nominal, the phone quickly discharges or suddenly turns off.
• 💧 Moisture intrusion – when in contact with water, the battery can oxidize, leading to short circuit.
• 🔥 Battery bloating is a dangerous condition in which the phone body is deformed, and the screen “steps away” from the frame.
• 🛠️ Motherboard repair – the battery is often temporarily disconnected to access chips.
• 📱 Modding or upgrades are rare, but some enthusiasts install larger-capacity batteries.

It's important to understand that a bloated battery can't be pierced or bent, it can cause fire or explosion. If the phone's case is deformed, it's best to take it to a service center right away, and self-extraction is only permissible if all safety measures are followed.

⚠️ Warning: If the battery is swollen, do not try to charge the phone or turn it on.Even minimal mechanical exposure can lead to depressurization and release of toxic gases.

What Xiaomi models have a removable battery

Most modern Xiaomi smartphones (released after 2016) are equipped with non-removable batteries, but there are exceptions.

• 📱 Xiaomi Redmi 3S/3X — one of the latest models with a removable back cover.
• 📱 Xiaomi Redmi 4A — Budget smartphone with the ability to quickly replace the battery.
• 📱 Xiaomi Redmi Note 3 (version with Metal Body) – unlike the Pro version, has a removable cover.
• 📱 Xiaomi Mi Max and Mi Max 2 – flagship “giants” with a replaceable battery.

If your phone is not on this list, it is likely that the battery is glued to the case, in which case it will require special tools and skills to retrieve. Check the model of your device in the settings along the Settings path → About Phone → Model.

Necessary tools for removing the battery

If you decide to remove the battery yourself, prepare the following set of tools:

• 🔧 Set of screwdrivers (cross-cross-haul) PH00, PH0, Five-pointed, flat for some models).
• 🔥 Hair dryer or thermo-air station - for softening the glue (optimum temperature 60-80)°C).
• 📏 Plastic blades/mediators – to separate the battery from the housing without damaging the plumes.
• 🧲 Suction - helps to squeez the back cover on models with glue fastening.
• 🛡️ Gloves and safety glasses – mandatory when working with bloated batteries.
• 🔌 Insulation or capron tape - for fixing disconnected plumes.

For models with a screw mount battery (for example, POCO F1) may need additional bits. Do not use metal tools to tamper with the battery - this is fraught with short circuit! It is better to buy a specialized kit for repairing smartphones (costs from 500 rubles).

Turn off the phone and remove it. SIM-map|Charge the battery to 30-50% (for safety)|Prepare a workplace with good lighting|Wear gloves if the battery is swollen|Take a picture of the location of the screws before disassembling-->

⚠️ Warning: Never use a knife or screwdriver to directly smack the battery, it can puncture the battery shell. The glue under the battery often conducts current, so any metal exposure is dangerous.

Step-by-step: how to remove a non-removable battery

Consider the universal algorithm for most Xiaomi models (the Redmi Note 10 Pro example). Before starting work, make sure that the phone is turned off for at least 30 minutes - this will reduce the risk of residual voltage in the circuits.

Step 1: Removing the back cover

1. Heat the edge of the back cover (around the perimeter) with a hair dryer for 2-3 minutes. Keep the hair dryer at a distance of 5-7 cm so as not to overheat the display.

2. Put a plastic lid on the lid starting at the bottom edge (there is usually a notch). If the lid doesn't lend itself, warm up again.

3. Carefully walk around the perimeter with a spatula, separating the latches. Don't put too much effort into it - clips of the mounts often break on Xiaomi.

Step 2: Disconnect the battery plume

1. Find the battery plume – it is usually located at the top of the motherboard and marked in red or orange.

2. Carefully put the connector in a plastic blade. Don't pull the wires! If the plume doesn't detach, check if there's a latch.

3. Glue the connector with a tape so that you do not accidentally close contacts during further work.

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If the battery plume is damaged, don't try to repair it, replace it with a new one. A short circuit in the power supply chain can disable the motherboard.

Step 3: Remove the battery

1. Put a plastic blade on the battery from any angle. If it doesn't lend itself, warm up the body with a hairdryer again (temperature no higher than 80°C!).

2. Put a thin plastic card or mediator under the battery to gradually separate it from the adhesive base. Move slowly, without jerking.

3. If the battery is glued too much, use isopropyl alcohol (90%+) - a few drops around the edges will help dissolve the glue. Don't pour alcohol on the motherboard!

4. After removal, inspect the battery for swelling or damage. If the container on the case is erased, find the marking on the plume, it will help to find a replacement.

Features of battery removal on popular models

Battery design can be very different even for devices of the same line. Consider the nuances for the most common Xiaomi smartphones.

Xiaomi Redmi Note 8/9/10 Pro

In these models, the battery is glued to an aluminum frame, which makes it difficult to extract.

• 🔩 Additional screws under the back cover (don’t forget to unscrew them!).
• 🔥 Strong glue fastening - you will need a hair dryer for at least 5 minutes.
• 📱 Risk of damage to the fingerprint scanner plume (located next to the battery).

Tip: before warming up, stick a heat-resistant tape on the display - this will protect it from overheating.

POCO F3/POCO X3 Pro

In these phones, the battery is not only glued, but also two screws at the bottom, which are easy to miss unless you know the exact location.

• 🔌 The battery plume is hidden under a metal plate - it must be removed with a screwdriver.
• 🛡️ Battery is covered with protective film – do not remove it without need.

Xiaomi Mi 11/12 Series

The flagship models have a two-layer adhesive mount, and the battery is integrated into the cooling system.

• 🔥 You will need an infrared station for uniform heating (dryer may not cope with the).
• 🛠️ Risk of damage to the graphite heat pad - it will have to be replaced.
• 📱 The battery plume is located under the screen - with sloppy movement, you can tear off the display module.

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On Xiaomi’s flagship models (Mi 11 Ultra, Mi 12 Pro), self-replacement of the battery is not recommended without experience.

What to do after removing the battery

If you've successfully removed the battery, don't rush to install a new one.

1. 🧹 Clean the case of glue residues - use isopropyl alcohol and a lilac-free wipe. Don't rub too hard so as not to damage the antenna lines.
2. 🔍 Check the contacts on the motherboard. If they're oxidized, clean them with a blower or a special liquid.
3. 📏 Compare new and old batteries -- they have to be the same size, capacity and location of the connector. Even minor differences can lead to problems.
4. 🔧 Apply new glue – use bilateral scotch 3M 9448A Or a special glue for the batteries. Don't overdo it, the surplus can go on the board.

If you are replacing the battery due to bloating, be sure to check the charging-discharge controller (chip) BQ25890 A damaged controller could cause the new battery to re-exaggerate, requiring a soldering iron and experience with the new battery. SMD-component.

⚠️ Warning: After you change the battery, reset the calibration data in the Engineering Mode menu. To do this, type ##4636## in the phone application, select Battery information and press Reset calibration.

Frequent Mistakes and How to Avoid Them

Even experienced wizards sometimes make mistakes when working with Xiaomi batteries, and here are the most common ones and ways to prevent them:

Another common problem is the wrong calibration after the battery is replaced: If the phone shows the wrong percentage of charge (for example, jumps from 50% to 1%), perform the full discharge-charging cycle:

1. Discharge the phone before automatically shutting down.
2. Charge up to 100% without interruptions (use the original adapter).
3. Repeat the cycle 2-3 times.

FAQ: Answers to Frequent Questions