How to get the battery from the smartphone Xiaomi Redmi: disassembly, tools and precautions

Removing the battery from the Xiaomi Redmi smartphone is a challenge that users face when replacing the battery, repairing after a fall or getting moisture. Unlike older models with removable covers, modern Redmi (starting with the Redmi Note 4/4X and later) have a non-removable battery glued to the body, which complicates the process, but does not make it impossible with the right approach.

Many people are afraid of damaging plumes or screens, and for good reason: 78% of self-disassembly breakdowns are due to careless handling of flexible cables or overheating of the battery. In this article, we will learn how to minimize risks, what tools are needed, and when to contact a service center instead of self-manipulation.

It's important to understand that if your Redmi is still warranty, any disassembly will cancel it. The manufacturer does not provide a custom battery replacement - there are authorized Xiaomi service centers for this. However, if the warranty period has expired or you are willing to take risks, our instructions will help to make everything as safe as possible.

1. Preparation: Tools and Conditions for Safe Disassembly

Before you start removing the battery, make sure you have everything you need. Lack of at least one tool can damage your smartphone!

• 🔧 Plastic blades/mediators (2-3 pc.) - for separation of the cover and battery without scratches.
• 🔥 Dryer or thermo-air station - for softening the glue (temperature 60-80)°C).
• ⚡ Isopropyl alcohol (90%+) — Removing glue residues and cleaning contacts.
• 🛠️ Screwdriver cross (PH00) five-pointed (Y00) — Xiaomi screws.
• 🧲 Magnetic mat or tray – so as not to lose small details.
• 🔋 New battery (if you are planning to replace) – check the compatibility of the model!

Also, prepare your workspace: a clean desk with good lighting, no carpets or fabrics that can be electrified. Static electricity is one of the main reasons why smartphone components fail when disassembling, use an antistatic bracelet or periodically touch grounded metal objects.

⚠️ Warning: If the battery is swelling (phone cover is up or the screen is "going off"), do not heat it or puncture it! Bloated batteries are prone to spontaneous combustion. In this case, immediately take the device to service or dispose of the battery at a special reception point.

Before starting work, completely discharge the smartphone (before turning off automatically) - this will reduce the risk of short circuit. If the phone does not turn on, wait at least 24 hours - during which time the capacitors will discharge naturally.

2. disassembly of the case: how to open Xiaomi Redmi without damage

The Redmi case is glued and latches, so you need to open it carefully. Start by turning off the power (if the phone is still on) and removing the tray for the first time. SIM-Then you take the next steps:

1. Heat the edge. Use a dryer at minimum power, evenly warming the edges of the body around the perimeter for 2-3 minutes. Do not direct hot air to the screen or camera!
2. Separate cover. Insert a plastic blade into the gap between the back cover and the body (start at the bottom edge where the charging connector is located). Carefully drive the blade along the edge, snapping the clamps.
3. Check the plumes. Once you remove the lid, you'll see a battery and some flexible plumes (display, cameras, buttons). Don't pull the lid sharply, you risk tearing off the plume!

On Redmi Note 10/11 and later, the plumes are often covered with metal screens mounted with screws, which must be unscrewed with a five-point screwdriver (Y00) to access the connectors.

If the lid doesn't lend itself, don't use too much force -- you probably missed the latch or didn't warm up enough. Reheat and try again. On IP53-protected models (like the Redmi Note 12 Pro+), the adhesive is more resistant -- you may need a specialized solvent (like the B-7000).

Is the smartphone off the power supply?|Are the trays off? SIM-map?|Are the edges of the body warmed up by a hairdryer?|Are plastic blades ready to separate the cover?|Checked if the mountings of the plumes under the lid?

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3. Battery shutdown: why it's critical and how to do it right

Before you touch the battery, be sure to unplug it from the motherboard, which will prevent short circuits that can disable the power controller or other components, and the battery connector is usually located under a metal plate or near the bottom edge of the battery.

Shutdown algorithm:

1. Find a battery connector – a small white or black connector with 2-4 contacts.
2. Carefully tuck it with a plastic spatula on the side (not top!) Pull by the tongue, not by the wires!
3. Check with a multimeter (if any) that there is no voltage on the battery contacts.

⚠️ Note: On some models (Redmi) K50, Redmi Note 12 Turbo: The battery connector can be soldered to the board, in which case you can only physically disconnect the battery from the board -- but that's risky without soldering experience!

If the connector is damaged or oxidized, clean it with isopropyl alcohol and a soft brush. Do not use acetone or other aggressive solvents - they can damage plastic parts.

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If the battery is swollen and prevents you from disconnecting the connector, do not try to compress it! Instead, gently unpold the contacts (if you have experience) or contact the service.

4. Battery Removal: Methods for Different Redmi Models

The Xiaomi Redmi batteries are attached to double-sided tape or glue, which only gets stronger over time. There are three main methods of extraction:

Consider the most universal method - heating + plastic blades:

1. Warm up the battery with a hair dryer (60-70°C) for 3-5 minutes.
2. Put a thin plastic blade under the battery at the edge and gently lift it. If the glue doesn't lend itself, warm it up again.
3. Continue to separate the battery around the perimeter, gradually increasing the gap. Don't pull upwards, just sideways!
4. If the battery is "stuck" to the metal body, drop a few drops of isopropyl alcohol under it and wait 1-2 minutes.

For models with reinforced adhesive (for example, Redmi Note 12 Pro+), you can use a guitar string (0.1-0.2 mm):

1. Swipe the string under the battery like a saw, moving it back and forth.
2. Gradually, the string will cut through the glue, and the battery will separate.

⚠️ Warning: The string must be non-metallic (e.g., nylon line) so as not to close the contacts of the battery!

5. Installation of a new battery: nuances and verification

If you've removed an old battery to replace, installing a new one requires just as much care.

• 🔄 Clear the seat of the glue residue with alcohol, make sure there are no small particles left that can close the contacts.
• 📏 Compare the new battery to the old one, which should match the size, capacity and location of the contacts. On the Redmi Note 11 Pro+ Newer batteries may have an additional temperature sensor.
• 🛡️ Use a new glue – bilateral scotch or liquid glue (for example, B-7000). Don't skimp on it!
• 🔌 Connect the battery connector only after full battery fixation.

After installation, collect the phone in reverse order:

1. Put the metal screens on (if you have).
2. Connect all the plumes (display, camera, buttons).
3. Close the lid, starting at the top edge, and snap it around the perimeter.
4. Turn on the phone and check the charge: if the battery is not detected, turn off the power and check the contacts of the connector.

If the new battery is quickly discharged or the phone is not turned on, the following problems may occur:

• 🔋 The battery connector is not tightly connected.
• 🔌 The power controller on the motherboard is damaged (often occurs with a short circuit).
• 📉 Battery defective or incompatible (check labeling!).

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After replacing the battery, perform 2-3 full charge/discharge cycles – this will help calibrate the controller and extend the life of the new battery.

6.When it is better not to take risks: signs that you need to contact the service

Despite detailed instructions, there are situations where self-replacing a battery is unnecessarily risky.

• 💥 The battery swelled or deformed the body.
• 🔥 On the board, traces of oxidation or burning are visible.
• 🛠️ You haven’t been smart before and aren’t sure about your skills.
• 📱 The Redmi model has a complex design (for example, the Redmi). K60 liquid-cooled).
• 🔄 After the battery is removed, the phone does not turn on, although the connector is connected correctly.

The cost of replacing the battery in the service varies from 1,500 to 4000 rubles depending on the model and region. For comparison: the original battery for the Redmi Note 10 Pro costs about 2 000 rubles, and for the Redmi K50 - up to 3,500 rubles. Savings on self-replacement are justified only if you are sure of the result.

In authorized service centers, Xiaomi replaces with a warranty (usually 3-6 months), uses original parts and checks the phone on diagnostic equipment, and if there are problems with charging or autonomy after the replacement, they will be fixed for free.

7. Alternatives to Replace: How to Extend the Life of a Redmi Battery

If your goal is not to repair but to improve your battery autonomy, try optimizing battery life without removing it first:

• 🔄 Battery calibration: fully discharge the phone, then charge to 100% without interruptions. Repeat 2-3 times.
• ⚡ Turn off fast charging: in the Battery settings → Charging modes, select "Standard" instead of "Fast." That will reduce heat.
• 📵 Limit background activity: in Settings → Annexes → Permissions disable auto-run of unnecessary programs.
• 🌡️ Avoid overheating: Do not use your phone in the sun or while charging for games.

If the battery capacity has dropped to 70% or below (checked in Settings → Battery → Status), software methods will not help — it will require replacement. However, on Redmi models from 2020 to 2022, the battery often lasts 2-3 years when used correctly.

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In the Engineering Mode menu (#4636##) you can check the actual state of the battery, including the number of charging cycles and temperature.

FAQ: Frequent questions about battery replacement in Xiaomi Redmi