How to remove the battery from Xiaomi Redmi 5: disassembly without damage

Xiaomi Redmi 5, released in 2017, has become one of the most popular budget smartphones of its time. However, after 5-7 years of operation, many owners face the problem of a bloated or rapidly discharged battery. Replacing the battery in this device is complicated by a non-removable rear cover and glue mounting components. This article will help you understand how to safely dismantle the battery without damaging the board or display, even if you have no experience in electronics repair.

It's important to understand that Redmi 5 (codename rosy) has two versions: the standard and Redmi 5 Plus with a larger screen. The process of disassembling them is identical, but the location of some elements may be slightly different. We'll focus on the base model, but we'll point out the key differences where it's critical. Before you start, evaluate your strength: if your hands are shaking at the thought of microscopic plumes, you better contact the service center.

Preparation for disassembly: tools and conditions

To successfully retrieve the battery, you'll need a specialized toolkit, and don't try to do it at hand, because it can damage the flexible plumes or scratch the body, and here's the minimum kit you need:

• 🔧 Plastic mediators (2-3 (a) - to separate the glued parts of the body
• 🔧 The screwdriver. PH00 — rear-cover
• 🔧 Suction (diameter) 3-4 cm - helps to raise the screen after heating
• 🔧 Hair dryer or thermo-air station - for softening the glue (temperature) 60-80°C)
• 🔧 Tweezers with curved ends – for working with small details
• 🔧 Isopropyl alcohol 90%+ — glue-residue
• 🔧 Nitrile gloves – protection against static electricity

The workspace should be well lit and dust-free. A white table is perfect, so you can see the cogs that have fallen out, cover the workspace with a soft cloth (like a microfiber) to avoid scratching the glass, and if you're working with a bloated battery, don't puncture it or put it under mechanical stress, and it can cause a fire or an explosion.

⚠️ Warning: If the battery is so swollen that it raises the screen or back cover, do not attempt to disassemble the phone yourself. In such cases, the risk of short circuit is greater than 70.

Before starting work, it is mandatory to:

Turn off the phone and remove it. SIM-memory-card

Discharge the battery to 20-30% (this will reduce the risk of fire if damaged)

Back up the data (disassembly may result in resetting settings)

Prepare the screw container (use a magnetic substrate or sticky tape)

Wear an antistatic bracelet or touch a grounded object periodically-->

Step 1: Removing the back cover

The Redmi 5 back panel is mounted on latches and glue. To remove it, you first need to heat the body around the perimeter. Use a hair dryer at minimum power, keeping it at a distance of 5-7 cm from the phone. The temperature should not be above 80 ° C. Overheating can damage plastic latches or display.

Algorithm of action:

1. Heat the bottom of the phone (where the charging connector is) for 1-2 minutes.
2. Insert a plastic mediator into the gap between the lid and the case at the USB-Type C connector.
3. Carefully drive the mediator along the side of the face, alternately cracking the clamps, you will hear the characteristic clicks.
4. Repeat the procedure for the opposite side, then for the upper and lower parts.

If the lid doesn't lend itself, don't put too much effort -- it's likely that the glue hasn't softened enough. 1-2 On the Redmi. 5 Plus may take longer due to increased gluing area.

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If the mediator gets stuck, moisten its tip with isopropyl alcohol - this will help dissolve the glue and facilitate the separation of parts.

After removing the cover, you will see:

• 🔋 Battery with connected plume
• 📱 Motherboard with protective screen
• 📷 Main camera module
• 🔊 Dynamics and vibrator

⚠️ Warning: Don't touch the motherboard with your bare hands - static electricity can disable the chips. If you're not using an antistatic bracelet, touch a grounded metal object (e.g., a heating battery) before touching the board).

Step 2: Disconnect the battery from the board

Before you continue disassembling, be sure to disconnect the battery from the motherboard, which will prevent short circuits from accidentally touching the contacts, and the battery plume is located at the top of the board and is fixed by a small connector.

Instructions for unsetting:

1. Carefully tuck the black connector lock with tweezers or a plastic spatula.
2. Raise the lock by 1-2 mm - it should be fixed in the upper position.
3. Carefully pull the battery plume out of the connector by pulling the plastic part (not the wires!).

If the lock breaks (which often happens when you don't handle it carefully), don't panic. The key is to keep the contacts on the board intact, so you can temporarily insulate the connector with a kapton tape to avoid accidental circuit.

After the battery is turned off, check the voltage on the connector contacts with a multimeter. It should be 0 V. If the device shows residual voltage, then there is a connection somewhere (perhaps through the device). USB-port).

Step 3: Removing the battery

The battery in Redmi 5 is glued to the body with double-sided tape, which requires patience and care to remove, and don't try to pull the battery out by force, which can tear the plume or damage the case.

Step-by-step process:

1. Put a few drops of isopropyl alcohol under the battery on the connector side, and the alcohol will dissolve the glue without damaging the electronic components.
2. Wait 2-3 minutes, then gently tuck the battery with a plastic spatula.
3. Gradually push the blade under the battery, adding alcohol as needed. Do not go more than 2-3 mm deep, so as not to damage the flexible plumes under the battery.
4. If the battery begins to "go" tightly, do not make efforts - it is better to repeat the treatment with alcohol.

On the Redmi 5, two critical plumes run under the battery:

• 📶 Antenna plume (left)
• 🔊 Vibrator train (right)

⚠️ Warning: If you feel resistance to retracting the battery near the top of the phone, stop immediately, most likely you have touched the plume of the display or sensor. In this case, it is better to contact the service, since repairing plume breaks requires a microscope and special skills.

Once the battery is removed, clean the body of the glue residue with alcohol. The new battery should fit into the groove without gaps. If you notice a deformation of the body (for example, from a bloated battery), try to align it with neat pressure. However, do not overdo it - the Redmi 5 aluminum frame easily bends.

Yeah, on your own.

Yeah, at the service center.

No, it's my first experience.

I plan to do it soon.-->

Step 4: Installation of a new battery

When choosing a replacement, give preference to the original Xiaomi batteries or certified counterparts from ATL (Amperex Technology Limited) or SDI (Samsung SDI). Batteries of unknown brands may have understated capacity or inappropriate charge parameters.

The characteristics of the original battery for Redmi 5:

Installation process:

1. Remove the protective film from the new battery.
2. Stick double-sided tape (usually included) onto the phone body. Do not use superglue or other aggressive adhesives!
3. Carefully put the battery in the groove, making sure that the plume is not twisted.
4. Connect the plume to the connector on the board and fix the lock.

After installation, check:

• 🔋 The battery sits tight, without backlashes.
• 🔌 The plume is not stretched or bent.
• 📱 The back cover closes without gaps.

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Use only thermistor batteries (third contact on the plume) and batteries without the thermistor do not support temperature control, which can lead to overheating and fire.

Phone assembly and check

The assembly is done in reverse order, but there are a few critical points:

1. Make sure all plumes (display, sensor, camera) are connected and locked.
2. Make sure that there are no foreign objects under the volume and power buttons.
3. Close the back cover, starting at the top, and snap all the clamps around the perimeter.
4. Twirl the screws with a cross screwdriver, without putting excessive effort (they can tear the thread).

After assembly:

1. Connect the charger and check if charging is underway.
2. Turn on your phone and wait for the system to load.
3. Check the operation of all sensors (sensor, camera, speaker, microphone).
4. Make sure the phone doesn’t overheat in the battery area.

If the battery drains too quickly after replacement or the phone doesn’t turn on, possible reasons:

• 🔌 The loose fit of the battery plume to the connector
• 📱 Damage to contacts on the motherboard
• 🔋 Failed battery (check the voltage multimeter)

Frequent Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make battery replacement mistakes in Redmi 5, and here are the most common problems and ways to prevent them:

Pay special attention to the tightness of the case after assembly. Redmi 5 has no official protection from moisture, but tightly closed latches prevent dust from entering. If after replacing the battery, the phone has become worse catching the network, check the adhesion of the antenna plumes.

FAQ: Answers to popular questions