How to get the battery from the phone Xiaomi Redmi: instructions with photos and warnings

Why Removing the Battery from Xiaomi Redmi Is Not a Trivial Task

Modern Xiaomi Redmi smartphones are designed with compactness and reliability in mind, and their batteries are integrated into the case on adhesive basis. 1S Redmi 2, which today requires even a battery replacement to disassemble the device, and it's fraught with risks. The manufacturer doesn't expect the user to interfere with the internal design, so you won't find official instructions in the documentation or in the service centers.

The main difficulties are related to:

• 🔧 Glue fastening - the battery is glued to the body with thermal glue, which hardens over time.
• 🔋 Flexible plumes – improper disconnection can damage contacts or motherboard.
• ⚡ Residual charge – even a phone turned off can keep the voltage in the capacitors, which is dangerous with a short circuit.
• 🛠️ Fragile components – Display cable, speakers and microphones are located next to the battery.

If you've never taken a smartphone apart, you should go to a service center, but if you've decided to do it yourself, this article will help you avoid the typical mistakes. We'll look at the tools, the step-by-step process, and the critical points that 90 percent of homemade craftsmen ignore.

What tools you will need: full checklist

Without the right tools, it is almost impossible to remove the battery from the Xiaomi Redmi.

Plastic mediators (2-3 piece.)|Needles or toothpicks for glue-sweetening|Thermo-air station (dryer) with temperature 60-80°C|Screwdriver. T3/T4 (model-wise)|Screen suction cup|Tweezers with curved ends|Protective gloves (optional)-->

Why these tools?

• 🔥 The hair dryer softens the glue - without it, the battery could come off with a piece of the body or damage the plumes.Temperatures above 80°C is dangerous for plastic parts!
• 📱 Mediators prevent scratches on the body and screen. Metal blades often slip and damage the insides.
• 🔌 Screwdriver. T3/T4 It is suitable for most of the propellers in the Redmi Note. 10/11/12, but in Redmi 9 may be screws Y00 — specify in advance!

⚠️ Warning: Never use knives or scissors! They conduct current and can close the contacts of the battery, which will lead to fire or explosion of the lithium-ion battery. Even a blunt knife leaves micro-scratch on the aluminum body, which can cause corrosion.

If you do not have a thermophene, you can do with hot water in a bag (temperature). ~70°C), but it is less effective and increases the risk of moisture.The alternative is isopropyl alcohol (90%+), which dissolves glue, but requires care: alcohol can damage the rubber seals of the chamber.

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Before you start, take a picture of the location of all the screws and plumes on the phone, which will help to collect it back without “extra” details (yes, this happens!).

Step-by-step: how to remove the cover and get to the battery

The disassembly process varies depending on the Xiaomi Redmi model, but the overall scheme is the same. 10 Pro (similar to Note) 9/11/12, Redmi 10/10A etc.).

Step 1: Turn off and prepare the phone

Before the disassembly:

1. Turn off the phone and remove it. SIM-map.
2. If the battery is swelling, don't turn the device on or charge it!
3. Place the phone on a soft surface (such as a napkin) to avoid scratching the screen.

Step 2: Removal of the back cover

Most Redmi models have the lid on the latches and glue.

1. Heat the phone edge with a hairdryer (especially near power and volume buttons) during 2-3 minute.
2. With a suction cup, grab the screen next to the power button and pull it up. If the lid doesn't respond, warm it up again.
3. Insert a plastic mediator into the resulting gap and carefully lead along the case, snapping clips.

Step 3: Battery disconnection

When you take the lid off, you'll see the battery covered with black film. Don't pull it!

1. Unscrew the screws that fix the metal plate over the battery plume (usually 2-3 screw T3).
2. Carefully tweez the plume and unplug it from the motherboard. Use a plastic mediator to keep the contacts intact.
3. If the battery is swelling, don't puncture it! Lithium-ion batteries emit toxic gases when punctured.

Now you can start extracting. You usually have pulling tongues under the battery (white or black stripes), and if you don't, use isopropyl alcohol or a thin plastic card to separate the glue.

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Never pull the battery behind the tongues with jerks! This can tear them away from the battery case, and you'll have to scrape the glue manually, risking damage to the board.

How to separate the battery from the case: methods and risks

The most critical step is to separate the battery from the housing, where 80 percent of newcomers make mistakes that cause the board to break or the battery to break.

Recommended method - thermophene + mediators:

1. Heat the battery with a hairdryer (temperature) 70-80°C) during 3-5 Keep the hair dryer at a distance. 5-7 See to avoid overheating the fee.
2. Insert a plastic mediator under the battery from the edge where there are no components (usually next to the camera).
3. Carefully drive the mediator along the battery, separating the glue, and if you feel resistance, warm up the area again.
4. Don't try to tear the battery off completely at once! 1-2 mm.

⚠️ Warning: If the battery starts to hiss or smoke, stop working immediately, take the phone outside and do not approach it. 15-20 These are signs of thermal acceleration of the lithium-ion battery, which could lead to a fire.

If the glue is too strong, you can use isopropyl alcohol:

• Apply a few drops of alcohol under the battery with a syringe.
• Wait 1-2 minutes until the glue softens.
• Repeat the procedure with the mediator.

What to do after battery removal: cleaning and preparation for replacement

After successful battery recovery, it is necessary to:

1. Clean the case of glue residues. Use isopropyl alcohol and cotton swabs. Don't use acetone, it corrodes plastic!
2. Check the charge for damage. Pay attention to the battery contacts -- they should not be bent or oxidized.
3. Remove old glue from a new battery (if it is glue-based).Many Chinese batteries come with excess glue, which can interfere with installation.

If you are planning to install a new battery, consider:

• 🔋 The purchased battery should have the same capacity and voltage as the original (for example, for the Redmi Note 10 Pro it is 5020 mAh, 3.85V).
• 🔧 New battery can go without glue - in this case, use double-sided tape 3M (thickness 0.2-0.3 mm).
• ⚡ Before installation, discharge the new battery to 30-40% — It will extend her life.

If you have removed the battery to diagnose bloating, examine it for:

• 🔍 Deformation – normal battery flat, without bulges.
• 💨 Smell – a burning or sour smell indicates a malfunction.
• 🔥 Traces of oxidation on contacts (green or white plaque).

⚠️ Attention: If the battery is swelling, do not dispose of it with household garbage! Lithium-ion batteries require special recycling. Most cities have reception points (for example, in the Svyaznoy or M. Video stores).

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when removing the battery, and here are the most common ones and how to prevent them:

Another common problem is that the display plume is damaged, and it goes along the battery, and many newcomers accidentally hit it with the mediator.

• 📺 Before working, watch a demo video of your model on YouTube (for example, search for the request "Redmi Note 11 disassembly").
• 🔍 Use a magnifying glass or magnifying glass to see small details.
• 🖌️ If the plume does come off, don't panic. You can solder it back, but it's a professional job.

If the phone does not turn on after assembly:

1. Check if the battery plume is connected to the motherboard.
2. Make sure all screws are twisted (unpatched screws can cause short circuits).
3. Connect your phone to the charger on 10-15 Minutes – sometimes it takes time to wake up the power controller.

When to contact the service: 5 signs

Despite the detailed instructions, there are situations where self-removal of the battery is unnecessarily risky.

• 🔥 Battery swelling or leaking - it is dangerous to health.
• 🔧 You haven’t been smart before and aren’t sure about your skills.
• 📱 Phone hits water - corrosion on board can make disassembly more difficult.
• 💸 You're a model with IP-Certification (e.g. Redmi Note 11 Pro)+ 5G), where the sealing of the body is critical.
• ⚡ After the battery is removed, the phone doesn’t turn on or overheats – this could indicate damage to the board.

The cost of replacing the battery in the service varies:

• 💰 Official Xiaomi service: 2,500-4,500 ₽ (battery-powered).
• 💰 Informal workshops: 1,500–3,000 ₽ (analogous).
• 💰 Self-sustained replacement: 800–1,500 ₽ (battery cost for AliExpress).

If you do decide to do it yourself but are afraid of damaging your phone, consider buying a used donor (like a Redmi with a battered matrix but a working battery) on an Avito or Yule, which will allow you to practice on a non-living device before working with your smartphone.

FAQ: Frequent questions about battery extraction from Xiaomi Redmi