How to safely get a battery on Xiaomi Redmi: instructions for all models

Removing the battery from the Xiaomi Redmi smartphone is a challenge faced when replacing the battery, repairing after a fall or getting moisture. Modern models of the Redmi Note, Redmi and POCO series are equipped with non-removable batteries, which complicates the process. In this article, we will analyze the step-by-step actions for different generations of devices, talk about the necessary tools and warn about typical errors that can bring the phone down.

It's important to understand that if you've never disassembled a smartphone, you should go to a service center. Incorrectly removing the battery can damage the plumes, short circuit or even fire the lithium-ion battery. However, with proper care and preparation, you can do the procedure yourself - especially if you're talking about Redmi 4X, Redmi Note 5 or newer models, where the design has been working for years.

We have gathered up-to-date information for 2026, considering changes in the design of the enclosures and battery mounting, and at the end of this article we have an FAQ with answers to frequent questions and tips on choosing a replacement.

Preparation: What will be needed to remove the battery

Before you start disassembling, make sure you have everything you need, and the absence of even one tool can cause permanent damage to the body or internal components.

• 🔧 Plastic mediators or shoulder blades (to separate the body without scratches).
• 🔨 Cross screwdriver (usually) PH00 or PH0 microprop).
• 🔥 Dryer or thermal air station (for softening the glue on non-removable batteries).
• 🧲 Magnetic mat or container (to avoid losing screws).
• 🩹 Gloves and safety glasses (the battery may leak or ignite).
• 📦 New battery (if you are planning a replacement, check the compatibility model!).

For Redmi models with removable back cover (for example, Redmi 3S or Redmi 4A), the toolkit is minimal - enough mediator and screwdriver. But for Redmi Note 10 Pro or POCO X3 Pro with adhesive battery mounting, you will need thermal air treatment.

⚠️ Warning: Never use metal tools to tamper with the battery! The risk of puncture or closure of contacts is extremely high. Plastic blades or special devices for batteries are the only safe option.

If you are not sure about your Xiaomi Redmi model, check it in the settings along the Settings path → About Phone → Model. This will help you find the right instructions and avoid errors.

Step 1: Power out and disassembly of the body

The first and most important step is to completely disconnect the phone from any power source, and even if the battery is discharged, the residual charge can cause the device to short-circuit when it comes into contact with the tools.

For models with a removable lid (for example, Redmi 5A):

1. Turn off the phone with a long press of the power button.
2. Remove the back cover by poking it up with a mediator from the corners (usually there are small gaps).
3. Disconnect the battery by pulling the tongue or gently scapulating.

For non-removable models (e.g. Redmi Note 9 Pro):

• 🔌 Turn off the phone and remove it. SIM-map.
• 🔥 Heat the back cover with a hair dryer (temperature) ~60°C) during 2-3 minutes to soften the glue.
• 🪛 Carefully tuck the lid with a plastic spatula, starting at the bottom edge (there is usually weaker adhesive connection).
• ⚡ After removing the lid, do not touch the battery contacts - they may be energized!

⚠️ Warning: Heating the case, don't point the hair dryer at the screen or camera! overheating can damage OLED-Keep the air flow at a distance. 5-10 centimeter.

If the lid doesn't lend itself, don't put too much effort into it -- you may have missed hidden latches. Check out your model's YouTube demos (e.g., JerryRigEverything or Fixez's channels often post detailed guides).

Step 2: Disconnecting the plumes and batteries

Once you remove the back cover, you'll see the insides of the smartphone, and the main challenge at this point is to disconnect the battery from the motherboard to avoid short circuits.

Algorithm of action:

1. Find the battery connector (usually located at the top of the board, marked in black or red).
2. Carefully apply the connector with a plastic spatula or a nail, pulling up. Don't pull the wires!
3. If the battery is glued, heat it with a hair dryer (temperature ~50 ° C) and tuck it from the edges with a special spatula for the battery.

On some models (e.g. Redmi K40), the battery can be fixed with additional screws or a metal plate.

Critical detail: on fast-charging models (like the Redmi Note 11 Pro+ 5G), the battery can have two connectors, the main one and the extra one for temperature control.

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If the battery is swelling, don't try to puncture it! Put the phone in a sealed container and take it to the service. Lithium-ion batteries release toxic gases when damaged.

Step 3: Remove the battery without damage

The most important thing is to physically remove the battery, and the key is patience and accuracy, and if the battery is glued, don't try to pull it out by force, because it can break the contacts or damage the body.

Step-by-step:

1. If the battery is glued, heat it with a hair dryer around the perimeter (do not direct the flow to one area for longer than 10 seconds!).
2. Subdense the edge of the battery with a plastic spatula for batteries (they are thinner than conventional mediators).
3. Put a thin plastic card or a special extractor for battery (sold in repair kits) under the battery.
4. Slowly drive the blade along the battery, separating the glue. If the resistance is too strong, repeat the heating.

For traction tongue models (e.g. Redmi Note 12):

• 🔹 Pull the tongue carefully without making a sharp effort.
• 🔹 If the tongue is torn off, use a plastic spatula as described above.

⚠️ If the battery starts to smoke or make hissing sounds – immediately stop working, take the phone outside and do not approach it. 15-20 These are signs of thermal acceleration that could lead to a fire.

Once the battery is removed, inspect it for bloating, corrosion or damage to the contacts. If the battery is deformed, it cannot be used - only disposal!

Step 4: Installation of a new battery

If you remove the old battery to replace, then when you install the new one, follow the same rules of accuracy, the main thing is the correct connection of the connector and reliable fixation.

Procedure:

1. Clean the installation site from glue residues (you can use alcohol or scraper).
2. Check that the new battery is compatible in capacity and connector (for example, for the Redmi Note 10 will suit battery 5020 mAh with a JST 2.0 connector).
3. Stick the new battery with double-sided tape or special glue (complete with batteries usually comes with adhesive tape).
4. Connect the connector to the motherboard and lock the battery, slightly pressing it.

For models with adhesive attachment (e.g. POCO F3):

• 🔋 Use the glue. B-7000 Or similar – it holds reliably, but allows you to remove the battery during the next repair.
• 🔧 Do not twist the screws of the cover until you make sure that all the plumes are connected correctly.

Once you have a new battery installed, don't turn the phone on immediately. First, assemble the case, twist all the screws, and then plug in the charge. The first turn on can take up to 1-2 minutes - that's okay.

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Never use superglue or instant glue to fix the battery! they can damage the contacts and make the next repair impossible.

Common Mistakes and How to Avoid Them

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

• 🔌 Forgetting to turn off the battery connector before removing. Result: short circuit, burnt circuit. Solution: Always double check to turn off the connector.
• 🔥 The battery is overheated with a hair dryer, resulting in swelling or leakage of the electrolyte. Solution: Keep the temperature at 60.°C and warm in short intervals.
• 🪛 The result is a volatile touchscreen or camera. Solution: Use a magnetic mat and photograph the location of the screws.
• 🩹 Punctures or incisions of the battery, resulting in fire or gas poisoning, solution: plastic tools only, no force!

Another common problem is the incompatibility of the new battery, for example, if you put a Redmi Note 8 battery in the Redmi Note 9, the phone may not charge or shut down at 30% charge. Always check the battery articulation against the original battery (you can find it on the old battery or model specifications).

If the battery is discharged quickly after replacement, check:

• 🔋 Correctness of connection of the connector (sometimes it is inserted not to the end).
• 📱 Battery calibration (discharge phone to 0%, then charge to 100% without interruptions).
• 🔌 State of the charging port (clean it of dust and oxidation).

When is the best time to contact the service

Despite detailed instructions, some situations require professional intervention.

• 🔧 You’ve never broken down electronics and are afraid of damaging your phone.
• 🔥 Battery swelling or leaking (risk of chemical burn!).
• ⚡ After replacement, the phone does not turn on or overheat.
• 📱 Xiaomi Redmi is a new model (for example, Redmi Note 13 Pro)+), And there's no verified disassembly guides.

The cost of replacing the battery in the service varies from 1,500 to 4,000 rubles (depending on the model and region), it is not as expensive as repairing after a failed self-replacement. Official Xiaomi service centers give a guarantee of work - usually 3-6 months.

If you still decide to repair yourself, but something went wrong, don't try to fix the bug, it can make the problem worse. SIM-The map, you probably damaged the antenna plume, and in this case, you can't do without a microscope and a soldering station.

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Check out workshop reviews before visiting the service. Unscrupulous centers may install substandard batteries or overprice "extra work."

FAQ: Frequent questions about Xiaomi Redmi battery replacement